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[...]Bad Orb, Hessen, Germany The further developed HUBER Screw Press Q-PRESS® was presented for the first time at IFAT 2016. The first units were installed soon and have meanwhile been in operation for more than a year. Now, it is time to review the operational experience gained on site against development targets. In April 2016, a new sludge dewatering system for STP Bad Orb was put out to tender to replace a chamber filter press. Extensive on-site testing was done before in 2015. During the tests, the screw presses turned out to be the most suitable dewatering solution. HUBER offered the newly developed HUBER Screw Press® 620.2 and could win the tender which included a screw press, the electrical control sytem, conveying technology, coagulant agent plant for simultaneous conditioning of liquid and powdery polymer, and a solution for bridging the time of installation. The screw press was installed and successfully put into operation in October 2016. The operating staff on site had already time to get familiar with the operation of the machine during the installation phase when a mobile Q-PRESS® 440 unit was operated on site as a transitional solution. Performance data of the HUBER Screw Press Q-PRESS® 620.2 Throughput: 5 – 7 m³/h, 100 – 210 kgDR/h Polymer demand: 15 kg/t; 1:1 mix of powder/liquid Dewatering results: 24 – 27 % DR Separation degree: > 97 % Screw rotation speed: 0.3 - 0.4 rpm Power consumption: 0.5 – 0.8 kW The Q-PRESS® on STP Bad Orb has already dewatered approximately 7000 m³ sludge since when it was put into service. We would like to thank the operators for their cooperation and excellent support when we were testing new drive technologies on the screw press. In addition to the installation in Bad Orb, another eight HUBER Screw Press Q-PRESS® 620.2 units have been installed successfully. HUBER Screw Press Q-PRESS® – features of the new model Easier maintenance and reduced space demand Axially dividable filter baskets are optionally available, they facilitate maintenance work significantly. Massive components, such as the screw shaft and some filter elements, can now remain in the machine during inspections. Much less space and time is therefore required for maintenance. Even if non-dividable filter baskets are used, space requirements for maintenance on the installation place are now reduced to the minimum that is necessary for machine operation and inspection. Efficient screen surface cleaning inside and outside for improved screening performance The outer surface of the cylindrical filter baskets was previously cleaned by rotating the filter baskets along a stationary nozzle bar while the dewatering process was interrupted. The new screw press offers continuous dewatering without interruptions through a rotating washing system that rotates around the filter baskets for periodic cleaning. Dewatering degree and machine throughput are no longer influenced by interruptions or starts/stops of the washing systems. In contrast to many competitive machines the rotating washing system allows for independent cleaning of the filter surfaces of the inlet and press zone. In addition, the upper and lower filter halves can be cleaned separately so that only the contaminated filter surface sections are cleaned. Filter surface sections which have been cleaned cannot be contaminated again by wash water that runs down.This system significantly reduces the water demand for filter cleaning and additionally minimizes rewetting of the sludge cake through washing. Reliable cleaning of the inner screen basket surfaces is just as important as cleaning of the outer surfaces. The inner surfaces are typically cleaned by a scraper that is mounted on the screw flights and wipes clear the inner filter surface as the screw shaft rotates. The efficiency of this scraping & wiping operation has direct influence on filter resistance and the water discharge velocity of the screw press. Both have an influence on dewatering degree, throughput, filtrate quality, polymer demand, and thus on the operating costs for dewatering. After extensive development and test series HUBER screw presses are now equipped with an innovative, especially designed patented scraper material which cleans the inner filter surface much better and more reliably than customary brushes and a lip seal system. Larger screening surface for increased hydraulic throughputs What is new is that the open filter surfaces in the filter baskets have been increased by up to 100%. The individual screen sizes are therefore able to process significantly higher hydraulic loads without placing higher loads on the filter surfaces and thus the filtrate, and without increasing polymer demand. More efficient drives for improved performance with reduced energy costs New drives exceed current energy efficiency standards. They save not only electricity costs, they also offer plant operators the possibility to operate their sludge dewatering unit much more flexibly due to significantly wider motor speed ranges. Inclined installation for improved dewatering efficiency For good reasons, the basic appearance of the press, the inclined installation, remains as it has always been. The inclined design ensures that screenings removal units can in most cases be connected without the need to place it on an additional elevation. Furthermore, the inclination of the filtrate chambers prevents sedimentation and eliminates the need for manual cleaning work. The decisive advantage of the inclined installation is improved dewatering efficiency. The separated filtrate flows off from the screen basket by gravity, against the flow direction of the press sludge. Rewetting of hydrophilic sludges through filtrate is thus reduced and the dewatering degree improved. Moreover, inclined installation facilitates especially the start-up procedure of the screw press.[...]

