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[...]Sharjah, UAE Population growth in Dubai and adjacent Sharjah is a consequence of rapid development. Population growth, enforced growing wealth and luxury, generate great strain on the infrastructure of these cities. All existing wastewater treatment plants are heavily overloaded. Several treatment plants are presently in the process of becoming extended and upgraded, but even when the construction and installation will be finished, the plants will hardly be able to treat the enormous and ever growing wastewater flows. Because of freshwater scarcity in this arid region, treated wastewater is viewed and reused as a valuable resource. In the Emirates, great portions of the treated effluents are reused for irrigation of parks and palm trees. For some time the United Arab Emirates have been evolving as a heaven for golf players. For example, the prestigious Sherjah Golf & Shooting Club was opened in 2005, though its golf course is not yet entirely completed. Water for the irrigation of this golf course is supplied from the largest wastewater treatment plant of the Emirate Sharjah, the Sharjah Main Sewage Treatment Plant (MSTP). Some of the treated effluent is supplied to the Sharjah Golf & Shooting Club via the Al Sweihat pump station. The supplied water is then distributed through an underground pipe network. The Sharjah MSTP was originally designed for a capacity of 80,000 m³/d (21 MGD). The actual inflow is around 162,000 m³/d (43 MGD). The plant is by 100 % overloaded. The secondary clarifiers are no longer able to retain the activated sludge and the final effluent contains a high concentration of suspended solids. This leads to frequent clogging of the irrigation nozzles at the golf course, some times enormous odour nuisance, and even to the formation of sludge ponds on the green. This prompted the management of the golf course to intervene and demand a fast solution of these problems from the Sharjah Drainage Section. The management of the Sharjah Drainage Section approached our local subsidiary, HUBER TECHNOLOGY MIDDLE-EAST, asked for our help and the proposal of viable solutions. It was rather obvious that our relatively “new” product, RoDisc® micro-strainer, could solve the problems. During several meetings with the management of the Sharjah Drainage Section and their consulting engineers we explained the simple and reliable operation of our micro-strainers. We could convince the decision makers that our RoDisc® filters would be ideally suited for their application. The tender was published in August 2006. HUBER RoDisc® Filters were specified as base of the bid, and sand filters were specified as a possible alternate in the tender documents. Technical data and guaranteed performance are shown in the following table. Based on these data we offered two units of our RoDisc® size 20, equipped with a 10 micron mesh. We submitted our proposal by the end of August and on November 8, 2006 we received the order for the “provision of polishers / secondary filters at the Al Sweihat pumping station”. Decisive for the customer’s decision to award this contract to HUBER was the comparison of our RoDisc® filters with sand filters: our filters are far more compact and easier to operate. A special challenge by this project was that HUBER TECHNOLOGY MIDDLE-EAST was not only responsible for supply and installation of the mechanical equipment, but had to assume all responsibilities of a main contractor. This meant that our subsidiary also had to plan and coordinate all work including earthwork, construction and pipe installation. Another challenge was presented by the fact that the entire project had to be finished within a period of six months. The deadline was May 15, 2007 – on this day the two RoDisc® were required to turn and operate successfully. Operation and maintenance of the system over a one year period after start-up were also included in the contract. Other challenges during construction and installation were a consequence of the confined space at the pump station and of the fact that the pump station is located in a preferred residential neighbourhood. For this reason construction and installation work was subject to stringent constraints. Construction work finally commenced during January, 2007. We decided to install each RoDisc® unit in a concrete tank and to bury these tanks up to two thirds of their height below ground. In this way we could comply with the requirement that neither the filters nor their containers may be visible from the neighbourhood. On the other hand, with this design, we could guarantee easy access for operation and maintenance. The wire mesh on the filter discs are washed with spray water that is supplied from the filter tank to each filter by two high-pressure pumps. The RoDisc® units were shipped in mid March 2007 and were installed into their tanks in early May. Commissioning took place on May 21 and was attended and supervised by representatives of the Sharjah Drainage Section. The RoDisc® Filters have now been in operation for almost an entire year and show excellent performance. The only problem for their operation is that the fed wastewater has solids concentrations that are continuously far above the limits that were specified in the tender documents. Suspended solids concentrations between 200 and 300 mg/l (ppm) are common and peak concentrations of up to 750 mg/l occur. We also had to discover that hair and fibre materials pass almost uninhibited through the entire treatment plant and constitute an additional load on the mesh of our RoDisc® filters. This much higher than specified solids load leads to elevated head loss through the filter mesh, high pressure thereon and a reduced hydraulic filtration capacity. However, in spite of these adverse conditions, the effluent quality of our RoDisc ®filters is excellent. The remaining suspended solids concentration in their effluent is between 10 and 20 mg/l. The managements of the Sharjah Golf & Shooting Club and of the Sharjah Drainage Section are both very happy with operation and performance of our RoDisc® filters. Conclusion: With these first two RoDisc® micro-strainers that we sold and installed at the Arab Golf, we could impressively demonstrate their outstanding performance in respect to capacity and effluent quality – not only during demonstrations and pilot tests, but in the field, under extremely difficult conditions. RoDisc® micro-strainers are very effective and efficient for this type of application, i.e. for straining the effluent of hydraulically overloaded wastewater treatment plants. The need for such post-treatment becomes ever more common, as existing wastewater treatment plants become overloaded, or effluent requirements become more stringent. Our RoDisc® filters are ideal solutions for such challenges. Particularly in arid and booming regions suffering from freshwater shortage, such as in the Middle East, wastewater is a valuable resource. Our RoDisc® micro-strainers guarantee consistently low suspended solids concentrations in wastewater treatment plant effluents.[...]

