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UV-FENTON wastewater treatment process

A UV-FENTON and wastewater treatment technology, which is applied in the field of UV-FENTON wastewater treatment process, can solve the problems of high salt concentration in wastewater and high proportion of refractory biodegradable substances, so as to save usage, improve oxidation and decomposition efficiency, and improve efficiency effect

Active Publication Date: 2020-06-05
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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  • UV-FENTON wastewater treatment process

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Embodiment 1 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;

[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 wi...

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 invention relates to a UV-FENTON wastewater treatment process which specifically comprises the following steps: S1, feeding organic wastewater into an intermediate tank, adding an H2SO4 solution into the intermediate tank to adjust the pH value of the wastewater, and feeding the organic wastewater into a Fenton reaction tank; S2, adding an H2O2 solution and iron-coated microspheres into the Fenton reaction tank, and increasing UV light irradiation, so that the organic matters are fully reacted and decomposed; S3, allowing effluent of the Fenton reaction tank to enter a degassing and neutralization tank, removing O2 generated by the Fenton reaction by stirring, and adjusting the pH value of the wastewater to 7.5-8.5; S4, allowing effluent of the degassing and neutralization tank to enter a coagulation tank, adding a flocculant and a coagulant aid, and stirring to form flocs; S5, allowing effluent of the coagulation tank to enter a sedimentation tank, recovering flocs to a sludge treatment system for treatment, and allowing effluent of the supernatant to enter an ultrafiltration tank; and S6, filtering the supernatant by using a hollow fiber ultrafiltration membrane, recovering filter residues to the sludge treatment system, compressing the filter residues together with the flocs into filter cake, transporting the filter cake outwards, and directly discharging the filtrate. The process is beneficial to improving the treatment effect of the organic wastewater.

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, the industry generally refers to organic wastewater with a BOD5 / COD value lower than 0.3 as refractory organic wastewater. [0003] The reason why refractory organic wastewater is difficult to be tr...

Claims

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Application Information

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Patent Type & Authority Applications(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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