Newly built integrated domestic sewage treatment equipment and facilities in rural areas
Main process description:
After the sewage is collected by the drainage system, it enters the septic tank of the sewage treatment station for anaerobic decomposition of feces and macromolecular organics, and then enters the regulating tank for homogenization. The regulating tank is equipped with a liquid level controller, which transmits signals through the liquid level controller, and is pumped by a lift pump to the anaerobic tank of the integrated equipment. After aerobic treatment, it flows into the disinfection tank for disinfection, Disinfection water is directly discharged into the municipal pipe network.
The sundries intercepted by the grating are regularly loaded into the trolley and dumped to the garbage dump. The sludge in the integrated sedimentation tank is discharged into the septic tank for sludge digestion and then pumped out regularly. The supernatant of the sludge tank returns to the regulating tank for further treatment.
Newly built integrated domestic sewage treatment equipment and facilities in rural areas Process principle:
A/O process is a kind of wastewater biological treatment method derived from the biofilm method, that is, a certain amount of fillers are filled in the biological contact oxidation tank, and the organics in the wastewater are oxidized and decomposed through biological oxidation by using the biofilm perched on the filler and the oxygen fully supplied, so as to achieve the purification purpose.
Equipment design features:
1. MJC domestic sewage treatment series equipment is buried below the ground. The ground above the equipment can be used for greening or other purposes, without building houses, heating and insulation.
2. All A/O biological treatment processes adopt plug flow biological contact oxidation, and its treatment effect is better than that of fully mixed or two-stage and three-stage tandem fully mixed biological contact oxidation tank. It is smaller than the activated sludge tank, has strong adaptability to water quality, good shock load resistance, stable effluent quality, and will not produce sludge bulking. New elastic three-dimensional filler is used in the tank, which has a large specific surface area and is easy for microorganisms to hang and remove the membrane. Under the same organic load conditions, the organic matter removal rate is high, which can improve the solubility of oxygen in the air in water.
3. The A/O tank adopts biological contact oxidation, and the volume load of the filler is relatively low. The microorganism is in its own oxidation stage, and the sludge production is small. It only takes more than three months (90 days) to discharge the sludge (pumped by a manure truck).
4. In addition to conventional noise elimination measures (such as vibration isolation pads and * * *), the blower used in this equipment is equipped with * * * devices at the entrance of the room, so that the noise of the equipment during operation is less than 50db (decibel) of A sound level, which meets the requirements of a quiet community and has no impact on the surrounding environment.
5. The deodorization method of the buried domestic sewage treatment equipment is not only conventional high altitude exhaust, but also soil removal measures.
6. The whole equipment processing system is equipped with a fully automatic electrical control system and equipment failure alarm system, which is safe and reliable in operation. At ordinary times, people do not need to assign special personnel to manage, but only need to timely maintain and maintain the equipment.
Newly built integrated domestic sewage treatment equipment and facilities in rural areas According to the evaluation of the improvement and treatment of rural domestic sewage, the counties (cities, districts) with good governance tasks, stable overall operation of facilities, and innovative practices will be rewarded in different grades, with the reward standards of 8 million yuan, 5 million yuan, and 3 million yuan respectively. The award and subsidy funds are mainly used for the construction of rural domestic sewage pipe network, village centralized domestic sewage treatment facilities and resource utilization facilities.