[...]Bickenbach and Uhldingen, Germany How can a fourth treatment stage be optimally integrated or retrofitted, taking into account all individual requirements and boundary conditions? This is a question that many municipalities, operators and wastewater associations will soon be asking themselves. In Bickenbach (Hesse) and Uhldingen (Baden-Württemberg), they are already one step ahead. Those responsible there have already taken action and assumed an important pioneering role with the start of large-scale implementation. Bickenbach STP Hesse’s first quaternary treatment stage In Bickenbach, the official groundbreaking ceremony for what will probably be Hesse's first fourth treatment stage took place in spring 2022. The future plant will consist of an ozonation unit with a downstream four-line adsorption stage and an upstream two-line cloth filtration system. Sixteen HUBER Activated Carbon Filter CONTIFLOW® GAK and two HUBER Pile Cloth Media Filter RotaFilt® units will be used for primary treatment of the wastewater. The ozone reactor will be equipped with the proven HUBER Pressure-Tight Door TT7 and two high-quality HUBER Manhole Covers SD5. Commissioning of the plant is scheduled for spring 2024. Thus, the Bickenbach WWTP will make an important contribution to the protection of the Hessian Marsh, which is the largest groundwater reservoir in Germany and provides drinking water for about two million people in the Rhine-Main area. Uhldingen-Mühlhofen WWTP: 24 HUBER Active Carbon Filter CONTIFLOW® GAK The combination of ozonation and activated carbon filtration is also applied at the Uhldingen-Mühlhofen wastewater treatment plant – on a technical scale as large as never before installed in Baden-Württemberg. HUBER supplies the activated carbon stage with a total of 24 HUBER Activated Carbon Filter CONTIFLOW® GAK for biological post-filtration and adsorption. The installation of the activated carbon filters was successfully completed this summer. Commissioning of the 7.4 million euro project is planned for 2023. Then, persistent and hazardous trace substances such as pharmaceutical residues, hormones and flame retardants will be reliably separated before they enter Lake Überlingen. This part of Lake Constance supplies around four million people in large parts of Baden-Württemberg with about 135 million m³ of drinking water annually.[...]