[...]Isle of Man, Great Britain The first HUBER Belt Dryer BT installation in Great Britain went officially into operation recently. On the Isle of Man, up to 12,775 t sewage sludge per year will efficiently be dried from now on. HUBER received the order to build a belt dryer on the Isle of Man at the beginning of 2015. The customer wanted to reduce the energy expenditure for sludge drying and the resulting high disposal costs. The HUBER BT 16 achieves this most impressively. The sewage treatment plant of the town Douglas does not have any sludge digestion facilities. There is therefore no exhaust air available for operating the dryer, and only a limited amount of gas and fuel oil is available and hence expensive. The contractor decided therefore to use a highly-efficient, electrically heated boiler for heat supply to the dryer. As the site is located very close to the sea (approx. 300 m), all components of the dryer had to be manufactured from V4A material, not only the dryer segments but also the complete outer shell and the insulation of the air and heating lines. For the cooling water supply for vapour condensation even titanium is used in this case because of the extremely high chloride contents of more than 1,000 mg/l. After a construction time of about one year the belt dryer went into operation in June 2016. The HUBER Belt Dryer BT could be put into regular operation after only a very short start-up period. This project shows how flexible and adaptable the HUBER Belt Dryer BT can be. The dryer easily copes with even the most difficult local conditions of a site on an island and offers the customer an efficient, robust solution to reduce operating costs. Facts and figures: Site location: Douglas, Isle of Man Size: HUBER Belt Dryer BT 16 Dryer length: 19 m Water evaporation: 2,013 kg/h Throughput: 12,775 t/a or 2,500 kg/h Operating time: 5,110 h/a Sludge drying: from 18% DR to 90 % DR Heat source: electricity-heated boiler, 140°C[...]

[...]As the original designer and manufacturer of the world recognised and respected HUBER STRAINPRESS® pressurised sludge screen, it has been increasingly interesting to us to see the number of different applications where the STRAINPRESS® has been utilised and requested. From its original launch into the market in 1990, with its cast steel casing, chain-drive motors and old stuffing box seals, the unit then underwent a period of innovation in 1999 and the latest design was launched in 2000. The modifications included items such as the whole casing now being manufactured and supplied in 304L stainless steel as standard and therefore increasing its asset life against that of the old steel casing versions, which could be subject to corrosion after around 10 years. Additional major modifications at the same time were a direct geared motor drive in place of the old chain-driven design and an up-to-date mechanical seal arrangement to replace the old stuffing box sealing. These new improvements in its design meant that the STRAINPRESS® was now suitably upgraded to ensure that the whole life cost of the unit was reduced and thus allowed it to comply with the latest specifications and market requirements. With this latest design and its extensive track record of over 345 units in the UK and over 1000 units worldwide it is therefore renowned as a market leader in its field. One of the main strengths of any supplier is for them to understand and be aware of its products capabilities in terms of sizing / throughput and performance but also the applications and the effects that different products and solids loading can have on that unit. While the municipal wastewater market tends to have a fairly recognised and well proven range of applications and has full confidence in the unit’s capabilities, this was not always the case when industrial applications are presented to us. This is particularly apparent with the commercial Anaerobic Digestion (AD) market which has expanded over the past 5 to 6 years. HUBER recognised this particular area as a potential application for the STRAINPRESS® units some 7 or 8 years ago and undertook a large number of trials on different applications within this area. It was observed from the very first trial that the characteristics of the digestate required re-evaluation of how the machine could best be optimised in order to give the best performance in this area. HUBER undertook a large number of trials on applications with a series of end users and sites and different basket hole perforations where items including the hydraulic throughput, solids throughput, temperature of the sludge and screenings retention were all recorded. From these extensive trials it was apparent that specific items in terms of some changes to the build of the unit together with the control of the unit were required and from this the industrial version of the recognised STRAINPRESS® unit was developed with validated sizing parameters. The main lessons learned from this was that one size or type does not fit all and from this sound base we have grown this now so that numerous units have been supplied into this demanding and difficult application sector over the past 5 years and all of which are working successfully. Our extensive experience has shown that each application must be looked at and engineered on its own merits , should anyone tell you otherwise then they have obviously not done their homework or undertaken the hard work upfront in order to gain the experience necessary. In that regard, HUBER’s extensive trial work and experience has made us a market leader and allows us to give confidence to our clients that the STRAINPRESS® “does what it says on the tin” in this field. We are equipped to address any present or future AD market needs - just contact us for a discussion about your application.[...]

