Biological desulfurizing and deodorizing trickling-filtration tower device and biological desulfurizing and deodorizing method

A technology of biological desulfurization and trickling filter tower, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems of hydrogen sulfide poisoning to bacteria and blockage of start-up time, and reduce system start-up time and filler use time. Long-term, reduce the effect of increasing operating costs

Inactive Publication Date: 2017-01-04
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a biological desulfurization and deodorization trickling filter tower device to solve the technical problem that hydrogen sulfide is poisonous to bacteria. Generate secondary pollution and solve practical engineering problems such as packing blockage

Method used

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  • Biological desulfurizing and deodorizing trickling-filtration tower device and biological desulfurizing and deodorizing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 Shown is a schematic structural view of a biological desulfurization and deodorization trickling tower device of the present invention, the device includes a biological oxidation tower I, a chemical absorption desulfurization and deodorization tower II and a circulating spray device; the biological oxidation tower I is made up of a plurality of independent biological oxidation units and the intake buffer zone 10 below the biological oxidation units are connected by a flange 7. The lean liquid inlet 2 and the air discharge port 1 are respectively arranged on the top of the tower, and the rich liquid is arranged at the bottom of the tower. Discharge port 12; said biological oxidation unit contains filler 9, air inlet 11 is set below said intake buffer zone 10, and air compressor 14 is connected to air inlet 11 through air inlet pipe; said chemical absorption The desulfurization and deodorization tower II contains a chemical absorption liquid 15, and the t...

Embodiment 2

[0045] Utilize the device described in embodiment 1 to biological desulfurization and deodorization of odorous gas, use wood chips as filler 9 in the biological biological oxidation unit, and hydrogen sulfide-containing odor is transported to the chemical industry through the odor air inlet 18 and the nano-explosion head by the blower 21 At the bottom of the absorbing liquid 15, after the contact with the chemical absorbing liquid 15, the hydrogen sulfide is absorbed and the odor is discharged through the odor discharge port 16. The air is transported to the bottom of the biological oxidation tower through the air compressor 14 through the air pipe, valve and air inlet 11 for the necessary growth of microorganisms and the gas source used for backwashing. The spray liquid in the lean liquid collection tank 19B at the bottom of the chemical absorption desulfurization and deodorization tower is transported to the top of the biological oxidation tower through the peristaltic pump 2...

Embodiment 3

[0049] Using the same device as in Example 1, the spray density is 0.5 to 1.0m 3 Spray liquid / m 3 Filling h; The hydraulic retention time of the spray liquid in the biological oxidation tower is 2 months. Other conditions are identical with embodiment 2.

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Abstract

The invention discloses a biological desulfurizing and deodorizing trickling-filtration tower device and a biological desulfurizing and deodorizing method for odor. The biological desulfurizing and deodorizing trickling-filtration tower device comprises a biological oxidizing tower, a chemical-absorption desulfurizing and deodorizing tower and a circular spraying device, wherein the biological oxidizing tower is formed by connecting a plurality of biological oxidizing units containing fillers and an odor-inflow cushioning area; a biological trickling filter is arranged at the top part of the tower, and an air inlet is arranged at the odor-inflow cushioning area; the chemical-absorption desulfurizing and deodorizing tower contains chemical absorbing liquid, an odor inlet is arranged at the bottom part of the chemical-absorption desulfurizing and deodorizing tower, and a rich-liquid inlet is arranged above the liquid level; the circular spraying device comprises a poor-liquid collecting groove, a rich-liquid collecting groove and a circulating pump; the rich-liquid collecting groove is used for collecting spraying liquid discharged from the biological oxidizing tower and conveying the spraying liquid to the rich-liquid inlet by the circulating pump; and the poor-liquid collecting groove is used for collecting chemical absorbing liquid discharged from the chemical-absorption desulfurizing and deodorizing tower and conveying the chemical absorbing liquid to the biological trickling filter. The invention also discloses a biological desulfurizing and deodorizing method utilizing the biological desulfurizing and deodorizing trickling-filtration tower device.

Description

technical field [0001] The invention relates to the technical field of waste treatment, in particular to a trickling filter tower device for biological desulfurization and deodorization and a method for biological desulfurization and deodorization of odorous gas. Background technique [0002] In industry, malodorous gases such as hydrogen sulfide produced by breeding plants, composting plants, garbage treatment plants and sewage treatment plants will pollute the environment and cause hazards such as corrosion of equipment. The gas produced by it usually has the characteristics of large amount and low concentration. The main components of malodorous gas are: ammonia (NH 3 ), hydrogen sulfide (H 2 S), methylsulfide ((CH 3 ) 3 S), trimethylamine ((CH 3 ) 3 N), dithiomethyl ((CH 3 ) 3 S 2 ), acetaldehyde (CH 3 CHO), styrene (C 6 h 5 C 2 h 3 )Wait. Among them, hydrogen sulfide (H 2 S) is an important component in odorous gas, which can cause relatively great harm ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/52B01D53/78
CPCB01D53/52B01D53/78B01D53/84B01D2251/95Y02A50/20
Inventor 周俊曾勇贾红华张雪英杨俊韦萍雍晓雨
Owner NANJING UNIV OF TECH
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