• Title/Summary/Keyword: Odor removal

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Odor Removal Characteristics of Biofilters in Domestic Sewage Treatment Facilities Analyzing Composite Odor and Odor Quotient (복합악취와 악취농도지수 분석을 통한 국내 하수처리시설 바이오필터의 악취제거 특성)

  • Ko, Byung-Churl;Park, Young-Ho;Kim, Dong-Il;Lee, Min-Gyu;Kam, Sang-Kyu
    • Journal of Environmental Science International
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    • v.22 no.1
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    • pp.109-117
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    • 2013
  • The removal characteristics of composite odor and malodorous substances using 33 biofilters in sewage treatment facilities were investigated. The geometry mean values of composite odor and odor quotient were reduced by 52.7% and 59.2% at the outlet of the biofilters, respectively. The removal efficiencies of the biofiltes for the composite odor and odor quotient show a significant difference statistically(p=0.000<0.05). The median value of odor quotient of sulfur compounds was reduced by 69.1% at the outlet of the biofilter and the odor quotient of the sulfur compound at the inlet and outlet of the biofilter shows a significant difference statistically(p=0.000<0.05); on the other hand, those of the $NH_3$ and trimethylamine, aldehydes, VOCs and alcohols, organic acids do not.

A Study on Odor Removal of Landfill Site Leachate by Pyroligenous Liquid (목초액을 이용한 쓰레기 매립지 침출수의 악취 제거에 관한 연구)

  • 허광선;정의덕;백우현
    • Journal of Environmental Science International
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    • v.8 no.5
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    • pp.607-610
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    • 1999
  • The odor removal of landfill site leachate was carried out using pyroligenous liquid. The constituent elements of pyroligenous liquid and leachate were also analysed, employing Atomic Absorption Spectroscopy(AAS). Before order removal, the heavy metal ions such as Pb, Zn, Cu, Mn, Fe and Ni, in pyroligenous liquid were detected with ultra trace level. However, in this liquid, other metal ions such as As, Hg and Cd were not observed. The optimum condition for removing odor fromthe leachate was observed in 15 times dilution of pyroligenous liquid. Also, the degree of outlet odor was 1. Furthermore, the concentration of odor constituent compounds, e.g. $H_2S, NH_3, NH_2$ and $CO_2$ in the leachate was remarkably reduced. Finally, water quality of the leachate was improved.

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Development of Complex Module Device for Odor Reduction in Sewage

  • KIM, Young-Do;KWON, Woo-Taeg
    • Journal of Wellbeing Management and Applied Psychology
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    • v.4 no.3
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    • pp.1-9
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    • 2021
  • Purpose: This study was conducted to develop a module with higher removal efficiency and effectiveness by adapting two or more deodorization techniques for main cause of odor pollution exposed citizen living near water treatment facilities. Research design, data and methodology: To consider the standard, unity, electrical wire, compatibility of detachable device by installing two types of dry deodorization device within one module for easy replacement. Complex odor, H2S, NH3 were collected from sewage treatment facilities for evaluation of deodorization device. Results: Using the developed application in this study, removal efficiency of complex odor, H2S, NH3 were 93%, 100%, 82%, respectively. Conclusions: The H2S removal efficiency of deodorization device was higher than bio-filter system, which were currently used by sewage treatment. Further, the device should be considered for use in efficient odor removal system.

