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A uv-fenton wastewater treatment process

A UV-FENTON, wastewater treatment technology, applied in the field of UV-FENTON wastewater treatment process, can solve the problems of high salt concentration in wastewater, high proportion of biorefractory species, etc., to achieve recycling, improve oxidative decomposition efficiency, save energy The effect of usage

Active Publication Date: 2022-03-08
深圳市蓝清环境科技工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, this kind of wastewater has the following common characteristics in terms of water quality and water quantity: (1) There are many types of biodegradable substances in organic matter and a high proportion; (2) In addition to organic matter, the wastewater has a high salt concentration; (3) Wastewater treatment method itself also has big problems

Method used

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  • A uv-fenton wastewater treatment process
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  • A uv-fenton wastewater treatment process

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 is a UV-FENTON wastewater treatment process disclosed by the present invention, which specifically includes the following steps: S1. Intermediate pool: organic wastewater enters the intermediate pool, and H is added to the intermediate pool through the dosing system. 2 SO 4 The solution adjusts the pH value of the wastewater to 3.2, and then feeds the organic wastewater into the Fenton reaction tank through the inlet pump;

[0038] S2. Fenton reaction cell: add H to the Fenton reaction cell through the dosing system 2 o 2 solution and iron-coated microspheres, H 2 o 2 with Fe 2+ The molar ratio is 4:1, and the UV light is turned on to increase the UV light irradiation, so that the organic matter can fully react and decompose in the Fenton reaction tank, and the residence time of organic wastewater in the Fenton reaction tank is 1h; the iron-coated microspheres are formed by lipid compound, the surface is covered with FeSO 4 Powder, embedded with coppe...

Embodiment 2

[0043] Embodiment 2 is a kind of UV-FENTON wastewater treatment process disclosed by the present invention, which specifically includes the following steps: S1. Intermediate pool: organic wastewater enters the intermediate pool, and H is added to the intermediate pool through the dosing system. 2 SO 4 The solution adjusts the pH value of the wastewater to 3.2, and then feeds the organic wastewater into the Fenton reaction tank through the inlet pump;

[0044] S2. Fenton reaction cell: add H to the Fenton reaction cell through the dosing system 2 o 2 solution and iron-coated microspheres, H 2 o 2 with Fe 2+ The molar ratio is 3:1, and the UV lamp is turned on to increase the UV light irradiation, so that the organic matter can fully react and decompose in the Fenton reaction tank, and the residence time of the organic wastewater in the Fenton reaction tank is 1h; the iron-coated microspheres are formed by lipid compound, the surface is covered with FeSO 4 Powder, embedded...

Embodiment 3

[0049] Embodiment 3 is a kind of UV-FENTON wastewater treatment process disclosed by the present invention, specifically comprising the following steps:

[0050] S1. Intermediate pool: Organic wastewater enters the intermediate pool, and H is added to the intermediate pool through the dosing system 2 SO 4 The solution adjusts the pH value of the wastewater to 3.2, and then feeds the organic wastewater into the Fenton reaction tank through the inlet pump;

[0051] S2. Fenton reaction cell: add H to the Fenton reaction cell through the dosing system 2 o 2 solution and iron-coated microspheres, H 2 o 2 with Fe 2+ The molar ratio is 5:1, and the UV light is turned on, and the UV light irradiation is increased, so that the organic matter can fully react and decompose in the Fenton reaction tank, and the residence time of the organic wastewater in the Fenton reaction tank is 1h; the iron-coated microspheres are formed by lipid compound, the surface is covered with FeSO 4 Powd...

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Abstract

The present invention relates to a kind of UV-FENTON waste water treatment process, specifically comprises the following steps: S1. Organic waste water enters intermediate pond, adds H to intermediate pond 2 SO 4 The solution adjusts the pH value of the wastewater, and the organic wastewater is fed into the Fenton reaction tank; S2. Adding H to the Fenton reaction tank 2 o 2 Solution and iron-coated microspheres, and increase UV light irradiation, so that the organic matter is fully reacted and decomposed; S3. The effluent from the Fenton reaction tank enters the degassing neutralization tank, and the O produced by the Fenton reaction is removed by stirring. 2 , adjust the pH value of the wastewater to 7.5-8.5; S4. The effluent from the degassing neutralization tank enters the coagulation tank, adds flocculants and coagulants, and stirs to form flocs; S5. The effluent from the coagulation tank enters the sedimentation tank, and the flocs are recovered To the sludge treatment system for treatment, the supernatant effluent enters the ultrafiltration tank; S6. Use the hollow fiber ultrafiltration membrane to filter the supernatant, and the filtrate is recycled to the sludge treatment system and compressed into a filter cake together with the flocs Transported outside, the filtrate is discharged directly. The invention is beneficial to improve the treatment effect of organic waste water.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a UV-FENTON wastewater treatment process. Background technique [0002] The treatment of refractory organic wastewater is a recognized problem in the field of sewage treatment at home and abroad. For this type of wastewater, there are currently more researches at home and abroad on industrial wastewater such as coking wastewater, pharmaceutical wastewater, petrochemical oily wastewater, textile and printing and dyeing wastewater, chemical wastewater, and paint wastewater. The so-called "refractory" refers to the low biodegradability of this type of wastewater, that is, the BOD5 / COD value is generally below 0.3 or even lower, and it is difficult to biodegrade. Therefore, organic wastewater with a BOD5 / COD value lower than 0.3 is generally referred to as refractory organic wastewater in the industry. [0003] The reason why refractory organic wastewater is difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F1/32C02F1/70C02F1/72C02F101/30
CPCC02F9/00C02F1/32C02F1/725C02F1/722C02F1/70C02F1/66C02F1/20C02F1/52C02F2001/007C02F1/444C02F1/56C02F1/5236C02F2101/30C02F2301/08C02F2303/14
Inventor 王中洲许坚立罗时丽王丽程洋洋佘征平吴修宏王丽琼邹祝琪陆家勋
Owner 深圳市蓝清环境科技工程有限公司
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