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Countryside sewage treating method

A technology of rural sewage and sewage, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the lack of governance models and process technologies, immaturity, and lack of decentralized sewage treatment systems Targeted research and other issues to achieve the effect of simplified structure, small investment and simple structure

Inactive Publication Date: 2011-09-14
徐祖信 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, compared with the maturity and diversification of centralized sewage treatment technology, there is still a lack of targeted research on decentralized sewage treatment systems, and the related governance models and process technologies are also extremely scarce and immature

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] Process parameters: the treatment object is domestic sewage, and the average influent concentration is COD Cr =258.69mg / L, BOD 5 =110mg / L, TN=25.07mg / L, TP=3.09mg / L, NH 4 - N = 20.93 mg / L.

[0025] The treatment process is as follows: sewage enters the grit chamber for sedimentation and then enters the JACR reaction tank 1, controls the aeration of the jet aerator 4 through the electric control cabinet 3, and discharges the water through the submersible sewage pump 5. The operation cycle is 4 days, and the processing capacity is 4m 3 / d, the aeration cycle is 15 minutes every 2 hours, the sludge concentration MLSS value varies with the water level in the pond, and is 2540-5250mg / L, and the air-water ratio is 15:1.

[0026] Treatment effect: After the JACR process treatment, the average concentration of the effluent of each index is: COD Cr =52.25mg / L, BOD 5 =12mg / L, TN=2.81mg / L, TP=0.96mg / L, NH 4 -N=0.62mg / L, SS=12.8mg / L, the effluent water quality reaches the fir...

Embodiment 2

[0029] Process parameters: engineering design processing capacity is 30m 3 / d, the operation period is 6 days, the aeration period is 15 minutes every 2 hours, and the air-water ratio is 15:1. The average influent concentration is COD Cr =318.82mg / L, BOD 5 =135mg / L, TN=33.47mg / L, TP=7.54mg / L, NH 4 -N=26.29 mg / L, SS=134.5 mg / L.

[0030] The treatment process is as follows: sewage enters the grit chamber for sedimentation and then enters the JACR reaction tank 1, controls the aeration of the jet aerator 4 through the electric control cabinet 3, and discharges the water through the submersible sewage pump 5.

[0031] Treatment effect: After the JACR process treatment, the average concentration of the effluent of each index is: COD Cr =54.42mg / L, BOD 5 =10mg / L, TN=5.41mg / L, TP=0.87mg / L, NH 4 -N=3.14mg / L, SS=15mg / L, both of which have reached the first-class B discharge standard in the national urban sewage treatment plant pollutant discharge standard (GB18918-2002).

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Abstract

The present invention discloses one countryside sewage treating method, which is one combined mode of distributed collecting and treating, movable depth treating and sludge treating, and proposes corresponding jetting aeration and periodical active sludge process for the distributed collecting and treating stage. The present invention solves the problem in treating countryside sewage, and has the advantages of being dispersive, small, low in cost, low in power consumption and simple in running and maintenance.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a new rural sewage treatment method. Background technique [0002] With the development of my country's industrial and agricultural production and the growth of population, the problem of environmental pollution is becoming more and more serious. Because my country's current industrial pollution has a relatively large impact on agricultural production, it has covered up the contradiction of non-point source pollution in agriculture itself to a certain extent, resulting in future Those who become potential threats and have already caused bad consequences. For example, studies have shown that non-point source pollution is one of the important reasons for the eutrophication of lakes such as Taihu Lake and Dianchi Lake. Domestic sewage is an important part of rural non-point source pollution, which has not been effectively treated in many areas of our cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F11/12
CPCY02W10/10
Inventor 徐祖信李怀正栾永翔甘晓明
Owner 徐祖信
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