[...]Magilligan, Northern Ireland HUBER Technology successfully completed the NI Water Magilligan WwTW scheme. Project Profile The Magilligan region is located on the north coast of Northern Ireland just north of the town Limvardy. This area is very popular with tourists and incorporates a Blue Flag beach at Benone as well as a significant portion of land designated as a Special Area of Conservation (SAC).It was concluded from an assessment that a single wastewater scheme for the Magilligan region would be the most cost effective solution whilst offering additional qualitative benefits for the area and its inhabitants and visitors. HUBER Technology Supplied 1 x HUBER Disc Thickener S-DISC size 1 & Control Panel Objective HUBER Technology’s success in Northern Ireland Water and with principal contractor Williams Industrial Services originally stems from a very well attended open day arranged by Area Manager Fred Neumann around the successful trial of a containerized RoS3 (now S-Press) at Enniskillen’s Silverhills WwTW back in 2002. Since then a significant number of screw presses and screw thickeners have been installed in the region, with the total number of units overall now being 65 at time of writing. HUBER have now discontinued the two smaller RoS2 (now S-Drum) thickener sizes in favour of the new size 1 and 2 RoS2S (now S-Disc) units. Though the customer’s operations and maintenance staff were naturally cautious of moving away from the S-Drum units that they were now overtly familiar and happy with, visits to reference S-Disc units elsewhere in the UK quickly appeased any such potential concerns and it was decided to try an S-Disc unit on the new Magilligan WwTW. Since commissioning in 2013, the site and area operations staff are incredibly pleased with the new unit and its process robustness at handling varied SAS flow rates, feed thicknesses and operating times due to the seasonal population fluctuations as a result of a number of large caravan parks in the catchment. So much so that more units have subsequently been ordered for installation in the area. Solution Northern Ireland Water required a throughput of 6.3 m³/h x 0.6%DS and a dewatering efficiency requirement of 6% DS and HUBER were pleased to supply the S-Disc, Flocculation reactor, poly mixing valve & injection ring and control panel. The installation was carried out by Williams Industrial Services and HUBER carried out the commissioning of the unit. Product Profile HUBER Disc Thickener S-DISC - Sludge Thickening Sludge thickening - to reduce storage on site and reduce tanker movements from site. Key benefits include; Low energy & polymer consumption Easy set up & low operator attendance Can be installed inside or outside Unique design & compact footprint Simple robust design Offsite build packages available “By working closely with the NIW Project manager, operations and process team along with the design consultant and the contractor, I was able to impress on them the potential of the new HUBER Disc Thickener S-DISC for this application and future sludge thickening projects. Knowing the reliability of other HUBER products, which they are currently using and the support which HUBER Technology provide, they agreed to take our product on for this application and to date operational reports on the S-DISC are very complimentary. The same has resulted in a further two units being ordered for the new Ballycastle WwTW” commented Fred Neumann Area Manager Scotland & Ireland. Aidan Diamond Williams Project Manager commented that “the S-DISC was installed and commissioned to a very high standard and produces a very good sludge output. It is easily maintained and operated.”[...]

[...]Good ideas always find imitators The RakeMax® HF excellently combines the advantages of the well-proven RakeMax® with the positive properties of a screen with a bar rack that is installed with only a small inclination. The multi-rake bar screen RakeMax® for preliminary mechanical wastewater treatment was developed by HUBER in 2003 and presented to the public for the first time at IFAT 2005. Due to its versatility the RakeMax® has since very well proven its efficiency and become firmly established in the global wastewater technology market. More than 1,300 reference installations give proof of this success. On the basis of the successful RakeMax®, another new screen type for headworks has been developed in the course of continuous further development and for the first time presented at IFAT 2010, the L-shaped RakeMax HF® (high flow). Like the RakeMax® screen this L-shaped multi-rake bar screen belongs to the MAX family of HUBER screens. It were our competitors themselves who indirectly confirmed that we are on the right track with this innovation at IFAT 2014 where similar models could be "admired" on many booths. The RakeMax HF® screen consists of a flat and therefore hydraulically advantageous bottom section and a steep conveying section. This combines the benefits of the well proven RakeMax®, reliable solids separation and high screenings discharge capacity, with a low headloss due to a large effective screen rack surface. We have already sold more than fifty RakeMax® HF units. Due to the extremely small inclination of the bar rack, the screen section through which the flow passes is always double the flow profile in front of the rack. Another advantage of the large effective screen rack surface is that the flow velocity is very slow in the screen gaps with the result of a significant increase in separation efficiency. Furthermore, the flat installation angle of the bar rack and lifting of the material virtually at bottom level prevents problems with sediments in front of the screen, i.e. prevents right from the beginning that such material can settle at all. Main characteristics of the RakeMax® HF: High hydraulic throughput with a small bar spacing, even with deep channels Sturdy design, well-proven technology High removal efficiency Prevents disturbing sediments in front of the screen Especially with existing screening plants the minimum requirements on solids retention in the inlet are often not reliably met. One reason for this is certainly that people can select from a great variety of sanitary products today and have changed their consumer behaviour during the past years. To meet these changed requirements the passage opening at the bar rack needs to be reduced, but this frequently leads to growing hydraulic loads. These conditions make it inevitably necessary to provide for a bigger hydraulic passage area, and this normally means that the size of the existing channel has to be widened or even a new building erected for the screen, with the result of high construction costs. For such applications HUBER offers another screen type for headworks, the well-proven L-shaped multi-rake bar screen RakeMax® HF. RakeMax® HF screens can be adjusted to suit specific site requirements, both structural and hydraulic, and reduce investment and operating costs.[...]

