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Residents of the living community discharge a large amount of domestic sewage in the process of life, and if it is not treated in time, it will cause pollution to the surrounding environment.
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Community domestic sewage treatment equipment adopts mature "A/O biological contact oxidation" process, the treatment process is relatively simple, easy to operate, low daily costs, stable water output, the main equipment is steel structure, considering the surrounding environment of the community and the small area, generally use buried type also known as buried domestic sewage treatment equipment.
First, the process flow explanation
1. Inlet well: overflow and inlet gate are set up in the inlet well, and when the incoming water exceeds the system load or an accident occurs in the treatment system, the inlet gate is closed, and the sewage is directly discharged into the river or municipal pipe network through the overflow outlet.
Community domestic sewage treatment equipment
2. Grille: sewage often contains a large number of debris, in order to ensure the normal operation of the MBR system, it is necessary to intercept all kinds of fibers, residue, waste paper and other debris outside the system, so set up a grid in front of the system and clean up the grid slag regularly.
3. Regulating pool: the amount of sewage collected and the quality of the water change with time, in order to ensure the normal operation of the subsequent treatment system and reduce the operating load, it is necessary to adjust the amount of water and water quality of the sewage, so the regulating pool is designed before entering the biological treatment system. The conditioning tank requires regular cleaning of the sediment. The regulating pool is generally set with overflow to ensure the normal operation of the system in the case of excessive load.
4. Hypoxic pool: its function is to decompose macromolecular substances into small molecules of easily decomposable substances, and improve the B/C ratio of wastewater. In addition, denitrification can also achieve nitrogen removal effect.
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5. MBR reaction tank: the unique structure of immersion plate membrane bioreactor, which is set in the aeration tank, after aerobic aeration and biological treatment of the water filtered by the filter membrane (pore size 0.1um) can be directly discharged or reused after being pumped out by the pump. Because its effluent is not affected by sludge settlement conditions, it can keep the pool under the condition of high volumetric load and long mud age, which greatly improves the process conditions of biological oxidation, improves the degradation efficiency of organic matter, and eliminates the need for secondary sedimentation tanks to achieve excellent and stable effluent effects.
6. Disinfection device: according to the requirements of the effluent, the system is designed with a disinfection device, generally using ultraviolet sterilization method that is easy to clean, and disinfectant dosing method can also be selected.
7. Metering device: In order to ensure that the system runs well, a certain metering device needs to be used for system parameter control. Metering and control instruments include flow meters and pressure gauges.
8. Electronic control device: the electric control box is installed in the equipment room. It mainly controls the inlet pump, fan and suction pump. There are two forms of control: manual control and automatic control. Under the control of PLC, the inlet pump runs automatically according to the water level of each reaction tank. The suction pump runs intermittently according to a preset time cycle, and when the MBR reactor tank is low in water, the suction pump automatically stops to protect the membrane module.
Community domestic sewage treatment equipment
Second, the selection requirements of domestic sewage treatment equipment in the community
1. Water quality treatment requirements: according to the requirements of the amount of influent water, water quality characteristics and effluent discharge specifications, select sewage treatment equipment with reliable process operation, high efficiency, simple operation, less protection and repair workload, and moderate price to ensure that the effluent reaches the specification.
2. Choose from the material: At present, the market is mainly based on stainless steel, fiberglass, cast iron, aluminum, food-grade resin or PVC and other materials. According to the characteristics of the sewage, choose whether to consider the anti-corrosion problem.
3. Equipment process parameter selection: The matching of equipment and production process parameters with its supporting equipment and production process parameters in the production process should be fully considered. Constraints on local natural resources, overhaul tools, repair levels, government policies, transport conditions, availability of spare parts, etc. are also taken into account.
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Third, the advantages of domestic sewage treatment equipment in the community
(1) High efficiency: 24 hours of uninterrupted work
(2) Low maintenance cost: There are no other rotating parts except the packing during its operation, so the failure rate is low and the maintenance cost is saved.
(3) Low one-time investment: the filter has coagulation and clarification effects, so there is no need to build additional coagulation tanks, clarification tanks and other facilities, the process volume is small, and the one-time investment is saved.
(4) Stable effluent quality and good filtration effect: it can ensure high quality and stable effluent effect, and there is no periodic water quality fluctuation.
Community domestic sewage treatment equipment
(5) Easy to modify and expand: The operation mode of the unit can flexibly increase or delete the number of filters according to the change of water volume, which is easy to modify and expand
(6) Small footprint, beautiful appearance: the use of filter can integrate the traditional three-stage (coagulation, clarification, filtration) treatment process into one, saving about 70% of the floor space; The appearance can be designed into a variety of shapes according to requirements, spraying colors, beautiful and compact.
Integrated sewage treatment equipment-rural sewage treatment equipment manufacturer-Shandong Mengzhi Clean Water Treatment Equipment Co., Ltd