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[...]Future-oriented and sustainable solution for heating and cooling of buildings The HUBER ThermWin process allows heating and cooling of buildings by using the wastewater in the sewer system as a regenerative energy source. Right below the ground, in sewers, is a hidden and seldom used source of energy: our wastewater. Its temperature is usually between 53° and 68° F / 12° and 20° C and hardly drops below 50° F / 10° C even in winter, making wastewater an ideal energy source for operating a heat pump. All larger buildings and local heating networks are suitable consumers of the heating energy obtained[...]

[...]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[...]

[...]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 [...]

[...]Protecting technical facilities against flooding Both our rivers and watercourses and the technical drainage systems (sewers) can only absorb limited amounts of precipitation. Depending on the degree of sealing and other local conditions, flooding can then occur above a certain precipitation intensity. As climate change is causing more heavy rainfall, the probability of flooding is likely to increase in the future. A variety of flood prevention measures The best protection against flooding is to prevent situations of extreme flooding from occurring in the first place. Any measures that allow [...]

[...]Clean and safe solutions for drinking water applications Drinking water must go from the drinking water reservoir into the mains in a hygienically perfect condition. There are therefore high demands on the structural design and hydraulic equipment of water reservoirs. Typically, the water surface in a reservoir is constantly in motion. While air streams out during filling, the water reservoir draws in ambient air during emptying. In this respiration process, particles contained in the air enter the drinking water along with oxygen and nitrogen. Since organisms such as germs, viruses, spores, or[...]

[...]Saalbach-Hinterglemm, Austria Fine screening systems are an interesting alternative to primary settling tanks when it comes to changing the sludge stabilization process from aerobic to anaerobic. Compared with a traditional primary clarifier with a retention time of 0.5 to 2 hours, a fine screen achieves the same or better reduction rates, which take effect within a few minutes whilst requiring only a fraction of the space and volume. Energy savings and biogas yield through carbon removal Switching from aerobic to anaerobic sludge stabilization can reduce aeration costs by around 20–25%. This [...]

[...]Totalphütte, Alps, Austria The Totalphütte was originally a site hut for Vorarlberger Illwerke AG and served as accommodation for the construction workers building the Lünersee lake dam. Since 1964, the Austrian Alpine Club has been running the hut as a mountain refuge. Following a number of refurbishments and the reconstruction of the hut – it was severely damaged by a dust avalanche in 2019 – it has since become a popular destination for walkers and those conquering the Rätikon’s highest peak, Schesaplana, at 2,965 m. Wastewater treatment remains an important issue even in high-alpine environments[...]

[...]Bickenbach, Germany The European water sector will face enormous challenges in the coming years. Implementing the new EU‑Urban Waste Water Treatment Directive (UWWTD) and ensuring the sustainable protection of our water resources will be a significant collective task. UWWTD is therefore rightly regarded as a milestone that will shape urban water management across Europe in the long term: stricter requirements for the removal of phosphorus and nitrogen, energy neutrality and, above all, the widespread introduction of the fourth treatment stage. All sewage treatment works with a capacity of more[...]

[...]Baden-Württemberg, Germany A fourth treatment stage is currently being built at the sewage treatment works in Schwäbisch Hall, Markgröningen-Talhausen, Vörbach-Pfalzgrafenweiler and Meßkirch in Baden-Württemberg. These treatment works have opted for the GAC (German: GAK) process, which uses granulated activated carbon for adsorption. Upstream of the trace substance removal stages, there is a multi-stream pre-filtration system at each site, all of which have been equipped with the new HUBER Pile Cloth Media Filter RotaFilt®. These reliably protect the subsequent GAC‑adsorption process from[...]

[...]Every wastewater regulation specifies a limit value for ‘lipophilic substances’, which in practice are referred to as grease. As a rule, more than 90 per cent of the total grease concentration is often present as dispersed grease particles and emulsified grease. Conventional grit and grease traps at sewage treatment works can only retain non-dispersed, floatable grease (DWA M760). The remaining dispersed substances are separated in the biological treatment section of the sewage treatment works. Various grit chamber solutions Factory-built grit chambers are often combined with grease traps ([...]