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[...]Pierre, SD, USA[...]

[...]HUBER STEP SCREEN® Reliable Separation and Transport of Screenings for High Separation Efficiencies and any Flow Rate Products and Variants HUBER Fine Screen STEP SCREEN® SSV STEP SCREEN® HUBER Fine Screen STEP SCREEN® SSF STEP SCREEN® The success and broad acceptance of the STEP SCREEN® system is due to its function, the easy-to-understand operation method, the simple cleaning method without any aids (self-cleaning effect according to the counter current principle), easy servicing, its ability to handle very large screenings volumes and its operating reliability. Contacting us means speaking with a partner who has more than 30 years experience with screens, their layout, construction, manufacture, operation and after-sales service and with several ten thousands of references worldwide is the unrivalled market leader in mechanical preliminary wastewater treatment.[...]

[...]Odense, Denmark[...]

[...]Amsterdam, Netherlands When the Dutch sewage treatment plant Amsterdam-West was modernised in 2006 it was redesigned for the treatment capacity of 1,000,000 PE. In addition, more than another 1,000,000 PE external sludge can be treated there. In the past, particularly the treatment of primary sludge was a problem in terms of the operating reliability of the entire sludge line. The solids contained in the different types of pre-treated sludge and from the transport tanks cause high wear and lead to unforeseeable maintenance work requirements on pumps, digestor internals and sludge dewatering systems. In order to remove the solids from the sludge four HUBER STRAINPRESS® units were installed and successfully commissioned in 2011 via the company Dutch Spiral. The supply included removal systems and screenings containers. Up to 75 m³/h primary sludge with a solids content of 1 to 6 percent is pumped through each STRAINPRESS® unit. The solids are retained by a conical-shaped screen with a perforation of 5 mm. When the screen surface is blinded with solid material, a filtration resistance develops on the screen surface. When the filtration resistance exceeds a certain pressure difference a removal screw inside the screen drum automatically starts to operate and cleans the screen surface. In the same process step the solids retained in the screen are compressed against a pneumatically operated pressure cone and then discharged. The screened primary sludge is transported to the digestor by the pressure of the feed pump. At Amsterdam-West the dewatered solids with a dry substance content of 40% are dropped into two troughs where the screenings from two machines are collected prior to being discharged into two odour-tight containers. The screenings are incinerated in an incineration plant that is installed directly next to the sewage treatment works. The high efficiency of the HUBER STRAINPRESS® units becomes especially evident when comparing them to the four screens that are installed in the STP inlet and have a bar spacing of 6 mm and width of 4 m each: The screens separate an annual screenings volume of 125 tons dry substance. A downstream screenings press compacts the screenings to a dewatering degree of 25%. In comparison, the downstream STRAINPRESS® units separate 600 tons dry substance a year, which is five times the volume the screens are able to remove. The integrated dewatering mechanism constantly achieves dewatering degrees of 40% and thus can produce a combustible product. Since the STRAINPRESS® is a completely odour-encased system, neither sludge nor screenings cause a corrosive or explosive atmosphere inside the building. The machines can nevertheless be completely opened very easily for inspection or maintenance. Since the installation of the HUBER sludge screening systems at the beginning of 2011 maintenance costs and shutdowns have been reduced significantly on STP Amsterdam-West. The operating reliability of HUBER STRAINPRESS® systems can be witnessed not only on the reference sites Amsterdam and Den Haag in the Netherlands but also on many other sites all over the world, such as Berlin, Barcelona, San Diego, Seoul, Marrakesh, etc. Benefits of STRAINPRESS® Sludgecleaner: High separation efficiency Significantly reduced operating costs Compact, fully enclosed design Proven in thousands of installations[...]

[...]Safety access ladder, with design certification and CE marking, in accordance with DIN EN 14396. Made of 1.4307 (AISI 304 L) stainless steel. Handles are crafted from a special high-rigidity profile 2.24 x 0.98 x 0.1 in. / 57 x 25 x 2.5 mm and are covered with durable PVC caps for enhanced grip. Rungs are made of U-profile with a perforated surface 1.18 in. / 30 mm providing slip resistance rated R 13. The step height is 11 in. / 280 mm, and the clear ladder width is available in 11.8 in., 15.7 in., or 19.7 in. / 300 mm, 400 mm, or 500 mm. Completely shielded arc welded, acid-treated in a pickling bath and passivated. Variants Type A) Vertical installation Including long wall mountings with 5.91 in. / 150 mm brackets that are adjustable in height for dowelling, ensuring a minimum tread depth of 5.91 in. / 150 mm from the wall to the center of the rung. Type B) Angled, wall mounting With hooks at the top end to hook into the supplied clamp, with holders at the bottom end to be mounted to the wall, with rubber buffers for wall protection. Options 1.4404 (AISI 316 L) stainless steel Stainless steel mounting material: stud anchors Adjustable wall brackets Rest platform, foldable, for type A Entrance aid in accordance with DIN 19572: Access ladders must be equipped with a handhold at their exit. This requirement is met if one or both handles project at least 3.6 ft. / 1.1 meters beyond the exit height. This projection should be considered when selecting the appropriate ladder length.[...]

