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Sewage station waste gas treatment device with composite biological method and waste gas treatment method of sewage station waste gas treatment device

A technology of waste gas treatment and biological method, applied in gas treatment, separation methods, chemical instruments and methods, etc., can solve problems such as high cost and secondary pollution, and achieve the effect of convenient operation, cost saving, and improved treatment effect

Inactive Publication Date: 2018-12-25
WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, this process uses high-efficiency ceramic particles with a diameter of 5-8 cm as the biological filler, which is expensive, and the waste filler after replacement is secondary pollution and requires additional treatment

Method used

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  • Sewage station waste gas treatment device with composite biological method and waste gas treatment method of sewage station waste gas treatment device

Examples

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Effect test

Embodiment 1

[0052] After the gas produced by the biochemical tank, collection tank and anaerobic tank of a sewage station is mixed (the gas volume is 5000Nm 3 / h, the concentration of non-methane total hydrocarbons is 58mg / Nm 3 (calculated as carbon), the concentration of hydrogen sulfide is 56mg / Nm 3 ), after being collected through the pipeline, enter the gas-liquid two-phase multi-stage biological purification treatment device. The designed cross-sectional flow velocity of waste gas in this project is 0.4m / s, the residence time is 5s, and the filler height is 2m. The filler is spongy petroleum coke particles, a by-product of the plant, and the indicators all meet the requirements. The biological absorption system is designed with two layers, and the spray density is 2m 3 / (m 2 · h), after the waste gas is treated by multi-stage biological purification, the microbial droplets and water droplets are removed by the demister and then discharged. The overall concentration of non-methane...

Embodiment 2

[0055] After the gas produced in the collection tank, biochemical tank and sludge concentration tank of a sewage station is mixed (the gas volume is 3000Nm 3 / h, the concentration of non-methane total hydrocarbons is 112mg / Nm 3 (calculated as carbon), part of the organic matter is sulfurized organic matter, and the concentration of hydrogen sulfide is 91mg / Nm 3 ), after being collected through the pipeline, enter the gas-liquid two-phase multi-stage biological purification treatment device. The designed waste gas cross-sectional velocity of this project is 0.3m / s, the residence time is 6s, and the filler height is 1.8m. The filler is spongy petroleum coke particles, a by-product of the plant, and the indicators all meet the requirements. The biological absorption system is designed with 3 layers, and the spray density is 3m 3 / (m 2 h). After the exhaust gas is treated by multi-stage biological purification, the microbial droplets and water droplets are removed by the demis...

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Abstract

The invention discloses a sewage station waste gas treatment device with a composite biological method and a waste gas treatment method of the sewage station waste gas treatment device. The sewage station waste gas treatment device comprises a cylinder, a defogging system is mounted at the upper portion of the cylinder, a discharge outlet is arranged in the cylinder at the top of the defogging system, an opening is arranged below one side wall of the cylinder, an air intake system is connected to the position of the opening through a pipeline, and a liquid storage system is mounted in the bottom of the cylinder. An integrated gas-liquid two-phase multi-stage biological purification treatment device is adopted, petroleum coke, a by-product of the petrochemical industry, is used as a biological filler filled into the integrated gas-liquid two-phase multi-stage biological purification treatment device, and sulfur-containing odorous substances and VOCs (volatile organic chemicals) in a waste gas of a sewage station are removed through attachment and adsorption of microorganisms; meanwhile, problems about large occupation and low energy efficiency in a traditional biological method aresolved through the unique structure design of the integrated gas-liquid two-phase multi-stage biological purification treatment device, and environmental-friendly, harmless and energy-saving treatmentof the waste gas of the sewage station is realized.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment equipment, in particular to a waste gas treatment device and a waste gas treatment method of a sewage station by a compound biological method. Background technique [0002] The air pollution caused by the development of industry is becoming more and more serious. Among them, a large amount of malodorous substances will be produced during the wastewater treatment process. These pollutants will pollute the environment and endanger human health if they escape into the air. Therefore, appropriate technical measures must be taken for treatment before discharge. The malodorous substances produced by wastewater mainly include sulfur-containing VOCs such as H2S, mercaptans, and carbonyl sulfide. These pollutants have low concentration, low odor threshold, and strong biodegradability, which are suitable for biological purification. Compared with conventional physical and chemical methods, biol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/84B01D53/44B01D46/30
CPCB01D46/30B01D53/44B01D53/84B01D2257/708Y02A50/20
Inventor 王婧婷陈琪马斌斌郎超
Owner WUXI ZHONGTIAN SOLID WASTE DISPOSAL CO LTD
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