Underground sewage treatment equipmentOperation process:
1. The debugging personnel first need to open the inlet valve and outlet valve, start the equipment's inlet lifting pump, and send the sewage from the conditioning tank to the buried sewage treatment equipment.
2. For equipment that is being used and debugged for the first time, when the water level reaches 1/2 of the height of the equipment, stop the water pump from entering, open the inlet valve of the fan, turn on the fan, slowly open the outlet valve of the fan, and aerate the contact oxidation tank for 48 hours before starting the water inlet lifting pump to add sewage to 3/4 of the equipment, and then aerate the tank for 24 hours.

3. Touch the filling material with your hand to see if it feels sticky, and observe the growth of microorganisms in the water until a layer of orange yellow biofilm grows on the filling material. Only then can sewage be continuously supplied to the equipment, and the water volume should gradually increase to the design water volume.
4. Regularly check the growth status of microorganisms in the water, and if any abnormalities are found, promptly control the inflow amount and adjust it.
5. To observe the flow state of the secondary sedimentation tank, the water collected by the outlet weir must be evenly distributed, usually every 24 hours
It is necessary to discharge the sludge once. When discharging, open the sludge discharge solenoid valve and use air lift to lift the sludge in the secondary sedimentation tank of the buried sewage treatment equipment to the sludge tank.

6. The buried integrated sewage treatment equipment adds disinfectant in the disinfection tank according to the demand. The water from the secondary sedimentation tank passes through the disinfectant dosing tank, and the agent is locally dissolved to achieve the purpose of disinfection. After the treated water stays in the clean water tank for about 0.5 hours, it reaches the discharge request and can be discharged into the external water body.
7. After the equipment is debugged and running normally, the system can enter automatic operation. Switch the operation of the water pump and fan to automatic mode on site, as the electrical control cabinet is an application
The PLC automatic control program has been programmed before the equipment leaves the factory, and there is no need to set it separately during operation.
8. Users should periodically stop testing the effluent quality in accordance with environmental discharge requirements to ensure the normal operation of buried sewage treatment equipment.