APPARATUS FOR BIOLOGICAL PURIFICATION OF SEWAGE WATER Russian patent published in 2007 - IPC C02F3/00 C02F9/14 B01D25/00 

FIELD: agricultural engineering and community facilities.

SUBSTANCE: apparatus has reservoir 1, basic sewage water feeding system 2 and purified sewage water discharge system 3. Reservoir 1 is partly open and comprises closed receptacle chamber, methane tank chamber, clarification chamber 6, and biofilter chamber 7, said chambers being hydraulically communicated with one another. Biofilter chamber 7 has at least two sections hydraulically communicated with one another. Longitudinal separating partition 10 positioned between sections is equipped with drainage strip 11 provided in its upper part. Biofilter chamber 7 is equipped with throat communicating with atmosphere. Biofilter is positioned within both sections of chamber 7. One of sections of biofilter is used as inlet and is hydraulically communicating with methane tank chamber. Other section 33 of biofilter is used as outlet and is hydraulically communicating with clarification chamber 6.

EFFECT: compact construction, simplified manufacture and maintenance of single unit apparatus for purification of sewage water and bringing sewage purification quality to required level envisaged by sanitary regulations and norms of protecting surface water from contamination.

9 cl, 6 dwg