Nitrification/denitrification integrated rural domestic sewage treatment system

A technology of domestic sewage and treatment system, applied in the field of rural domestic sewage treatment, can solve the problems of poor operation effect in winter, affecting ventilation efficiency, low nitrogen and phosphorus removal efficiency, etc. Effect

Active Publication Date: 2015-06-17
JIANGSU ZHONGWEI ENVIRONMENTAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such as land treatment system, artificial wetland sewage treatment system, biological contact oxidation tank, ecological pond sewage treatment system, soil infiltration sewage treatment system, anaerobic digester sewage treatment and other technologies have problems such as low nitrogen and phosphorus removal efficiency and poor winter operation effect , seriously affected the effect of rural environmental improvement
[0004] The existing rural domestic sewage treatment system generally also includes a regulating tank and a nitrification / denitrification reaction device, but the nitrification / denitrification reaction device is generally a split type, consisting of two shells arranged side by side, and the water pump is passed between the shells. Transmission connection, and the ventilation in the aerobic nitrification device generally uses a powered fan, which consumes a lot of energy. However, if a non-powered fan is used, due to the insufficient height of the split type, a good aerodynamic flow cannot be formed, and the non-powered fan cannot operate effectively. Affect ventilation efficiency, needs to be improved

Method used

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  • Nitrification/denitrification integrated rural domestic sewage treatment system
  • Nitrification/denitrification integrated rural domestic sewage treatment system
  • Nitrification/denitrification integrated rural domestic sewage treatment system

Examples

Experimental program
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Effect test

Embodiment 1

[0018] Example 1: Nitrification / denitrification integrated rural domestic sewage treatment system, including a regulating tank 001 and a nitrification / denitrifying combined device 002, the front side of the regulating pool 001 is provided with a grille 011, and the rear side is near the bottom of the pool. The pipeline is connected to the water pump 003, and the nitrification / denitrification combined device 002 includes a housing 021, which is divided into two upper and lower reaction zones, the upper part is an anoxic denitrification zone 022, and the lower part is an aerobic nitrification zone 023. The nitrification zone 022 includes a nitrification packing layer 221, an overflow outlet tank 222 above the nitrification packing layer 221, a non-powered fan 223, the bottom end extends into the aerobic nitrification zone 023, and the upper end extends from the top of the housing 021 and connects with the non-powered fan 223 The connected ventilation pipe 224 and the water inlet ...

Embodiment 2

[0019] Embodiment 2: Referring to Embodiment 1, the packing layer 231 in the aerobic nitrification zone is arranged as upper, middle and lower layers (231a, 231b, 231c), and the housing 021 between adjacent packing layers 231 is provided with an air inlet 231. The ventilation pipe 224 is a three-section pipe whose diameter gradually becomes smaller. The three pipes are connected end to end and pass through the nitrification packing layer 221 and the upper and middle aerobic nitrification zone packing layers (231a, 231b) respectively.

[0020] Nitrification / denitrification combination device 002 is an integrated device, which can be made of stainless steel, carbon steel anti-corrosion, glass fiber reinforced plastic and other materials. It is easy to make, low in cost, corrosion resistant and long in service life. The equipment occupies a small area, is easy to install, can be constructed in a decentralized manner, and is suitable for rural domestic sewage treatment.

[0021] U...

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Abstract

The invention relates to the technical field of rural domestic sewage treatment, and concretely relates to a rural apparatus having the advantages of decentralized sewage treatment, efficient nitrogen and phosphorus removal, energy saving and small occupied area. The apparatus includes an equalizing tank and a nitrification / denitrification combined device, a grating is arranged at the front side in the equalizing tank, a pipeline is arranged at the rear side near the bottom of the equalizing tank for connection with a water pump, wastewater is lifted by the water pump, enters an anoxic segment, and then flows into an aerobic segment, and water discharged after the above treatment meets standards. The above system has the advantages of nitrogen and phosphorus removal process, high automation degree, good discharged water quality and small occupied area, and provides a new domestic sewage treatment technology for rural areas in China.

Description

technical field [0001] The invention belongs to the field of rural domestic sewage treatment and relates to an anoxic denitrification / aerobic nitrification integrated treatment system for rural domestic sewage. Background technique [0002] Rural areas are generally far away from urban sewage pipe network. The residents live in scattered places, and the discharge of domestic sewage is small, most of which are directly discharged into rivers and lakes without any treatment. It is an important factor causing rural water environment pollution and lake eutrophication. In recent years, with the construction of new socialist countryside. The construction of well-off houses for rural residents in our country has been on the rise, and the drainage pipe network in some rural areas with better economic conditions has been improved to a certain extent. This creates good conditions for centralized treatment of rural domestic sewage. However, compared with urban domestic sewage, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
Inventor 宗国伟吉勇邓贤文谭宏林
Owner JIANGSU ZHONGWEI ENVIRONMENTAL ENG CO LTD
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