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Deep treatment technology and device for non-biodegradable wastewater

A technology of advanced treatment and biochemical treatment, applied in biological water/sewage treatment, oxidized water/sewage treatment, multi-stage water/sewage treatment, etc., can solve the problems of large chemical sludge, mediocre effect, high cost, etc., and achieve Improve the biodegradability, rapid response, and reduce the effect of oxygenation energy consumption

Pending Publication Date: 2019-07-23
浙江巨能环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the treatment methods for this kind of biodegradable wastewater mainly include advanced oxidation (such as ozone oxidation, Fenton oxidation, hypochlorite oxidation, UV, etc.) or activated carbon adsorption. These treatment methods have strong selectivity, and none of them can Solve all wastewater challenges, at an expensive cost
Fenton oxidation needs to consume a large amount of chemicals and produce a large amount of chemical sludge, and there is a risk of secondary pollution; hypochlorite oxidation will produce potentially carcinogenic chlorinated organic compounds, and the effect is relatively general; UV oxidation is also effective; similarly, activated carbon adsorption is also very effective. Strong selectivity, and will cause a large amount of waste activated carbon (currently the government generally classifies it as hazardous waste) to be disposed of

Method used

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  • Deep treatment technology and device for non-biodegradable wastewater
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  • Deep treatment technology and device for non-biodegradable wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0017] The COD of the effluent after biochemical treatment in a centralized sewage treatment plant in a chemical industry park is as high as 200-300mg / L (BOD is less than 5 mg / L, which is not biodegradable), and the following treatment is carried out:

[0018] Step 1: Ozone ultrasonic synergistic oxidation treatment: non-biodegradable wastewater flows into the water inlet of the gas dissolver, and the ozone gas generated by the ozone generator enters the wastewater to be treated through the ozone inlet hole of the gas dissolver, and is fully mixed with the wastewater. Control the proportional relationship between the dosage of ozone and the amount of COD required to degrade, referred to as the O / C ratio, to control the dosage of ozone, and the O / C ratio is controlled at 2mgO 3 / mgCOD; then the wastewater dissolved with ozone gas is discharged from the diffusion section of the gas dissolver and enters the ultrasonic reactor (liquid whistle or reed ultrasonic generator), under th...

Embodiment 2

[0022] Such as figure 1 As shown, the advanced treatment device of a kind of biodegradable wastewater described in this embodiment includes an ozone reactor 1, an air dissolver 4, an ultrasonic generator 6 and a CBR biofilm reaction tank 2, and the air dissolver 4 and Ozone generator 3, water inlet pump, ultrasonic generator 6 are connected, and ultrasonic generator 6 is connected with ozone reactor 1, as figure 2 As shown, the gas dissolver 4 includes an inlet section 4-1, a contraction section 4-2, a throat 4-3 and a diffusion section 4-4, and an ozone inlet hole is provided at the throat 4-3 of the gas dissolver 4 5. The ozone inlet hole 5 is connected to the ozone generator 3; the inlet of the inlet section 4-1 of the gas dissolver 4 is connected to the water inlet pump, and the outlet of the diffuser section 4-4 of the gas dissolver 4 is connected to the liquid whistle ultrasonic generator 6 connection; the water outlet end of the ozone reactor 1 is connected with the w...

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Abstract

The invention belongs to the technical field of wastewater treatment, in particular to a deep treatment technology for non-biodegradable wastewater. The deep treatment technology comprises the following steps: step 1: carrying out ozone and ultrasound cooperative oxidization treatment; step 2: carrying out biochemical treatment. A deep treatment device for the non-biodegradable wastewater comprises an ozone gas dissolving device, an ozone generator, an ultrasonic reactor, an ozone reactor and a CBR biofilm reaction cell, which are arranged in sequence. According to the deep treatment technology and the deep treatment device, an ozone and ultrasound cooperative oxidization technology and a CBR biochemical treatment technology are coupled, so that the ozone treatment cost can be reduced andozone can be utilized at maximum, and the optimal treatment effect of the non-biodegradable wastewater is realized; meanwhile, hazardous waste including sludge and the like are not generated and secondary pollution to the environment is not caused; the implementation cost of the technology is relatively low and the water quality of output water is good, so that the deep treatment technology and the deep treatment device are suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to an advanced treatment process and device for non-biodegradable wastewater or tail water (collectively referred to as non-biodegradable wastewater). Background technique [0002] The biodegradable wastewater after biochemical treatment has almost no biodegradability, especially the effluent of chemical wastewater biochemical treatment, the general COD concentration is 50-300mg / L, and the residual pollutants are basically biodegradable organic substances. At present, for the direct discharge of wastewater treatment facilities in chemical industry or chemical industry parks, the discharge standard generally requires Class I A, that is, COD is lower than 50mg / L, and some even require COD to be lower than 30mg / L to be discharged. At present, the treatment methods for this kind of biodegradable wastewater mainly include advanced oxidation (such as ozone oxidati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/30
CPCC02F9/00C02F1/78C02F1/36C02F3/085C02F2101/30
Inventor 严月根吴华明凌明袁妤刘芳蕾叶国祥郭慧
Owner 浙江巨能环境工程有限公司
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