Industrial waste water treatment method

A technology for industrial wastewater and treatment methods, which is applied in the directions of water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problems that impurities are difficult to handle, unreachable, and slow to degrade. Achieve the effect of simple structure, easy operation and maintenance, and low COD value

Inactive Publication Date: 2011-03-30
李雁北
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Problems solved by technology

However, there are still many impurities in the treated sewage that are difficult to deal with, such as: organic chlorides, including chlorinated organic compounds such as chlorinated aliphatic hydrocarbons and chlorinated aromatic hydrocarbons
The chemical properties of organic chlorides are relatively stable, and they are easy to accumulate in organic matter in organisms, soil and sediments, and they degrade slowly in nature, resulting in a long cycle of environmental hazards
Many organic chlor...

Method used

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Embodiment Construction

[0007] In the technique of the present invention, what the physical and chemical precipitation of the first step adopts is a kind of flocculation decolorizing agent to coordinate with PAM coagulation aid (PAM needs to be stirred with stirrer when disposing, but intensity should not be too strong. PAM preparation concentration is generally 2 %, the dosing concentration is 0.05% to 0.1%. Due to the high viscosity, the use of a metering pump will cause blockage of the pump tube, so a screw pump is used. PAM is not corrosive, and the storage temperature should not be too low, and the time should not be too long) , through flocculation, not only can effectively remove more than 40% of COD and other suspended solids, ammonia nitrogen, etc., but also has a unique decolorization effect, the first step can make the wastewater colorless or light-colored.

[0008] In the anaerobic and aerobic stages, that is, in the A / O process, the microorganisms in the wastewater are mainly treated, and...

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PUM

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Abstract

The invention provides an industrial waste water treatment method and belongs to the technical field of industrial waste water treatment in the environmentally-friendly technology. The invention provides a treatment method for impurity content reduction and decoloration of industrial waste water. The method comprises the following steps of: removing macromolecular pollutant and solid matter from the industrial waste water by filtering or an air flotation method, and then discoloring the industrial waste water by an integrated process of physical-chemical precipitation (or air flotation), anaerobic treatment (and facultative treatment), aerobic treatment and physical-chemical precipitation.

Description

Technical field: [0001] The invention belongs to the technical field of industrial wastewater treatment in the technical field of environmental protection, and relates to a discharge treatment method for industrial sewage. Background technique: [0002] Among enterprise factories, they are mainly distributed in industries such as electronics, plastics, electroplating, hardware, printing, food, printing and dyeing. However, most of the sewage produced by these factories is only discharged into lakes, reservoirs, rivers, ponds and other aquaculture waters after certain treatment. However, there are still many impurities in the treated sewage that are difficult to deal with, for example: organic chlorides, including chlorinated organic compounds such as chlorinated aliphatic hydrocarbons and chlorinated aromatic hydrocarbons. The chemical properties of organic chlorides are relatively stable, and they are easy to accumulate in organisms, soil and organic matter in sediments. T...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/30C02F1/24C02F1/52
Inventor 李雁北
Owner 李雁北
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