Removal Efficiency of odor substance Using Arctium Lappa Root extract (우엉발효추출물을 이용한 생활악취물질 제거효율 조사)

  • Lee, Dong-Sub;Park, Jin-Sik
    • Journal of Environmental Science International
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    • v.23 no.11
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    • pp.1953-1961
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    • 2014
  • Increasing public concerns over odors and air regulations necessitates the remediation of a wide range of odor substances for industrial and indoor purpose. Currently, the wet scrubbing technique by neutralization using oils is being used to treat odor substances such as Ammonia($NH_3$), Methyl Mercaptan($CH_3SH$), Hydrogen Sulfide($H_2S$), Methylamine($CH_3NH_2$), Acetaldehyde($CH_3CHO$). The chemical analysis is performed to analyze the composition of an Arctium Lappa Root extract by VOC analyzer(Phocheck 5000Ex, ION SCIENCE co.) The objectives of the this study are to clarify the possibility of the neutralization of odors sprayed in the fixed bed and determine the removal efficiencies for different input odor concentrations. It is found that Ammonia($NH_3$), Methyl Mercaptan($CH_3SH$), Hydrogen Sulfide($H_2S$), Methylamine($CH_3NH_2$), Acetaldehyde($CH_3CHO$) are significantly removed and their removal efficiencies are higher than 98%. The kitchen detergent with Arctium Lappa Root extract showed excellent removal efficiencies of odor substances and high possibility for the development of kitchen detergent with odor removal.

Application of Biofilter Using Fibril-form Matrix for Odor Gas Removal

  • Lee, Gwang-Yeon;Jeong, Gwi-Taek;Lee, Kyoung-Min;Snuwoo, Chang-Shin;Lee, Woo-Tae;Cha, Jin-Myoung;Jang, Young-Seon;Park, Don-Hee
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.247-251
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    • 2005
  • This research was performed for developing of biological treatment process of odor gas such as MEK, $H_{2}S$, and toluene, which is generated from the food waste recycling process. To establish the operational conditions of odor gas removal by small-scale biofiltration equipment, it was continuously operated by using toluene as a treating odor object. When the odor treating microorganisms were adhered to fibril form biofilter, high removal efficiency over 93% was obtained by biofilm formation. At 400 ppm of inlet odor gas concentration and 10 sec of retention time, the removal efficiency was 76% and 93% in 1st stage reactor and 2nd stage reactor, respectively. However, the removal efficiency remained over 97% at the operational conditions above 15 sec of retention time.

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Odor Reduction Technology in Sewage Treatment Facility Using Biofilter with Reed Grass(Phragmites australls) (갈대(Phragmites australls)수초를 적용한 바이오필터에서의 하수처리시설 악취저감기술)

  • Chung, Jin-Do;Kim, Kyu-Yeol
    • Journal of Korean Society of Water and Wastewater
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    • v.27 no.3
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    • pp.373-382
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    • 2013
  • In this study, a biological odor treatment system was proposed to remove odor(foul smell) materials causing several problems in the closed sewage treatment plant. This odor treatment system was composed of a two-step biofilter system in one reactor. The two-step biofilter reactor was constructed with natural purification layer in upper part and artificial purification layer in lower part. The reed grasses of water purification plants were planted in the surface area and mixed porous ceramic media were filled with the lower part of biofilter reactor. By using the above experimental apparatus, the ammonia gas removal efficiency was attained to 98.3 % and the hydrogen sulfide gas removal efficiency was appeared more than 97.7 % which shows more effective than the conventional odor removal process.

Removal of High Odor Concentration with Biofilter using Mixture of Earthworm Cast and Distillery Sludge (지렁이 분변토와 주정슬러지 혼합 배양액을 이용한 Biofilter에서의 고농도 악취제거)

  • Park, Jong-Woong;Jang, Seg-Joo
    • Journal of Environmental Health Sciences
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    • v.40 no.2
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    • pp.127-136
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    • 2014
  • Objectives: This study was conducted to investigate the removal of high odor concentration from swine wastewater treatment facility by full scale biofilter using liquid with deodorant mixed with earthworm cast and distillery sludge. Methods: The supply of the culture liquid to the microorganism on the media in the biofilter increases the activity and growth of biomass. The experimental equipment was biofilter tower with treatment capacity of 90 m 3/min. The experimental conditions included gas flow of $60m^3/min$, retention time of 20 sec, and gas/liquid ratio of 67. Results: With changing season from winter to summer, the inlet odor concentration of ammonia increased from 2.5 ppm to 29 ppm, and of hydrogen sulfide from 21 ppm to 91 ppm, respectively. The odor treatment system with biofilter using the culture liquid was stable when the high loading rate increased and showed excellent removal grade with an average of 96.7% for ammonia, and an average of 93.7% for hydrogen sulfide. The pH and SCOD in the recirculating culture liquid near the bottom of the biofilter tower decreased with operation time, but its influence on the odor removal rate was negligible, because the organic matter (SCOD) was replaced by some culture liquid supplied 2-4 times per day. Conclusions: The biofilter using culture liquid could successfully remove high odor concentration which was generated from swine wastewater treatment facility.

