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The integrated domestic sewage treatment equipment adopts the world's most advanced biological treatment technology, which combines the removal of BOD5, COD, and NH3-N. It is currently the most efficient sewage treatment equipment. It is widely used in the treatment of domestic sewage in the high-level guesthouses, villa communities and residential quarters and similar industrial organic wastewater treatment. It replaces the septic tanks that have low removal rates and cannot meet the national comprehensive discharge standard after treatment. The field application shows that the integrated buried sewage treatment equipment is a kind of domestic sewage treatment equipment with excellent treatment effect and convenient management.
WSZ integrated buried sewage treatment equipment working principle:
The integration of buried domestic sewage treatment equipment to remove organic pollutants and ammonia nitrogen mainly depends on the AO biological treatment process in the equipment. Its working principle is in Class A. Due to the high concentration of organic matter in the sewage, the microorganisms are in anoxic state. At this time, the microorganisms are facultative microorganisms. They convert the organic nitrogen in the sewage into NH3-N and use the organic carbon source as the electron. The donor converts NO2-N, NO3-N to N2, and also uses part of the organic carbon source and NH3-N to synthesize new cellular material. Therefore, the A-class pool not only has a certain surface removal function, but also reduces the organic load of the subsequent aerobic tank. It is beneficial to the progress of nitrification, and the denitrification is completed by relying on the higher concentration of organic substances existing in the raw water, and eventually eliminate the eutrophication of nitrogen. In the O-grade, because the concentration of organic matter has been greatly reduced, there is still a certain amount of organic matter and higher NH3-N in the sewage treatment equipment. In order to further oxidize and decompose the organic matter, at the same time, the nitrification can proceed smoothly when the carbonization is completed. An Oxygen Biological Contact Oxidation Cell with a low organic load is set in the O-stage. There are mainly aerobic and auto-oxygen bacteria in the O-grade pool. Among them, aerobic microorganisms decompose organic matters into CO2 and H2O; from oxygen, bacteria use inorganic carbon generated by the decomposition of organic matter or CO2 in the air as a nutrient source, and the NO2-N and NO3- NO-grade effluent from sewage flows into the wastewater. A-level pool. Electron acceptors are provided for Class A pools, which ultimately eliminate nitrogen contamination through denitrification.
WSZ integrated buried sewage treatment equipment application:
★Factory sewage treatment, mine life sewage treatment, *sewage treatment, school canteen sewage treatment, tourist spot sewage treatment, highway service station toll station sewage treatment, scenic area sewage treatment.
★ Hotel sewage treatment, hotel sewage treatment, sanatorium sewage treatment, hospital sewage treatment.
★ Residential community sewage treatment, villa area sewage treatment, business building sewage treatment, new rural sewage treatment, town sewage treatment.
★Sewage treatment at the station, sewage treatment at the airport, sewage treatment at the harbor terminal, and sewage treatment at the shipyard.
★Sewage treatment in aquatic processing plants, sewage treatment in livestock processing plants, sewage treatment in fresh milk processing plants, and production and domestic sewage treatment in various factories.
★ Various industrial sewage treatment similar to domestic sewage.
WSZ Integrated Buried Domestic Sewage Treatment Equipment Features:
1. The equipment is capable of handling life system integrated wastewater and similar organic wastewater.
2. The secondary biological contact oxidation treatment process of the equipment adopts the contact oxidation process and is smaller than the volume of the activated sludge, and has good adaptability to the water quality. The effluent water quality is stable, and no sludge surge will occur.
3, equipment can be buried below the surface, the surface can be used for greening or square land, so the device does not occupy the surface area, without housing, but no heating insulation.
4, a full set of equipment construction is simple, easy to operate, all mechanical equipment are automated control, all equipment and equipment below the surface.
5, the entire processing equipment generally do not need special management, just timely maintenance and maintenance of the equipment.
6, no need to compress the container. Air compressors and circulation pumps and other equipment have greatly reduced investment costs.
7, the required power is low, maintenance and manual operation less.
8. If the equipment is used in cold areas, raise the inspection hole to make the equipment buried below the frozen ground.
9. The integrated buried domestic sewage treatment equipment consists of secondary tanks. The first level is a reinforced concrete structure with a large depth of burial, and the other group is a steel structure with a shallow depth of burial. The steel structure pool adopts the domestic first interpenetrating network anti-corrosion coating for corrosion protection. It is a rubber network and plastic network interpenetrating to form interpenetrating network polymer, which can resist acid, alkali, salt, gasoline, kerosene, anti-aging, abrasion resistance, and can bring rust and rust. After the equipment is generally painted on the paint, the antiseptic life can reach 15 years or more.
WSZ Integrated Buried Domestic Sewage Treatment Equipment Process
1. Grid pool: It is responsible for intercepting the floating cargo in the sewage and ensuring the normal operation of the subsequent treatment equipment.
2. Adjust the pool: to adjust the quality of water, the general adjustment of the pool volume is 6-10 times the amount of processing per hour, lift pump to the anoxic pool.
3. Anoxic tank: The anoxic tank is set for denitrification treatment. The sewage separated by the grid is pumped into the recirculating nitrification liquid mixture in the anoxic tank and the pool through the sewage lifting pump in the regulating tank. Place NZP-II type fillers as a carrier for denitrifying bacteria and have a good removal effect on nitrogen, phosphorus and sulfides. The residence time is 2 hours combined with the sludge pool in the previous process to form an A/O treatment process. Dephosphorization, denitrification purposes.
4. Biological Contact Oxidation Cell: It is divided into two grades. The total biochemical time is 6 hours. The former uses NZP-I type packing. The flow characteristics of the packing are very good. The second grade adopts flow carrier packing (Japanese technology). Specific surface area wood is conducive to the growth of microorganisms. The processing load is up to 30kgBOD/m3•d is more than 7 times that of the general soft packing. The biochemical pool adopts the micro hole explosion in the center corridor, and the sewage continuously circulates in the biochemical pool, fully on the packing. Bio-phase contact to achieve rapid degradation of organic matter.
5. Second settling tank: The biochemical sewage enters the second settling tank. The surface of the second settling tank is designed with a surface load of 0.9-1.2m3/m2•h. The second sink is an adjustable adjustable liquid level. The effluent effect is better, and the sludge in the second settling tank is pumped to the sludge pool.
6. Disinfection tank: According to national standards: TJ14-74 production, disinfection tank residence time is 30 minutes, disinfectant using solid chlorine pills or bleach baifen, or Yuhang sterilizing stone. (only BZHC-C type equipment has a disinfection tank)
7. Sludge pond: The sludge intercepted by the grid and the sludge in the second settling pond all enter the sludge pond. The sludge pond is provided with a sludge digestion system, and the supernatant of the sludge pond is returned to the regulation pond.
8. Fans and power distribution cabinets are installed in the equipment room. Generally two equipment fans are installed in the equipment room to operate alternately. When one fan fails, the other equipment can start automatically and can be continuously operated; when the sewage is cut off, The fan can automatically run off to protect the normal growth of organisms.
The working principle, characteristics and flow of WSZ integrated buried domestic sewage treatment equipment
WSZ Integrated Buried Domestic Sewage Treatment Equipment Overview: