Shallow air flotation in the process of operation, check whether the air filter valve has been frozen, to see if the air flotation function can not operate normally, there is no noise and heat phenomenon, if there are problems to be dealt with in time. Clean and fill the air floatation tank of the air floater, flush the pipeline, check whether the pipeline and valve are leaking.

The raw water of shallow air flotation enters its mixing reactor, and additives (deoiling agent or coagulant) are added to the mixing reactor to form separable flocculants. The pretreated sewage enters the air flotation device, and the micro bubbles released from the sewage and air-water mixture in the intake chamber (bubble diameter range 30-50um) are mixed. These tiny bubbles adhere to flocs in sewage to form an air float with less specific gravity than water. The air float rises to the water surface and condenses to form oil slick (or scum) and scrapes through the oil scraper (residue) to the oil (residue) receipt trough.

Shallow air floatation deposits heavier solid particles in the intake chamber, which are discharged through the sand discharge valve. The system requires regular opening of the sand discharge valve to keep the intake chamber clean. Sewage enters the water distribution area of the air floatation device. Rapidly rising particles will float to the water surface; slowly rising particles will be separated in the corrugated slab. Once a particle touches the corrugated slab, it can reverse under the action of buoyancy. The flow direction rises.www.khnwatertreatment.com