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Method and equipment for mineralizing and degrading organic wastewater

A technology for organic wastewater and organic compounds, which is applied in light water/sewage treatment, oxidized water/sewage treatment, added substance water/sewage treatment, etc. problem, to achieve the effect of low cost, low maintenance cost and few processing units

Inactive Publication Date: 2010-02-24
武钦佩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 and equipment for mineralizing and degrading organic wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The wastewater treated in this embodiment is an aqueous solution containing dinitrotoluene, and the content of dinitrotoluene is 30 mg / L. Select 1.5 grams of nanoscale platinum and 10 mL of hydrogen peroxide, and treat 2 liters of wastewater. First, waste water is added to the treatment equipment through the water inlet pipe 14, and then the catalyst is added into the waste water through the water inlet pipe 14; the air pump 10 is started, the light source is turned on to make the quartz tube and the ultraviolet lamp 5 emit light; the organic matter in the waste water begins to be degraded, and the waste gas is discharged from the top pipe discharge. 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 pipe 8 and valve 7 at the bottom. The content of dinitrotoluene after treatment was ...

Embodiment 2

[0035] The wastewater treated in this embodiment is the same dinitrotoluene-containing aqueous solution as in Example 1, and the content of dinitrotoluene is 30 mg / L. 1.5 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.

[0036] The content of dinitrotoluene after treatment was 1.4mg / 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

[0038] The wastewater treated in this embodiment is the same dinitrotoluene-containing aqueous solution as in Example 1, and the content of dinitrotoluene is 30 mg / L. A combination of 1.5 grams of nano-scale silver and ozone is used as a catalyst, and the amount of wastewater treated is 2 liters. Processing method is identical with embodiment 1.

[0039] 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 and equipment for mineralizing and degrading organic wastewater, and belongs to the fields of chemical industry and environment. The equipment comprises a catalyst and wastewater treatment equipment which uses the catalyst. The catalyst for treating the wastewater comprises elementary substances such as palladium, rhodium, manganese, cobalt, copper, potassium, silver, lanthanum, iron, nickel, tungsten, ruthenium, titanium, cerium, sodium, osmium, gold, platinum, calcium, oxygen, bismuth and the like and oxide, superoxide, hyperoxide, halide, nitrate, sulfate,nitrite, carbonate, hydroxide, phosphate and the like thereof; the catalyst also comprises ozone, hydrogen peroxide, oxygen, sodium superoxide, sodium dioxide, calcium peroxide and calcium superoxide,and can be separately used or combined for use; and the dosage of the catalyst is 0.01g to 100Kg / ton. The wastewater treatment equipment mainly comprises a container, a water inlet pipe, a water outlet pipe, a valve, an ultraviolet lamp, a quartz tube, an aerator and an air pump. The catalyst and the wastewater are added into the container of the water treatment equipment through the water inletpipe at the top of the water treatment equipment; and the organic wastewater is treated through lighting catalysis. The method for treating the organic wastewater does not produce silt, and secondarypollutants. The equipment is simple and easy for operation.

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): C02F1/68C02F1/72C02F1/32
Inventor 武钦佩
Owner 武钦佩
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