FIELD: process engineering.
SUBSTANCE: invention relates to treatment of residential waste water and may be used in minor residential areas, cottage settlements, camps, etc, as well as settlements located in permafrost zones. Proposed plant comprises effluents feed pipeline, grating, sand trap, primary settler, disc biofilter, secondary settler, decontamination assembly made up of contact reservoir and active chlorine generator arranged there ahead, sand and silt sites, drainage pump station, dechlorination assembly, biological ponds, botanic site, pump station to feed cleaned water to residential area, and filtration trenches for soil irrigation purposes. Disc biological filter comprises alternating perforated biodiscs from electropositive and electronegative materials, aluminium and copper respectively. Area of perforation makes 10-20% of biodiscs area.
EFFECT: closed-circuit water treatment system, higher efficiency of cleaning.
3 cl, 2 dwg, 1 tbl, 1 ex
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