Method for removing trace medicine in water by using sludge-based activated carbon to catalyze ozone for oxidation

An ozone oxidation and activated carbon technology, applied in chemical instruments and methods, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve problems such as low concentration and pollutant pollution, achieve efficient removal, and reduce preparation costs , active effect

Inactive Publication Date: 2011-02-02
BEIJING FORESTRY UNIVERSITY
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to solve the pollution problem of low-concentration and high-stability pharmaceutical pollutants existing in water bodies in my country, and propose a kind of water advanced treatment technology-sludge-based activated carbon catalytic ozonation technology

Method used

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  • Method for removing trace medicine in water by using sludge-based activated carbon to catalyze ozone for oxidation
  • Method for removing trace medicine in water by using sludge-based activated carbon to catalyze ozone for oxidation
  • Method for removing trace medicine in water by using sludge-based activated carbon to catalyze ozone for oxidation

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specific Embodiment approach 1

[0013] Specific implementation mode 1: Catalytic ozonation water treatment method in this implementation mode: the polluted water body is first subjected to coagulation-sedimentation pretreatment, then catalytic ozonation treatment, and then the water is post-treated; sludge-based activated carbon catalytic ozonation water treatment In the method, the dosage of ozone is 2.7-3.3mg / L, the dosage of catalyst is 20-30mg / L, the contact time between ozone, catalyst and polluted water is 30-40min, and the concentration of traditional Chinese medicine pollutants in polluted water is 300-700μg / L range, the pH of the polluted water body is in the range of 6-8, in which the catalyst sludge-based activated carbon is the residual sludge of the municipal sewage plant, after mixing corncobs and activators, it is soaked, dried, activated at high temperature, and washed with acid and water and other steps are prepared.

[0014] The sludge-based catalytic ozonation reaction system used in this...

specific Embodiment approach 2

[0015] Embodiment 2: This embodiment differs from Embodiment 1 in that the ozone dosage is 1.8-2.2 mg / L, and other modes are the same as Embodiment 1.

[0016] In this embodiment, the removal efficiency of trace drug ibuprofen in water is 80%.

specific Embodiment approach 3

[0017] Embodiment 3: This embodiment differs from Embodiment 1 in that the dosage of the sludge-based activated carbon catalyst is 95-105 mg / L, and other methods are the same as Embodiment 1.

[0018] In this embodiment, the removal efficiency of trace drug ibuprofen in water is greater than 99.9%.

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Abstract

The invention relates to a method for removing trace medicine pollutant and improving the water quality by using sludge-based activated carbon to catalyze ozone for oxidation, belonging to the field of water supply or sewage advanced treatment technology. The catalyst sludge-based activated carbon takes the excess sludge of a municipal sewage plant as main raw material and is prepared by adding corn core biomass and activating agent zinc chloride into the main raw material. The activated carbon catalyst prepared by the method greatly reduces the generation cost of the technology of catalyzing the ozone for oxidation. The sludge-based catalyst has larger specific surface area, developed aperture and rich surface functional group. Due to the characteristics, the sludge-based catalyst is not only remarkable in the activity in the process of catalyzing the ozone to decompose, but also is very remarkable in the effect of removing the trace medicine in the water catalyzing the ozone for oxidation. The technology for catalyzing the ozone for oxidation by the sludge-based activated carbon can achieve the effects of removing more than 99% of trace medicine. The advantages are beneficial to the production and application of the technology for catalyzing the ozone for oxidation by the sludge-based activated carbon in the field of removing the trace medicine pollutant in drinking water or sewage in a strengthened way, thus providing an effective method for the strengthened removal technology of the trace medicine pollutant in the water.

Description

[0001] 1. Technical field A method of sludge-based activated carbon catalyzed ozone oxidation to remove trace drugs in water [0002] The invention relates to a method for removing trace medicines in water by catalyzing ozone oxidation with sludge-based activated carbon. 2. Background technology [0003] In recent years, the continuous appearance of new pharmaceutical pollutants (Pharmaceuticals, PhACs for short) in the surface water environment with "three causes" or endocrine disrupting effects has attracted more and more attention from scholars from various countries, and has become a persistent phenomenon. Organic pollutants (POPs) and endocrine disruptors (EDCs) are another type of low-concentration, highly toxic water environmental pollutants that have been widely concerned in the world. Although the concentration of PhACs in surface water is low, its impact on human health and the ecological environment has long-term, potential and catastrophic characteristics. risk an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04C02F1/78C02F1/58B01J21/18
Inventor 封莉王红娟齐飞张立秋李道静
Owner BEIJING FORESTRY UNIVERSITY
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