Sewage treatment method

A sewage treatment method and sewage technology, which are applied in the fields of water/sewage multi-stage treatment, water/sludge/sewage treatment, multi-stage water treatment, etc. The effect of high recycling rate and high chemical efficiency

Inactive Publication Date: 2017-02-22
ANHUI XINRUI HEAVY IND
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Problems solved by technology

[0002] At present, the large increase in industrial and domestic water has led to a rapid increase in sewage discharge. Iron and steel industry sewage, food industry sewage, printing sewage, chemical sewage and domestic sewage are the main sources of water pollution, especially industrial sewage. Most production enterprises have not It is directly discharged after treatment, polluting rivers and lakes, reducing aquatic animals and plants, deteriorating drinking water quality, environmental pollution and ecological balance are greatly damaged; and many useful substances (such as precious metal elements) in sewage are also destroyed. Wasted, so a new technical solution is needed to solve the above problems

Method used

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Embodiment Construction

[0018] In order to understand the technical means, creative features, objectives and effects of the present invention clearly, the present invention is further described below.

[0019] The invention discloses a sewage treatment method, comprising the following steps:

[0020] A. First, the sewage is sent to the first sedimentation tank, and a preliminary filter is added to the front end of the first sedimentation tank to isolate large impurities.

[0021] B. Add materials such as loess, charcoal and lime powder to the sewage in the first sedimentation tank, and use a stirring device to move the water while adding the materials. After the materials are added, stop stirring and carry out preliminary precipitation;

[0022] C. Send the upper layer of sewage from the first sedimentation tank to the second sedimentation tank, and introduce the sewage from the lower layer into the waste water tank;

[0023] D. Add sodium sulfite, polyacrylamide and other substances into the second...

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Abstract

The invention discloses a sewage treatment method. The method applies a first sedimentation pond, a second sedimentation pond, a third sedimentation pond, a sewage pond and the like. The method applies multi-stage circulation reciprocation filtration treatment. The last stage is the recycling treatment and the like. Compared with the prior art, the method uses the multi-stage circulation treatment manner, adds different purifying agents for the different treatment of different levels of sewage water, and recycles the sewage water at last. The method has the advantage of high purifying efficiency and high reusable rate.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a sewage treatment method. Background technique [0002] At present, the large increase in industrial and domestic water has led to a rapid increase in sewage discharge. Iron and steel industry sewage, food industry sewage, printing sewage, chemical sewage and domestic sewage are the main sources of water pollution, especially industrial sewage. Most production enterprises have not It is directly discharged after treatment, polluting rivers and lakes, reducing aquatic animals and plants, deteriorating drinking water quality, environmental pollution and ecological balance are greatly damaged; and many useful substances (such as precious metal elements) in sewage are also destroyed. Wasted, so a new technical solution is needed to solve the above problems. Contents of the invention [0003] The object of the present invention is to provide a sewage treatment method, which...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/52C02F1/001C02F2301/08
Inventor 桂新辉
Owner ANHUI XINRUI HEAVY IND
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