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Processing device of ammoniacal odor and spray liquid and operation method thereof

A treatment device and operation method technology, applied in separation methods, chemical instruments and methods, air quality improvement, etc., can solve problems such as limiting denitrification and denitrification effects, difficulty in commissioning and management, and increased treatment costs, etc., to achieve odor removal High efficiency, significant denitrification effect, and the effect of reducing the amount of filler

Inactive Publication Date: 2009-08-26
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the trickling filter tower needs to add fillers. When the amount of gas to be processed is large, the volume of the required equipment is large, which increases the investment cost and makes debugging and management difficult. The spray liquid after deodorization treatment also needs further treatment.
[0006] In addition, the C / N ratio in the effluent of the scrubber and the biological trickling filter is low, which limits the denitrification effect of denitrification in the subsequent biological treatment process. If additional carbon sources are added, the treatment cost will increase

Method used

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  • Processing device of ammoniacal odor and spray liquid and operation method thereof
  • Processing device of ammoniacal odor and spray liquid and operation method thereof

Examples

Experimental program
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Embodiment 1

[0027] Embodiment 1: (see figure 1 ) odor enters, the three-way 1 divides the airflow into two parts, and one part enters the biological trickling filter tower 4 through the No. 1 flow control valve 2 and the No. 1 gas flow meter 3. , liquid distributor 7, gas outlet 8, there is a No. 1 NO at the bottom of the tower x -Concentration detector 9, No. 1 circulating pump 10 and No. 1 circulating water pipe 11 connected with the liquid distributor are arranged on the outside, water outlet pipe is provided at the bottom of the tower, equipped with No. 1 valve 12; another part of odor passes through No. 2 flow control valve 13 and The No. 2 gas flowmeter 14 enters the washing tower 15, and the washing tower includes a gas distributor 16, a liquid distributor 17, and a gas outlet 18. The bottom of the tower is provided with a No. 1 ammonia-nitrogen concentration detector 19, and No. 2 circulation pump 20 and liquid distributor are arranged outside. The No. 2 circulating water pipe 2...

Embodiment 2

[0033] Embodiment 2: (see figure 2 ) The difference between this embodiment and Embodiment 1 is that the effluent of the biological trickling filter tower 4 is passed into the scrubber 15 (in series), and enters the liquid distributor 17 through the circulating pump 20 and the circulating water pipe 21 as the scrubber spray water. And ASBR29 effluent no longer enters the washing tower. The water volume ratio of the ASBR backflow to the biotrickling filter tower and the mixing adjustment tank is 1:1.5-2.5.

[0034] In this embodiment, the effluent of the biological trickling filter is used as the spray water of the washing tower, which is mainly because the effluent of the biological trickling filter contains NO x - The concentration is high, the concentration of ammonia nitrogen is low, and the water is weakly acidic, which is very suitable as the spray water of the washing tower. After the washing tower is drained, the effluent of the biological trickling filter is inject...

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Abstract

The invention relates to a processing device of ammoniacal odor and spray liquid and operation method thereof, belonging to the filed of environmental protection. The processing device mainly comprises a biotrickling filtering tower (4), a washing tower (15), a hybrid regulating reservoir (24) and an anaerobic sequence batch reactor (29). The ammoniacal odor enters the biotrickling filtering tower (4) and the washing tower (15) after diffluence, gas purified through the two towers can reach emission requirement, the concentration of NOx in the recycled spray liquid inside the biotrickling filtering tower is gradually increased, and the concentration of NH4 in the recycled spray liquid inside the washing tower is gradually increased. The drainage frequency and amount of spray liquid in the two towers are controlled so that the spray liquid is merged into the hybrid regulating reservoir (24) and enters the anaerobic sequence batch reactor (29) after water quality is adjusted, and the effluent after anaerobic amine oxidase denitrogenate processing is used as spray water of biotrickling filtering tower and washing tower and thinned water of hybrid regulating reservoir. The invention has high odor clearance; on the premise that the system has good operation, spray water is cycled in the inner loop without secondary pollution, and the water source is saved.

Description

technical field [0001] The invention belongs to the field of environmental protection, and relates to a device for treating ammonia-containing odor by using a biological trickling filter tower and a washing tower, and mixing and reusing effluent from the two towers, and an operating method thereof. Background technique [0002] Ammonia is a kind of odor-causing gas, which is very common in industrial and agricultural production and life, such as chemical industry, metallurgy, food processing, breeding and other industries. In addition to producing stench, high concentration of ammonia is also very harmful to the health of humans and animals: if the concentration of ammonia is 13mg / m 3 Exposure to environment for 7-8 hours, the NH in urine 3 The amount of ammonia increases, the consumption of oxygen decreases, and the respiratory rate decreases; chickens live at an ammonia concentration of 15mg / m 3 High concentrations of ammonia nitrogen can also reduce the appetite of chic...

Claims

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Application Information

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IPC IPC(8): B01D53/84
CPCY02A50/20
Inventor 汪群慧杨朔吴川福孙晓红谢维民
Owner UNIV OF SCI & TECH BEIJING
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