METHOD OF CLEARING TURBID WATER VIA TREATMENT WITH CATIONIC FLOCCULANT IN SUPPLYING PIPELINE Russian patent published in 1997 - IPC

FIELD: water purification. SUBSTANCE: invention refers to surface water sources. Flocculant is introduced into pipeline or into water before its feeding into pipeline, which is utilized for mixing flocculant with water and aggregating suspended materials. In this case, distance from flocculant introduction point to settlers is 500 to 60000 m, velocity gradient in pipeline 68 to 346 s^-1, and water treatment time 0.13 to 33 h. When pipeline comprises pumps for additionally lifting water, flocculant is introduced before one of them. EFFECT: optimized suspension aggregation process and improved settlement process. 2 cl, 2 tbl