[...]Waßmannsdorf-Berlin, Germany About 3.4 million people live in Germany's capital Berlin presently. Together with the local industries they produce a daily amount of about 600,000 m3 of wastewater under dry weather conditions. The generated wastewater is clarified on six sewage treatment plants, one in the city centre and five large works distributed around the city. These sewage treatment plants discharge their wastewater into a receiving water course each. STP Waßmannsdorf lies in the southern part of the city within intermediate proximity to the new Berlin-Brandenburg airport. With a clarification capacity of 230,000 m³ wastewater per day (under dry weather conditions) it is designed for 1,300,000 PE. The entire amount of the city's wastewater is collected in main pumping stations via collecting lines and from there pumped to the sewage treatment works. On STP Waßmannsdorf the wastewater is fed into the screen building via two huge vertical pressure pipelines and distributed to four treatment lines. As the existing old screening system on site had shown its age and screens had to meet ever increasing requirements due to changing screenings composition, the plant operators decided to replace all machines in the screen building with new ones. In addition, the separation efficiency of the existing 8 mm perforated plate screen seemed to have become insufficient. That is why they decided during the planning phase to install a two-stage screening plant consisting of a multi-rake bar screen with 20 mm bar spacing as course screen and a 6 mm perforated fine screen. Due to the given conditions and scarce space in the building it was no easy task for the planning office PWU in Magdeburg to plan this project in detail in cooperation with Berliner Wasserbetriebe and put it out to tender. Highest attention was paid to two requirements: robust screens and flexibility of the manufacturer. Some of the requirements in the tender specification were very high and bidders had to submit a calculation together with their bid to prove they can meet these requirements. It had to be verified whether the supplier is able to manufacture products that can be tailored to suit specific project requirements. Not least due to the fact that we had already supplied four RoSF 4 Grit Washer units (size 16 l/s) in 2011/2012 via ATM Hartmann (Berlin), we finally received the order in autumn 2013 to supply one coarse, one fine screen and one screenings wash press for treatment line 1. In view of the site conditions the order was initially limited to one line. Placement of the order for the other lines was subject to trouble-free operation of the first-line screens during an eight-week test period under predefined load conditions. After mechanical installation of the complete plant at the end of 2013 and completed electrical installation the plant was put into operation in spring 2014. Despite a number of interfaces plant start-up went off without any problems so that the new screening system could be put into test operation after a very short time already. During this test period all mechanical equipment operated without troubles even during several heavy rainfalls with extremely high pollution loads. Throughout the whole period only one problem report was received from the coarse screen, this was caused by a big squared timber due to which the screen was reliably stopped by the integrated mechanical safety shutdown function (torque control) to protect it against damage. At the end of the test period it had to be proven that the screens can cope with the defined load conditions. The screens had to reliably manage water level differentials of up to 2 m with enormous amounts of screenings (90 kg per minute) upstream of the screens. It turned out during the test period already that such conditions were not at all exaggerated requirements on the part of the customer but real scenarios as they occur regularly on STP Waßmannsdorf. Since both screens and the wash press performed to the full satisfaction of the customer, we received in summer 2014 also the order for the equipment for the rest of the four lines. Presently, the screens of line 4 are installed, i.e. when the structural measures are finished. According to the time schedule the overall project is planned to be finished by the end of 2015. After project completion the following HUBER machines will be operating on site: 4 HUBER RakeMax® Multi-Rake Bar Screens, size 5300 / 2552 as coarse screens; Bar spacing: 20 mm with tear drop shaped bars (size 8 mm), throughput: 2700 l/s per screen 4 HUBER Belt Screen EscaMax® units, size 6000 / 2552 as fine screens, aperture: 6 mm, throughput: 2700 l/s per screen 4 HUBER Wash Press WAP units, approx. 2500 mm feed trough length, throughput: 8.5 m³/h per Wash Press 4 COANDA Grit Washer RoSF 4 units, size 2, throughput: 16 l/s per Grit Washer In operation since 2011 – HUBER COANDA Grit Washer units, type RoSF 4, size 16 l/s HUBER Belt Screen EscaMax®: Blinding of the screen during load operation and insertion of the bottom part of a two-part HUBER EscaMax® screen into the screen building[...]

