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Two-stage method of applying white rot fungus to degrade hard-to-degrade environment pollutant

A technology of environmental pollutants and white rot fungi, which is applied in the field of environmental pollutant treatment, can solve the problems of harsh application conditions of white rot fungi, achieve strong anti-miscellaneous bacteria pollution, reduce feeding costs, and speed up the effect of reaction rate

Inactive Publication Date: 2005-04-27
TSINGHUA UNIV
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Problems solved by technology

[0004] In order to solve the problem that the application conditions of white rot fungi are too harsh, the present invention studies the physiological and biochemical characteristics of white rot fungi, compares the influence of environmental factors on the growth and decolorization process of white rot fungi, and proposes a suggested operating process

Method used

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Examples

Experimental program
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Embodiment Construction

[0032] The present invention will be described below in conjunction with specific examples.

[0033] Operation example: Taking the refractory dye reactive brilliant red as the target compound, a two-stage process is used to degrade refractory pollutants with white rot fungi. There are many types of refractory organic matter, and dyes are relatively common, large-scale, and harmful refractory pollutants. Reactive dyes are one of the types with the highest usage and loss rate among dyes. Reactive brilliant red is relatively Common type, so this example uses the most representative reactive brilliant red as the target compound.

[0034] Filler: add polyurethane foam, wood particles and small pieces of corn cob, cut into 1×1×1 cm square size, mix evenly in equal amounts, fill into a cylindrical filter column with a diameter of 12 cm, and the volume of the filler is 0.6L. Polyurethane foam is one of the commonly used inert carriers, and the selection of different types of carriers...

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Abstract

The present invention is two-stage method of applying white rot fungus to degrade hard-to-degrade environment pollutant, and belongs to the field of environmental pollutant treating technology. Based on the research of the biochemical characteristic of white rot fungus, the present invention proposes intermittent running mode including two separated stages of growth and degradation. The present invention adopts high temperature culture and normal temperature degradation, agricultural waste corn cob and timber as nutrients source, high nutrients concentration for growth and low nutrients concentration for degradation and natural ventilation in growth stage, and thus has low power consumption and low cost. Adding carrier can maintain higher exocellular enzyme concentration, speed reaction, maintain higher decolorizing efficiency and separate mud from water. The present invention has good oxygen supply, good hydraulics characteristic and high hetero bacteria pollution resistance.

Description

technical field [0001] The invention belongs to the technical field of environmental pollutant treatment. Background technique [0002] The white-rot fungus Phanerochaete chrysosporium has attracted extensive attention because of its strong ability to degrade refractory organic matter. A large number of studies have used various reactors to degrade different target compounds, and most of them have achieved good degradation results. However, the problem of harsh reaction conditions is common, which is the main obstacle for the large-scale practical application of white rot fungi to degrade environmental pollutants. [0003] Most of the existing white-rot fungal reactors use a unified method of growth and degradation processes: higher nutrient concentrations can promote the growth of white-rot fungi, but will inhibit the initiation of secondary metabolism; the optimal growth temperature of white-rot fungi is 35 ℃-39℃, most reactors use this temperature condition, the whole pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00
Inventor 文湘华林刚
Owner TSINGHUA UNIV
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