Backwash water recycling system

Details Backwash water recycling system Backwash water recycling system

1978-09-19

1980-05-13

Cuchlinski, Jr, William A.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

210 82, 210205, 210411, B01D 2324

Patent

active

042027683

ABSTRACT:
A process and apparatus for the treatment of the aqueous backwash effluent resulting from a backwashing operation of an industrial filter. During the backwashing operation, particulate matter and solids are dislodged from the industrial filter so as to be entrained in the backwash effluent, and the effluent is passed through a backwash filter to remove these materials. After passing through the backwash filter, the normally water-based backwash solution is directed to a holding tank for storage until a subsequent backwashing operation is required. The pH value and chlorination level of the backwash solution are periodically adjusted to maintain them within selected ranges in order to optimize the sanitizing effect of the solution during the backwashing operation. The process and apparatus results in the consumption of a much smaller quantity of water than prior arrangements wherein a singleuse backwash solution is dumped into the general effluent discharge of the plant.

REFERENCES:
patent: 2322428 (1943-06-01), Eickemeyer
patent: 2596392 (1952-05-01), Fessler
patent: 3679052 (1972-07-01), Asper
patent: 3994803 (1976-11-01), Neff et al.
patent: 4028241 (1977-06-01), Davis et al.

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