METHOD OF ADJUSTING WATER TREATMENT PROCESSES IN CONTACT CLARIFIERS AND DEVICE TO THIS END Russian patent published in 2013 - IPC C02F1/52 G05D27/00 B01D21/01 

FIELD: process engineering.

SUBSTANCE: set of invention relates to water treatment. Water to be treated is fed into bottom pool 15 of contact clarifier 14. Water flows via distribution system of perforated tubes 17, first, into supporting bed 16 and, then, in filtration bed 18. In motion of treated water from bottom to top, suspension flakes are formed and trapped in filtration bed pores Purified water flows into overflow chute 21 and, therefrom, into top pool 23 and, further, into purified water pipeline 24. Coagulation process in constrained conditions of filtration bed is controlled by adjustment of filtration rate on the basis of proximate analysis in real time of residual coagulant in water and in volume of filtration bed. Switching from filtration to flushing is performed proceeding from proximate analysis of initial water colour, turbidity and alkalinity as well as colour and turbidity at contact clarifier outlet. Time and intensity of flushing are adjusted by sedimentation proximate analysis of suspension at clarifier outlet.

EFFECT: flexible automatic control, reduced amount of residual coagulants in purified water.

2 cl, 1 dwg, 2 tbl, 2 ex