Sewage disposal method and apparatus

A sewage treatment method and technology of sewage treatment device, which are applied in the fields of dewatering/drying/concentrating sludge treatment, aerobic and anaerobic process treatment, etc.
CN101376541AInactive Publication Date: 2009-03-04NINESTAR IMAGE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINESTAR IMAGE CO LTD
Publication Date
2009-03-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the technical field of sewage treatment, particularly method and device for combined utilization and advanced purification of waste water at different pollution levels. The method comprises the conventional sewage treatment steps of sewage collection, physicochemical treatment, anaerobic treatment, aerobic treatment and sand filtration, in addition of a sewage control step. In the sewage control step, the chemical oxygen demand (COD) of sewage is controlled by using waste water at different pollution levels. In the physicochemical treatment step, the multi-stage physicochemical treatment method is adopted, and the physicochemical pond device structures and the physicochemical agents in the individual stages are different from each other, thereby reducing the COD value and the colority of the sewage and achieving the pretreatment effect before biochemical treatment. The sewage treatment method and the sewage treatment device can reduce the COD value of sewage from ten thousand to one hundred and ensure that the sewage meets the sewage drainage standard. The sewage treatment method and the sewage treatment device have the advantages of stable quality of the treated sewage, high treatment capacity and low treatment cost.
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Description

technical field

[0001] The invention relates to a sewage treatment method and a device thereof. Background technique

[0002] There are many kinds of pollutants in wastewater, and it is often impossible to remove all pollutants with one treatment unit, especially some highly polluted wastewater. Generally, a kind of wastewater often needs to be treated by a treatment system composed of several methods and several treatment units before it can be discharged up to standard.

[0003] According to the principle of action, it can be roughly divided into four categories: physical treatment, chemical treatment, physical chemical treatment and biological treatment. 1. Physical method: It is a wastewater treatment method that separates and recovers insoluble suspended pollutants in wastewater through physical action. Physical methods are further divided into: gravity separation method (mud-water separation), centrifugal separation method and sieve interception method, etc. 2. Chem...

Claims

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