[...]Safety access ladder with guard rail, with design certification and CE marking, in accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel. Designed to accommodate an insertable entrance aid, this ladder complies with UVV regulations requiring ladders with heights of 9.8 ft. or 16.4 ft. / 3 m or 5 m to include fall protection devices. Manufactured in accordance with DIN EN 14396, the ladder is constructed from 1.4307 (AISI 304 L) stainless steel. The handles are made of a high-rigidity special profile (57 x 25 x 2.5 mm), covered with PVC caps for added comfort. The rungs are made of a U-profile with a perforated surface, 30 mm in height, and feature slip resistance R 13. The step height is 11 in. / 280 mm, with available clear ladder widths of 15.7 ft. or 19.6 ft. / 400 mm or 500 mm. Included with the ladder are 5.9 ft. / 150 mm long wall-fixing brackets for bolting (providing a distance from the wall to the middle of the rung), and a safety guard rail is fixed to the middle of the ladder. The entire ladder is completely shielded arc welded, acid-treated in a pickling bath, and passivated for durability and corrosion resistance. Options 1.4404 (AISI 316 L) stainless steel Fall arrestor type S5c with self-unfolding safety belt type HSE-BFD and spring safety hooks certified by “TÜV SÜD PRODUCT SERVICE GmbH“, CE 0123, suitable for safety guard rail Safety belt in accordance with EN 361, form A (breast-shoulder-crotch belt), suitable for safety guard rail Stainless steel mounting material: stud anchors Rest platform, foldable Entrance aid in accordance with DIN 19572 Access ladders required to have a handhold at their exit. This requirement is considered met if one or both handles of the ladder extend at least 3.6 ft. / 1.1 m beyond the exit height. This projection must be taken into account when selecting the ladder length! Refer also to our dimension sheet for the entrance aid. The following entrance aid with guard rail options are available (see following pages): Insertable entrance aid, pivoted, type EH FSS D, L = 4.1 ft. / 1260 mm Insertable entrance aid, type EH FSS, L = 4.1 ft. / 1260 mm Insertable entrance aid, type EH FSS ‘Köln’, L = 5.5 ft. / 1680 mm, with additional rung[...]

[...]Safety climbing device, with design certification and CE marking, in accordance with DIN EN 14396, made of 1.4307 (AISI 304 L) stainless steel. When ladders are used as part of the work, and the potential for falls exists, OSHA may require the use of a personal fall arrest system (safety harness) to prevent injury. This is especially relevant for fixed ladders extending more than 24 feet, which must have a fall protection system such as a harness with a lanyard or self-retracting lifeline, as per 29 CFR 1910.28(b)(9) . The handle at the center is designed as a safety guard rail, equipped with bottom and top trip gear that can only be undone by hand. The climbing rungs are made of a U-profile with a perforated surface, 1.1 in. / 30 mm in diameter, offering slip resistance R 13 and lateral slipping limits. The step height is 11 in. / 280 mm, with wall fixing brackets included (maximum distance of 33 in. / 840 mm). The ladder also features a coupling for an insertable entrance aid. The entire structure is completely shielded, arc welded, acid-treated in a pickling bath, and passivated for enhanced durability. The following entrance aid with guard rail options are available : Insertable entrance aid, pivoted, type EH FSS D Insertable entrance aid, type EH FSS Insertable entrance aid, type EH FSS ‘Köln’ Options 1.4404 (AISI 316 L) stainless steel Fall arrestor type S5c with self-unfolding safety belt type HSE-BFD and spring safety hooks certified by “TÜV SÜD PRODUCT SERVICE GmbH“, CE 0123, suitable for safety guard rail Safety belt in accordance with EN 361, form A (breast-shoulder-crotch belt), suitable for safety guard rail Stainless steel fixing material: stud anchors Rest platform, foldable Entrance aid in accordance with DIN 19572 Access ladders must be equipped with a handhold at the exit. This requirement is considered fulfilled if one or both of the ladder handles extend at least 3.6 ft. / 1.1 meters above the exit height. This projection must be taken into account when selecting the ladder length! Refer also to our data / dimension sheet for the entrance aid.[...]

