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Method of deodour using biofiltration

A technology of biological filtration and biological filter material, which is used in various industrial enterprises, municipal sewage sludge and garbage treatment, and purification of odorous gases produced by agricultural and animal husbandry enterprises. Secondary pollution and other problems, to achieve the effect of low construction cost investment, obvious removal effect and long service cycle

Inactive Publication Date: 2005-03-23
李晓飞
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] People have been using a variety of purification technologies for odorous gases, such as chemical washing, activated carbon adsorption, thermal oxidation, liquid spraying, etc., but the limitations or defects of these methods became more obvious after the advent of biological filtration. , these methods are large investment in equipment, high operating costs, limited treatment performance, temporary solutions but not root causes, and poor treatment may cause secondary pollution
[0003] There were early reports on biological deodorization in foreign countries, and it was not until recent years in China that there were reports on simple experiments, most of which were limited to preliminary research in the laboratory. Some methods disclosed so far are not systematic in theory and engineering practice. To solve the problem, some are limited by various conditions, have not passed more stringent tests, and have not seen clear records of relevant inspections meeting the national emission standards for odor pollutants, and are only limited to general sensory effects, without qualitative and quantitative results. analysis, or has not been tested for a long time, etc.

Method used

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  • Method of deodour using biofiltration
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  • Method of deodour using biofiltration

Examples

Experimental program
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Effect test

Embodiment 1

[0020] The main components of the filter material configuration include wood chips, tree root materials, and bark main materials account for about 65%, and humus soil, pine needle soil, and ceramsite account for 35%.

[0021] In August 2003, it was actually installed and applied at the water inlet grille of Tianjin Jizhuangzi Wastewater Treatment Plant. The actual treatment gas volume was 300 cubic meters per hour, the pollutant gas concentration range was between 30-200ppm, and the online test time was about 60 days. Two testers measure the inlet and outlet of the system at the same time, and continuously measure and record the temperature, humidity, pressure and other parameter data in detail. After entering the stable period of the system, the hydrogen sulfide treatment efficiency is stable above 98%, and the gas concentration treatment effect is relatively obvious. After the gas sampling analysis and identification by the Institute of Atmospheric Physics of the Chinese Aca...

Embodiment 2

[0023] The main components of the filter material configuration include wood chips, tree root materials, bark and other main materials accounting for about 70%, and humus soil, hemp palm and shells accounting for 30%.

[0024] In February 2004, it was actually installed and applied in the cyclone sedimentation tank of Guangzhou Datansha Wastewater Treatment Plant. The actual treatment gas volume was 500 cubic meters per hour, and the concentration range of pollutant gas was between 20-80ppm. The test time was nearly 3 days Monthly, measure and record the temperature, humidity, pressure, concentration and other parameter data in detail. The continuous test data shows that the hydrogen sulfide treatment efficiency is stable above 96%, the treatment effect reaches and exceeds the limit value stipulated in the "Odor Pollutant Emission Standard", the gas concentration treatment effect is very good, and the filter bed surface filter material also adopts a separate The structure of t...

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Abstract

A biological filtering method for deodoring gas features that the odor gas flows through the particular biological filtering material for degradating the pollutent by microbes.

Description

technical field [0001] The invention relates to a treatment method for waste gas, in particular to a purification method for municipal sewage sludge and garbage treatment and various industrial enterprises, agricultural and animal husbandry enterprises producing and emitting malodorous gas. Background technique [0002] People have been using a variety of purification technologies for odorous gases, such as chemical washing, activated carbon adsorption, thermal oxidation, liquid spraying, etc., but the limitations or defects of these methods became more obvious after the advent of biological filtration. , these methods are large investment in equipment, high operating costs, limited treatment performance, temporary cure but not permanent treatment, and may cause secondary pollution if not handled properly. [0003] There were early reports on biological deodorization in foreign countries, and it was not until recent years in China that there were reports on simple experiment...

Claims

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Application Information

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IPC IPC(8): A61L9/00B01D53/84
CPCY02A50/20
Inventor 李晓飞
Owner 李晓飞
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