[...]Wackersdorf and Föhren, Germany Sand and water, as the most important components for concrete production, are a basis of modern society. Due to the growing world population and the ongoing construction boom, both resources are becoming increasingly scarce. Smart solutions from HUBER are designed to remedy this by exploiting synergies of ecology and economy, thus promoting sustainable grit processing in the disposal industry. Intelligent and efficient products and solutions for grit processing not only in industrial plants include the HUBER Grit Treatment Process RoSF5, with the HUBER Horizontal Grit Dosing Screw RoSF7, the HUBER Wash Drum RoSF9 and the HUBER Coanda Grit Washer RoSF4. The HUBER Grit Treatment Process RoSF5 The HUBER Grit Treatment Process RoSF5 is the solution for processing grit, mineral waste and wastewater into reusable fractions. Especially the low operating costs and low maintenance requirements of the HUBER machine technology are decisive for the efficient treatment of the input material and thus also for waste management companies to plan economically. In addition, HUBER technology ensures a consistently high quality of the components to be recycled. This in turn provides the disposal company with planning security and can lead to competitive advantages. Used by waste management companies: intelligent HUBER solutions in practice Hammerer Kanalservice GmbH, based in Wackersdorf, Germany, and HP Enders Umweltservice GmbH, based in Föhren, Rhineland-Palatinate, Germany, have recognised the advantages of HUBER products and solutions: both waste management companies have met the steadily growing customer demands for a receiving station for grit from municipal wastewater treatment plants, industrial grit chambers and sewer flushing by taking a HUBER Grit Treatment Process RoSF5 into operation. Hammerer Kanalservice GmbH can accept up to 20 tonnes of raw material per day, process it and sell it profitably on the raw materials market. The processing plant of the waste management company HP Enders Umweltservice is designed for a solid material volume of 1 m³/h. Thanks to HUBER's treatment technology, HP Enders was able to immediately accept the sewer flushing material produced during last year's flood disaster and to make an essential contribution to the restoration of the sewer system. Acceptance of the liquid and solid phase in the receiving bunker of the HUBER Grit Dosing Screw RoSF7 The first step of the process is the discharge of the liquid phase from the tanker vehicles. For this purpose, the operator connects the vehicle via the hose directly to the provided Perrot connection. With the HUBER system, the liquid phase can be reused and recirculated as service water. Cost-intensive fresh water supply is therefore not necessary for the operation of the plant. This is a significant advantage because, compared to municipal wastewater treatment plants, the process water in industrial companies is not available in sufficient quantities and quality and not without additional costs. At the wastewater treatment company HP Enders, the solids are fed directly via the tanker truck into the receiving bunker of the HUBER Grit Dosing Screw RoSF7. Due to the situation on site at Hammerer, the grit as well as the mineral and organic waste is fed from the dewatering site to the HUBER reception bunker by wheel loader. In general, HUBER designs the receiving area according to customer specifications. Alternatively, a crane can be used to feed the waste into the HUBER reception bunker. Use of HUBER Grit Screw RoSF7 and HUBER Wash Drum RoSF9: separation and washing of coarse material The HUBER Grit Dosing Screw RoSF7 integrated in the receiving bunker feeds the material fully automatically into the HUBER Wash Drum RoSF9. In the wash drum, the fraction < 10 mm is washed out by homogenisation. Coarse material > 10 mm is separated by the inclined screening drum, statically dewatered and discharged into the customer’s bin. In addition, a magnet is provided for the separation of metals. Both operators dispose of the coarse materials, and the metals are sold after pre-sorting. Classification, washing and dewatering of the grit in the HUBER Coanda Grit Washing Plant RoSF4 In the next process step, the HUBER Coanda Grit Washing Plant is used. The grit, organic and water mixture (fraction < 10 mm) is fed into the plant via the Coanda tulip with upstream vortex chamber. The flow, which is set into strong rotation by the vortex chamber, is deflected from the vertical into the horizontal direction at the curved surface of the Coanda tulip due to the Coanda effect that occurs and is fed evenly into the container. The solids contained in the flow (grit particles, organic material) are then separated due to the flow diversion combined with flow velocity reduction, dependent upon the particle settling velocity, and sink down to the bottom area of the tank. There, the organic and mineral components are separated. Due to a defined introduction of upwardly directed service water the grit in the lower part of the HUBER Coanda Grit Washing Plant RoSF4 will be fluidised in the upflow, i.e. a locally defined grit fluidised bed is created. Within this fluidised bed the lighter organic particles are separated from