Operation method for biodegradation of chemical wastewater

A chemical wastewater, biodegradation technology, applied in chemical instruments and methods, water pollutants, oxidized water/sewage treatment, etc., can solve the problems of large dosage, unstable operation effect, pollution, etc. Improve resource utilization and reduce the effect of flocculation operations

Inactive Publication Date: 2021-11-02
YANTAI NANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the combination of physical and chemical processes is often used for chemical wastewater operations, but there are generally disadvantages of large dosage and unstable operation effects. The above-mentioned processes also introduce new ions into the water body, causing new pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The invention discloses a biodegradation operation method of chemical wastewater. The adopted technical solution comprises the following steps:

[0032] Step 1, oil separation operation: collect chemical waste water, pass the collected chemical waste water into the oil separation pool, let the chemical waste water stand in the oil separation pool for 0.5 hours, and realize the stratification of chemical waste water and oil pollution , to obtain the pool effluent used for oil separation;

[0033]Step 2, air flotation operation: pass the effluent from the pool used for oil separation into the air flotation device, remove SS, floating oil and COD through the operation of the air flotation device, and obtain the effluent of the air flotation device. The air flotation device adopts an induced air flotation device, The air-mixing method adopts rotating mechanical air-mixing air flotation, and the air flotation time is short, generally only takes about 15 minutes, which improv...

Embodiment 2

[0047] Compared with Embodiment 1, the present embodiment is different in that:

[0048] Step 1, oil separation operation: collect chemical waste water, pass the collected chemical waste water into the oil separation pool, let the chemical waste water stand in the oil separation pool for 2 hours, realize the stratification of chemical waste water and oil pollution, Get the water out of the pool used for oil separation;

[0049] In the step 3, the chemical wastewater stays in the ozonation reactor for 80min, and the ozone concentration is 180mg / L.

[0050] Further, the size of the height screen in the solid-liquid separator is 90 mesh.

Embodiment 3

[0052] Compared with embodiment 1, this embodiment differs in that:

[0053] Step 1, carry out the oil separation operation: concentrate the waste water produced in the chemical industry, pass the collected chemical waste water into the oil separation pool, let the chemical waste water stand in the oil separation pool for 1.5 hours, and realize the separation of chemical waste water and oil pollution stratification, to obtain the pool effluent used for oil separation;

[0054] In the step 3, the chemical wastewater stays in the ozonation reactor for 70min, and the ozone concentration is 165mg / L.

[0055] Further, the size of the height screen in the solid-liquid separator is 80 mesh.

[0056] Various components not detailed in this article are known in the art.

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PUM

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Abstract

The invention provides an operation method for biodegradation of chemical wastewater, belonging to the technical field of chemical wastewater treatment. The invention aims to solve the problem of incomplete chemical wastewater degradation treatment in the prior art. The operation method comprises the following steps: oil separation treatment, air flotation treatment, oxidation treatment, flocculation treatment, biological treatment, introduction of effluent from a biological filter into a disinfection tank, and sterilization and disinfection, thereby finishing chemical wastewater treatment. According to the invention, chemical wastewater is subjected to biodegradation treatment in multiple modes, organic pollutants in the chemical wastewater are removed through the metabolism effect of microorganisms, and the method has the advantages of low cost and easy operation and is advantageous in treatment of large-flow low-concentration harmful chemical wastewater; an anaerobic biological filter and an aerobic biological filter are arranged in the biological filter, and a pH value in the biological filter is adjusted, so microorganisms in the anaerobic biological filter and the aerobic biological filter are in an optimal environment, the degradation of organic pollutants in the chemical wastewater is accelerated, and the chemical wastewater meets the requirement of up-to-standard discharge.

Description

technical field [0001] The invention relates to the technical field of chemical wastewater operation, in particular to a biodegradation operation method of chemical wastewater. Background technique [0002] Chemical wastewater refers to the chemical process wastewater, chemical cooling water, chemical waste gas washing water, washing water produced by cleaning equipment and cleaning sites discharged in chemical production. If it is discharged without operation, the various wastewater produced by the chemical industry after discharge will continue to seep into the ground, resulting in different properties and different degrees of pollution of groundwater in the area, which will not only endanger human health, but also affect industrial and agricultural production. . [0003] The industries in chemistry include not only organic but also inorganic chemical industries. Moreover, the types of products produced by chemical industry are also diverse, and the ingredients are very ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/40C02F1/24C02F1/78C02F1/001C02F2001/007C02F1/66C02F3/02C02F1/725C02F2303/04C02F2101/30
Inventor 李成王国芝张海娜毕旭成丽丹
Owner YANTAI NANSHAN UNIV
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