What are the key points for attention when the air flotation machine is just started

Before power on, add quicklime powder or alkali flakes to the sewage tank, and then turn on the air flotation pump to mix it with sewage sufficiently. At this time, the PH value of sewage shall be tested with strong acid and alkali test paper, which shall be 8-9 as far as possible.
After mixing, add polyaluminum chloride again for mixing; And polymerized ferric sulfate, mixed into sewage. The sludge amount of various drugs in the sewage pool is adjusted at any time and anywhere according to the sewage cleaning level and application experience. The basic rule is that the effluent is clear and transparent.
Then open the main switch of the air flotation electric control box to check whether all electrical components are normal; The lubrication condition of each mixing motor and pump shall be added with appropriate lubricating grease according to the specific situation. When all preparations have been made, the air flotation machine will be turned on.
The opening sequence is from high-pressure pump to inlet and outlet. After the high-pressure pump is working normally, gradually close the inlet and outlet valves and pay attention to the barometer at any time and anywhere. After several cycles of air flotation, it is not necessary to adjust the air flotation valve, just open the high-pressure pump.
After the high-voltage centrifugal pump is started, everything should work normally for a period of time. When there is milky white liquid in the flotation tank, turn on the sewage pump, turn on the polyaluminum chloride and polyferric sulfate pumps, and then turn on the motor power switch of the mechanical equipment filter tank. The water obtained through the air flotation machine slowly enters the purification tank.