[...]Regen, Germany The town Regen in the administrative district of Lower Bavaria, is also known as a climatic health resort and boasts numerous sights, buildings and natural monuments. Regular events include the annual Pichelsteiner Festival. Named after a traditional dish, it has grown to become the largest festival in the Bavarian Forest and a major attraction in the region. This makes it all the more important to have a fully functional 24-hour wastewater treatment plant, such as the Regen STP, in place for every event. Energy-efficient and powerful sludge dewatering The outdated and energy-intensive chamber filter press was replaced with an energy-efficient and powerful sludge dewatering system. The main focus of the new dewatering system was the energy and disposal costs of the sludge to be dewatered. After visiting numerous plants on the market, the Regen wastewater treatment plant opted for the screw press principle. The decision was made due to its low specific power consumption and maintenance costs, as well as the very high degree of dewatering achieved in continuous operation. The low speed and specific connected load also appeared to be important factors and were included in the decision-making process as they are sustainable and highly efficient. Tender In 2023, two sludge dewatering plants featuring a fully automatic container filling system were put out to tender. The tender also specified the entire pump technology, polymer preparation, switchgear, control system, and all other components required for fully automatic dewatering operation. Contract awarded to HUBER SE The decisive advantages – high discharge dry solids content, complete stainless steel construction (rather than a cheap mixed construction), minimal operating costs and trouble-free, unattended 24-hour operation – tipped the scales in favour of HUBER SE being awarded the contract. The following components were implemented by HUBER following the order placed at the end of 2023: 2 HUBER Screw Press Q-PRESS® 440.2 Pump technology with flocculant preparation and piping Automatic conveyor technology with sludge distribution, including full fill control and level monitoring Electrical control system Delivery, installation, commissioning, process training Implementation Following the construction kick-off meeting, an intensive planning phase was followed by the implementation of an optimal process solution and its integration into the existing structure in mid-2024, in line with the ideas of the operator and the engineering firm. The guaranteed values have been far exceeded Since commissioning in August 2024, the resulting digested sludge with 3–3.5% dry matter and 51–54% loss on ignition has been dewatered to over 32–35% dry matter. The guaranteed values specified in the offer have been far exceeded in practice, much to the delight of the operators. We would like to take this opportunity to thank the town of Regen, the entire operating staff, and the responsible planning office, EBB Ingenieurgesellschaft, for placing their trust in us, and we wish them continued success with the installed systems.[...]

[...]Shanghai, China A total of twelve HUBER Fine Screens ROTAMAT® Ro1/2600 were supplied for the second construction phase of WWTP Zhuyu There is hardly another city worldwide that is growing with such a breath-taking speed as Shanghai, China’s boom town. But such rapid growth comes at a high price. Shanghai’s infrastructure can hardly cope. It happens time and again that the power stations can not supply enough electricity, or that even the 12 lane main highway is jammed to a stand-still. Of course, sewers and treatment plants are also under strain and the city administration is doing its best to keep up. Seven years ago we supplied a pair of ROTAMAT® Fine Screen units Ro1 with a screen basket diameter of 2.6 m for the Bai Long Gang wastewater treatment plant, serving a high-tech industrial park in the city district Pudong. Our screens proved their excellent performance and reliability, which is particularly important for mechanical wastewater pre-treatment. Because of this excellent reference installation, Ro1 fine screens were also selected for the first construction phase of the plant Zhuyuan in 2003 and four Ro1 screens with a screen basket diameter of 2.2 m were ordered and installed. Only three years later the second construction phase began. This time we received an order for twelve ROTAMAT® Ro1 fine screens, again with a 2.6 m diameter, the same size as supplied seven years earlier. They can handle a 500,000 m³/d wastewater flow. However, this time we supplied twelve ROTAMAT® Ro1 screens of an improved version that maintains all its excellent features, but is less expensive to manufacture. The screens were installed in twelve parallel channels over a width of 42 m. They are lined up like pearls on a string.[...]

