When the dissolved air system is operated, the water level of the equipment can reach about 20-50 mm from the separator of the sludge tank. The water level of the air floatation tank can be adjusted by a water collector. Dissolved air system operation: Close all control valves, turn the electric knob switch to the automatic position and start the pump. At this time, the air compressor also enters the automatic working state, and then open the intake valve, outlet valve and control valve of the lifting water pump sequentially. The pressure of the pressure gauge rises gradually, generally up to 0.4-0.5 MPa.

The dissolved gas system needs to open the control valve of the outlet water of the dissolved gas tank. During operation, the dissolved gas water can be released into the air floatation tank through the releaser. A large number of micro-bubbles appear in the air floatation tank, which makes the water Milky white. The dissolved gas system is normal. The higher the pressure of the dissolved gas, the higher the density of the dissolved gas bubbles released. The gas in the dissolved air system is supplied by an air compressor. As dissolved air and water continuously take away the air in the tank, the air in the tank gradually decreases and the water level rises. When the water level rises to a certain position, the float level gauge will control the work of the air compressor, so that there is enough air in the tank.

After the dissolved air system operates normally, the sewage after the reaction is sent to the air flotation mixing tank. The flow rate is smaller at first, then increases gradually to the rated value. Soluble gas water first uses tap water as backflow water, after normal, it uses treated clear water as backflow water. For example, if the amount of detergent in waste water is large and the foam is large, the effect of air floatation can be affected.

When the dissolved air system shuts down, the sewage control valve should be closed first, then the sewage pump should be closed, the foam is scraped clean, the foam scraper should be stopped, then the clean water valve should be opened, the tap water should be run for 30 minutes, and the control valve of dissolved air outflow water should be closed.www.khnwatertreatment.com