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Method for optimizing long-term operating performance of VOC gas biological filtration device by utilizing ozone

A biological filtration and long-term operation technology, applied in the field of environmental governance, can solve the problems that have not yet been seen in the regulation of biomass in bioreactors

Active Publication Date: 2011-02-09
紫荆汇智环境科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the above applications, ozone is used as an oxidant or disinfectant in the field of water treatment, and there is no precedent for using ozone to regulate biomass in bioreactors.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for optimizing the long-term operation performance of a VOC gas biofiltration device using ozone, VOC selects chlorobenzene; after the biofiltration device starts and runs stably, ozone gas is introduced into the chlorobenzene gas before entering the biofiltration device to form a mixed gas, The mixed gas is passed into the biological filter device, and the concentration of chlorobenzene in the mixed gas is 500mg / m 3 , the concentration of ozone is 40mg / m 3 , The empty tower residence time of the biological filter device is 90 seconds.

Embodiment 2

[0024] A method for optimizing the long-term operation performance of a VOC gas biofiltration device using ozone, VOC selects chlorobenzene; after the biofiltration device starts and runs stably, ozone gas is introduced into the chlorobenzene gas before entering the biofiltration device to form a mixed gas, The mixed gas is passed into the biological filter device, and the concentration of chlorobenzene in the mixed gas is 850mg / m 3 , the concentration of ozone is 60mg / m 3 , The empty tower residence time of the biological filter device is 90 seconds.

Embodiment 3

[0026] A method for using ozone to optimize the long-term operation performance of a VOC gas biological filter device. VOC uses toluene; The mixed gas is passed into the biological filter device, and the concentration of toluene in the mixed gas is 1800mg / m 3 , the concentration of ozone is 90mg / m 3 , The empty tower residence time of the biological filter device is 60 seconds.

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PUM

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Abstract

The invention belongs to the technical field of environmental treatment, and in particular relates to a method for optimizing the long-term operating performance of a volatile organic compound (VOC) gas biological filtration device by utilizing ozone. In the method, after the biological filtration device is started and operated stably, ozone gas is introduced into VOC gas to be treated to form a mixed gas to enter the biological filtration device, wherein the concentration of the VOC gas in the mixed gas is 500 to 2,000mg / m<3> and the concentration of the ozone gas is 40 to 400 mg / m<3>. The method can effectively control the biomass in the biological filtration device and simultaneously does not affect the VOC removal activity of microorganisms, so that a packing layer is not easy to clog, pressure reduction is maintained stably and a VOC removal effect is not reduced in a long-term operating process of the biological filtration device.

Description

technical field [0001] The invention belongs to the technical field of environmental treatment, and in particular relates to a method for optimizing the long-term operation performance of a VOC gas biological filter device by using ozone. Background technique [0002] Volatile organic compounds (VOC), such as toluene and chlorobenzene, are a class of organic pollutants with a wide range of sources and great hazards. After being discharged into the environment, they will greatly threaten human health and environmental safety. Among the many control methods, the biological filtration process has become a commonly used control method for volatile organic compounds due to its advantages such as simple process operation, convenient maintenance, small secondary pollution, and economical feasibility. However, in the long-term operation of the biological filtration device, especially when dealing with high-concentration organic gases, excessive biomass accumulation will occur, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/72B01D53/76
CPCY02A50/20
Inventor 席劲瑛谷风胡洪营唐好
Owner 紫荆汇智环境科技(北京)有限公司
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