High-efficiency jet aeration rotational flow type active sludge sewage treatment system

Abstract

The invention relates to a high-efficiency jet aeration rotational flow type active sludge sewage treatment system, which comprises an active sludge reactor and a jet aerator, wherein the jet aerator is provided with a jet pipe, an air inlet pipe and a water inlet pipe, the outlet of the jet pipe is connected with the inlet of the active sludge reactor, a water flow passage in the active sludge reactor is provided with a fixed packed bed, the fixed packed bed is provided with a packing layer, the front part of the jet aerator is connected with a primary sedimentation tank, and the rear part of the active sludge reactor is connected with a secondary sedimentation tank, a filter tank and a water storage tank in turn. By adopting the jet aerator with high aeration efficiency to perform aeration, introducing the sewage after the aeration into the active sludge reactor, and passing the sewage in the active sludge reactor through the packing layer so that the sewage contacts microorganisms attached to packing materials and is decomposed into harmless or basically harmless inorganic matters and water by the microorganisms, the high-efficiency jet aeration rotational flow type active sludge sewage treatment system achieves the aim of sewage purification, has low power consumption required by the aeration, and is advantageous for saving energy sources and reducing the running cost.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a high-efficiency jet aeration swirling activated sludge sewage treatment system, which can be mainly used for purification treatment of domestic sewage and belongs to the field of environmental protection. Background technique [0002] Since 1804, the British first used sedimentation and filtration technology as a centralized water treatment plant. In 1884, the Americans invented the coagulation, sedimentation, filtration, and chlorine disinfection technology, which has been used for 120 years. There are new discoveries and improvements in treatment. With the improvement of living standards and the increase of population density, the treatment of sewage has also been developed. The purpose is to basically eliminate pollutants in the water before being discharged into natural water bodies, so that In order to achieve a certain degree of purification and avoid adverse effects on water ...

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Problems solved by technology

[0002] Since 1804, the British first used sedimentation and filtration technology as a centralized water treatment plant. In 1884, the Americans invented the coagulation, sedimentation, filtration, and chlorine disinfection technology, which has been used for 120 years. There are new discoveries and improvements in treatment. With the improvement of living standards and the increase of population density, the treatment of sewage has also been developed. The purpose is to basically eliminate pollutants in the water before being discharged into natural water bodies, so that In order to achieve a certain degree of purification and avoid adverse effects on water bodies and other environmental factors, these treatment methods basically use relatively low-cost biochemical reaction treatments, and establish other microbial groups through anaerobic and aerobic microorganisms. It is suitable for the growth and reproduction conditions of the required microbial groups, and the organic matter and other pollutants are degraded by microorganisms to form harmless or basically harmless inorganic matter. These biochemical technologies have achieved the purpose of sewage treatment in their own suitable occasions. For example, the activated sludge method based on aerobic biochemistry can be used to treat large-scale sewage, achieve a high degree of purification, and reach water that meets the discharge standards. The aeration device is an aeration head installed at the bottom of the water. Aeration is realized by connecting high-pressure air. The disadvantage of this technology is that the aeration effect is not ideal, and the second is that the aeration pressure is small, which limits the water depth of the reaction device, thereby limiting the processing capacity per unit area and limiting The process of mixing and settling limits the concentration of activated sludge

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