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 Reference 1 - Sewage plant Altenrhein, Switzerland |
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The path of the sewage through the Sewage Plant
The waste water arrives the underground inlet channel into a rough through chamber. Large objects are held back by the rake system. The main pumping plant pumps the waste water to the computing building lain more highly. An automated computer takes large solids out. The screening arrived via conveyor in compact, is pressed out there and supplied to the refuse incineration plant. The water flows now into the detritus chamber, where it is ventilated from down. Sand and small, heavier foreign matter particles set off at the soil, with a circular scraper pushed into a funnel, from there to the sand silo are pumped, drip off and via hollow on a dump are transported. Vegetable oils and fats separate themselves in the separating basins. Subsequently, the water flows by the clearing tank, where mud and solids at the soil set off. A circular scraper pushes this material against the direction of flow into the green sludge funnels and floating materials into a swimming mud pit. The mud is pumped in the thikener. After the mechanical cleaning the biological one follows, here becomes organic carbon compounds and nutrients, which load waters extracted.
Sewage cleaning for 120'000 people.
Sewage inlet by dry weather: 400 l/s.
Sewage inlet by rain: 3'000 l/s.
Daily sludge: 300m3 / per person 2.5l.
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