Domestic sewage in villages and towns Water treatment equipment small-scale
New domestic wastewater treatment equipment for villages and towns - main design parameters
Regulating tank: WSZ-AO series regulating time is 8 hours.
Primary sedimentation tank: WSZ-AO series primary sedimentation tank is a horizontal sedimentation tank, with surface load of 1.5m3/m2.hr.
Grade A biological tank: WSZ-AO series Grade A biological tank is a push flow anaerobic biochemical tank, and the retention time of sewage in the tank is 3 hours, filler It is an elastic three-dimensional filler with a specific surface area of 200m2/m3.
Level O biological tank: WSZ-AO series 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: WSZ-AO series secondary sedimentation tank is a swirling sedimentation tank with surface load of 1.0m3/m2.hr and sedimentation time of 2.1h.
Disinfection tank: WSZ-AO series disinfection tank is a rotational flow reaction tank. 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 WSZ-AO series sludge tank can be pumped from the access hole to the bottom of the sludge tank by a septic truck and then transported outside.
Small domestic sewage treatment equipment in villages and towns Product features
1. Buried below the ground, the ground above the equipment can be used as greening or other For land use, there is no need for building houses, heating and insulation.
2. The two-stage biological contact oxidation process adopts the plug flow biological contact oxidation process, and its treatment effect is better than the fully mixed or two-stage series 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.
Biological contact oxidation method is adopted for biochemical tank. The volume load of its filler is relatively low, and the microorganism is in its own oxidation stage, so the sludge production is small. It only takes more than three months (90 days) to discharge the sludge (pumped or dehydrated into mud cake and transported out).
4. The underground domestic sewage treatment equipment is provided with soil deodorization measures in addition to conventional high altitude exhaust.
5. The whole equipment processing system is equipped with a fully automatic electrical control system and an equipment fault alarm system, which is safe and reliable in operation. Usually, there is no need for special personnel to manage the equipment, but only the timely maintenance of the equipment.
Small domestic sewage treatment equipment in villages and towns First, the sewage is pretreated by intercepting it with a mechanical grid, so as to preliminarily determine the content of inorganic particles, the identity and biodegradability of sewage; Then through hypoxia and aerobic A/O The biological oxidation method uses the function of biofilm to first convert organic pollutants into ammonia nitrogen, and at the same time, both organics and ammonia nitrogen are removed through aerobic nitrification and anoxic denitrification. The biochemical tank is equipped with a new type of high-density elastic three-dimensional filler, which has the advantages of high load, simple construction, small size, reliable operation, convenience and easy replacement; The biochemical tank enters the horizontal flow sedimentation tank for solid-liquid separation. The horizontal flow sedimentation tank is characterized by good solid-liquid separation effect, low investment, strong adaptability to impact load and temperature change, and simple construction; The horizontal flow sedimentation tank enters the tank for treatment, which can ensure that the indicators of the treated sewage reach the standard.
Small domestic sewage treatment equipment in villages and towns "The purpose of the activity is to further awaken the awareness of biodiversity conservation in the whole society, firmly establish the concept of respecting nature, conforming to nature and protecting nature, and build a beautiful home where people and nature coexist in harmony." Zheng Zhijie, director of Quanzhou Jinjiang Ecological Environment Bureau, said that he expected to vigorously promote the in-depth development of ecological environment protection in Jinjiang through extensive publicity, To arouse more forces to participate in ecological environment protection, continue to fight the battle of "blue sky", "blue water", "blue sea" and "pure land", and continue to plant the ecological background of Jinjiang River.
