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Biological trickling filter bed for treating odorant pollutant in air

A biological trickling filter bed, pollutant technology, applied in the direction of air quality improvement, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of increased operating costs, decreased removal rate, increased pressure drop, etc., to reduce investment and operation. cost, the effect of reducing operating costs

Active Publication Date: 2006-05-17
江苏三强环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the filling method used in the current research is generally uniform from the bottom to the top (the type of filler is single or mixed with multiple fillers), so that a large amount of load is concentrated at the bottom of the reactor during operation, and excessive biological pollution is easy to accumulate during long-term operation. amount and metabolites (Lu C, LinM R, Wey I.Removal of pentane and styrene mixtures from waste gases by a trickle-bed airbiofilter[J].J.Chem.Technol.Biotechnol, 2001,76:820-826), As a result, the pressure drop increases and the removal rate decreases, and frequent backflushing is required, resulting in an increase in operating costs, which is not conducive to industrial operation

Method used

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  • Biological trickling filter bed for treating odorant pollutant in air
  • Biological trickling filter bed for treating odorant pollutant in air
  • Biological trickling filter bed for treating odorant pollutant in air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Experimental conditions

[0030] Laboratory test

[0031] Gas composition: hydrogen sulfide + air

[0032] Reactor: The inner diameter of the packed tower is 150 mm, made of transparent plexiglass. The total height of the packing layer is 600mm, divided into two layers, each layer is 300mm in height, and the layer spacing is 100mm. Aspect ratio: 4

[0033]Filler: see Table 1, the filling volume is 10L, including 5L of large particle filler and 5L of small particle filler.

[0034] 2. See the attached figure 2 , Biological inoculation of Thiobacillus or mixed species including Thiobacillus.

Embodiment 2

[0036] 1. Experimental conditions

[0037] Actual malodorous gas treatment in sewage lifting pumping station

[0038] Gas composition: actual malodorous gas

[0039] Reactor: The inner diameter of the packed tower is 1500mm, reinforced concrete structure. The total height of the packing layer is 3500mm, divided into two layers, each layer is 1600mm, and the layer spacing is 300mm.

[0040] It is also possible to fill the bottom of each layer with large particle fillers and the top with small particle fillers. The size of the particle packing in the lower layer is correspondingly larger than the size of the particle packing in the upper tower.

[0041] Packing: See Table 1, filling volume is 5.6m 3 Among them, the large particle and small particle filler are each 2.8m 3 .

[0042] 2. Operation effect:

[0043] Biological inoculation of Thiobacillus or mixed species including Thiobacillus. The entire continuous operation time is 180 days, and the peak concentration of hy...

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Abstract

The biological trickling filter bed for treating odorant pollutant in air is one stuffing tower with spraying head in the top, air inlet in the bottom, air outlet in the top, and height / diameter ratio of 4-10. The biological trickling filter bed adopts new type stuffing of different grain sizes and has decreased stuffing size distribution from the bottom to the top. Stuffing of two different sizes, including large grain stuffing in the bottom and small grain stuffing in the top, are adopted. The present invention has high treating load, homogeneous load distribution and low pressure drop.

Description

1. Technical field [0001] The invention relates to a biological treatment device for removing malodorous substances in the air, specifically, it belongs to the construction of a new type of biological trickling filter bed, also known as a bioreactor, by adopting a new filler and a filler filling method. 2. Background technology [0002] Odor pollutants are defined according to my country's "Odor Pollutant Emission Standards", which refer to all gaseous substances that stimulate the olfactory organs, cause people's unpleasantness and damage the living environment. [0003] Malodorous substances widely exist in industrial production and environmental restoration (McNevin D, Barford J. Biofiltration as anodour abatement strategy [J]. Biochem. Eng. J., 2000, 5: 231-242.) Since the 1950s People have carried out extensive research on the removal of odorous substances, and roughly developed two types of technologies, physical and chemical methods and biological methods. Biological ...

Claims

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Application Information

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IPC IPC(8): B01D53/84
CPCY02A50/20
Inventor 任洪强伍永钢丁丽丽
Owner 江苏三强环境工程有限公司
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