Introduction to domestic sewage treatment plant

Domestic sewage treatment plant is a facility that integrates the functions of anoxic tank, anaerobic tank, aerobic tank, sedimentation tank, sludge tank and disinfection tank. Designed specifically for residential communities, small and medium-sized enterprises or rural areas, its purpose is to treat and purify wastewater generated by daily life. These treatment plants effectively remove suspended matter, organic matter and pathogenic microorganisms from sewage through key steps such as pre-treatment, biological treatment, sedimentation and disinfection, ensuring that the effluent meets environmental standards.

Domestic sewage treatment plant composition

A domestic sewage treatment plant consists of a number of different components and treatment units. It mainly includes grid regulating cell unit, A2O unit, BAF unit and UV disinfection unit. Among them, the grid regulating tank is responsible for the initial treatment and balance of water quality; The A2O unit removes pollutants through biological reactions under different conditions. BAF unit for further filtration; The UV disinfection unit is responsible for the final sterilization. In addition, there are air floats, centrifuges, aerators and other equipment, as well as various reactors and dosing systems, which work together to treat sewage efficiently.

Characteristics of domestic sewage treatment plant

Features of domestic sewage treatment plants include:
1. Small size, strong adaptability, good impact load resistance, stable output of high quality water. Use of new materials to improve microbial treatment efficiency and oxygen solubility.
2. Equipped with automatic control system and fault alarm system, safe and reliable operation. No daily management is required, only regular maintenance is required.
3. The structure can be designed as above ground or buried, which can save space and the ground can be used for greening.

Domestic sewage treatment plants are important infrastructure for modern urban and rural environmental protection, they not only provide effective water quality management solutions, but also contribute to the sustainable use of water resources.

The sewage treatment plant (STP) uses the "A2O+BAF+UV+sterilization" process.

The A2O process, which stands the English stands for anameric anoxic oxic, is done to destroy nitrogen and destroy phosphate by the use of hydrophilic creatures-oxygen-deficient. In the A2O, BOD5, SS and nitrogen and phosphate process in various forms will be removed one by one. In the hydrophobicity and oxygen shortage segments, the plant system is mainly composed of nitrifying bacteria and polyphospourus, and in the iceelement, the phytochemicals are mainly composed of nitrifying bacteria and polyphosporus.

BAF means aerated biological filter tank is the biofilm treatment process that coexist with solid three-phase, liquid and gas, belongs to the technology of sewage biotreatment combined with oxidation and contact purification, Its core technology is the application of foam purification material and the use it as a biological carrier for waste water treatment. A cloth water system set on the top of the BAF tank, it can evenly distributes waste water to the surface of filtration materials, so that drip water can be fully contact with oxygen. Micro-creatures on the surface of the filter material by deforming-and then re-sticking, finally formed a stable biological membrane, will not proceed with an explanation. Because of the pant and oxygen shortage caused in the membrane, there is high operation, the softener can successfully remove the contaminants once it melts through the biological membrane.

Ultraviolet sterilization is through ultraviolet light radiation, destroy and change the DNA structure of the bacteria (deoxyride acid), make bacteria die immediately or unable to produce children, in order to achieve the purpose of germicidal bacteria.

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