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[...]Suitable materials and effective corrosion protection for economical solutions The right choice of material for screens and screening machines is a key factor for their reliable and low-maintenance operation. For applications with river water and fresh water, we use 304 and 316L stainless steel. For applications in particularly corrosive seawater with high temperature and salinity, we use stainless steel in combination with corrosion protection, corrosion-resistant duplex stainless steel, and super duplex stainless steel. All steel parts are pickled and passivated in our own production. For [...]

[...]Various solutions for conveying dewatered and dried sewage sludge 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. When designing a particular transport solution, important criteria include not only the required transport capacity but also the sludge properties (moist, dry, sticky, dusty,...) and the desired degree of automation. Feeding and Removing Supply and[...]

[...]Various solutions for conveying sewage sludge The heart of an economical sludge dewatering system is the HUBER Screw Press Q-PRESS® , which is in use in thousands of installations worldwide. However, the right solution for the subsequent transport of the dewatered sludge into the provided containers is also of great importance for the implementation of an optimal and practicable dewatering process. HUBER offers various solutions for container filling, which can be differentiated in terms of sludge volume or sewage treatment plant size, number of containers and degree of automation. Solutions [...]

[...]Safe working in manholes – safe opening and access Manholes fulfill an important task in water supply and wastewater disposal. They are used where shut-off fittings in pipelines must be accessible, to control sections of very long pipelines, for aeration/deaeration, or access to complex installations (e.g. well shafts, pressure reduction shafts). Easy and safe access must be ensured in each individual application. Most of the manholes are entered from the top. This means that the operating personnel must open the manhole cover in order to be able to use an entrance aid for safe access. They must [...]

[...]The best access for your structure Accesses to structures for drinking water supply or wastewater disposal have high requirements. For drinking water supply structures, for example, a burglar-resistant door must be installed in accordance with DIN EN 1627. In the drinking water tank itself, access to the water chamber is required for maintenance. Pressure-tight doors are used for this purpose. To allow access above the water level, special water chamber doors must be used. In the field of drinking water supply and wastewater disposal, there are many shaft structures that require an access or [...]

[...]Efficient and reliable removal of coarse material from sludge For the operational safety of sludge treatment processes, it is advantageous if the sludge is as free as possible of coarse material and disturbing solids (e.g. paper, plastics, fibers, and hair). Otherwise, repeated malfunctions of aggregates and processes may occur in pumps, but also during thickening, dewatering, or drying, these can be time-consuming, costly to rectify, and require increased manpower. For the agricultural recycling practiced in many regions of the world, it also makes sense to separate all solids, such as plastic[...]

[...]Solutions for cost-efficient sludge dewatering Sewage sludge produced in municipal and industrial wastewater treatment plants requires dewatering prior to further treatment or utilization. Rising costs for sludge disposal make it necessary to concentrate the sludge to a high solids content. Mechanical sludge dewatering is used to reduce the amount of sludge by separating sludge water. A more or less firm sludge cake is produced. Prior to its dewatering, fed sludge is first flocculated by addition of polymers (sludge conditioning). Sludge Conditioning Economic Sludge Dewatering For the economic [...]

[...]Mechanical sludge thickening to reduce sludge volume Before sludge with a very high water content is subjected to further treatment, it is a good idea to reduce its volume by thickening. This also increases the solids content of the sludge. If sludge with a solids content of 1% is thickened to 6% solids, this gives a volume reduction of more than 80%. The thickening of the sludge is effected by separating sludge water; thin sludge becomes thick sludge. It is viscous but still pumpable. Sludge Volume Reduction Excess Sludge Thickening Sludge settles in gravity thickeners and is compressed by[...]

[...]Using the thermal energy of process water to reduce operating costs Much of the industrial wastewater comes from the food production sector: slaughterhouses, breweries and beverage industry, distilleries, and dairies. Wastewater from the chemical industry or mineral oil processing is also part of industrial wastewater. Independent of the specific industry sector, these different types of wastewater have one thing in common: the high energy content of the wastewater streams. Recovering thermal energy from process water The reuse of thermal energy already contained in the production cycle is becoming[...]

[...]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 [...]