Evaluation of Malodor Release and Control Devices in Charcoal Manufacturing Facility (숯 제조시설의 악취물질 배출특성과 관리실태 조사 연구)

  • Jeong, Ju-Young;Seo, Byeong-Ryang;Kim, Jae-Hyuck;Chin, Sung-Min;Jurng, Jong-Soo
    • Journal of Environmental Science International
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    • v.21 no.7
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    • pp.883-890
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    • 2012
  • Emission characteristics of gaseous odor compounds emitted from the charcoal manufacturing process were investigated, and evaluated the odor removal efficiency of odor control devices. It was found that the measured odor dilution ratio of emission gases ranged from 10,000 to 44,814, which exceed largely the emission standard in the stack. Methylmercaptan, trimethylamine, hydrogen sulfide, acetaldehyde were turned out as major odor compounds of the charcoal manufacturing process. It was revealed that the odor removal ratio of odor control devices were very low due to the its improper maintenance and wrong design.

Removal of Taste and Odor by Powdered Activated Carbon Adsorption and Air Stripping (분말활성탄 흡착 및 탈기에 의한 이취미 제거)

  • Jun, Hang-Bae;Na, Kwang-Ju;Seo, Tae-Kyeong;Park, Sang-Min
    • Journal of Korean Society of Water and Wastewater
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    • v.22 no.4
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    • pp.455-460
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    • 2008
  • Powered activated carbon(PAC) has been widely applied for controling odor causing compounds(OCCs) from water treatment plants. Because of their volatility, the OCCs can also be removed from water by air stripping methods. In this study, OCCs removal was tested with PAC adsorption, air stripping, and both PAC adsorption and air stripping from the Taecheong lake water. Removal efficiency of OCCs in terms of threshold odor number(TON) were 39.6% by both PAC (15mg/L) adsorption and aeration for 30 min, 33.6% by PAC(15mg/L) adsorption alone for 30 min, and 22.9% by aeration alone for 30 min, respectively. OCCs could be removed up to 50% by aeration for 120 min without PAC adsorption. At an extended aeration with 15mg/L of PAC, OCCs removal occurred mainly by PAC adsorption within 30 min aeration while it continued by air stripping afterward. At simulated jar tests with the raw water, removal efficiencies of geosmin and MIB were 48.3, 36.1% by coagulation and sedimentation without PAC addition. With 15mg/L of PAC on the same jar tests, the removal efficiencies were 83.1, 60.1%, respectively. Without PAC, OCCs could be possibly removed by stripping during the agitation processes.

System Development for Removing Dust & Odor from Manufacturing Process of Resin Products (I) (수지제품 가공시 발생하는 분진 및 악취 제거 시스템 개발(I))

  • Yun, Huy-Kwan;Kim, Jae Yong
    • Applied Chemistry for Engineering
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    • v.20 no.2
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    • pp.218-222
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    • 2009
  • As we look into the related technologies at home and abroad, the odor and dust removal technologies did not make us satisfied because its removal method is not appropriate and its economical efficiency was low. If bad odor and dust were generated simultaneously, we should install two removal factories separately, and it made a big problem. Consequently, we investigated to obtain the related basic information for a new hybrid bag filter system which can remove both odor and dust at the same time, using bag filter with ACF (dual filter type).