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System and method for processing waste water based on photochemical reaction

A wastewater treatment system and photochemical reaction technology, which are applied in chemical instruments and methods, light water/sewage treatment, oxidized water/sewage treatment, etc. It can improve the use efficiency and energy utilization rate, reduce the cost of the treatment agent, and save the consumption.

Inactive Publication Date: 2009-08-26
白妮 +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The problem is that this method needs to be carried out under acidic conditions (usually PH≤3), and the consumption of iron (II) ions and hydrogen peroxide is large, and the treated effluent needs a large amount of NaOH to neutralize, so that a lot of sludge is generated. And easy to cause secondary pollution
Because there are still many problems in this basic treatment process, especially for organic wastewater with high chroma and high chemical oxygen demand with extremely poor light transmittance, it is difficult for the photocatalyst dispersed in the wastewater to be irradiated by light effectively. The consumption of photocatalyst is large, the efficiency of wastewater treatment is low, and energy waste is serious; and the suspension of photocatalyst requires a special device, and the water after treatment requires a solid-liquid separation device, which has high processing costs; the scale of the reaction device cannot be large, etc. These factors are limiting its practical application

Method used

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  • System and method for processing waste water based on photochemical reaction
  • System and method for processing waste water based on photochemical reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0043] see figure 1 , The organic wastewater treatment system based on photochemical reaction of the present invention includes a photochemical generator (abbreviated as generator) 1, photochemical reaction pool (abbreviated as reaction pool) 2, generator 1 and reaction pool 2 are connected in series.

[0044] Photochemical generator 1 comprises a container body 30, lower grille 12, upper grille 14, ultraviolet lamp 3 and liquid level controller 16, and container body 30 is provided with water inlet 11 and is used for inputting hydrogen peroxide and complexing agent The infusion valve 13, the lower grille 12 and the upper grille 14 are arranged in the container body 30, and a storage space for accommodating the photocatalyst 5 is separated in the container body 30, and the setting position of the water inlet 11 on the container body 30 is located in the lower compartment. Below the grid 12, the position of the infusion valve 13 on the container body 30 is located between the l...

Embodiment 2

[0059] see figure 2 , the method for wastewater treatment of the present invention, comprises the steps:

[0060] 1. Independently set up a photochemical generator and a photochemical reaction pool, add light-assisted heterogeneous Fenton reaction reagents into the generator, and input wastewater into the generator;

[0061] 2. Apply the light-assisted heterogeneous Fenton reaction to treat the wastewater in the photochemical generator, and input the wastewater treated by the light-assisted heterogeneous Fenton reaction in the photochemical generator into the photochemical reaction pool;

[0062] 3. The irradiation of ultraviolet light in the photochemical reaction tank makes the photochemical reaction continue, and the waste water treated by further photochemical reaction in the photochemical reaction tank is input into the generator; and

[0063] 4. Cycle steps 2-3 until the wastewater meets the discharge standard.

[0064] Simultaneously combine figure 1 The photochemic...

Embodiment 3

[0076] This example illustrates the beneficial results produced by the system of Example 1 and the method steps of Example 2 on the treatment of organic wastewater. To treat 10L of basic black dye wastewater with a COD of 520mg / L and a chromaticity of 400 times, when adding 20ml of hydrogen peroxide, the photocatalyst is 0.6g of X zeolite loaded with Fe(III) 4%, and the power of 2 40W UV light, after 6 hours of light, the COD removal rate of the effluent is 94%, and the chroma removal rate is 99%.

[0077] The description of Example 3 is only a preferred example of the photochemical reaction-based organic wastewater treatment method of the present invention, and is not intended to limit the present invention to be implemented in this way.

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Abstract

A system and a method for processing waste water based on photochemical reaction are provided. The system processing waste water comprises at least one photochemical generator and a photochemical reaction pool, wherein the photochemical generator provided with a photo-assisted heterogeneous Fenton reaction zone and the photochemical reaction pool provided with an ultraviolet radiation zone are connected in series and a waste water circular flowing system is arranged between the photochemical generator and the photochemical reaction pool, and the waste water flowing path of the waste water circular flowing system passes through the photo-assisted heterogeneous Fenton reaction zone of the photochemical generator and the ultraviolet radiation zone of the photochemical reaction pool. In the water processing method, waste water circularly flows by the photochemical generator and photochemical reaction pool to efficiently and rapidly process the waste water.

Description

technical field [0001] The present invention relates to a wastewater treatment system and a water treatment method, in particular to a photochemical reaction-based wastewater treatment system and a water treatment method. Oxygen organic wastewater treatment and pretreatment. Background technique [0002] With the rapid development of industry and agriculture, the pollution of water environment is becoming more and more serious, and a large number of toxic and harmful organic pollutants are endangering the ecological environment and human health. For organic wastewater with increasingly complex chemical composition, traditional wastewater treatment technologies such as adsorption, filtration, neutralization, coagulation, redox and other basic physical and chemical methods are difficult to treat in depth, and indicators such as COD and TOC are very low. Difficult to meet national standards. Although biochemical methods have achieved certain results in treating wastewater, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/08C02F1/72C02F1/32
Inventor 白妮郭城
Owner 白妮
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