[...]Over 100 completed orders, a total of almost 300 machines in operation in 22 different countries and yet there are still applications where there is a need for a trial. "Trial makes perfect", be it on municipal wastewater treatment plants or for special industrial sludge, the spectrum is diverse. For this purpose, HUBER provides a trial unit of the Sludge Turner SOLSTICE ® , called "HUBER Baby SOLSTICE ® ", on a reduced scale. In the field for over 10 years The trial unit has now been in operation for over 10 years. After trials in Germany, the plant was mainly used in South America. Since its return at the beginning of the year, it has already made stopovers in the south of France and Italy. Simplicity and technical sophistication The trial unit is characterised by its simplicity while at the same time integrating a large number of technical refinements. Transport in a standard 20' container enables fast and cost-effective delivery both by lorry and ship. Once removed from the container, installation and commissioning can be completed in less than two days by a HUBER service technician. HUBER recommends a test period of four to six weeks. During this time, two to three full runs of sludge drying can be carried out, depending on the weather conditions and the test objective. The fully automatic control system with integrated remote access monitors the drying process by measuring the weight loss, documents exhaust air data (in particular the ammonia values) and controls the drying process depending on the weather data. In areas with less favourable climatic conditions, tests can also be carried out with floor heating switched on. The effort required on site is kept to a minimum. The operator helps to set up and dismantle the system and supervises the trials independently during the test period. A dedicated telephone hotline is available to the operator for questions and optimisations. On completion of the trials, the operator receives a complete data set of the test results and a final report. Do you have supposedly difficult sewage sludge to dry or would you like to know more about the drying behaviour of your sewage sludge? Contact us and we will try together.[...]

[...]Las Vegas, NV USA[...]

[...]Sustainable processing and recycling of mineral waste Mineral-rich wastes such as street sweepings, sludge from sewer flushing and cleaning of stormwater tanks and gullies, and grit trap material contain not only grit and gravel but also trash (e.g. packaging material), coarse materials (e.g. stones, wood, glass, metal parts), and organic materials (e.g. soil, leaves, grass, fruit stones and cereal grains). For the processing and treatment of such mineral wastes HUBER offers individually designed grit treatment processes. Process Process technology according to requirements Depending on the required processing capacity, the composition of the input material to be treated, the requirements on the output material and other general conditions, different process engineering concepts are necessary. The main process stages of grit treatment are: HUBER Grit Acceptance System RoSF7 Receiving and intermediate storage tank for the material delivered and to be processed (e.g. sewer grit, road sweepings). HUBER Wash Drum RoSF9 The wash drum is used to separate all coarse material and foreign matter that would make further treatment difficult. HUBER Coanda Grit Washer RoSF4 The grit washer separates organic matter from the mineral fraction and produces clean grit with an organic content < 3%. Wash water treatment If the wash water required for grit processing is not provided externally, the grit processing plant can also be supplemented with a wash water treatment system. The required water is then purified and can be reused (water cycle). On the basis of its wealth of experience in developing complete grit treatment systems, HUBER is able to provide a tailored concept for each individual grit treatment project.[...]

[...]Grit washing for Reduction of the Organic Matter Contained in Grit Grit and mineral substances from the grit chambers of municipal wastewater treatment plants usually contain a large to very large proportion of organic substances, which have settled in the grit chamber together with the grit. Grit washing has become an established process for the treatment of grit from grit chambers over the last decades. HUBER Grit Washing Plants have been in operation worldwide for more than 25 years and have set the standard for modern and efficient processing of grit from wastewater treatment plants to produce a valuable product for reuse. Process The Target of Grit Treatment Due to the proportion of organic substances, the heterogeneous grit-organic mixture has a relatively low dry residue of 40 – 70 % DR and a relatively high loss on ignition of up to 80 %. The purpose of a well-performing grit treatment system is to first remove the grit down to a grain size of 0.2 mm and then to separate the valuable material sand and the mineral fraction from the organic contaminants mentioned. The treatment of grit produces a valuable resource with a low loss on ignition (< 3 %) and a high dry residue (> 90 %). This reduces disposal costs and provides a product that can be reused as a secondary raw material.[...]

