Method for processing organic wastewater by inorganic peroxide

A technology for inorganic peroxides and organic wastewater, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, adsorbed water/sewage treatment, etc. It can solve problems such as hindering the application of persulfate technology, harsh operating conditions, and complex systems. , to achieve good results, no secondary pollution, and broad application prospects.

Inactive Publication Date: 2010-07-14
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the method for activating persulfate by heat, light and transition metal ions is complicated, the operating conditions are harsh, and the cost is high, which hinders the application of persulfate technology in organic wastewater treatment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Coal-based granular activated carbon and potassium hydrogen persulfate (KHSO 5 ) in conjunction with the processing example of the golden orange II solution

[0012] Put 250mL of golden orange II solution with a concentration of 20mg / L into a reaction vessel filled with 1g / L activated carbon, add 1.022g of potassium hydrogen persulfate (molar ratio to golden orange II is 100:1), mix and shake for 5 hours, and then discharge the treated wastewater out of the reaction vessel.

[0013] Experimental results:

[0014] Reaction time

[0015] Potassium peroxomonosulfate has a 14% discoloration rate to golden orange II solution within 5 hours; gac has a 19% discoloration rate to golden orange II solution within 5 hours; Use, the golden orange II solution fade rate reaches 85% within 5 hours. Potassium monopersulfate and activated carbon are combined to treat the golden orange II solution, and the reaction rate is significantly accelerated, and the treatment effect ...

Embodiment 2

[0017] Granular activated carbon and sodium persulfate (Na 2 S 2 o 8 ) in conjunction with the processing example of the golden orange II solution

[0018] Put 250mL of golden orange II solution with a concentration of 20mg / L into a reaction vessel filled with 1g / L activated carbon, add 0.34g sodium peroxodisulfate (100:1 molar ratio to golden orange II), mix and shake for 5 hours , and then discharge the treated wastewater out of the reaction vessel.

[0019] Experimental results:

[0020] Reaction time

[0021] Reaction time

[0022] The discoloration rate of sodium peroxodisulfate to golden orange II solution was 5% within 5 hours; the discoloration rate of activated carbon to golden orange II solution within 5 hours was 29%; sodium peroxodisulfate and fruit shell granular activated carbon were used in combination, The golden orange II solution fade rate reached 94% within 5 hours. Sodium peroxodisulfate and fruit shell granular activated carbon com...

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PUM

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Abstract

The invention relates to a method for processing organic wastewater by inorganic peroxide, which is characterized in that the peroxide (peroxy-monosulfate and peroxodisulphates) can be used for efficiently and fast degrading persistent organic pollutants in water with active carbon as the catalyst. The invention is characterized in that when reaction is carried out at normal temperature, the reaction conditions are moderate, no extra energy is needed, no secondary pollution is generated and good effect is enjoyed in wiping off the persistent organic pollutants in water.

Description

technical field [0001] The invention belongs to the organic wastewater treatment technology, in particular to a method for treating refractory organic wastewater with an inorganic peroxide. Background technique [0002] Treatment methods for refractory organic wastewater include physical, chemical and biological methods. Biological treatment methods are widely used in wastewater treatment due to the advantages of simple equipment and low operating costs. However, the equipment occupies a large area and the treatment cycle is long. Especially for some refractory organic substances, it is difficult to achieve good treatment by ordinary biological methods. The treatment effect requires the domestication of special strains, and the treatment is more complicated. However, traditional physical and chemical methods such as flocculation and gas stripping only transfer pollutants from liquid phase to solid phase or gas phase, and do not completely eliminate organic pollutants, resul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/28C02F101/30
Inventor 杨世迎杨鑫邵雪停张文义张聪秦跃晨王雷雷
Owner OCEAN UNIV OF CHINA
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