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Combined pretreatment method for industrial wastewater

A technology for industrial wastewater and pretreatment, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve industrial wastewater with complex components, high concentration and toxicity, high treatment cost, etc. problem, to achieve the effect of water erosion resistance, good effect and low operating cost

Inactive Publication Date: 2013-04-10
ORIENT SH ENVIRONMENT PROTECHTION ENG & TECH
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Problems solved by technology

[0008] Due to the complex composition, large changes, high concentration and toxicity of industrial sewage, it is usually difficult to achieve the expected purpose by using a single traditional pretreatment technology, and the treatment cost is high and uneconomical

Method used

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  • Combined pretreatment method for industrial wastewater
  • Combined pretreatment method for industrial wastewater
  • Combined pretreatment method for industrial wastewater

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Embodiment Construction

[0032] Below in conjunction with specific embodiment, further set forth the present invention:

[0033] like figure 1 Shown, a kind of industrial wastewater combined pretreatment method comprises the following steps:

[0034] 1) Ozone is generated in the ozone generating tube under the action of a narrow pulse high-voltage power supply;

[0035] 2) Venturi mixing of wastewater and the generated ozone;

[0036] 3) The mixed ozone mixed water and the generated ozone are mixed for the second time through the dissolved air mixing pump;

[0037] 4) After the second mixing, the ozone mixed water is sent to the ultrasonic generator for ultrasonic treatment;

[0038] 5) The ultrasonically treated wastewater enters the photolysis reactor for photolysis reaction;

[0039] 6) After the photolysis reaction, ozone catalysis and electro-oxidation reaction are carried out.

[0040] The ultrasonic generator of the present invention is a focused ultrasonic generator 1; a catalyst 7 is use...

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Abstract

The invention discloses a combined pretreatment method for industrial wastewater. The method comprises the following steps: 1) generating ozone at an ozone generating tube under the action of a narrow-pulse high voltage power supply; 2) venturi mixing wastewater with the generated ozone; 3) secondary mixing the mixed ozone mixing water with the generated ozone through a dissolved-air mixing pump; 4) putting the ozone mixing water obtained by the secondary mixing in an ultrasonic generator for ultrasonic treatment; 5) putting the wastewater after ultrasonic treatment in a photolysis reactor for photolysis reaction; and 6) after the photolysis reaction, carrying out catalytic ozonation and electrooxidation reaction. According to the method, harmful substances in water can be effectively removed. The method is a high-efficiency economic wastewater pretreatment method.

Description

technical field [0001] The invention belongs to the field of environmental protection, more specifically, it is a method for pretreatment or advanced treatment of high-concentration wastewater in industrial production, especially in chemical and pharmaceutical industries. Background technique [0002] In my country, the amount of organic chemical wastewater is increasing year by year. In 1995 alone, the discharge of industrial wastewater (excluding township enterprises) in my country was 22.3 billion tons, containing 7.7 million tons of COD, 1,823 tons of heavy metals, 1,132 tons of arsenic, 2,504 tons of cyanide, 6,366 tons of volatile phenols and 64,341 tons of petroleum, of which only 12.3 billion tons of wastewater meet the discharge standards [1]. The rest, especially high-concentration refractory organic wastewater, has caused serious pollution to the environment. In chemical industry, metallurgy, coking, dyestuff, pesticide and other industries. There is no effective t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08
Inventor 刘学来
Owner ORIENT SH ENVIRONMENT PROTECHTION ENG & TECH
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