[...]From the screen to the screenings wash press – reliable and operationally safe solutions for conveying screenings HUBER offers two different solutions for providing tailor-made and project-specific conveying systems for wet and untreated screenings: Screenings transport by launder channel The screenings to be treated are discharged from one or more screens into the launder channel. Sufficient wastewater or process water is used to flush the screenings into the screenings wash press. The flushing water also serves as wash water for screenings washing. HUBER Launder Channels HLC can be individually adapted to suit the customer’s requirements. Even large screenings quantities can be reliably transported over long distances (up to 1,574 in. / 40 m). The series connection of one or more screenings wash presses is possible, so that redundancy can also be provided if desired. Screenings transport by screw conveyor The HUBER Screw Conveyor Ro8 T (trough version) and the HUBER Screw Conveyor Ro8 (closed tube version) can be used for almost any conveying requirements and are frequently applied also for the transport of untreated screenings. Long conveying distances of more than 1,181 in. / 30 m can be handled with HUBER screw conveyors as well as different gradients up to vertical transport. When connecting one or more screens to one or more screenings wash presses, the HUBER Screw Conveyor Ro8 T and the HUBER Screws Conveyor Ro 8 have proven themselves in practice worldwide. Conveying Systems HUBER offers two different solutions for providing tailor-made and project-specific conveying systems for wet and untreated screenings: Screenings transport by launder channel The screenings to be treated are discharged from one or more screens into the launder channel. Sufficient wastewater or process water is used to flush the screenings into the screenings wash press. The flushing water also serves as wash water for screenings washing. HUBER Launder Channels HLC can be individually adapted to suit the customer’s requirements. Even large screenings quantities can be reliably transported over long distances (up to 40 m). The connection of one or more screenings wash presses is possible, so that redundancy can also be provided if desired. Screenings transport by screw conveyor The HUBER Screw Conveyor Ro8 T (trough version) and the HUBER Screw Conveyor Ro8 (closed tube version) can be used for almost any conveying requirements and are frequently applied also for the transport of untreated screenings. Long conveying distances of more than 30 m can be handled with HUBER screw conveyors as well as different gradients up to vertical transport. When connecting one or more screens to one or more screenings wash presses, the HUBER Screw Conveyor Ro8 T and the HUBER Screws Conveyor Ro 8 have proven themselves in practice worldwide.[...]

[...]Transport of Sludge Reliable transport of dewatered and dried sludge In municipal and industrial wastewater treatment, but also in industrial processes, sludge is produced which is usually fed to one or more further treatment stages such as thickening, dewatering, drying, and incineration. Depending on the consistency of the sludge, which is mainly defined by the water content, different conveying technologies (pumps, screw conveyors, belt conveyors, ...) can be used. In municipal and industrial wastewater treatment, but also in industrial processes, sludge is produced which is usually fed to one or more further treatment stages such as thickening, dewatering, drying, and incineration. Depending on the consistency of the sludge, which is mainly defined by the water content, different conveying technologies (pumps, screw conveyors, belt conveyors, ...) can be used. Applications for Sludge Transport Feeding Containers with Dewatered Sludge For the transport of dewatered sludge into containers, HUBER offers economical and reliable solutions for all requirements. Sludge Supply and Removal for Drying Plants Sludge transport plays an important role in the planning and construction of sludge drying plants. On the one hand, the dewatered sewage sludge has to be brought into the dryer, and on the other hand, the fully or partially dried sewage sludge has to be transported away from the dryer. Transportation HUBER offers tailor-made solutions for both dewatered and dried sludge for the following conveying tasks: Feeding containers with dewatered sludge After dewatering the sludge in a HUBER dewatering machine , the sludge has to be conveyed into containers. HUBER offers various concepts for reliable and practical container feeding. Feeding and removal of sludge for drying plants: The transport of the dewatered sludge to the dryer and the removal of the dried sludge are important elements in the overall drying process which must be flexibly adapted to the project-specific boundary conditions.[...]