METHOD AND INSTALLATION FOR MICROBIAL TREATMENT OF WASTE WATERS Russian patent published in 1998 - IPC

FIELD: waste water treatment. SUBSTANCE: method is accomplished by the aid of immobilized consortium of 7 microorganism cultures with different destructive spectrum, two of the cultures possessing considerable emulsifying activity. Treatment is effected under flow and aeration conditions on compact transportable installation. The latter contains waste water-supply unit, bioreactor, treated water- discharge unit, thermostatically controlled accumulation tank and hydrocyclone installed before accumulation tank. The latter is divided into two sections separated by a vertical barrier positioned below upper edge of the tank. Bioreactor encloses four in-series connected aerated columns. On the bottom of each column, attachment to fix charge with immobilized consortium of microorganism stains is placed. Accumulation tank and columns are connected in such a way that water being treated flows through columns in upward direction, and the two sections of accumulation tank and columns are fitted with shut-off valves. EFFECT: enhanced treatment efficiency (94-98%). 8 cl, 3 dwg, 5 tbl