Method for purifying pollutant in water by using biological activity carbon-catalysis or activated carbon and oxidation of ozone

A biological activated carbon and ozone oxidation technology, applied in the field of water treatment, can solve the problems of low ozone utilization efficiency, low organic matter removal efficiency, and high treatment cost, and achieve the effects of reducing water treatment costs, good removal effect, and reduced dosage

Inactive Publication Date: 2003-10-08
TSINGHUA UNIV
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of low ozone utilization efficiency, low organic matter removal efficiency and high tre

Method used

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  • Method for purifying pollutant in water by using biological activity carbon-catalysis or activated carbon and oxidation of ozone
  • Method for purifying pollutant in water by using biological activity carbon-catalysis or activated carbon and oxidation of ozone

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: Activated carbon catalyzed ozone oxidation of secondary effluent of urban sewage treatment plant - biological activated carbon purification.

[0019] like figure 1 As shown, the secondary effluent of the urban sewage treatment plant enters from the lower part of the activated carbon catalytic ozone oxidation reactor 100, the ozone gas is introduced from the bottom of the reactor, and the ozone gas passes through the gas distribution plate 102 in the reactor and the water. Uniform mixing; water and ozone gas flow upward through the activated carbon layer 101 filled in the reactor, the residence time is 16min, the organic pollutants in the water are removed or transformed; the water after preliminary treatment flows out from the upper water outlet 104 of the reactor , the ozone tail gas is discharged from the gas discharge port 103 of the reactor;

[0020] The above-mentioned preliminarily treated water flows in from the water inlet 205 on one side of the biol...

Embodiment 2

[0027] Example 2: Activated carbon catalytic ozone oxidation-biological activated carbon method purifies reservoir water containing trace organics.

[0028] Adopt activated carbon catalyzed ozone oxidation-biological activated carbon method to purify reservoir water, and its steps are roughly the same as Example 1, wherein the residence time of the reservoir water to be treated in the activated carbon catalytic ozone oxidation unit is 16min, and the residence time in the biological activated carbon unit is 15min. In the activated carbon catalytic ozone oxidation unit, different doses of ozone can be added according to the treatment target. When the dosage of ozone is 3mg / L, the removal effect of pollutants in water is shown in Table 2.

[0029] The removal rate of total organic carbon (TOC) in water by ozone oxidation-biological activated carbon method was 32.9%, and the TOC removal rate of activated carbon catalytic ozone oxidation-biological activated carbon method was 36.9%...

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Abstract

A process for removing pollutant from water features use of an activated carbon catalytic ozone oxidizing unit and a biologic activated carbon unit, and includes introducing the water to be treated and the ozone to the activated carbon catalytic ozone oxidizing reactor, mixing, flowing up, staying in activated carbon layer for 5-30 min for removing or converting the organic pollutants, flowing inthe biologic activated carbon reactor, and staying for 5-90 min for removing and degradating the organic pollutant. Its advantages are high utilization rate of ozone and high effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a method for removing pollutants in water, in particular to a method for deep purification of water polluted by trace organic matter. Background technique [0002] The problem of trace organic pollution in water is becoming more and more prominent, such as trace natural organics and toxic and harmful synthetic organics in drinking water sources. These natural organics have a great relationship with the generation of disinfection by-products in tap water. For another example, the secondary effluent of the urban sewage treatment plant also contains many kinds of toxic and harmful synthetic organic matter and natural organic matter, which will have a greater impact on the reuse of sewage. Disinfection by-products and trace amounts of endocrine disruptors and persistent organic compounds that may exist in drinking water also have adverse effects on human health. The traditiona...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01J23/34B01J23/72B01J23/745B01J23/755C02F1/78C02F3/10
CPCY02W10/10
Inventor 张彭义祝万鹏李来胜余刚蒋展鹏韩文亚简丽
Owner TSINGHUA UNIV
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