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Method for degrading organic wastewater by means of lithium cobalt phosphate active hydrogen monosulfate

A technology of bisulfate and organic wastewater, applied in chemical instruments and methods, chemical/physical processes, special compound water treatment, etc., can solve the problems of environmental secondary pollution, increase treatment costs, cobalt ions cannot be recycled, etc. Achieve the effects of reducing the cost of acid-base adjustment, short reaction time, and easy recycling and reuse

Active Publication Date: 2016-08-31
山东润兴环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Problems in the prior art: in the cobalt ion activated monopersulfate reaction system, the existing cobalt ion cannot be recycled, causing secondary pollution to the environment and increasing the processing cost

Method used

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  • Method for degrading organic wastewater by means of lithium cobalt phosphate active hydrogen monosulfate
  • Method for degrading organic wastewater by means of lithium cobalt phosphate active hydrogen monosulfate
  • Method for degrading organic wastewater by means of lithium cobalt phosphate active hydrogen monosulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Comparison of the removal rate of DEP in organic wastewater under three methods.

[0045] (1) Add lithium cobalt phosphate and potassium monopersulfate:

[0046] In the heterogeneous reaction of potassium monopersulfate catalyzed by lithium cobalt phosphate, an Erlenmeyer flask was used as a reactor to treat 200 mL of organic wastewater with an initial concentration of DEP of 5.0 mg / L. After adding 300mg / L potassium monopersulfate to the reaction bottle, the pH is 3.5, then add 100mg / L lithium cobalt phosphate, and place the reaction bottle in a vibrating shaker with a rotation speed of 180rpm and a temperature of 25°C.

[0047] (2) Add lithium cobalt phosphate alone, do not need to add potassium monopersulfate, and other conditions are the same as (1).

[0048] (3) Potassium monopersulfate is added separately, no need to add lithium cobalt phosphate, and other conditions are the same as (1).

[0049] The removal rates of DEP in organic wastewater obtained under the t...

Embodiment 2

[0055] The effect of different dosages of lithium cobalt phosphate on the removal rate of DEP.

[0056] (1) In the heterogeneous reaction using lithium cobalt phosphate to catalyze the activation of potassium monopersulfate, an Erlenmeyer flask is used as a reactor to treat 200 mL of organic wastewater with an initial concentration of DEP of 5.0 mg / L, and add single pass Potassium bisulfate, pH is 3.5, simultaneously adds cobalt lithium phosphate to obtain organic wastewater solution in reaction flask, makes the concentration of potassium monopersulfate and cobalt lithium phosphate in organic wastewater solution be 300mg / L and 50mg / L respectively , and finally the reaction bottle was placed in a vibrating shaker with a rotation speed of 180 rpm and a temperature of 25°C.

[0057] (2) Only when adding lithium cobalt phosphate, adjust the dosage of lithium cobalt phosphate so that the final concentration in the organic wastewater solution is 100mg / L, and other conditions are the...

Embodiment 3

[0067] Effects of different dosages of potassium monopersulfate on activation and degradation of DEP.

[0068] (1) In the heterogeneous reaction using lithium cobalt phosphate to catalyze the activation of potassium monopersulfate, an Erlenmeyer flask is used as a reactor to treat 200 mL of organic wastewater with an initial concentration of DEP of 5.0 mg / L, and add single pass Potassium bisulfate, pH is 4.2, simultaneously in reaction bottle, add lithium cobalt phosphate to obtain organic wastewater solution, make the concentration of potassium monopersulfate and lithium cobalt phosphate in organic wastewater solution be 100mg / L and 50mg / L respectively , and finally the reaction bottle was placed in a vibrating shaker with a rotation speed of 180 rpm and a temperature of 25°C.

[0069] (2) Only when adding potassium monopersulfate, adjust the dosage of potassium monopersulfate so that the final concentration in the organic wastewater solution is 550mg / L, and the other conditi...

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Abstract

The invention discloses a method for degrading organic wastewater by means of lithium cobalt phosphate active hydrogen monosulfate. According to the method, lithium cobalt phosphate serves as a heterogeneous catalyst, cobalt active central ions of lithium cobalt phosphate are fully used to activate hydrogen monosulfate to generate high-oxidizing-property sulfate radicals and hydroxyl radicals, and accordingly organic pollutants difficult to degrade in water are removed. The method is suitable for treatment of various organic wastewater, high in efficiency, good in persistence and convenient to operate, and can efficiently remove toxic and harmful pollutants in wastewater in a wide pH range. Besides, the catalyst can be recycled, secondary pollution is not caused, and a broad prospect is provided for treatment of toxic, harmful and non-biodegradable organic wastewater.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to an advanced oxidation water treatment technology using lithium cobalt phosphate material as a highly efficient heterogeneous catalyst to activate monopersulfate. Background technique [0002] With the rapid development of the world's economy and industry, the problem of environmental pollution has become increasingly prominent, seriously threatening the ecological environment and human health. Therefore, technologies and methods to strengthen environmental pollution control are emerging. Activation of monopersulfate produces sulfate radicals (SO 4 -· ) and hydroxyl radical (OH·) advanced oxidation technology, as an efficient organic wastewater treatment method, has attracted more and more attention and attention of researchers because of its good oxidative degradation potential for persistent organic pollutants. [0003] SO 4 -· It can be produced ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/72B01J27/185
CPCB01J27/1853C02F1/66C02F1/725C02F9/00C02F2305/02C02F2305/023
Inventor 马邕文林学明万金泉王艳
Owner 山东润兴环保科技有限公司
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