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[...]Reliable conveying technology for grit and mineral solids Grit is separated by sedimentation in grit chambers during wastewater treatment. The grit settling at the bottom of the grit chamber is then removed – usually discontinuously – from the grit chamber. Grit Feeding and Conveying HUBER offers different designs of grit traps for grit separation. All HUBER grit traps are equipped with an appropriate conveyor so that the separated grit can be discharged into a container or passed to further treatment in a grit washing plant . Depending on the grit chamber design, either grit discharge pumps or screw conveyors are used for grit removal. HUBER can also supply tailor-made screw conveyors for operationally reliable grit transport in concrete grit chambers. Feeding of grit processing plants For feeding the material to HUBER grit treatment plants, HUBER offers storage tanks with discharge screws. The mineral material to be processed is temporarily stored in the tank and fed to the grit processing plant by a screw conveyor. The HUBER storage tanks can be installed above or below ground and can optionally be equipped with a debris separator and/or dewatering unit.[...]

[...]Transport of Screenings Adapted conveying technology for wet and dewatered screenings The tasks of the conveyor technology range from the collection and forwarding of the screenings to the screenings treatment plant , to the transport and distribution of the treated screenings into one or more screenings collection containers. The tasks of the conveyor technology range from the collection and forwarding of the screenings to the screenings treatment plant , to the transport and distribution of the treated screenings into one or more screenings collection containers. Transport of Wet Screenings HUBER offers solutions for the transport of wet untreated raw screenings by launder channel or screw conveyors. Transport of Dewatered Screenings HUBER offers solutions for the transport of dewatered and treated screenings into containers. Solutions The most important criteria for the design is the maximum quantity of screenings to be transported (peak case). Basically, two material flows are to be distinguished. On the one hand the wet and untreated screenings and on the other hand the pressed and treated screenings. HUBER has extensive experience in this field and offers various solutions for reliable screenings transport: Conveying solutions for wet screenings For conveying screenings from the screening plant to the wash press, HUBER uses either screw conveyors or launder channels, depending on the application. Conveying solutions for dewatered screenings Depending on the project-specific conditions and taking into account the customer's request regarding the degree of automation, HUBER designs and implements the right solution for transporting screenings into one or more containers.[...]

[...]Transport of Screenings, Sludge and Grit Reliable conveying technology for different solids In municipal and industrial wastewater, in sludge treatment as well as in industrial processes, there are numerous requirements for which solids such as wet or dewatered screenings, wet or dry grit, dewatered, partially dried or fully dried sludge have to be transported from one location to another. In addition to the physical properties and quantities of the material to be conveyed, local conditions and the desired degree of automation, among others, must also be taken into account when choosing the right conveying technology. In municipal and industrial wastewater, in sludge treatment as well as in industrial processes, there are numerous requirements for which solids such as wet or dewatered screenings, wet or dry grit, dewatered, partially dried or fully dried sludge have to be transported from one location to another. In addition to the physical properties and quantities of the material to be conveyed, local conditions and the desired degree of automation, among others, must also be taken into account when choosing the right conveying technology. Transport Applications Transport of Screenings HUBER offers solutions for the transport of wet raw screenings as well as for the transport of dewatered screenings. Transport of Sludge HUBER offers conveying solutions for sludge dewatering, sludge drying and sludge incineration, so that dewatered and dried sludge can be reliably transported. Transport of Grit HUBER offers solutions for the transport of grit trap material as well as solutions for feeding material to grit treatment processes. Transport Requirements HUBER has implemented a wide range of solutions for the transport of screenings, grit and sludge and can offer a tailor-made solution for any transport requirements. Screenings Transport of wet screenings from a screen / screening system to the screenings treatment facility by launder channel or screw conveyor. Transport of washed and dewatered screenings into a container by screw conveyors. Grit Transport of wet and contaminated grit by pump or screw conveyor from the grit chamber Feeding a grit processing plant with mineral material Sludge Transport of dewatered sludge with screw conveyors into one or more containers Feeding of drying plants with dewatered sludge Transport of dried sludge into containers or silos Transport of dewatered, partially dried or fully dried sludge to an incinerator[...]

[...]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 and must be flexibly adapted to the project-specific boundary conditions.[...]

[...]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 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. 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.[...]

[...]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 0.20 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.[...]

[...]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 as well as 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.[...]

[...]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.[...]

[...]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.[...]

[...]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.[...]