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Processing method of hardly degraded organic substance

A treatment method and a refractory technology, applied in the field of wastewater treatment, can solve the problems of complex treatment, long treatment cycle, secondary pollution, etc., and achieve the effect of mild reaction conditions, short treatment time and good treatment effect

Inactive Publication Date: 2013-12-04
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor biodegradability of such substances (low BOD / COD), it is difficult to achieve good treatment effects by ordinary biological methods, and special strains need to be domesticated, and the treatment cycle is long and 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, resulting in secondary pollution and other problems.

Method used

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  • Processing method of hardly degraded organic substance
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  • Processing method of hardly degraded organic substance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Example 1: CO 3 2- Catalytic potassium hydrogen persulfate treatment of refractory organic wastewater.

[0012] Study on CO with Golden Orange II as a Model Pollutant 3 2- Treatment effect of catalytic potassium peroxymonosulfate in the treatment of refractory organic wastewater. The golden orange II solution was 450 mL with a concentration of 20 mg / L. CO 3 2- The concentration is 0.001mol / L, 0.01mol / L, 0.1mol / L. Golden orange II / molar potassium hydrogen peroxymonosulfate = 1 / 10, and the concentration of golden orange II was detected by sampling at 0.5h, 1h, 2h, 3h and 4h.

[0013] Experimental results:

[0014] Table 1. Different concentrations of CO 3 2- Concentration catalyzed effect of potassium hydrogen peroxymonosulfate on golden orange II.

[0015]

[0016] The results show that CO 3 2- Catalytic potassium hydrogen persulfate can rapidly remove golden orange II, in which CO 3 2- The best effect was obtained when the concentration was 0.001 mol / L...

Embodiment 2

[0017] Example 2: HCO 3 - Ion-catalyzed potassium hydrogen persulfate treatment of refractory organic wastewater.

[0018] Experimental results:

[0019] The effect of bicarbonate ion-catalyzed potassium hydrogen persulfate in the treatment of refractory organic wastewater was studied with golden orange II as a model pollutant. The golden orange II solution was 450 mL, and the golden orange II concentration was 20 mg / L. The bicarbonate ion concentration is 0.01mol / L, 0.1mol / L. Golden orange II / molar potassium hydrogen peroxymonosulfate = 1 / 10, and the concentration of golden orange II was detected by sampling at 0.5h, 1h, 2h, 3h and 4h.

[0020] Experimental results:

[0021] Table 2. Different concentrations of HCO 3 - Treatment effect of catalytic potassium peroxymonosulfate on golden orange II.

[0022]

[0023] The results show that HCO 3 - Catalytic potassium hydrogen persulfate can rapidly remove golden orange II, in which HCO 3 - When the concentration is...

Embodiment 4

[0030] Example 4: Cl - Catalytic potassium hydrogen persulfate treatment of refractory organic wastewater.

[0031] The effect of bicarbonate ion-catalyzed potassium hydrogen persulfate in the treatment of refractory organic wastewater was studied with golden orange II as a model pollutant. The golden orange II solution was 450 mL, and the golden orange II concentration was 20 mg / L. The bicarbonate ion concentration is 0.01mol / L, 0.1mol / L. Golden orange II / molar potassium hydrogen peroxymonosulfate = 1 / 10, and the concentration of golden orange II was detected by sampling at 0.5h, 1h, 2h, 3h and 4h.

[0032] Experimental results:

[0033] Table 4. Different concentrations of Cl- Treatment effect of catalytic potassium peroxymonosulfate on golden orange II.

[0034]

[0035] The results show that Cl - Catalytic Potassium Peroxymonosulfate Can Quickly Remove Golden Orange II, Cl - When the concentration is 0.1mol / L, the effect is the best, and the degradation rate can r...

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Abstract

The invention relates to a processing method of a hardly degraded organic substance, which is characterized in that common anions in waste water are used as catalyst for activating peroxy-monosulfate to process hardly degraded organic waste water. The processing method comprises the following steps of: firstly detecting the concentration of the anions in the waste water and the concentration of the organic substance in the waste water; when the concentration of the anions is within a specified range, adding the peroxy-monosulfate into the waste water according to the concentration of the organic substance in the waste water, and stirring; and after the waste water meets the discharge requirement, discharging the waste water. The processing method has the advantages that the processing method is carried out at normal temperature and under normal pressure, and the reaction condition is mild; the process is simple, energy and the catalyst do not need to be added, equipment does not need to be added, and the investment is little; an environment-friendly medicine is added, and secondary pollution does not occur; no sludge is generated; the processing time is short, and the processing effect is good.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and in particular relates to a CO 3 2- , HCO 3 - , HPO 4 2- , Cl - A method for catalyzing potassium hydrogen persulfate to treat refractory organic wastewater. Background technique [0002] With the development of industry, more and more chemical products are coming out. In these products, many substances will not only seriously pollute the environment, but also difficult to be degraded by microorganisms, such as printing and dyeing wastewater. At present, the treatment methods for such substances mainly include biological methods, physical and chemical methods, and advanced oxidation methods. Due to the poor biodegradability of these substances (low BOD / COD), it is difficult to achieve a good treatment effect by using ordinary biological methods. Special strains need to be domesticated, and the treatment cycle is long and complicated. However, traditional physical and chemical metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72
Inventor 杨世迎王萍杨鑫单良张文义邵雪停牛瑞
Owner OCEAN UNIV OF CHINA