Integrated urban waste water treating apparatus and process

Abstract

The invention discloses equipment of processing incorporate urban sewage and its technics. The equipment is made of armor plate. It includes internal electrolysis reaction area, machine-adding mixing system, helix flocculation depressed area and biolobical reaction area. Sewage can reach GB8978-1996 discharging standard through internal electrolysis reaction, flocculating settling (to remove phosphor), aerobic biological reaction, anaerobic reaction and filtration. Adopting incorporate treatment technics, the invention has a little floor space, low investment and a good effect. It adapts to urban subzones, blocks in villages and towns and micromidi companies such as urban diet, food processing and abattoir.

Description

technical field [0001] The invention relates to an urban wastewater treatment device and process, in particular to a treatment process device for high-concentration urban catering industry sewage, slaughtering and food processing industry wastewater. technical background [0002] At present, for the treatment of urban wastewater, especially high-concentration urban sewage such as catering industry, food processing industry, slaughtering industry and other sewage, most of them adopt traditional activated sludge process such as anaerobic and aerobic technology and the derived oxidation ditch, AB method and SBR method. However, this type of process has a large area, high equipment investment and operating costs, long treatment time, and unstable effluent quality. It is difficult for small and medium-sized enterprises such as urban living quarters and urban catering, food processing, and slaughtering to accept. , the BAF biological aerated filter process introduced from abroad i...

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Problems solved by technology

[0002] At present, for the treatment of urban wastewater, especially high-concentration urban sewage such as catering industry, food processing industry, slaughtering industry and other sewage, most of them adopt traditional activated sludge process such as anaerobic and aerobic technology and the derived oxidation ditch, AB method and SBR method. However, this type of process has a large area, high equipment investment and operating costs, long treatment time, and unstable effluent quality. It is difficult for small and medium-sized enterprises such as urban living quarters and urban catering, food processing, and slaughtering to accept. , the BAF biological aerated filter process introduced from abroad in recent years has the advantages of large volume load, high biomass, good treatment effect, small footprint, relatively low investment and operating costs, etc., but due to the characteristics of the BAF process , the whole filter is in the state of aeration, and the reproduction of anaerobic denitrifying bacteria is inhibited. Although anaerobic environment also exists in the deep layer of aerobic biofilm, the denitrification and denitrification effect of this tiny anaerobic environment Therefore, it is difficult to completely carry out the denitrification and denitrification process in the conventional BAF biological aerated filter, which directly affects the removal of total nitrogen in the wastewater. It is necessary to make the BAF process achieve the removal of organic pollutants and at the same time For the purpose of nitrogen, it is necessary to add another set of biological aerated filter for nitrogen removal, which invisibly increases the area of ​​equipment and facilities, increases investment, and makes the BAF process lose its competitive advantage, and most of the BAF process uses a single-layer filter. Structure, poor physical pollution interception ability, easy clogging of the filter layer, frequent recoil, short operating cycle, etc.

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