the dense grit particles, independent of the particle size. The mineral fraction is then statically dewatered via the discharge screw and can be profitably sold by both companies to the construction industry. Organic and fine grit separation with the HUBER Compact Plant ROTAMAT® Ro5 The effluent from the HUBER Coanda Grit Washing Plant RoSF4 is then treated in the multifunctional HUBER Complete Plant ROTAMAT ® Ro5. Here, the organic and fine grit components are separated from the water stream in a grit channel in only one process step. Both the organic material and the fine grit < 0.2 mm are in turn dewatered and discharged by separate discharge screws. The fine grit is used, for example, in the recultivation or backfilling of pits in opencast mining and can thus be sold at a profit, while the organic components can be used in biogas plants. Sustainable internal water recycling for further reduction of operating costs: effluent from the HUBER Complete Plant ROTAMAT ® Ro5 supplying the Wash Drum RoSF9 The quality of the effluent from the HUBER Complete Plant ROTAMAT ® Ro5 is so good that it can be used directly as wash water supply for the HUBER Wash Drum RoSF9. The remaining wastewater is treated to clear water by the HUBER Dissolved Air Flotation Plant HDF at the end of the process. This clear water is reused as internal process water for the Grit Washer and the Complete Plant. In addition, Hammerer uses the clear water to refuel its suction vehicles. The disinfection plant ensures that the water is free of germs. The internal and external use of clear water reduces operating costs to a minimum, as the cost-intensive supply of fresh water can be dispensed with and, in addition, no wastewater subject to charges is produced. Furthermore, no additional compressed air is required for the saturation system of the HUBER Dissolved Air Flotation Plant HDF, which is another positive influence on the operating costs of the overall plant. Dissolved Air Flotation sludge is dewatered mechanically. The HUBER Grit Treatment Process RoSF5: smart, efficient, sustainable and economical The HP Enders and Hammerer project examples show that the turnkey HUBER Grit Treatment Process RoSF5 is the smart, efficient and sustainable solution for an adaptive system for grit treatment that guarantees a consistently high quality of the recyclable fractions and also saves operating costs. This technologically sophisticated process for grit treatment by HUBER makes an important contribution to the efficient use of resources – and has the nice side effect of being economical.[...]

[...]Belfast, Northern Ireland Huber Technology successfully completed a large £1.2 million project at Duncrue Street, Belfast. The project consisted of supply of equipment and mechanical installation to the inlet works. Huber Technology worked extremely closely with the main contractor Graham Construction and Northern Ireland Water. Project Profile Any project large or small doesn’t happen overnight and in most cases involves a lot of time and effort from a lot of people with different disciplines, experiences and very importantly local site knowledge needs to be involved. Duncrue Street, Belfast was typical of the effort that goes in to making sure that from the very start that a successful and fully functioning project is delivered and all parties and specifications and site requirements are not only met but in most cases exceeded. From the initial enquiry, which was in 2011, regular dialogue has been undertaken between NIW, the design consultant, contractor and Huber Technology. The understanding and appreciation by all of the high elevated and compact inlet works fed by 5 off large screw pumps meant that any issues relating to hydraulics were of the utmost importance. Any failures in this respect would cause extensive damage and untidiness to the surrounding area. In addition to this the existing 6 off coarse and 6 off fine screens on site along with their associated dedicated very long screw conveyors and handling equipment were continually causing issues concerning of not only carryover of screenings but high maintenance and reliability problems. This compounded with the high peaks of loadings in respect of flow and rags meant that the operation of the works involved large amount of manpower and monitoring to take place by NIW. During the long dialogue with all parties Huber Technology had to take into account the very critical site hydraulics and control philosophy requirements for this site along with the right selection of equipment to be used and the associated sizing that goes with this. The coarse screens chosen were used to protect and reduce the solids loading onto the 6mm escalator screens which have one of the highest screenings capture ratios on the market today of 84%. This would ensure that pump blockages and rags were not carried over into the works. Additionally Huber Technology suggested that in place of the very long and maintenance intensive duty standby screw conveyors that a launder system be utilized. This eliminated the need for the very complicated and maintenance intensive screw conveyors and duty / standby change over systems. One of the important aspects of this is that at all stages of the contract, meetings