Sewage treatment method

A sewage treatment method and sewage technology, applied in the direction of water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., to achieve the effects of wide application range, fewer types of chemicals, and greater operational flexibility
CN105523656AInactive Publication Date: 2016-04-27QINGDAO SEIICHI INTPROP SERVICE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QINGDAO SEIICHI INTPROP SERVICE CO LTD
Publication Date
2016-04-27
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention relates to a sewage treatment method for sewage pretreatment and deep treatment, wherein the sewage treatment method has characteristics of high treatment efficiency, high operation flexibility, less agent types, and less agent consumption. The sewage treatment method comprises: A, taking a sewage sample to be treated, adjusting the pH value of the sample to 5.5-6.0, adding FeSO4.7H2O, adjusting the pH value of the sample to 3.0-6.0, adding H2O2, controlling the redox potential at 180-220 mv, and carrying out a stirring reaction for 10-20 min to make the agent and the sample be subjected to a complete contact reaction; B, adjusting the pH value of the mixed liquid obtained in the step A to 8.0-9.0, adding polyacrylamide, and uniformly mixing; and C, stirring the mixing liquid obtained in the step B for 3-5 min at a stirring speed of 50-300 r / min to completely perform a coagulation reaction, and standing to precipitate, wherein the supernatant is the treated effluent.
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Description

technical field

[0001] The invention relates to a sewage treatment method, in particular to a sewage treatment method which can be used for sewage pretreatment and advanced treatment. Background technique

[0002] The by-product gas in oil refining production, light oil or heavy oil such as naphtha is used as raw material for thermal cracking to produce chemical raw materials such as ethylene and further reaction to synthesize various organic chemical products. The wastewater discharged during this process is called petrochemical wastewater. The wastewater discharged from the production process of synthetic rubber and synthetic plastics, fibers, detergents and other chemical raw materials such as benzene, naphthalene, methanol, glycerol, and acetaldehyde are all petrochemical wastewater, such as: acrylic fiber wastewater, oil refinery wastewater and comprehensive petrochemical industrial park wastewater. Wastewater, the pollutants in the wastewater are complex and highly tox...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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