Waste water treatment system

A technology of wastewater treatment system and water injection system, which is applied in the field of wastewater treatment system of plasma technology, can solve problems such as difficult maintenance of equipment, short circuit of discharge circuit, and impossibility of industrial application, so as to eliminate algal microbial pollution, improve B/C ratio, The effect of improving biodegradability

Inactive Publication Date: 2012-08-22
SHANGHAI DISHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology

[0004] In addition, although glow discharge and dielectric barrier discharge have certain applications in the fields of waste gas, malodorous gas, and wastewater treatment, glow discharge plasma belongs to low-pressure discharge technology, which is difficult for continuous production and high production cost, so it cannot be widely used Industrial production is currently limited to laboratories, lighting products and the semiconductor industry; with the development of low-temperature plasma technology and pulse power technology, DC high-voltage narrow pulse discharge technology has become a The field of treatment of high volume and refractory organic wastewater is one of the most promising technologies
However, the DC high-voltage pulse discharge plasma technology belongs to the corona discharge technology, and currently lacks a reliable DC high-voltage pulse power supply and a matching high-efficiency plasma discharge reactor; the diele

Method used

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Examples

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Embodiment 1

[0053] Nitrobenzene wastewater from a pesticide factory, after determination, wastewater COD=310037, BOD 5 =105851, B / C=0.15, pH=8. Treatment process: DC voltage 40000V, discharge frequency 500 times / second, water flow rate 140L / min, quickly pass through the DC high-voltage narrow pulse discharge system, combined with the deep oxidation of the advanced oxidation reaction system 4, the B / C ratio is significantly improved. The processing results are as follows:

[0054]

Embodiment 2

[0056] Phenol wastewater from a pesticide factory B, after determination, wastewater COD = 133085, BOD 5 =105851, B / C=0.1, pH=8. Treatment process: Fe is added to the waste liquid 2+ 40mg / l, DC voltage 50000V, discharge frequency 700 times / s, water flow rate 200L / min, fast through the DC high-voltage narrow pulse discharge system, combined with the deep oxidation of the advanced oxidation reaction system 4, the B / C has been significantly improved. The processing results are as follows:

[0057]

Embodiment 3

[0059] A landfill leachate, COD=55000, treatment process: DC voltage, 48000V, discharge frequency 900 times / second, water flow rate 50L / min, quickly pass through the DC high-voltage narrow pulse discharge system, combined with advanced oxidation reaction system 4 With deep oxidation, the removal rate of COD is significantly improved, and the odor intensity of wastewater after treatment is greatly reduced. The processing results are as follows:

[0060]

[0061] In summary, after being treated by the wastewater treatment system of the present invention, the COD and BOD in the water can be greatly reduced, the amount of sludge produced can be reduced, and favorable conditions are also provided for the subsequent biochemical treatment to reduce the amount of activated sludge, thereby greatly reducing sewage treatment sludge. The amount of mud produced is economical and environmentally friendly.

[0062] And the wastewater treatment system of the present invention also has the...

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Abstract

The invention discloses a waste water treatment system comprising a direct-current high-voltage pulse power supply, a direct-current high-voltage narrow pulse discharge system, a water injection system, an advanced oxidation reaction system, a water discharging system and a master control system, wherein strongly oxidized active substance is generated through the direct-current high-voltage narrow pulse discharge system and reacts with organics in the injected waste water to instantly oxidize the organics, so that macromolecule organics become micromolecule organics, micromolecule organics finally generate dioxide and water, and then the discharge standard is achieved.

Description

technical field [0001] The invention relates to wastewater treatment technology, in particular to a wastewater treatment system based on low-temperature plasma technology. Background technique [0002] The low-temperature ion technology is to load the voltage on the electrode with a small curvature radius. Due to the partial discharge, dense high-energy electrons are generated. During the discharge process, the electrons collide with water molecules, organic molecules, and other molecules, atoms, and particles in the water. The excitation, decomposition and ionization of these neutral molecules are more intense, and the strong oxidizing active species (OH, O, O 3 、H 2 o 2 and other active particles), ultraviolet radiation, high-energy electron bombardment, etc., to achieve the purpose of removing toxic and harmful substances. [0003] At present, commonly used low-temperature plasma technologies include: glow discharge plasma, DC high-voltage pulse discharge plasma, diele...

Claims

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Application Information

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IPC IPC(8): C02F9/12C02F1/72
Inventor 杭鹏志王立锋王雪勤
Owner SHANGHAI DISHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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