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Method for removing 2, 4-dichlorophenol in water by using polyurethane sponge fixed white rot fungi

A technology of polyurethane sponge and white rot fungus, applied in chemical instruments and methods, water pollutants, natural water treatment, etc.

Inactive Publication Date: 2010-06-16
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, there have been no reports of using polyurethane sponge as a biological immobilization carrier

Method used

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  • Method for removing 2, 4-dichlorophenol in water by using polyurethane sponge fixed white rot fungi

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with specific embodiments, but these descriptions are only exemplary. A polyurethane biological immobilization carrier is obtained by soaking in an ethanol solution with a volume fraction of 70% to remove sponge debris. It exhibits the characteristics of porosity and hydrophilicity; stable chemical properties, insoluble in acid / alkaline aqueous solution, strong hydrolysis resistance; high biocapacity and mass transfer rate, good compatibility, and can effectively adsorb and immobilize microorganisms , suitable for biological reaction treatment of various sewage. In addition, polyurethane sponge has reliable biological safety and is conducive to the growth of microorganisms. The method successfully realizes high activity and large-scale preparation of immobilized cells of white rot fungi.

[0025] The polyurethane sponge was cut into cuboids with a size of 2 x 1 x 1 cubic centimeter. Soak in 70% et...

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Abstract

The invention discloses a method for removing 2,4-dichlorophenol in water by using polyurethane sponge fixed white rot fungi, belonging to the field of environmental microbiology. The method comprises the following steps: preprocessing a carrier, preparing fixed white rot fungi and removing 2, 4-dichlorophenol in water. The carrier has the characteristics of porosity, hydrophily and good adsorbability, enjoys stable chemical property and hydrolytic resistance, high organism bearing capacity and mass transfer rate and is not soluble in acid / alkaline water solution; while the fixed carrier can effectively absorb and fix white rot fungi, improve capacity of fixed white rot fungi in removing 2,4-dichlorophenol in water and leads the fixed white rot fungi to be easily separated from the product, thus being applicable to execute biological reaction processing on multiple sewages.

Description

technical field [0001] The invention relates to a biological immobilization carrier, more specifically, the invention relates to a polyurethane sponge biological immobilization carrier combined with chemical adsorption, and a method for removing 2,4-dichlorophenol in water by using the immobilization carrier. Background technique [0002] Chlorophenols are a class of refractory compounds that have been widely used in the production of wood preservatives, pesticides and herbicides for a long time. Among them, 2,4-dichlorophenol is a toxic and refractory pollutant, which is widely present in the production wastewater of pesticides, dyes and plasticizers. The United States, China and other countries have included it in the blacklist of harmful substances or priority pollutants in water. Therefore, how to eliminate the pollution of chlorophenol compounds in the environment has become a subject of extensive attention. At present, with the continuous improvement of environmental...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C02F3/10C02F101/36C02F101/34C02F103/36
CPCY02W10/10
Inventor 牛军峰王姣李晓锋李艳霞盛美玲王乐实蒋国翔
Owner BEIJING NORMAL UNIVERSITY
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