Process for decolouring by co-metabolism of immobilized bionts

A co-metabolism and biological technology, applied in chemical instruments and methods, biological water/sewage treatment, anaerobic digestion treatment, etc., can solve problems such as long cultivation and domestication time

Inactive Publication Date: 2004-03-03
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process requires a long time for cultivation and domestication

Method used

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  • Process for decolouring by co-metabolism of immobilized bionts
  • Process for decolouring by co-metabolism of immobilized bionts
  • Process for decolouring by co-metabolism of immobilized bionts

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 800mg / L peptone into tap water, pass it into an upflow fixed-bed reactor to produce a bacterial suspension, pass it into an upflow fixed-bed reactor filled with attapulgite, and let it stand for 48 hours. The attapulgite is Granules with a diameter of 2-5mm are made by burning at 750°C for 3 hours. After the immobilization of bacteria is completed, mix acid red B50mg / L and different concentrations of peptone into tap water as the raw water to be treated for decolorization. The reactor column is a cylindrical plexiglass column with a height of 100cm and an inner diameter of 7.2cm. The bottom is hemispherical and equipped with a water inlet pipe. 20cm from the top of the column, the oxygen demand of the influent is 200mg / L. The water concentration and corresponding chroma removal results are shown in Table 2.

[0030] water distribution

Embodiment 2

[0032] The raw water to be treated is printing and dyeing wastewater, and the remaining operating conditions are the same as in Example 1. The results are shown in Table 3.

[0033] water distribution

Embodiment 3

[0035] The raw water to be treated is domestic sewage, and the remaining operating conditions are the same as those in Example 1, and the results are shown in Table 4.

[0036] water distribution

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Abstract

An immobilized organism co-metabolism and decolouring process for the dyeing sewage includes such steps as adding nutritive liquid to non-sterilized water to obtain bacterial suspension, adding it to an up-flow fixed bed reactor filled with attapulgite, and adding carbon source and nitrogen source substances to the sewage to be treated. Its advantage is high average decolouring rate up to 80%.

Description

technical field [0001] The invention belongs to a method for biological decolorization of azo dyes, in particular to a method for decolorization of azo dyes by adopting immobilized biological co-metabolism. Background technique [0002] Commonly used methods for treating printing and dyeing wastewater include physical and chemical methods and biological methods. At present, the commonly used physical and chemical technologies include adsorption decolorization technology, coagulation sedimentation technology, chemical oxidation technology, ion exchange technology, ultrafiltration membrane decolorization technology, etc. Biochemical methods mainly include aerobic treatment, anaerobic treatment and aerobic anaerobic method. Researchers generally isolate the strains capable of degrading dyes from dye industrial wastewater treatment structures, and then add activated sludge after expanded culture or use immobilized cell method to immobilize the strains on the carrier to improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/68C02F3/00C02F3/28C02F3/34
Inventor 陈梅雪刘会娟王怡中刘俊新王菊思
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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