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Modified filling for waste gas bio-trickling filter and preparation method of modified filling

A bio-trickling filter tower and exhaust gas technology, applied in the direction of separation methods, air quality improvement, chemical instruments and methods, etc., can solve the problems of slow biofilm formation process, increased reactor start-up time, difficulty in stabilizing treatment efficiency, etc., and achieve raw material Low cost, improved biological treatment efficiency, and the effect of improving waste gas treatment efficiency

Inactive Publication Date: 2016-05-04
GUANGDONG INST OF MICROORGANISM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used fillers in biological trickling filter towers, such as ceramsite, volcanic rock, and plastic balls, have relatively weak adsorption capacity for degrading bacteria. During the colonization process of degrading bacteria on the surface of the filler, the cell behavior can still show Brownian motion. Due to the water shear force Or its own mobility returns to the liquid phase solution, resulting in slow biofilm formation process, increased reactor start-up time, and difficulty in stabilizing pre-treatment efficiency

Method used

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  • Modified filling for waste gas bio-trickling filter and preparation method of modified filling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The ceramsite is screened to obtain raw materials with a particle size of 5-100mm. After washing with water, put the washed ceramsite in 1.0molL -1 After soaking in aqueous hydrochloric acid for 24 hours, rinse thoroughly, and then use a concentration of 1.0molL -1 Soak in NaOH aqueous solution for 24 hours, take out the ceramsite and wash it with water until neutral. Then the ceramsite was dried at 110°C and placed in 25mgL -1 , 100, 500mgL -1 Immerse in polyethyleneimine (molecular weight: 1800) aqueous solution for 10 minutes, drain and dry at 90°C to become the modified filler for waste gas biological trickling filter tower.

[0027] Adsorption of degrading bacteria on the filler surface before and after modification: Weigh a certain amount of filler (modified filler for waste gas biological trickling filter tower or unmodified ceramsite with a particle size of 5-100mm) in a series of glass conical flasks, add Appropriate amount of mineral salt medium (medium for...

Embodiment 2

[0030] The ceramsite is screened to obtain raw materials with a particle size of 5-100mm. After washing with water, put the washed ceramsite in 3.0molL -1 After soaking in aqueous hydrochloric acid solution for 4 hours, rinse thoroughly, and then use a concentration of 2.0molL -1 Soak in NaOH aqueous solution for 4 hours, take out the ceramsite and wash it with water until neutral. Then the ceramsite was dried at 90°C and placed in 200mgL -1 Immerse in polyethyleneimine (molecular weight: 70,000) aqueous solution for 10 minutes, drain and dry at 90°C to become a modified filler for waste gas biological trickling filter tower.

[0031] According to the method of Example 1, the modified packing used in the exhaust gas bio-trickling filter tower of this example was tested for the adsorption capacity of degrading bacteria. The modified packing of the bio-trickling filter tower has significantly enhanced the load capacity of the degrading bacteria, and its distribution coefficien...

Embodiment 3

[0033] The ceramsite is screened to obtain raw materials with a particle size of 5-100mm. After washing with water, put the washed ceramsite in 1.0molL -1 After soaking in aqueous hydrochloric acid solution for 12 hours, rinse thoroughly, and then use a concentration of 1.0molL -1 Soak in NaOH aqueous solution for 12 hours, take out the ceramsite and wash with water until neutral. Then the ceramsite was dried at 100°C and placed in 100mgL -1 Immerse in D-polylysine aqueous solution for 10 minutes, drain and dry at 90°C, and then it becomes the modified filler for waste gas biological trickling filter tower.

[0034] According to the method of Example 1, the modified packing used in the exhaust gas bio-trickling filter tower of this example was tested for the adsorption capacity of degrading bacteria. The modified packing of the bio-trickling filter tower has significantly enhanced the load capacity of the degrading bacteria, and its distribution coefficient Kd value of the d...

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Abstract

The invention discloses a modified filling for a waste gas bio-trickling filter and a preparation method of the modified filling. The preparation method comprises the steps of after washing ceramic particles with the particle sizes of 5mm-100mm with water, steeping the ceramic particles in hydrochloric acid, taking out the ceramic particles, washing the ceramic particles with water, steeping the ceramic particles in an NaOH solution, taking out the ceramic particles, washing the ceramic particles to be neutral with water, drying, steeping with a modifier, draining off, and drying, so as to obtain the modified filling for the waste gas bio-trickling filter. The modified filling for the waste gas bio-trickling filter and the preparation method are particularly applicable to bio-trickling filter devices, the absorption effect of the obtained modified filling to degrading bacteria is good, the waste gas treatment efficiency of the bio-trickling filter can be effectively improved, meanwhile, the raw material cost is low, the processing process is simple, and the market application prospect is wide.

Description

Technical field: [0001] The invention belongs to the technical field of biological exhaust gas purification, and in particular relates to a modified filler used in an exhaust gas biological trickling filter tower and a preparation method thereof. Background technique: [0002] Purification of organic waste gas is an important aspect of air pollution control. In the past 30 years, with the rapid development of my country's economy, the number and types of volatile organic compounds (VOCs) discharged into the atmosphere from industrial processes such as organic chemical industry, petrochemical industry, metallurgical chemicals, coal chemical industry, rubber regeneration, and paint coatings have increased day by day. VOCs from industrial sources have become an important cause of haze weather. In 2013, the "Notice of the State Council on Printing and Distributing the Action Plan for the Prevention and Control of Air Pollution" clearly required the promotion of VOCs pollution co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/85B01D53/44
CPCB01D53/44B01D53/85B01D2257/708Y02A50/20
Inventor 赵刚李建军冯荣芳涂翔郑理慎张甜甜
Owner GUANGDONG INST OF MICROORGANISM
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