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Expressway service area sewage treatment process

A technology for expressway and sewage treatment, applied in biological water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems of large floor space and large one-time investment.

Inactive Publication Date: 2016-12-14
YUNNAN SHENGQING ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Oxidation ditch has simple structure, convenient operation and management, stable treatment effect and wide application, but it has a large one-time investment and covers a large area, so it is suitable for large water treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A sewage treatment process for expressway service areas, comprising the following steps in sequence:

[0017] (1) After the domestic sewage, kitchen water, washing water, and car washing water in the expressway service area are collected through pipes and canals, the coarse grid and oil removal baffle of the buried adjustment tank are used to remove large particles of suspended matter and slick oil. The hydraulic retention time of the buried regulating tank is 6h;

[0018] (2) The pretreated sewage undergoes biochemical reactions in the aerobic reaction zone and anoxic precipitation zone, and then completely traps the microorganisms in the biological system in the reactor through the membrane modules in the membrane bioreactor, and undergoes solid-liquid Separation, the hydraulic retention time of its biochemical reaction zone and solid-liquid separation zone is 6.5h;

[0019] (3) The treated sewage is disinfected through the chlorination corridor, and the contact time...

Embodiment 2

[0022] A sewage treatment process for expressway service areas, comprising the following steps in sequence:

[0023] (1) After the domestic sewage, kitchen water, washing water, and car washing water in the expressway service area are collected through pipes and canals, the coarse grid and oil removal baffle of the buried adjustment tank are used to remove large particles of suspended matter and slick oil. The hydraulic retention time of the buried regulating tank is 7h;

[0024] (2) The pretreated sewage undergoes biochemical reactions in the aerobic reaction zone and anoxic precipitation zone, and then completely traps the microorganisms in the biological system in the reactor through the membrane modules in the membrane bioreactor, and undergoes solid-liquid Separation, the hydraulic retention time of its biochemical reaction zone and solid-liquid separation zone is 7.8h;

[0025] (3) The treated sewage is disinfected through the chlorination corridor, and the contact time...

Embodiment 3

[0028] A sewage treatment process for expressway service areas, comprising the following steps in sequence:

[0029] (1) After the domestic sewage, kitchen water, washing water, and car washing water in the expressway service area are collected through pipes and canals, the coarse grid and oil removal baffle of the buried adjustment tank are used to remove large particles of suspended matter and slick oil. The hydraulic retention time of the buried regulating tank is 8h;

[0030] (2) The pretreated sewage undergoes biochemical reactions in the aerobic reaction zone and anoxic precipitation zone, and then completely traps the microorganisms in the biological system in the reactor through the membrane modules in the membrane bioreactor, and undergoes solid-liquid Separation, the hydraulic retention time of its biochemical reaction zone and solid-liquid separation zone is 9.6h;

[0031] (3) The treated sewage is disinfected through the chlorination corridor, and the contact time...

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PUM

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Abstract

The invention discloses an expressway service area sewage treatment process. The expressway service area sewage treatment process includes the steps that an A / O method and a contact oxidation method are integrated to treat expressway service area sewage, the pretreated sewage passes through an aerobic reaction area and an anoxic reaction area to carry out biochemical reaction, solid-liquid separation is carried out through a membrane bioreactor, and finally the sewage is treated through a chlorination disinfecting gallery to be drained after reaching the standards. The expressway service area sewage treatment process has the advantages that the process output water is high in quality, and the water can be directly returned to all other functional areas of an expressway after being disinfected, little sludge is remained and prone to dehydration, all the indexes, such as CODCr, BOD5,SS, NH4-NTN, TP and petroleum concentration of the output water can meet the standards of domestic sewage drainage.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment in expressway service areas, and in particular relates to a sewage treatment process in expressway service areas. Background technique [0002] Expressway is a necessary means of transportation for the survival and development of human beings. Its development and construction activities will have direct or indirect negative impacts on the surrounding environment. These impacts are generally divided into two categories: one is the destruction of the natural environment, Such as soil erosion and vegetation destruction, which can cause ecological balance imbalance and abnormal climate in severe cases; the other type is environmental pollution, such as noise, waste water, waste gas and dust. Expressway service areas generally have catering, accommodation, refueling, car washing, maintenance, public toilets and other service facilities to provide rest, catering, maintenance, refueling and othe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14
CPCC02F1/001C02F1/40C02F1/50C02F3/1268C02F3/301C02F9/00
Inventor 黄志红周颖梅冰
Owner YUNNAN SHENGQING ENVIRONMENTAL PROTECTION TECH CO LTD