METHOD AND APPARATUS FOR AUTOMATIC CONTROL OF AERATION TANKS Russian patent published in 2014 - IPC C02F3/02 G05D27/00 

FIELD: chemistry.

SUBSTANCE: method for automatic control of aeration tanks involves feeding waste water into aeration tanks (8, 10) through controllers (7, 9) with actuating mechanisms (16). Signals from the waste water (1) flow sensor and sensors for measuring the degree of contamination of influx of waste water (3) are transmitted to inputs (17) of a logic programmable unit (6) with an established mathematical model. The logic programmable unit (6) compares the current load with a given constant load for the first group of aeration tanks (8) and transmits the signal to the waste water (7) feed controller, which enables to feed waste water with variable flow rate into the first group of aeration tanks (8) and a constant hourly load on waste water contaminants. The remaining portion of waste water is fed with a variable flow rate through a second waste water (9) feed controller into the second group of aeration tanks (10) with variable specific load on waste water contaminants. The apparatus has sensors of the amount of recycled active sludge (4), sensors for measuring the degree of contamination of waste water (3), outputs of which are connected to corresponding inputs (17) of the logic unit (6).

EFFECT: invention increases the effectiveness of aerobic biological treatment of waste water and reliability of the process of operating treatment facilities, improves the quality of the treated waste water.

2 cl, 1 dwg