SEWAGE TREATMENT PLANT Russian patent published in 1995 - IPC

FIELD: sewage treatment of small populated points. SUBSTANCE: the plant uses feed and discharge pipelines, pumping plant with a pump, transfer pipeline and receiving reservoir, clarifier, balancing reservoir with a discharge dosing tank, biological oxidizer and secondary sewage tank. The clarifier is made as a septic and is combined with the receiving reservoir of the pumping plant, and the biological oxidizer is made as a biological filter with descending current of water. This provides for accumulation of the diurnal amount of sewage in the receiving reservoir, two-step biological treatment of water (anaerobic treatment in the receiving reservoir in the first stage, aerobic treatment in the biofilter - in the second stage), and balancing of concentration of contaminations at water transfer to the discharge balancing reservoir. EFFECT: facilitated procedure of sewage treatment. 3 dwg