Processing method of explosive wastewater

A technology of explosive waste water and treatment method, which is applied in water/sewage treatment, special compound water treatment, light water/sewage treatment, etc. It can solve the problems of large waste water discharge, non-biodegradable and difficult biodegradable, etc., and achieves convenient maintenance , low cost, stable chemical properties

Active Publication Date: 2016-09-14
HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Hazards of explosive wastewater: TNT/RDX explosive industrial wastewater has a large discharge volume, complex composition, high toxicity, and is generally difficult to biodegrade, or even non-biodegradable
The wastewater

Method used

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  • Processing method of explosive wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Preparation of Copper-Cerium Modified Titanium Dioxide Catalyst

[0037] 1. Preparation of ceramsite carrier

[0038] Take 2.0kg of sludge, 1.0kg of clay, 1.0kg of kaolin, 1.0kg of fly ash, and 0.2kg of water glass, and mix them well to form The columnar ceramsite blank is heated in a high-temperature furnace at a temperature of 10°C to 500°C, pre-fired at a constant temperature for 30 minutes, then raised to 1100°C at a rate of 5°C / min, sintered for 20 minutes, and cooled to below 300°C at a rate of 10°C / min. Take out and cool naturally, the appearance of the porous ceramsite carrier is brick red short columnar solid particles. After inspection, there is no leaching of toxic substances, and it has good apparent density and porosity, so it can be used as a catalyst carrier material.

[0039] The surface of the prepared ceramsite ceramics is rough, loose and porous, the particle porosity is as high as 55%, and the specific surface area is 380m 2 / g; stable chemical p...

Embodiment 2

[0046] 1. Measure 1000ml of explosive waste water, adjust the pH value to 4 with 10% dilute sulfuric acid, add potassium persulfate with a molar concentration of 0.2, the amount added is 5% of the waste water, and mix well;

[0047] 2. Put a 259nm ultraviolet lamp in the water, add the copper-cerium-modified titanium dioxide catalyst prepared in Example 1 with 5% waste water, aerate with 30mL / s gas output, react for 6 hours, and the reaction ends. Detect COD, TN, SS, TNT, RDX, DNT content of wastewater;

[0048] The test results are as follows:

[0049] Test items

Embodiment 3

[0051] 1. Measure 1000ml of explosive waste water, adjust the pH value to 2 with 10% dilute sulfuric acid, add potassium persulfate with a molar concentration of 0.15, the amount added is 10% of the waste water, and mix well;

[0052] 2. Put a 259nm ultraviolet lamp in the water, add a copper-cerium-modified titanium dioxide catalyst with 20% waste water, aerate with 40ml of air output, react for 12 hours, and the reaction ends. Detect the COD, TN, SS, TNT, RDX, HMX content of wastewater; the test results are as follows:

[0053] Test items

raw water

after treatment

Removal rate (%)

COD (mg / l) (chemical oxygen demand)

1660

25

98.5

TNT (mg / l) (TNT)

7

not detected

～100

DNT(mg / l)(dinitrotoluene)

6

not detected

～100

RDX(mg / l)(RDX)

2.85

not detected

～100

SS (Suspended Solids)

23

4

82.6

TN (total nitrogen)

128

2.7

97.9

[0054] 3. After the catalyst is used ...

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Abstract

The invention provides a processing method of explosive wastewater. The processing method comprises the following steps: (1) adjusting the pH value of explosive wastewater to 1-4 by acid, adding 0.05 to 0.5 M of persulfate, wherein persulfate accounts for 1 to 10 wt% of explosive wastewater, and evenly mixing; (2) placing an UV lamp in the explosive wastewater or on the surface of explosive wastewater, adding a copper-cerium modified titanium dioxide catalyst accounting for 5 to 30 wt% of explosive wastewater, carrying out aeration at the same time, and carrying out reactions for 2 to 12 hours; wherein the copper-cerium modified titanium dioxide catalyst is prepared by doping titanium dioxide by copper and cerium, and copper and cerium respectively account for 5 to 10 wt% and 10 to 20 wt% of titanium dioxide. The processing technology is simple, the cost is low, the maintenance is convenient, and the explosive wastewater can be recycled only through one step. Moreover, persulfate is taken as the oxidant, no secondary pollution or solid waste is generated; the service life of catalyst is long, and the catalyst can be continuously used and does not need regeneration.

Description

technical field [0001] The invention relates to a treatment method for explosive waste water, which belongs to the technical field of sewage treatment. Background technique [0002] Explosives are an important chemical energy source. They have the characteristics of high energy density and high instantaneous power. Therefore, they are widely used not only in military affairs, but also in industrial and agricultural construction and production. Explosives industry is one of the important sources of pollution in industrial production. Various pollutants are produced in the production process and discharged into the environment in the form of gas, liquid and solid. [0003] The high-energy explosives mainly used in the military are: TNT (TNT), RDX (RDX), and DNT (dinitrotoluene), among which TNT is the most. Explosive wastewater has a large amount of discharge, a large amount of wastewater with complex components, a high pollution load, and the components of pollutants in wast...

Claims

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Application Information

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IPC IPC(8): C02F9/08B01J23/83B01J35/10C02F101/30
CPCB01J23/002B01J23/83B01J35/10B01J35/1019B01J2523/00C02F1/32C02F1/66C02F1/725C02F9/00C02F2101/30C02F2305/023C02F2305/10B01J2523/17B01J2523/3712B01J2523/47
Inventor 贺前锋宋乐山言海燕陈亚利赵迪蔡群欢姚咏歌阙雄杰
Owner HUNAN YONKER ENVIRONMENTAL PROTECTION RES INST
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