Operation method of buried domestic sewage treatment equipment


1. The installation and commissioning personnel shall first open the inlet valve and outlet valve, start the equipment inlet lift pump, and then transfer the sewage from the regulating tank to the local domestic sewage treatment equipment.
2. For the equipment used and debugged for the first time, when the water level reaches one-half of the height of the equipment, stop the water pump from feeding water, open the fan inlet valve, start the fan, slowly open the fan outlet valve, aerate in the contact oxygen tank for 48 hours, then start the water inlet lifting pump to add sewage to three-quarters of the equipment, and aerate in the tank for 24 hours.
3. The staff should touch the seasoning with their hands to see if it feels sticky, and observe the growth of microorganisms in the water until biofilm grows, then they can continue to deliver sewage to the equipment, and the water volume should be gradually increased to the design water volume.
4. Regularly observe the growth of microorganisms in the water, and timely control the influent volume for adjustment in case of abnormalities.
5. To observe the water flow pattern of the secondary sedimentation tank, the water collection of the outlet weir must be uniform. Generally, the sludge must be discharged every 24 hours. When discharging the sludge, open the sludge discharge solenoid valve and lift the sludge in the secondary sedimentation tank to the sludge tank by air lift.
6. The buried sewage treatment equipment adds disinfectant into the disinfection tank as needed. The water from the secondary sedimentation tank is partially dissolved in the disinfectant dosing tank to achieve the purpose of disinfection. After the treated water stays in the clean water tank and meets the discharge requirements, it can be discharged again.
7. The effluent quality shall be tested irregularly to ensure the normal operation of the equipment.