Method of removing micro organic pollutants in water

Abstract

The invention discloses a method of removing micro organic pollutants in water. The method comprises the following steps: adding potassium permanganate and activated-carbon-loaded iron-based medicaments into the water containing micro organic pollutants to treat for 20 minutes to 2 hours, wherein the adding amount of the potassium permanganate is 0.5-10mg / L, the adding amount of the activated-carbon-loaded iron-based medicaments is 5-30mg / L. The method of removing micro organic pollutants in water disclosed by the invention is high in removal rate of micro organic pollutants, and capable of increasing the removal rate of the micro organic pollutants by 40%-800% in comparison with an independent potassium permanganate oxidizing process. Moreover, disinfection by-products are not produced in a reaction process, the catalyst is safe and harmless. The method is simple to operate, small in investment and low in operation cost.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for removing trace organic pollutants in water. Background technique [0002] Water sources continue to be polluted, and drinking water standards are becoming more and more stringent, making the problem of drinking water decontamination more and more arousing people's attention. Conventional drinking water treatment processes have been difficult to meet people's water quality requirements. Domestic and foreign experimental research and actual production results have shown that conventional coagulation, sedimentation, filtration, and disinfection processes for polluted source water can only remove trace organic pollution in water. 20%-30% of the substance, and the presence of soluble trace organic pollutants is not conducive to destroying the stability of the colloid, so that the removal effect of the conventional treatment process on the turbidity of ...

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Problems solved by technology

[0005] The application number is CN200910071693.2, and the Chinese patent application titled "Method for Removing Trace Organic Pollutants in Water by Catalytic Oxidation of Potassium Manganate" discloses a method for removing trace organic pollutants in water. The catalyst used contains Fe( II), Fe(III), iron oxyhydroxide, iron oxide, among which Fe(II) and Fe(III) catalysts form a uniform solution with water after being added into the water body, so that the used catalyst cannot be recovered and Utilization, at present, there is no research or invention related to the application of activated carbon-supported iron-based agents to enhance the oxidation of potassium permanganate in neutral or near-neutral water environments

[0006] The application number is CN201110150251.4, and the Chinese patent application titled "A method for removing micro-pollutants in water by oxidizing potassium permanganate catalyzed by ruthenium" discloses a method for removing trace organic pollutants in water. By adding ruthenium catalyst, It can increase the reaction rate and strengthen the treatment effect; although the catalytic process has achieved a good catalytic effect, because ruthenium is a noble metal, the catalytic cost is very high, and there are still few studies on the toxicity of ruthenium, so it is applied to water The security of the processing field is still to be investigated

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