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Deep treatment method of high-salt organic sewage

A technology of organic sewage and advanced treatment, applied in water/sewage treatment, light water/sewage treatment, oxidized water/sewage treatment, etc. The effect of improving the current efficiency

Active Publication Date: 2018-08-03
江西楚杭环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the complexity and refractory nature of high-salt organic sewage components, there are certain limitations in the use of a single sewage treatment technology. At the same time, a large amount of inorganic salts and heavy metals in high-salt organic sewage are microbial inhibitors and toxic agents. It can also lead to substandard water quality

Method used

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Effect test

Embodiment 1

[0030] A method for advanced treatment of high-salt organic sewage, the method comprising the following steps:

[0031] Step 1. Pretreatment: sort the high-salt organic sewage through the coarse mechanical grid, and then crush the impurities through the fine mechanical grid, and then enter the cyclone grit chamber for treatment;

[0032] Step 2. Electrocoagulation precipitation: adjust the pH of the effluent from the cyclone grit chamber to 3.0 and then enter the electrocoagulation tank. Aluminum is used as the anode and stainless steel is used as the cathode. Pulse current electrolysis is used, and the electrode change cycle is 600s. The electrolyzed aluminum ions form colloids It can absorb suspended particles, colloids, and organic matter in sewage, and OH produced by hydrogen evolution at the cathode - Combine with heavy metal ions to form precipitates;

[0033] Step 3, UV-ozone-ultrasonic combined reaction section: pass the effluent from the electrocoagulation tank into ...

Embodiment 2

[0038] A method for advanced treatment of high-salt organic sewage, the method comprising the following steps:

[0039] Step 1. Pretreatment: sort the high-salt organic sewage through the coarse mechanical grid, and then crush the impurities through the fine mechanical grid, and then enter the cyclone grit chamber for treatment;

[0040] Step 2. Electrocoagulation precipitation: Adjust the pH of the effluent from the cyclone grit chamber to 3.5 and then enter the electrocoagulation tank. Aluminum is used as the anode and stainless steel is used as the cathode. Pulse current electrolysis is used, and the electrode change cycle is 700s. The electrolyzed aluminum ions form colloids It can absorb suspended particles, colloids, and organic matter in sewage, and OH produced by hydrogen evolution at the cathode - Combine with heavy metal ions to form precipitates;

[0041] Step 3, UV-ozone-ultrasonic combined reaction section: pass the effluent from the electrocoagulation tank into ...

Embodiment 3

[0046] A method for advanced treatment of high-salt organic sewage, the method comprising the following steps:

[0047] Step 1. Pretreatment: sort the high-salt organic sewage through the coarse mechanical grid, and then crush the impurities through the fine mechanical grid, and then enter the cyclone grit chamber for treatment;

[0048] Step 2. Electrocoagulation precipitation: adjust the pH of the effluent from the cyclone grit chamber to 4.0 and then enter the electrocoagulation tank. Aluminum is used as the anode and stainless steel is used as the cathode. Pulse current electrolysis is used, and the electrode change cycle is 800s. The electrolyzed aluminum ions form colloids It can absorb suspended particles, colloids, and organic matter in sewage, and OH produced by hydrogen evolution at the cathode - Combine with heavy metal ions to form precipitates;

[0049] Step 3, UV-ozone-ultrasonic joint reaction section: pass the effluent from the electrocoagulation tank into the...

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Abstract

The invention discloses a deep treatment method of high-salt organic sewage. The method comprises the following steps: step one, carrying out pretreatment; step two, carrying out electroflocculation and precipitation; step three, carrying out ultraviolet-ozone-ultrasound combined reaction stage; step four, carrying out electrolysis treatment through three dimension electrodes; step five, filteringthrough three-dimensional graphene sponge; and step six, carrying out ultrafiltration-electrodialysis coupled desalinization. The method is free of biological treatment processes and high in processflexibility; compared with the common sewage treatment method, the treatment period is greatly shortened; meanwhile, the method is high in desalinization rate, simple to operate, high in efficiency, free of secondary pollution and low in cost, and is capable of completely removing organic matters, recycling the heavy metals and directly recycling the treated high-salt organic sewage.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an advanced treatment method for high-salt organic sewage. Background technique [0002] Currently, water pollution is one of the urgent problems in China. With the continuous increase of industrial production, the discharge of industrial sewage is becoming more and more serious. A large amount of industrial sewage is directly discharged into the river, which endangers the aquatic biological system and seriously affects human life. [0003] High-salt sewage refers to wastewater containing organic matter and at least a mass fraction of total dissolved solids TDS ≥ 3.5%, including high-salt domestic sewage and high-salt industrial sewage. In addition to organic pollutants, these sewage also contain a large amount of inorganic salts, such as Cl - , SO 4 2- 、Na + , Ca 2+ Plasma. High-salt organic sewage generally has the characteristics of high chroma, which not only ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
CPCC02F1/32C02F1/444C02F1/46109C02F1/469C02F1/4693C02F1/48C02F1/56C02F1/78C02F9/00C02F2001/46133
Inventor 许欠欠
Owner 江西楚杭环保科技有限公司
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