Method for removing trace pollutants in water by intensified PMS (phosphate monoester starch) composite technology

A technology of trace pollutants and composite process, which is applied in the field of strengthening PMS composite process to remove trace pollutants in water, which can solve the problems of low pollutant removal rate and achieve the effect of improving pollution removal effect, removal rate and simple process

Inactive Publication Date: 2011-08-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention solves the problem of low pollutant removal rate in the existing PMS composite process; and provides a method for strengthening the PMS composite process to remove trace pollutants in water

Method used

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  • Method for removing trace pollutants in water by intensified PMS (phosphate monoester starch) composite technology
  • Method for removing trace pollutants in water by intensified PMS (phosphate monoester starch) composite technology
  • Method for removing trace pollutants in water by intensified PMS (phosphate monoester starch) composite technology

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specific Embodiment approach 1

[0013] Specific embodiment one: in this embodiment, the method for strengthening the PMS composite process to remove trace pollutants in water is completed according to the following steps: add potassium peroxymonosulfate and strengthening agent to the water containing trace pollutants and add ultraviolet radiation Irradiation, laser irradiation or pyrolysis, and then stir and react evenly; that is, the removal of trace pollutants in water is completed; the dosage of potassium peroxymonosulfate is 1.5mg / L~1.5g / L, and the dosage of enhancer 0.1mg / L~1g / L, the strengthening agent is sodium hydroxide, potassium hydroxide, calcium hydroxide, ammonia water, sodium oxide, potassium oxide, calcium oxide, lithium oxide, sodium carbonate, sodium bicarbonate, potassium carbonate , potassium bicarbonate, ammonium carbonate or a combination of several of them.

[0014] When the strengthening agent described in this embodiment is a composition, each strengthening agent is mixed in any ratio...

specific Embodiment approach 2

[0016] Embodiment 2: This embodiment differs from Embodiment 1 in that: the dosage of the enhancer is 10 mg / L-0.5 g / L. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the light source for the ultraviolet irradiation is a low-pressure mercury lamp, a medium-pressure mercury lamp, a low-pressure amalgam ultraviolet lamp, a xenon lamp, a halogen lamp or a vacuum ultraviolet lamp. supply. Other steps and parameters are the same as those in Embodiment 1 or Embodiment 2.

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Abstract

The invention relates to a method for removing trace pollutants in water by an intensified PMS composite technology, belonging to the field of water treatment. The method increases the removal rate of pollutants by the intensified PMS composite technology. The method for removing trace pollutants in water by the intensified PMS composite technology comprises the following steps: adding potassium hydrogenperoxomonosulphate and a reinforcer to water containing trace pollutants, in addition, carrying out ultraviolet irradiation, laser irradiation or thermal decomposition, and finally evenly stirring the mixture so as to lead the mixture to react, thereby removing the trace pollutants in water. Compared with the PMS composite technology, the method can increase the removal rate of the pollutants by 5% to 50%.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a method for strengthening a PMS composite process to remove trace pollutants in water. Background technique [0002] At present, with the increasing water pollution and the improvement of water quality indicators, the effluent of traditional coagulation sedimentation and filtration processes can no longer fully meet the water quality indicators of drinking water. At present, advanced oxidation technology using hydroxyl radicals as active species is used as a follow-up advanced treatment technology for traditional processes to improve the effluent quality of water treatment processes. [0003] Potassium peroxymonosulfate (PMS) is an environmentally friendly agent. It can be excited by metal ions or energy to produce hydroxyl radicals and sulfate radicals. Hydroxyl radicals and sulfate radicals have high redox potentials, 2.7V and 2.43V, respectively, which can effecti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/32C02F1/30C02F1/72C02F1/02
Inventor 马军关英红李旭春方晶云陈丽玮
Owner HARBIN INST OF TECH
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