took place to ensure that all parties were aware of the current situation and all parties agreed the way forward. Huber Technology Supplied 6 x HUBER EscaMax® Belt Screen 5000 x 2252 with 6mm perforated plate 6 x HUBER RakeMax® Multi-Rake Bar Screen 4300 x 2250 with 50mm bar spacing 4 x HUBER WAP/SL Screenings Wash Press, size BG12 All Launder Channels DN350 Knifegate valves Equipment EscaMax® Screen throughput 2100 l/s peak flow per screen (5 off duty screens and 1 standby) RakeMax® Screen throughput 2100 l/s peak flow per screen (5 off duty screens and 1 standby) WAP SL max throughput of 15m³/hour per unit (duty + standby for coarse and fine screens each) Launder Channels for a flow rate of 25 l/s Objective A phased installation was crucial on this project to keep the existing works active which had been agreed with Graham Construction and Northern Ireland Water. As you can see from the photos the equipment offered had to also fit within the existing very tight sites hydraulic constraints. Solution The equipment was delivered directly to site where our regional service office based in Portadown, Northern Ireland took over the mechanical installation and commissioning. This proved to be a valuable resource and ensued that the project moved forward and any issues were quickly resolved. The HUBER equipment was successfully commissioned after a 28 day testing period already on 16th October 2013. “Having a strong local presence with a dedicated team and skilled technicians able to deliver this to a consistent high standard of workmanship ensures the project is delivered on time with the highest quality to the client. Huber is a global company with a local presence, the client has a local contact and this means project delivery of any size or complexity can be delivered with minimal fuss. Duncrue Street, Belfast will then be supported throughout its lifetime by the local regional team with prompt response and support to the end user.” commented Kieran Hagan, Regional Field Manager Ireland. Fred Neumann, Regional Sales Manager for Huber Technology also explained “The complexities of this major project were successfully minimized and overcome, due to early engagement with NIW operations/ project manager, consultants, main contractor and their subcontractor. Installation phasing and commissioning problems had minimum impact on the project delivery. This was down to the integrity and commitment of the local Huber Technology installation team.” Product Profile EscaMax® Belt Screen Versatile inlet screen Excellent separation efficiency due to its perforations Reliable cleaning of the perforated plates with a rotating brush Very compact system with minimum space requirements Easy to retro fit into existing channels RakeMax® Multi Rake bar Screen Very high screenings discharge capacity Low headloss Low installation height above ground level even in deep channels Control independent safety system WAP-SL Superior launder Wash Press Volume, weight and disposal cost reduction of up to 85% Compaction up to 50% DR High washed screenings quality of < 20mg BOD 5 /g DR Feeding through a launder channel or directly from a screen or conveyor Quotes “In January 2013 Huber Technology were appointed as a sub-contractor to GRAHAM Construction to supply and install 6 No new course and fine screens at Belfast WwTW under the IWWF Phase 2 Base Maintenance scheme. Works commenced on site in July 2013 and were successfully handed over officially to NI Water in May 2014. The quality of product, workmanship and co-operation provided by Huber for this scheme was of a very high standard.” explained Gerard Mc Keever, Project Manager for GRAHAM Construction. Peter Neeson, Operations Manager from NIW explained in the following 3 bullet points how well the project was carried out: "The reliability of the HUBER equipment has been excellent giving just minor teething problems which have been addressed and sorted effectively by both Huber Technology and the main contractor Graham Construction The screening capture rate, by both the course and fine sets of screens is excellent, evident now by how quickly the skips fill, and the significant reduction in Sewage related debris downstream of the screens. This has meant less pumping and treatment process problems for myself and break downs for NIW M&E. Prior to the new Huber screening system being installed the old one used to pass forward into the works large amounts of sewage debris which often settled out with the sludge’s. This issue drew complaints of pump blockages etc. from the sludge incinerator team (previously NIW) now Veolia water and NIW M&E. Pump blockages are rarely an issue now on site. Screenings handing has been vastly improved by the installation of the Huber WAPs and launder trough system. It replaced a screw conveyor and compaction units which were housed in a purpose built building, this made the maintenance of the old units a dirty and sometimes dangerous job because of space and lighting issues. The WAP’s seem to be well capable of dealing with plug flows of screenings that occur from time to time BWWTW catchment is fairly flat, so in wet weather screenings can arrive at the works on mass after a dry spell, the new WAP’s seem to be very good at dealing with this."[...]

