DEVICE FOR SEWAGE CLARIFICATION Russian patent published in 2005 - IPC

FIELD: sewage purification; combined devices for settling and clarification of sewage.

SUBSTANCE: the invention is pertaining to the field of sewage purification, in particular, to combined devices for settling and clarification of sewage. The device for clarification of sewage includes: a body divided by vertical partitions and attached to them inclined partitions into chambers- tiers communicating among themselves through slit clearances; a unit of feeding of the sewage located in the lower tier; units for withdrawal of purified water and an active sludge; a tubular box mounted along the axis of the body between the vertical partitions. The inclined partitions are supplied with a biological loading. The value of clearances between a wall of the body and the inclined partitions is increasing from the upper tiers downwards. The inclined partitions in the place of their fastening to the vertical partitions are supplied through a tier the stream directing windows. Above the upper tier there are a sieve-shaped diaphragm and a perforated collector of the purified water connected with a pipeline of the purified water withdrawal through the annular clearance. The tubular box is made out of the inner pipe tube linked with the pipeline of the sludge withdrawal and the outer pipe connected with a near bottom conical part of the body. The ratio of the cross section area of the inner pipe the cross-section area of the outer pipe makes 1:1.25 - 1.5, and the area of each clearance for the purified water withdrawal is in the ratio to the area of cross-section of the outer pipe as 1:1.25 - 1.5. The technical effect is an increased degree of clarification of sewage water, exclusion of periodicity in the process of the sludge removal and necessity to use a pump for this purpose.

EFFECT: the invention ensures an increased degree of clarification of the sewage water, exclusion of periodicity in the process of the sludge removal and necessity to use a pump for this purpose.

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