Water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis

A technology of persulfate and peroxodisulfate, applied in the field of water pollution control, can solve the problems of no industrial application potential, high energy consumption, high energy, save economic cost and time cost, low operating cost, sterilization wide range of effects

Inactive Publication Date: 2019-10-11
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current common method is to activate persulfate to produce SO 4 •− High input energy is required, large energy consumption, and does not have the potential for industrial application from an economic point of view

Method used

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  • Water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis
  • Water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis
  • Water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis

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specific Embodiment approach 1

[0019] Specific embodiment one: this embodiment is a kind of water treatment method that utilizes ultraviolet synergistic persulfate to catalyze ozone, is specifically carried out according to the following steps:

[0020] Add persulfate mixture to the ozone contact reactor with water to be treated, then discharge high-purity oxygen through the ozone generator to generate ozone, pass through the ozone concentration detector and then pass into the ozone contact reactor, so that the initial concentration of ozone is 5mg / L, and the molar ratio of ozone to persulfate is 1:4; the reactor is equipped with a stirrer and a microporous aeration head to ensure that the ozone and the substrate are evenly distributed in the solution, and the water to be treated is in the ozone contact reactor The residence time is 15min, and the ozone contact reactor is used to ensure the maximum utilization rate of ultraviolet under closed dark conditions, and the ultraviolet lamp is turned on to complete...

specific Embodiment approach 2

[0027] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the persulfate is persulfate and / or peroxodisulfate, wherein the persulfate is potassium persulfate, persulfuric acid One of sodium, calcium peroxymonosulfate and magnesium peroxomonosulfate, and the peroxodisulfate is one of potassium peroxodisulfate and sodium peroxodisulfate. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and one of the specific embodiments one to two is: the persulfate is a mixture of persulfate and / or peroxodisulfate, wherein the persulfate is potassium persulfate , sodium persulfate, calcium persulfate and magnesium persulfate, and the peroxodisulfate is a mixture of one or more of potassium peroxodisulfate and sodium peroxodisulfate. Others are the same as the specific embodiment 1 to 2.

[0029] In the present embodiment, when the peroxymonosulfate is a mixture of some of them, they are mixed in any ratio. In the present embodiment, when the peroxodisulfate is a mixture of some of them, it is mixed in an arbitrary ratio. In the present embodiment, when peroxymonosulfate and peroxodisulfate are one of them, they are mixed in an arbitrary ratio. In this embodiment, when the permonosulfate and the peroxodisulfate are mixtures of several kinds, the mixture is mixed in any ratio, and the permonosulfate a...

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Abstract

The invention provides a water treating method utilizing ultraviolet rays to synergize with persulphate in ozone catalysis. An embodiment of the water treating method includes: enabling high-purity oxygen to produce ozone by discharging an ozone generator; enabling the ozone to pass through an ozone concentration detector and then enter an ozone contact reactor; ensuring the ozone and a matrix tobe uniformly distributed in a solution through a magnetic stirrer and a microporous aerating head; adding a certain amount of the persulphate into a reaction matrix at one time; and decomposing the rest ozone through an ozone decomposer which is connected with the reactor externally. By the aid of an advanced combined oxidization technology utilizing the ultraviolet rays to synergize with the persulphate in ozone catalysis, atrazine in different water body conditions can be removed efficiently and quickly, and pollutants can be completely mineralized into H2O and CO2 in a short time; by introducing the ultraviolet rays, on one hand, decomposing efficiency and mineralizing efficiency of the ozone are improved, on the other hand, wastewater can be sterilized and disinfected, cost on water treatment is saved, and accordingly the water treating method can be applied to treatment of micro organic pollutants in drinking water, recycled water and even industrial wastewater in the future.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a water treatment method utilizing ultraviolet light and persulfate to catalyze ozone. Background technique [0002] As a strong oxidant, ozone has a promising application prospect in the treatment of toxic and harmful pollutants, decolorization of wastewater, and disinfection and sterilization. However, ozone oxidation treatment of wastewater has low ozone utilization efficiency, high treatment costs, and low mineralization of micro-pollutants. And the intermediate products generated by decomposition will prevent the further oxidation of ozone and other problems. Adding a solid catalyst in the ozone oxidation process is an effective method to improve the removal rate of refractory pollutants, but after the reaction, some metal ions are dissolved out, resulting in a decrease in catalyst activity and further environmental pollution. It is necessary to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/32C02F1/78C02F101/30
CPCC02F1/32C02F1/725C02F1/78C02F2101/30C02F2303/04C02F2305/023
Inventor 袁向娟夏东升孙磊吴广宇余晓萍刘洁
Owner WUHAN TEXTILE UNIV
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