FIELD: chemistry.
SUBSTANCE: method of conditioning the mixture of sewage water and activated sludge where the concentration of suspended particles is from about 10 g/L to 30 g/L in the membrane biologic reactor includes supplement of the effective coagulating and flocculating amount of one or several water-soluble polymers from the row of amphoteric and cationic polymers. The amphoteric polymers are characterised by ratio of cationic charge equivalent to anionic charge equivalent in range from approximately 0.2 : 9.8 to 9.8 : 0.2.
EFFECT: bridging of filtrating membrane is prevented; volume of rectified sewage water is increased while investments and maintenance charges are reduced.
9 cl, 2 dwg, 12 tbl, 9 ex
