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Urban water pollution prevention and management method

A technology for water pollution and urban sewage, applied in water/sewage treatment, neutralized water/sewage treatment, multi-stage water/sewage treatment, etc., can solve problems such as incomplete neutralization of acid and alkali, and prevent neutralization reaction, The treatment process is simple and the effect of high-efficiency solid-liquid separation

Inactive Publication Date: 2019-09-03
SHANGHAI JIANWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method for urban water pollution prevention and treatment, which has the advantages of complete decomposition of organic matter and solves the problem of incomplete acid-base neutralization

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1. A method of urban water pollution prevention and treatment, including the following steps:

[0028] 1) Sewage pretreatment: collect urban sewage, filter the suspended solid pollutants in the sewage through a filter, and carry out a primary separation of the sewage.

[0029] 2) Coagulation: Add different coagulants such as aluminum sulfate, alum, polyaluminum chloride, ferrous sulfate and ferric chloride to the sewage to condense the colloidal substance in the water and separate it from the water, mainly to remove the sewage The removal rate of organic pollutants in colloidal and dissolved state can reach more than 90%, so that the organic pollutants can meet the emission standards.

[0030] 3) Sedimentation: The coagulated sewage flows into the sedimentation tank through advection. The sedimentation tank consists of three parts: inlet, outlet, water flow part and sludge bucket. In order to make the influent sewage enter the sedimentation tank evenly and stably, The water a...

Embodiment 2

[0035] 1. A method of urban water pollution prevention and treatment, including the following steps:

[0036] 1) Sewage pretreatment: collect urban sewage, filter the suspended solid pollutants in the sewage through a filter, and carry out a primary separation of the sewage.

[0037] 2) Coagulation: Add different coagulants such as aluminum sulfate, alum, polyaluminum chloride, ferrous sulfate and ferric chloride to the sewage to condense the colloidal substance in the water and separate it from the water, mainly to remove the sewage The removal rate of organic pollutants in colloidal and dissolved state can reach more than 90%, so that the organic pollutants can meet the emission standards.

[0038] 3) Sedimentation: The coagulated sewage flows into the sedimentation tank through advection. The sedimentation tank consists of three parts: inlet, outlet, water flow part and sludge bucket. In order to make the influent sewage enter the sedimentation tank evenly and stably, The water a...

Embodiment 3

[0043] 1. A method of urban water pollution prevention and treatment, including the following steps:

[0044] 1) Sewage pretreatment: collect urban sewage, filter the suspended solid pollutants in the sewage through a filter, and carry out a primary separation of the sewage.

[0045] 2) Coagulation: Add different coagulants such as aluminum sulfate, alum, polyaluminum chloride, ferrous sulfate and ferric chloride to the sewage to condense the colloidal substance in the water and separate it from the water, mainly to remove the sewage The removal rate of organic pollutants in colloidal and dissolved state can reach more than 90%, so that the organic pollutants can meet the emission standards.

[0046] 3) Sedimentation: The coagulated sewage flows into the sedimentation tank through advection. The sedimentation tank consists of three parts: inlet, outlet, water flow part and sludge bucket. In order to make the influent sewage enter the sedimentation tank evenly and stably, The water a...

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Abstract

The invention relates to the technical field of sewage treatment, and discloses an urban water pollution prevention and management method, which comprises: 1) sewage pretreatment: collecting urban sewage, filtering the solid pollutants in a suspended state in the sewage through a filtering screen, and carrying out primary separation on the sewage; and 2) coagulation: pouring different coagulants such as aluminum sulfate, alum, polyaluminum chloride, ferrous sulfate, ferric chloride and the like to the sewage to condense the gelatinous substances in the water so as to separate from the water. According to the present invention, with the method, mainly the organic pollutants in the colloid and dissolved state in the sewage can be removed, and the removal rate can reach more than 90%, such that the organic pollutants can reach the discharge standard; and the method can efficiently perform solid-liquid separation, can separate the suspended matters, the colloidal substances and the biological unit losing the microbial flora in the wastewater from the purified water, has simple treatment process, and can effectively decompose the organic matters in the sewage.

Description

Technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for preventing and treating urban water pollution. Background technique [0002] Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Sewage treatment is widely used in various fields such as construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering, etc. It is also increasingly used in the daily life of ordinary people. According to the source of sewage, sewage treatment is general Divided into production sewage treatment and domestic sewage treatment. [0003] In the sewage treatment process, the incomplete decomposition of organic matter affects the sludge sedimentation performance, and the incomplete acid-base neutralization is directly discharged, which destroys the acid-base neutralization reaction...

Claims

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Application Information

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IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/5236C02F1/66C02F9/00C02F2001/007C02F2301/08
Inventor 李伟王伟易哲王亮向凯
Owner SHANGHAI JIANWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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