Sewage treatment device

Abstract

The invention relates to the field of water treatment in environmental engineering, in particular to a sewage treatment device. The sewage treatment device is characterized by comprising an accommodating cavity body, a total optical fiber bundle, film separation cavities, splitting optical fiber bundles, aeration disks, a lower liquid level sensor, a plant growing environmental factor sensor, an upper liquid level sensor, an air pump and ventilating pipeline, and a water outlet pump and water outlet pipeline, wherein the film separation cavities are independent accommodating cavities, and are formed in the accommodating cavity body; the splitting optical fiber bundles, the aeration disks and the plant growing environmental factor sensor are separately arranged in the film separation cavities; the lower liquid level sensor and the upper liquid level sensor are arranged in the accommodating cavity body. Through the adoption of the scheme of the sewage treatment device disclosed by the invention, defects of conventional distributed sewage treatment devices are overcome, and the provided novel sewage treatment device has the advantages that not only is effluent water high in quality, but also nitrogen and phosphorus can be utilized in a recycling manner, the operating cost is reduced, and the stabilization of recovering biomass is guaranteed.

Description

technical field [0001] The invention relates to the field of environmental engineering water treatment, in particular to a sewage treatment device. technical background [0002] At present, in cities, sewage treatment is usually collected by the pipe network and entered into the urban sewage treatment plant, and then treated by biological methods such as activated sludge or biofilm, which mainly focus on aerobic microorganisms. Although this treatment mode has It has the advantages of stability and high efficiency, but at the same time, there are also problems such as high cost of pipeline network construction and operation, power and energy consumption for aeration, difficulty in processing excess sludge, and difficulty in recycling nitrogen and phosphorus resources, which need to be improved. For decentralized sewage treatment in rural areas, small towns, green communities, and green buildings, small-scale biological sewage treatment devices such as activated sludge method...

AI Technical Summary

Problems solved by technology

However, for the aquatic plant-bacteria coupling reaction system currently used for sewage treatment, the sewage, aquatic plants and bacteria are mixed together, which brings significant disadvantages: 1. Suspended substances such as organic particles and inorganic particles in the sewage hinder The conduction of light in the system, such as sunlight and artificial light in water, the above-mentioned suspended matter will cause light reflection, refraction or absorption of light, even if artificial light is added to the system, sticky suspended matter and bacteria It will accumulate on the surface of the artificial light source and block the transmission of light. Therefore, the setting mode of the traditional aquatic plant-bacteria protozoa coupling reaction system greatly reduces the transmission efficiency of the light source and reduces the processing efficiency of the system; 2. Algae, aquatic The mixed growth of plants and bacteria-protozoa will lead to the ingestion of bacteria and protozoa on algae and the reproduction of other miscellaneous algae, resulting in the demise of algae with specific functions, and it is difficult to guarantee the purity of species. It is more difficult, it is difficult to obtain high-purity biomass, and its recovery economic value is low; 3. For the algae-bacteria mixed symbiosis system without membrane filtration, the suspended growth of algae and the bacteria and particles attached to it in the discharged effluent etc. are difficult to settle, which makes it difficult to guarantee the quality of the effluent water. However, the mixed symbiosis system of algae and bacteria with membrane filtration adopts the material flow mode of one-way dead-end filtration, which makes the membrane module easy to block and the operating cost is too high.

For example, the invention devices with patent publication numbers CN101104539A and CN101885534A have no effective means to solve the above three shortcomings, resulting in low sewage treatment efficiency and high operating costs in the system operation

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