Ozone/ultraviolet-biological activated carbon process for removing trace amount of organic matter in water

A technology of biological activated carbon and organic matter, applied in the field of water treatment, can solve the problems of high treatment cost and low efficiency, and achieve the effects of high removal efficiency, improved mass transfer, and improved biodegradable performance

Inactive Publication Date: 2004-11-17
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of low efficiency and high treatment cost in removing trace organic pollutants in water in the prior art, and provide a more effective method for removing pollutants in water, especially trace organic matter

Method used

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  • Ozone/ultraviolet-biological activated carbon process for removing trace amount of organic matter in water
  • Ozone/ultraviolet-biological activated carbon process for removing trace amount of organic matter in water

Examples

Experimental program
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Effect test

Embodiment 1

[0013] Embodiment 1: Ozone / ultraviolet-biological activated carbon method purifies reservoir water.

[0014] Such as figure 1 Shown, reservoir water enters from the bottom of ozone / ultraviolet reactor 100, and ozone gas passes into from the bottom of described reactor, and ozone dosage is 3mg / L, and described ozone gas passes through the gas distribution in described reactor The plate 103 is uniformly mixed with water; the center of the reactor has a built-in ultraviolet lamp 101 with a quartz sleeve 102, water and ozone-containing gas flow upward through the reactor, and the residence time is between 16 minutes, and the organic pollutants in the water are removed Or conversion; the water after the primary treatment flows out from the upper water outlet 105 of the reactor, and the ozone tail gas is discharged from the gas discharge port 104 of the reactor;

[0015] The above-mentioned preliminary treated water flows in from the water inlet 205 on one side of the biological ac...

Embodiment 2

[0020] Embodiment 2: Ozone / ultraviolet-biological activated carbon method purifies secondary effluent of urban sewage treatment plant.

[0021] The ozone / ultraviolet-biological activated carbon method is used to purify the secondary effluent of urban sewage treatment plants. The residence time of the water to be treated in the ozone / ultraviolet unit is 16 minutes, and the residence time in the biological activated carbon unit is 15 minutes. When the ozone dosage of the ozone / ultraviolet unit is 2.5mg / L, 6mg / L and 9mg / L respectively, the removal effects of pollutants in water are shown in Table 2. When the dosage of ozone is 2.5mg / L, the ozone / ultraviolet method has a significant effect on total organic carbon (TOC) and permanganate index (COD) in water. Mn ) removal rate is 23.5% and 30.1% respectively, and ozone / ultraviolet-biological activated carbon method of the present invention is to TOC and COD Mn The removal rate of ozone reached 41.3% and 53.8%, respectively, which w...

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Abstract

A process for removing trace organic substance from water by ozone / ultraviolet ray-biologic activated carbon method features use of an ozone / ultraviolet ray unit and a biologic activated unit, and includes introducing the water to be treated and ozone to ozone / ultraviolet ray reactor containing ultraviolet lamp, mixing, flowing up, staying for 4-20 min to remove the convert the organic pollutant, flowing biologic activated carbon reactor, and staying for 10-80 min to degradate and remove the organic pollutant. Its advantage is high effect.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and relates to a method for water purification by combining ozone / ultraviolet technology and biological treatment technology, especially suitable for the deep purification of water polluted by trace organic matter, and is a kind of water supply and high-quality drinking water production technology. Background technique [0002] Ozone / UV is not a new technology. It has been studied decades ago. It has been applied to the decolorization of pulp bleaching wastewater in the paper industry. There are also many researches on the treatment of industrial wastewater and landfill leachate. . Ozone / UV methods generally come in two forms, one is a mixed-phase system, where ozone is bubbled into UV-irradiated water, and the other is a homogeneous-phase system, where ozone is first dissolved in water and then irradiated with UV light. Regardless of the form, ozone will decompose and transform into gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
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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