COMPOUND METHOD FOR REAGENTLESS TREATMENT OF WASTE WATER AND BRIQUETTING SLUDGE Russian patent published in 2011 - IPC C02F9/12 C02F1/28 C02F1/32 C02F1/46 C02F1/74 C02F1/78 C02F11/00 

FIELD: chemistry.

SUBSTANCE: compound method for reagentless treatment of waste water and briquetting sludge comprises two steps. The following operations are performed at the first step: distributed discharge of water into the receiving section of a settling tank in which suspended particles and immiscible liquids are separated according to density which is higher or lower than density of water, suspended particles and immiscible liquids with density higher than density of water accumulate and are held at the bottom of the settling tank; intense deposition of suspended particles and immiscible liquids with density higher than density of water at the bottom of the settling tank in the next sections; physical-electrical treatment in order to intensify deposition of dirt in series-arranged clarification tank lying on the length of the settling tank with mechanical offloading of the deposited sludge with a drag drainage conveyor into a mixture, where binder, filler and a neutraliser are added, and the sludge is stirred and pressed, and the obtained briquettes are disinfected in microwave ovens. The second step, which is realised using series-arranged devices, involves additional physical-electrical treatment of water, deposition of suspended particles, aeration and ozonation of water, collection of the sludge deposited in the devices, and said sludge is sent to the disinfection part of the drag conveyor.

EFFECT: method increases efficiency of treating waste water.

12 cl, 1 dwg