Small rural domestic sewage treatment equipment purification tank device
characteristic
The integrated sewage treatment equipment can be buried below the surface, and the surface can be used for greening or plaza. Therefore, the equipment does not occupy the surface area, does not need to build a house, and does not need heating and insulation.
Integrated sewage treatment can be made of reinforced concrete structure or steel structure, or glass fiber reinforced plastic.
The AO biological treatment process in the integrated sewage treatment equipment adopts the plug flow biological contact oxidation tank, which is superior to the fully mixed or two-stage and three-stage series fully mixed biological contact oxidation tank. Moreover, it is smaller than the activated sludge tank, has strong adaptability to water quality, good impact resistance, stable effluent quality, and will not produce sludge bulking. At the same time, a new type of elastic solid filler is used in the biological contact oxidation tank, which has a large actual specific surface area, and is convenient for microorganisms to form and remove films. Under the same organic load conditions, it has a higher removal rate of organic matter than other fillers, and can improve the solubility of oxygen in air in water.
Since the biological contact oxidation tank is used in the AO biological treatment process, the volume load of the filler is relatively low, and the microorganism is in its own oxidation stage, so the sludge production is less. In addition, the moisture content of sludge produced by biological contact oxidation tank is far lower than that of sludge produced by activated sludge tank. Therefore, the amount of sludge generated by the integrated sewage treatment equipment is less.
The integrated sewage treatment equipment is equipped with full-automatic electrical control system and equipment damage alarm system, and the equipment is reliable. Therefore, there is no need for special personnel to manage it at ordinary times, only monthly and quarterly maintenance is required.
Small rural domestic sewage treatment equipment purification tank device Main design parameters
Regulating tank: the regulating time is 8 hours.
Primary sedimentation tank: the primary sedimentation tank is a flat sedimentation tank with a surface load of 1.5m3/m2.hr.
Level A biological tank: Level A biological tank is a push flow anaerobic biochemical tank, the retention time of sewage in the tank is 3 hours, the filler is elastic three-dimensional filler, and the specific surface area of filler is 200m2/m3.
Level O biological tank: the level O biological tank is a push biological contact oxidation tank, the retention time of sewage in the tank is 5-6 hours, the filler is elastic three-dimensional filler, and the specific surface area of the filler is 200m2/m3.
Secondary sedimentation tank: the secondary sedimentation tank is a swirling sedimentation tank with a surface load of 1.0m3/m2.hr and a sedimentation time of 2.1 hours.
Disinfection tank: the disinfection tank is a whirling reaction tank, and the total retention time of sewage in the tank is about 300 minutes, and the hospital sewage is more than 1 hour.
Sludge tank: The sludge in the sludge tank can be pumped from the inlet to the bottom of the sludge tank by a septic truck and then transported outside.
