Principle of on-line self-cleaning filter for industrial water treatment and forced backwashing
wash wash is put into operation before the preparation work is mainly to restore contact filter filtration and depth filtration effect, to ensure the water quality of medium SDI (pollution index) = 4.
) air scrubbing, backwashing, air cleaning, the purpose is to attach to the filter on the dirt stripping, strengthening backwash effect. Specific operation method is: after backwashing, close the water inlet valve, open the drainage to the bottom as a top, is 10 centimeters on the anthracite filter material, close the bottom row, open the blower and the air inlet valve, inlet control strength, specific criteria for the fancy mirror anthracite coal bed was suspended state moves up and down, can't let the filter violently up and down to avoid disorderly phenomeno
And observe the anti washout nozzle whether there is anthracite run out, no anthracite run out as standard, backwashing 15 minutes
Filter backwash water inlet and outlet outage, cut off valve, open the discharge valve and air backwash discharge valve, open the backwashing water pump, slowly open the backwashing inlet valve, adjust the backwashing flow to normal backwashing flow of about 200 m3/h
