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Optic-electronics integrated device for treating organic wastewater through catalytic oxidation

A technology of organic wastewater and catalytic oxidation, which is applied in the directions of oxidized water/sewage treatment, water/sewage treatment, light water/sewage treatment, etc. The effect of efficiency

Inactive Publication Date: 2010-04-07
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, many scholars have carried out research on electrochemically assisted photocatalytic methods, but all adopt noble metal plate systems such as gold, ruthenium, palladium, platinum, etc. 2007), but these plates have the disadvantages of high cost and incapable of large-scale industrial application

Method used

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  • Optic-electronics integrated device for treating organic wastewater through catalytic oxidation
  • Optic-electronics integrated device for treating organic wastewater through catalytic oxidation

Examples

Experimental program
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Effect test

Embodiment 1

[0019] Use the optoelectronic integrated treatment device of the present invention to treat various scale inhibitors and dispersants, corrosion inhibitors, bactericides and other medicament production wastewater in Tianjin Chemical Industry Research and Design Institute. Under the voltage condition of 10.0V, the COD is 404mg / L when the photoelectric catalytic reaction is 2h Reduction to 38mg / L, the removal rate is 91%, which is higher than the 42% and 33% of ordinary photocatalysis and electrocatalysis, even higher than the sum of the two, and the photoelectric synergy shown by the photoelectric integrated reactor is higher than the separate effects of the two.

Embodiment 2

[0021] Use the photoelectric integrated treatment device of the present invention to treat the water after air flotation treatment in an asphalt plant. Under the voltage condition of 20.0V, the photoelectric catalytic reaction takes 3 hours, and the COD is reduced from 650mg / L to 192mg / L, and the removal rate is 70%. It is higher than 31% and 28% of ordinary photocatalysis and electrocatalysis; the oil content is reduced from 42mg / L to 2mg / L, and the removal rate is 95%, which is higher than 49% and 42% of ordinary photocatalysis and electrocatalysis. high.

Embodiment 3

[0023] Using the photoelectric integrated treatment device of the present invention to treat the secondary biochemical effluent of coking wastewater in a steel factory, under the condition of 20.0V voltage, the photoelectric catalytic reaction takes 2 hours, and the COD is reduced from 236mg / L to 38mg / L, and the removal rate is 84%. It is higher than 41% and 32% of ordinary photocatalysis and electrocatalysis; the phenol content is reduced from 32mg / L to 0.6mg / L, and the removal rate is 98%, which is higher than 57% and 32% of ordinary photocatalysis and electrocatalysis average high.

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Abstract

The invention discloses an optic-electronics integrated device for treating organic wastewater through catalytic oxidation, which is characterized in that: a water inlet pipe (1), an aeration device (2), an air dispersion plate (3), an anode (4), a cathode (5), a catalyst filler (6), a light source system (7), a direct-current power supply (8) and a water outlet pipe (9); in the electrocatalysis aspect, a negative electrode is a stainless steel screen, a catalyst is filled in the screen, and a positive electrode (4) is a silicon carbide rod; in the photocatalysis aspect, an ultraviolet lamp system is adopted to serve as the light source system (7); persistent organic wastewater enters the optic-electronics integrated device through the water inlet pipe (1) for photoelectrocatalysis treatment; the aeration device (2) is opened to aerate the persistent organic wastewater through the air dispersion plate (3) so as to supplement oxygen to facilitate oxidation and fully stir the persistent organic wastewater to make the treated wastewater even; the waste water stays for 1 to 4 hours in the device; and water after the treatment is discharged through the water outlet pipe (9).

Description

technical field [0001] The present invention relates to the technical field of organic wastewater treatment, and specifically refers to a photoelectric integrated device for catalytic oxidation treatment of organic wastewater. Processing or deep processing fields. Background technique [0002] Photoactivation of photogenerated holes on the valence band of semiconductors (usually using TiO2) (FujishimaA, Honda K, Nature, 1972, 238: 37-38; Matthews R.W.J. Catal. 1988, 111: 264-272; Ollis D F, A1-EkabiH. Amsterdam: Elsevier, 1993), producing OH radicals with strong oxidizing ability in water (standard electrode potential 2.80eV), which can completely mineralize organic pollutants that are difficult to degrade in water, and have almost no selectivity for the substrate. The degradation process It can be carried out under normal temperature and pressure, without adding any chemical agents, and without secondary pollution. This method has become the research frontier and developme...

Claims

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Application Information

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IPC IPC(8): C02F9/08C02F1/461C02F1/32C02F1/66C02F1/74
Inventor 滕厚开谢陈鑫赵慧郑书忠陈永生陈军
Owner CHINA NAT OFFSHORE OIL CORP
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