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[...]Increasing operational safety for pumping stations Pumps and lifting units are used where wastewater needs to be lifted to a higher level so that it can be passed further on by gravity. However, the solids contained in the wastewater (coarse materials, foreign matter, fibres) often lead to a failure of the units used, as they cause operational downtimes due to clogging and blockages. Labour-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 [...]

[...]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 as well as corrosion-resistant duplex stainless steel and super duplex stainless steel. All steel parts are pickled and passivated in our own production[...]

[...]Targeted dosing of chemicals for better clarification performance with less consumption The use of chemicals such as acids, alkalis, flocculants or flocculation aids is necessary in many areas of wastewater treatment and sludge treatment in order to achieve the required process performance. Ideally, the right chemicals should be added in exactly the right dosage to avoid either underdosing or overdosing. While underdosing leads to reduced performance, overdosing leads to increased operating costs and can also have a negative impact on the process. The fluctuations in concentration and volume[...]

[...]Sustainable Use of our Waters Municipal wastewater contains between 5 and 15 mg/l phosphorus. If phosphorus is not adequately removed during wastewater treatment, it ends up in the receiving waters. In lakes and rivers, phosphorus acts as a nutrient that generally promotes and accelerates plant growth, especially algae growth, which has a negative impact on water quality and thus on the biotic communities in the water body. Reducing phosphorus inputs from municipal wastewater treatment plants is therefore a very important contribution to maintaining or achieving a good ecological status in [...]

[...]Reduce Volume of Industrial Sludge Through Thickening, Dewatering or Drying In the wastewater treatment process, substances are removed from the wastewater and accumulate as screenings or sludge. In addition, biological processes, but also physical and chemical treatment processes such as the flotation process that is frequently used in industrial wastewater treatment, lead to the formation of sludge. Residues can also arise directly from industrial production in very liquid form. Process Technology HUBER solutions for reduction of disposal costs Depending on the upstream process step, the [...]

[...]Reliable compliance with effluent values In conventional municipal wastewater treatment plants, the final settling tank is the last stage of the wastewater treatment process. The purpose of the secondary clarifier is to allow the activated sludge flocs and the finest suspended solids to settle and to discharge the clarified wastewater into the receiving water as free of solids as possible. Increasing hydraulic loads and changes in the settling behaviour of the activated sludge are the reason why wastewater treatment plants often do not reliably meet today's minimum requirements for solids retention[...]

[...]Screens for solids retention at sewer overflow structures for the protection of water bodies Structures with overflow are used to relieve the sewer system during rainfall. They either discharge the excess water/sewage/combined water directly into the receiving watercourse or initially store it temporarily. In practice, different types of structures can be found: Stormwater overflow: As soon as the water level in the sewer rises above a maximum permissible level, wastewater is discharged into the receiving water via an overflow channel. Stormwater overflow tank: When the rain weather begins,[...]

[...]HUBER solutions for permanent safe drinking water supply and distribution In water networks, many manholes are installed to accommodate branches, shut-off valves, backflow preventers and sampling points. The manholes must be securely covered and sealed, and well ventilated. In addition, they must be safely accessible via step irons or ladders. HUBER supplies permanently safe stainless steel components for manhole equipment: Manhole covers Venting chimneys Safety access ladders and safety climbing systems with guard rail Entrance aids Pre-fabricated stainless steel manholes HUBER stainless steel [...]

[...]Reducing screenings volume and disposal costs The screenings from municipal wastewater treatment mainly consist of household waste-like materials, faeces, paper and mineral particles. The screenings volume depends on the aperture size of the screening system. The solids content of municipal, untreated screenings varies from 5 – 20 %, depending on the type of screen. The organics contained in the screenings amount on average to approx. 90 % of the dry residue [DR]. The objectives of screenings treatment are: Dewatering of the screenings and thus reduction of screenings weight and volume. This [...]

[...]The first step of operationally reliable and efficient wastewater treatment The separation of solids in wastewater with screens and fine screening systems is the first step in municipal and industrial wastewater treatment. The main task here is to remove all coarse and foreign materials that could inhibit or hinder the function of subsequent wastewater treatment stages. The following factors, among others, must be taken into account when planning an operationally reliable solids separation solution: Maximum required hydraulic throughput Expected screenings quantities Required bar spacing or [...]