Apparatus and process for combined treating waste water containing pesticide with ozone/hydrogen peroxide solution

A technology of pesticide wastewater and combined treatment, applied in the direction of oxidized water/sewage treatment, etc., can solve the problems of complex pollutant composition, difficult biodegradation, high wastewater concentration, and achieve high degree of equipment automation, simple device operation, and reduced effluent toxicity. Effect

Inactive Publication Date: 2005-07-27
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These wastewaters have high concentration, dark color, high toxicity, complex pollutant components and are difficult to biodegrade.

Method used

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  • Apparatus and process for combined treating waste water containing pesticide with ozone/hydrogen peroxide solution
  • Apparatus and process for combined treating waste water containing pesticide with ozone/hydrogen peroxide solution
  • Apparatus and process for combined treating waste water containing pesticide with ozone/hydrogen peroxide solution

Examples

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Effect test

Embodiment 1

[0029] Use the 2,4-D pesticide raw material produced by a pesticide factory to prepare a 2,4-D pesticide solution with a concentration of 200mg / L as the water to be treated. The pesticide-containing wastewater treatment device that uses ozone / hydrogen peroxide to jointly generate free radicals is purified under the following conditions:

[0030] Treatment method: one-time influent treatment for 60 minutes, ozonated air, hydrogen peroxide, and pH regulator are all added intermittently, and added once every 15 minutes;

[0031] Design parameters of the ozone / hydrogen peroxide mixed contact reaction unit: the net height of the reactor is 650mm, the diameter of the reaction chamber is 50mm, and the effective volume is 1.2L;

[0032] The ozonated air is filled into the system for 5 minutes every 15 minutes, and the ozone concentration in the solution phase is maintained at 5 mg / L;

[0033] Hydrogen peroxide concentration: 50mg / L

[0034] pH adjuster: 1mol / L NaOH solution to maint...

Embodiment 2

[0037] The carbofuran pesticide technical product produced by a pesticide factory was used to prepare a carbofuran pesticide solution with a concentration of 200mg / L as the water to be treated. The pesticide-containing wastewater treatment device that uses ozone / hydrogen peroxide to jointly generate free radicals is purified under the following conditions:

[0038] Treatment method: one-time influent treatment for 60 minutes, ozonated air, hydrogen peroxide, and pH regulator are all added intermittently, and added once every 15 minutes;

[0039] Design parameters of the ozone / hydrogen peroxide mixed contact reaction unit: the net height of the reactor is 650mm, the diameter of the reaction chamber is 50mm, and the effective volume is 1.2L;

[0040] The ozonated air is filled into the system for 5 minutes every 15 minutes, and the ozone concentration in the solution phase is maintained at 5 mg / L;

[0041] Hydrogen peroxide concentration: 50mg / L

[0042] pH adjuster: 1mol / L Na...

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PUM

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Abstract

An ozone-oxydol combing treating device for pesticide waste water and its process are disclosed. The device consists of an ozone-oxydol mixed contacting reacting cavity as main part. The process is carried out by taking dried and purified air as material, ozone air with silent discharging method generation flowing by the bottom of ozone-oxydol mixed contacting reacting cavity, air scattering uniformly, oxydol solution and sodium hydroxide solution pumping into a feed liquid dog house of a contacting reacting cavity at low flowing speed, rapid oxidizing degrading small molecular organic compound under strong oxidative hydroxy radical action. It can be used for other organic sewage purifying treatment.

Description

technical field [0001] The invention relates to the field of environmental protection sewage treatment, in particular to the field of degradation of pesticide-containing wastewater. Background technique [0002] my country is one of the first countries in the world to start using pesticides, but the development of the pesticide industry is not satisfactory. The scale of pesticide factories in my country is generally small, the production technology is relatively backward, and the investment in environmental governance is low. Many pesticide factories are serious sources of pollution, and pollution accidents often occur. The surface water, groundwater, and soil around the pesticide factories are all seriously polluted, and the environmental quality is extremely poor. my country's pesticide "three wastes" pollution control is imminent. [0003] Among all sources of pesticides in water bodies, wastewater discharge from pesticide factories, including synthesis reaction producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/78
Inventor 陈爱因孙红文李克勋
Owner NANKAI UNIV
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