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Method for mineralizing and degrading organic waste water and processing equipment

A technology for organic wastewater and wastewater treatment, which is applied in the directions of oxidized water/sewage treatment, light water/sewage treatment, added substance water/sewage treatment, etc. It can solve the problems of low wastewater treatment efficiency, limited wastewater treatment capacity, and difficulty in scaling up equipment, etc. problems, to achieve the effect of low cost, low maintenance cost, and fewer processing units

Inactive Publication Date: 2010-02-10
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wastewater treatment process of this method is complex, high cost, low efficiency, and the equipment is not easy to scale up, and the wastewater treatment capacity is limited
Patents CN1528513A and CN1508073A propose a fixed-bed photocatalytic reaction device, but this technology has the problems of low wastewater treatment efficiency and difficulty in treating large quantities of wastewater

Method used

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  • Method for mineralizing and degrading organic waste water and processing equipment
  • Method for mineralizing and degrading organic waste water and processing equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The wastewater treated in this embodiment is an aqueous solution containing dinitrotoluene, and the content of dinitrotoluene is 29.80 mg / L. 0.5 grams of nano-scale platinum and 10 mL of hydrogen peroxide are selected, and the amount of wastewater to be treated is 2 liters. First, waste water is added to the treatment equipment through the water inlet pipe 10, and then the catalyst is added to the waste water through the water inlet pipe 10; the circulation pump 9 is started, the light source is turned on to make the quartz tube and the ultraviolet lamp 5 emit light; the power is 10000W; the wavelength is 100-800nm, The organic matter in the wastewater begins to be degraded, and the exhaust gas is discharged from the pipe at the top. Take a water sample at regular intervals, such as every 20 minutes, and measure the content of dinitrotoluene with a high-performance liquid chromatograph. After the COD reaches the standard, the treated water is discharged from the drain ...

Embodiment 2

[0037] The wastewater treated in this embodiment is the same dinitrotoluene-containing aqueous solution as in Example 1, and the content of dinitrotoluene is 29.80 mg / L. 0.5 grams of nano-scale silver and 10 mL of hydrogen peroxide are selected to treat 2 liters of waste water. Processing method is identical with embodiment 1.

[0038] List the content of dinitrotoluene contained in water at different times, and draw the relationship between the content of dinitrotoluene and time, such as figure 2 In the b line shown. The content of dinitrotoluene after treatment was 2.4mg / L. The results show that the catalytic system can effectively degrade dinitrotoluene, and make the content of dinitrotoluene in water lower than the emission standard stipulated by the state.

Embodiment 3

[0040] The wastewater treated in this embodiment is the same dinitrotoluene-containing aqueous solution as in Example 1, and the content of dinitrotoluene is 29.80 mg / L. A combination of 0.5 grams of nano-scale silver and ozone is selected as a catalyst, and the amount of wastewater treated is 2 liters. Processing method is identical with embodiment 1.

[0041] List the content of dinitrotoluene contained in water at different times, and draw the relationship between the content of dinitrotoluene and time, such as figure 2 Shown in line c. The content of dinitrotoluene after treatment was 3.6mg / L. The results show that the catalytic system can effectively degrade dinitrotoluene, and the content of dinitrotoluene in water is lower than the national emission standard.

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Abstract

The invention relates to a method for mineralizing and degrading organic waste water and processing equipment, which belong to the field of chemistry and environment. The method uses a catalyst and waste water treatment equipment using the catalyst. The catalyst for use in waste water treatment comprises simple substances such as palladium, rhodium, manganese, cobalt, copper, potassium, silver, lanthanum, iron, nickel, tungsten, ruthenium, titanium, cerium, sodium, osmium, gold, platinum, calcium, oxygen and bismuth as well as oxides, peroxides, superoxides, halides, nitrates, sulfates, nitrites, carbonates, hydroxides, phosphates and the like of the simple substances, and the catalyst also comprises ozone, hydrogen peroxide, oxygen, sodium superoxide, sodium dioxide, calcium peroxide andcalcium superoxide. The catalyst can be used alone or in combination at a dosage of 0.01 to 60 kilograms per ton. The catalyst and waste water are filled in a container in the water treatment equipment from a water inlet pipe on the top part of the water treatment equipment; and organic waste water is treated by photocatalysis. The method for treating the waste water does not generate silt and secondary pollution. The equipment is simple and easy to operate.

Description

technical field [0001] The invention relates to a catalyst for waste water treatment and waste water treatment equipment using the catalyst, which is used for light-assisted catalytic mineralization and degradation of organic pollutants. Background technique [0002] Organic wastewater pollutes the environment, affects the survival of humans and other organisms, and hinders economic development; controlling pollutant discharge is the guarantee for sustainable economic development. Organic wastewater has brought serious harm to our living environment, especially wastewater containing aromatic nitro compounds and phenolic compounds is highly toxic, difficult to degrade, and has a long residual time, which is deeply harmful to nature; therefore, Europe and the United States have stopped production TNT. Wastewater treatment methods usually include biological treatment, combustion treatment and electro-oxidation. Biological treatment includes aerobic treatment, anaerobic treatm...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F1/68C02F1/32
Inventor 武钦佩张青山李云政
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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