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Method for removing pollutant of water with synergistic effect of water treatment agent and microwave

A water treatment agent and synergistic technology, which can be used in light water/sewage treatment, mechanical oscillation water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., which can solve the problems of long reaction time and large amount of oxidant.

Inactive Publication Date: 2007-05-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the existing water treatment method has a long reaction time at room temperature and a large amount of oxidant required to treat pollutants, and proposes a method for removing pollutants in water through the synergistic effect of water treatment agents and microwaves

Method used

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Experimental program
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specific Embodiment approach 1

[0004] Specific implementation mode 1: In this embodiment, water treatment agent and microwave synergistically remove pollutants in water through the following steps: (1) Determination of the content of target pollutants in water; (2) The mass ratio of water treatment agent to target pollutants is 1 ~10:1; (3) Adjust the pH value of the water containing the target pollutants to 7~8; (4) Dissolve the water treatment agent in water and flow it into the machine whose frequency has been adjusted to 915~2450MHz and the power is 100~2000W Carry out irradiation in a microwave reactor, the irradiation time is 5s-20min and keep the temperature of water between 20-100°C; (5) Separating solid and liquid by flocculation or filtration to obtain effluent.

specific Embodiment approach 2

[0005] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the target pollutants in step (1) are organic pollutants and ammonia nitrogen, and organic pollutants include natural organic matter and refractory organic matter. Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0006] Specific embodiment three: the difference between this embodiment and embodiment one is: the water treatment agent in step (two) is ferrate or the mixture of this ferrate and the following one or more agents: aluminum sulfate, trichloro Aluminum chloride, ferric chloride, polyaluminum sulfate, polyaluminum chloride, polyferric, activated silicic acid, polyferric silicate, polyaluminum silicate, polyaluminum iron silicate, zeolite, magnesium oxide, calcium oxide, activated carbon, Powdered activated carbon, ferric sulfate, calcium hypochlorite, sodium hypochlorite, ferrous sulfate, sodium hydroxide, potassium hydroxide, polyacrylamide, nonionic organic polymer, anionic organic polymer, bentonite, kaolin, diatomaceous earth, high manganese Salt and permanganate composite agents, wherein the mass of ferrate accounts for 0.1% to 95% of the total water treatment agent. Other steps are the same as in the first embodiment.

[0007] In this embodiment, the ratios between other...

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Abstract

The invention relates to a way to remove the pollutant in water by water treatment chemical together with the microray. It is a kind of water treating method which solved the problem of long reacting time and large dosage of oxide in treating the water pollutant. It's realized by the following steps: (1)determine the content of the pollutant; (2) the ratio of the water treatment chemical to the pollutant is 1-10:1; (3) adjust the Ph value of the water; (4) treat the polluted water with water treatment chemical as well as microray; (5) separate the solid substance from water to get purified water. Compared to the traditional method, the dosage of the oxide is 30% less in the invention, the removal rate of ammonia nitrogen is 10-60% higher in the invention than the treatment with only ferri-salt; the degradation rate of the natural organic humic acid has been increased by 20-40%; the hard-to-degrade organics (such as nitrobenzene) removal rate has been increased by 30-50%; the invention has many advantages such as low cost and reliable operation it has extensive applying prospect in water treatment domain.

Description

technical field [0001] The invention relates to a method for removing pollutants in water. Background technique [0002] With the rapid development of industry and the improvement of human material living standards, the pollution of water environment is becoming more and more serious, and the control of water pollution is urgent. The oxidation method is a commonly used method in existing water treatment, that is, the use of ozone, permanganate, chlorine dioxide, hydrogen peroxide, ultraviolet radiation and other means to remove organic pollutants in water, but some organic pollutants in water are very stable. With the above method, the time required for the reaction at normal temperature is long, and the required amount of oxidizing agent is large. Contents of the invention [0003] The purpose of the present invention is to solve the problems of long reaction time at normal temperature and large amount of oxidant required for treating pollutants in existing water treatme...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/34C02F1/32
Inventor 马军张瑛洁王禄鹏赵伟
Owner HARBIN INST OF TECH
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