[...]The HUBER Belt Screen EscaMax® is a system that especially offers our customers excellent separation results. Its high separation efficiency has officially been proven in tests carried out under real conditions with a 6 mm perforation screen. The excellent separation result of 84% has been confirmed by an independent institute. These above average results are on the one hand due to the two-dimensional design of our well-proven EscaMax® screen. On the other hand, such results can only be achieved on the basis of consequent further development and high manufacturing quality. Another positive aspect as to functionality and reliability is the sturdy design of the EscaMax®, particularly when huge amounts of grit and gravel need to be processed. Each end of the filter belt of the HUBER EscaMax® screen is connected with a drive chain that is driven by chain wheels. Each chain wheel is driven by a sprocket on a common shaft and a flange mounted gear motor. When they have passed the upper turning point the screening elements are cleaned by an internal spray nozzle bar which operates against screening direction. A separately and continuously driven roller brush enhances the cleaning process additionally. The roller brush operates against the travel direction of the filter belt, this improves cleaning efficiency significantly. Another advantage of this cleaning method is that a majority of the screenings, including abrasive material, are removed from the screening elements already in the first step of the cleaning process by the spray bar. It is obvious that the wear of both the screening elements and the roller brush is considerably reduced in this way. Furthermore, we have risen to another technical challenge and developed a new concept for the critical area where the screening elements are cleaned subsequently. The results have exceeded all expectations: The constant spacing between the roller brush and the semicircular screening elements guarantees gentle yet highly effective cleaning, especially with extremely high screenings loads. The innovation and reliability of the HUBER EscaMax® Belt Screen ensure increased separation efficiency, effectively eliminate pump blockage and wear, and minimise the formation of scum layers in digesters. The HUBER EscaMax® screen thus contributes to increasing the operating reliability of sewage treatment plants. Customers who want to reduce disposal costs even with increased amounts of screenings should additionally use the HUBER WAP/SL screenings treatment system. The special feature of this system is that spray water can also be used as wash water for the WAP/SL. High-turbulence washing of screenings removes the contained organic matter most effectively. An integrated impeller creates high turbulences so that a dry substance content in excess of 45% can be achieved. Residual material becomes valuable material in this way. Furthermore, the carbon-rich WAP/SL wash water improves denitrification, and up to 40% of the wash water are washed out organics which settle as primary sludge and lead to an increase in gas yield. With this innovative and intelligent technology HUBER proves how competence and expertise which have been gathered over many years can successfully be applied in practice. Our concept excels particularly due to its excellent separation efficiency and extraordinary stability and reliability. HUBER has sold hundreds of EscaMax® Belt Screen units and WAP/SL Wash Press units and is a market leader in this field.[...]

[...]Rittersdorf, Germany The clever alternative - example Francois Screw presses have established themselves in the dewatering of municipal and industrial surplus sludge in recent years and have become a cost-effective, low-maintenance and operator-friendly alternative to centrifuges, belt presses or chamber filter presses. HUBER has meanwhile equipped several thousand plants and the machines are not only used for sewage sludge dewatering on municipal wastewater treatment plants, but also for industrial residual sludges (e.g. flotate sludge, sludge containing fibres, etc.) and even mineral sludge such as from mining, or for dewatering sludge from tunnel construction. Many, especially smaller, municipal or industrial plants do not set up own dewatering systems, but rely entirely on cooperation with local disposal contractors. In this case, the sludge produced is temporarily stacked at the wastewater treatment plants and then regularly (once or twice a year) dewatered with the help of container or trailer-based systems and usually collected and recycled by the disposal company. The Francois Company from Rittersdorf in the Eifel is a medium-sized disposal company that provides this service for many municipalities and industries in the region. More and more screw compactors are now being installed in trailers and semi-trailers. The decisive factor here is that the systems are operated fully automatically and are also equipped with remote monitoring or access so that they can be operated as unmanned as possible after start-up. Francois currently has two HUBER Screw Press Q-PRESS ® 440.2 machines installed in two-axle trailers and one HUBER Screw Press Q-PRESS ® 620.2 in a semi-trailer according to the requirements. The plants are designed and manufactured by HUBER according to the needs of Francois. Especially the smaller plants Q-PRESS ® size 440.2 are ideal solutions in terms of logistics and throughput capacity and thus serve the smaller and medium-sized sewage treatment plants in sewage sludge dewatering. In addition to these contract dewatering tasks with mobile plants, Francois also operates partnerships with industrial companies. For example, the sludge disposal of a large milk processor in the region has been organised for many years. For this purpose, Francois has replaced the corresponding dewatering system on the dairy's premises with a HUBER Screw Press Q-PRESS ® 440.2 and operates it there as part of the disposal agreement.[...]