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Technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms

A technology for organic waste gas and biological treatment, which is used in air quality improvement, chemical instruments and methods, and dispersed particle separation, etc.

Inactive Publication Date: 2013-03-13
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, the pollutants contained in exhaust gas are often diverse and complex, including both hydrophobic substances and hydrophilic substances; both conventional biodegradable and difficult to degrade; single use of bacteria, fungi or both complex systems are difficult to remove effectively at the same time

Method used

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  • Technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms
  • Technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms
  • Technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: figure 1 Among them, the integrated composite biological treatment process of insoluble and refractory organic waste gas of the present invention: the biological trickling filter tower used for treating organic waste gas is a circulating liquid reflux device, and the circulating liquid reflux device includes: trickling filtrate storage tank 3, Drip filtrate circulation pipe 6, flow meter 7, circulation pump 8, air inlet pipe 4 and air outlet pipe 5.

[0033] Construct the fungus-bacteria composite biological trickling filter tower, the specific process is as follows:

[0034] 1. Pre-aerate the activated sludge of the coking sewage treatment plant for 48 hours, configure 5L of activated sludge and nutrient solution mixture, place it in the liquid storage tank 3, and directly perform circulating drip filtration through the circulating pump 8.

[0035] 2. In the first stage of gas-phase toluene domestication, the inlet concentration of toluene is 500~1000mg·m ...

Embodiment 2

[0055] (1) Experimental conditions:

[0056] Gas composition: styrene, styrene concentration 200~500 mg·m -3 ;

[0057] Biological trickling filter packing: ceramsite;

[0058] Gas flow: 0.4 m 3 h -1 , EBRT is 45 s;

[0059] Experimental bacterial species: Candida;

[0060] (2) Using the attached figure 1 The biological trickling filter purification system shown in the figure purifies styrene waste gas. By verifying the treatment capacity of the biological trickling filter for styrene under different pH conditions, we get: when the pH value is 4.0, the removal of styrene by the biological trickling filter The efficiency is continuously maintained above 95%, and the highest removal efficiency is obtained. At this time, the number of fungal colonies is 3.00×10 9 CFU·g -1 , accounting for 92.58% of the total number of colonies.

[0061] As can be seen from the two examples, the pH for obtaining the best treatment effect for xylene is 7.0, while for styrene, the best tre...

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Abstract

The invention relates to a technology for processing indissolvable and nondegradable organic waste gas by integrated composite organisms, and the technology is applicable to the purification of low-density, indissolvable and nondegradable organic waste gas. A high-density low-speed air suction way and a domestication way of low flow-rate circuiting liquid are adopted; and during the domestication process, a fungus-bacteria composite organism system with pseudomonas as a dominant bacterium is constructed by use of a pH changing way. A composite organism tower combines two microorganisms of fungus and bacteria, and the diversity of microorganisms can be effectively applicable to the requirements of various indissolvable and nondegradable organics on different bacteria; system resistance is reduced by the introduction of a fungus system; water film resistance is reduced effectively and the mass transfer process of the organic waste gas is accelerated by means of low circuiting flow-rate; an integrated type technological structure is adopted to the fungus and the bacteria, so the processing technology is simplified and the investment cost and operating cost are reduced. The system is high in efficiency of removing the indissolvable and nondegradable organic waste gas and load, and has an extensive applicability.

Description

[0001] technical field [0002] The invention relates to a biological purification method of organic waste gas, in particular to a process method for integrated composite biological treatment of insoluble and refractory organic waste gas. Background technique [0003] Many processes in industrial production, such as the production of chemicals such as solvents, paints and coatings, polymers and resins, petrochemicals, painting, instrumentation, metal enameled wire production and printing, etc., will emit a large amount of organic waste gas, which is harmful to human health and the natural environment. There comes great danger. Biological purification of organic waste gas is a relatively new gas purification technology, which mainly uses the metabolic process of microorganisms to remove organic matter in waste gas and realize the purification of waste gas. [0004] In the current bio-purification organic waste gas reactor, bacteria and fungi are the two main microorga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/72
CPCY02A50/20
Inventor 王丽萍张会来
Owner CHINA UNIV OF MINING & TECH
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