[...]San Diego, USA Because inadequate filtering was allowing hair, fiber and sand contaminants to work their way through its treatment process, The City of San Diego Public Utilities Department Wastewater Branch (the Branch) sought out sludge cleaning technology that could integrate into its existing system. In an interview with Senior Plant Technology Supervisor, Ted Taylor, Huber Technology learned how its sludge screening technology helped Ted and his crews realize benefits that reached far beyond simply reducing contaminants. By putting six HUBER STRAINPRESS® Sludgecleaner SP units in place, the Branch realized benefits far beyond digester efficiencies. In addition to heightened performance, Ted and his crews have experienced: Reduced downtime. Reduced maintenance demands. Extended equipment life cycles. Fewer replacement parts. Higher quality sludge end-product. More efficiently burning methane gas. Challenge: The Branch noticed heating and mixing problems as well as a significant build-up of sand at the bottom of its six digesters that was resulting from the inadequate screening of raw sludge. They were regularly cleaning a 10 to 15 foot layer of hair, plastic and grease from the top of the digester contents. These issues contributed to inadequate mixing within the digesters. Faltering digester performance manifested in: Reduced gas production. Quality issues with end-product sludge. Frequent need for cleaning and repair. Accompanying the performance issues were maintenance issues that consumed significant technician man hours and increased the department’s replacement parts costs. A new screen system was tested using temporary piping outside of the digesters. The success of the test resulted in a $300 million to upgrade to the treatment plant that included the installation of integrated HUBER STRAINPRESS® Sludgecleaner SPs as feature of the plan. Solution: The Branch originally put five HUBER STRAINPRESS® Sludgecleaner units from Huber Technology in place in its Point Loma facility. The technology was so beneficial that the five existing units were upgraded and an additional unit purchased, bringing the Branch’s grand total of Strainpress Sludgecleaners to six. Huber Technology’s STRAINPRESS® systems screen sludge in-line without breaking line pressure. It is implemented within the existing structure to keep the process working very smoothly. No extra filtering is added at the end of the line and – because the screenings are filtered out along the way – the equipment down the entire line endures less stress and is less prone to breakage. Less matted hair & fiber = Improved process efficiencies With less contaminant making its way through the process, performance indicators immediately showed improvements. Less matted hair & fiber = Less maintenance & repair After the STRAINPRESS® implementations, the maintenance team was able to reduce the frequency with which it cleans its twelve heat exchangers from a monthly to a quarterly schedule. Additionally, fair fewer repairs are needed - resulting in decreased parts and manpower costs and less process downtime. For example, chopper pumps are used to recirculate sludge during the treatment process. Because almost all contaminants are extracted by the HUBER STRAINPRESS® Sludgecleaner SP before the sludge reaches the chopper pumps, their lifecycles have been extended. Less matter hair & fiber = Higher quality end-product The quantity and quality of the methane gas and the sludge end-products have improved. Methane gas produced in the digesters is used to internally to generate electricity. The Branch sells its surplus methane gas end-product – enough to supply 2000 homes per month – to the electric grid. The unwanted buildup of useless material in the digester tanks prohibits the maximum amount of gas to be produced. Sludge is pumped to the metro bio-solid facility and used in soil augmentation. Improving the quality of its sludge enables the Branch to keep its sludge end-product graded at the Class B level required for soil additive use. Senior P.T. Supervisor Ted Taylor Quotes “Strainpress technology helps us reduce the burden on our pumps, our heat exchangers and our maintenance crews. We’ve significantly reduced costs that go along with these factors – and we haven’t even included cost reductions in plant energy use and saved downtime.” “The removal of contaminants or screenings – such as hair, fiber and sand – from raw sludge was crucial to ensuring maximum efficiency within our digesters and throughout our treatment process.” “We noticed stark increases in the performance of treatment equipment – such as the digesters – and increased efficiency across our entire process.” “A reduction from 12 to 4 may not sound like much, but when you multiply the frequency by our dozen exchanges it is significant. 144 yearly cleanings are reduced to 48 – that is a tremendous 67% reduction in workload and costs.” “Making sure that we do the best possible job in removing contaminant screenings before they reach the anaerobic digestion phase helps us maximize our potential for generating end-product. Without the Strainpress® Sludgecleaner SP technology, we would not produce the quantity or the quality methane gas and soil additive that we produce from our bio-solids today.”[...]

[...]Online[...]

[...]Increasing operational safety for pumping stations Pumps and lifting units are used where wastewater needs to be lifted to a higher level so it can be passed further on by gravity. However, the solids contained in the wastewater (coarse materials, foreign matter, fibers) often lead to a failure of the units used, as they cause operational downtimes due to clogging and blockages. Labor-intensive manual cleaning is required to restore the function of the units or, in the worst case, they even need to be replaced. To ensure trouble-free and reliable operation of a pumping or lift station, the installation of an upstream screening system is the best solution. HUBER has special screens and screening systems in its product range, which are especially suitable for pumping stations, shaft structures, or lift stations and which can be used both for sewage treatment plants and in the sewerage system. This increases the operational safety and availability of the pumping stations and significantly reduces material and personnel costs. For smaller applications, the HUBER Pumping Stations Screen ROTAMAT® RoK4 is particularly suitable, for larger applications, the HUBER Multi-Rake Bar Screen RakeMax ® , the HUBER Multi-Rake Bar Screen RakeMax® CF , and the HUBER Grab Screen TrashLift are the right choices.[...]