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Municipal life wastewater treatment system with high efficiency and low energy consumption

A technology for treating system and domestic sewage, which is applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc. Maintenance and management of operating costs, increasing the complexity of the treatment process, etc., to achieve a significant effect of denitrification and phosphorus removal, improve the removal rate of pollutants, and achieve a good effect of solid-liquid separation

Active Publication Date: 2012-11-14
陈秋竹
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Problems solved by technology

[0009] The above measures cannot effectively and thoroughly solve the technical problems of urban sewage treatment plants, but instead increase the complexity of the treatment process and increase the maintenance and management operating costs

Method used

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  • Municipal life wastewater treatment system with high efficiency and low energy consumption

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Embodiment

[0100] The sewage treatment scale is 3,500 tons / day (175 tons / hour), and the total operating electricity fee is 522.20 yuan (unit price: 0.7 yuan / kw.h). 5.5, two sets running, running time 20 hours; circulation lift pump (QW type non-clogging submersible sewage pump) model is 200QW300-7-11, two sets running, running time 12 hours; fan (BK7011), speed 1400rpm, power 30kw , one running, running time 8 hours; one mechanical grid power 1.1kw, running 20 hours; total power consumption 746kw.h / day (lift pump 220kw.h / day, circulation lift pump 264kw.h / day, Fan 240kw.h / day, mechanical grill 22kw.h / day).

[0101] The electrical control system is simple, with two people on duty, and the total direct cost of operation is 0.206 yuan / ton·sewage.

[0102] The quality of urban domestic sewage treated is as follows: chemical oxygen demand (COD) 398-511mg / L (average 400mg / L), biochemical oxygen demand (BOD 5 ) 190~220mg / L (average value is 209mg / L), suspended solids (SS) 198~250mg / L (average...

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Abstract

The invention relates to a municipal life wastewater treatment system with high efficiency and low energy consumption. The system comprises a reinforcement pretreatment part, a jet-type aeration biological filter part and a composite-type biological contact oxidation pond part. Multistage oxygen deficiency treatment, anaerobic treatment, aerobic treatment, sedimentation and filtration are adopted, reinforcement pretreatment and partial oxygen deficiency-anaerobic treatment are carried out on the wastewater, most organic pollutant can be removed and degraded, and the biodegradability of the wastewater is improved, partial aerobic treatment, oxygen deficiency treatment, anaerobic treatment, sedimentation and filtration treatment are carried out on the jet-type aeration biological filter pond, a great amount of organic pollutant, ammonia nitrogen and phosphate is removed, partial aerobic treatment, oxygen deficiency treatment, anaerobic treatment, sedimentation and filtration treatment are carried out on the composite-type biological contact oxidation pond, partial organic pollutant remained in the wastewater is removed and degraded, so that the pollutant removing rate of the domestic wastewater is improved. The system is small in occupied area, low in investment, low in operation cost and convenient in maintenance and management, and reaches the standard A of Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002).

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an urban domestic sewage treatment system with high efficiency and low energy consumption. Background technique [0002] The Ministry of Housing and Urban-Rural Development of the People's Republic of China compiled technical guidelines for rural domestic sewage treatment in Northeast China, North China, Southeast China, Central South China, Southwest China, Northwest China and other regions (trial implementation), and promulgated the "Regarding the Printing and Distribution of Rural Domestic Sewage in Sub-regions" on September 21, 2010. "Notice on Handling Technical Guidelines" (Jiancun [2010] No. 149) document. The technology guide selects Northeast technologies for different regions: septic tanks, anaerobic biofilm tanks, biological contact oxidation tanks, land infiltration, artificial wetlands, stabilization ponds; North China technologies: septic tanks, sewage purifi...

Claims

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Application Information

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IPC IPC(8): C02F9/14
Inventor 陈秋竹崔天王明芳陈思宇杨李强
Owner 陈秋竹
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