METHOD OF WASTE WATERS BIOLOGICAL PURIFICATION AND THE DEVICE FOR ITS REALIZATION Russian patent published in 2006 - IPC C02F3/30 

FIELD: preservation of the environment; methods of biological purification of waste waters.

SUBSTANCE: the invention is pertaining to the field of environmental control and may be used in a municipal services and different branches of industry at construction of new and renovation of the existing Waste waters disposal plants. Waste waters together with a mixture of the suspended active sludge and free-floating nozzles are fed into a bioreactor containing an anaerobic area and an aerobic area. In an aerobic area the mixture is divided into two streams. One stream is returned for mixing with the initial waste waters, and the other stream is guided into a desilter for a preclarification with production of the dense active sludge being returned in the aerobic area, and a mixture of excessive sludge and the biologically purified waste waters. Conduct a controlled feeding of the air into the bioreactor. In the anaerobic area the waste waters are forced in a circulating motion in the closed channel formed at least by one septum by mechanical or pneumatic action. The reservoir of the device is supplied with the water-feeding and water-withdrawing chutes. The desilter is supplied with a septum not reaching to the bottom the reservoir with opening and stream-guiding deflectors. The technical result of the invention is an increased degree of the waste waters purification from suspended substances, and also from organic compounds, ammonium compounds and phosphor; exclusion of conditions for increasing concentration of metabolism products.

EFFECT: the invention ensures an increased degree of the waste waters purification from suspended substances, organic compounds, ammonium compounds and phosphor, exclusion of conditions for increasing concentration of metabolism products.

13 cl, 1 tbl, 4 dwg