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Novel photoelectric coupling wastewater-treating system

A wastewater treatment system and optoelectronic coupling technology, which are applied in special compound water treatment, light water/sewage treatment, magnetic/electric field water/sewage treatment, etc. Achieving the effect of avoiding electrode scaling, stable purification effect, and ensuring up-to-standard discharge

Pending Publication Date: 2019-08-30
NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patented conductive particles are difficult to clean and recycle after they fail
Patent authorization publication number CN207998477U discloses a three-dimensional electrocatalytic sewage treatment device, which integrates three-dimensional electrode electrolysis, flocculation and precipitation, and improves mass transfer effect and current efficiency. However, this patent does not take into account the problem of device pollution. High printing and dyeing wastewater, often a single treatment method cannot make it meet the standard, and multiple treatment methods need to be coupled to achieve stable discharge standards

Method used

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Effect test

Embodiment 1

[0037] use as figure 1 A new photoelectric coupling wastewater treatment system is shown to treat a surrounding organic wastewater. The wastewater quality indicators: CODcr is 868mg / L, SS is 115mg / L, chromaticity is 800 times, and PH is 8.6. The dosage of the particle electrode is 100mg / L, and the current density is 10mA / cm 2 , the aeration intensity is 1L / min. The removal rate of COD reaches 89%, and the removal rate of chroma reaches 96%, reaching the discharge standard of water pollutants in the textile dyeing and finishing industry.

Embodiment 2

[0039] use as figure 1 A new type of photoelectric coupling wastewater treatment system is shown to treat a certain surrounding organic wastewater. The wastewater quality indicators: CODcr is 1100mg / L, SS is 200mg / L, and the chromaticity is 680 times. Current density 20mA / cm 2 , the aeration intensity is 2L / min, and the particle electrode dosage is 300mg / L. The removal rate of COD reaches 91%, and the removal rate of chroma reaches 95%, reaching the discharge standard of water pollutants in textile dyeing and finishing industry.

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Abstract

The invention discloses a novel photoelectric coupling wastewater-treating system. The system includes a pre-treatment device, a three-dimensional electrode catalysis oxidizing device, an enhanced photocatalytic device and an acid bath pool, wherein the pre-treatment device is communicated with the three-dimensional electrode catalysis oxidizing device; the three-dimensional electrode catalysis oxidizing device is respectively communicated with the enhanced photocatalytic device and the acid bath pool. A pre-treatment system includes a dosing device, a coagulating and settling device and a stirring device, wherein the dosing device and the stirring device are arranged above the coagulating and settling device; a valve and a water pump are arranged between the three-dimensional electrode catalysis oxidizing device and the pre-treatment device; the three-dimensional electrode catalysis oxidizing device is internally filled with particulate electron. The novel photoelectric coupling wastewater-treating system disclosed by the invention has the advantages of reasonable design and stable and efficient purifying effect. Wastewater can be treated through continuous operation of the system. The system can wash, recycle and utilize expired conductive particle electrode materials.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a novel photoelectric coupling wastewater treatment system and method. Background technique [0002] Printing and dyeing wastewater has the characteristics of high chroma and high concentration of organic matter. It is a difficult-to-treat industrial wastewater. About 1 million tons of dyes are produced in the world every year. With the development of industrialization, this number is still rising. In addition. Printing and dyeing wastewater is extremely harmful to the water body, which will lead to the death of microorganisms, animals and plants in the water body, resulting in the deterioration of the water body. Traditional wastewater treatment technologies, such as adsorption and membrane filtration, cannot completely remove pollutants and cause secondary pollution, which cannot meet the increasingly high environmental protection requirements. Advanced oxidation ...

Claims

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Application Information

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IPC IPC(8): C02F9/12
CPCC02F9/00C02F1/52C02F1/66C02F1/48C02F1/001C02F1/44C02F1/4672C02F1/30C02F2305/10
Inventor 徐斌许雪婷汪龙眠张毅敏张书陵皋海岭
Owner NANJING INST OF ENVIRONMENTAL SCI MINIST OF ECOLOGY & ENVIRONMENT OF THE PEOPLES REPUBLIC OF CHINA
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