A Study on Cost-effective Treatment of Wastewater and Odor Reduction for Southeast Asian Market Entry
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Purpose - The purpose of this study is to apply a cost effective ultrasonic odor reduction method that generated micro-bubbles using ejector to the Southeast Asian wastewater market. Research design, data, and methodology - A leather maker located in Ansan-city, Gyunggi-do, South Korea was sampled from the collection tank to select experimental materials. Experimental setup consisted of circulating water tank-air ejector-ultrasonic device, and circulating wastewater. Sample analysis was performed by CODcr, T-N, T-P, and turbidity by the National Environmental Science Institute. Results - Experimental results show that it is most effective in removing odors when the frequency range of ultrasonic wave is 60∼80 Khz and the output is 200 W. It showed that the concentration of complex odor dropped from a maximum of 14,422 times to a minimum of 120 times. Also, analysis of ammonia and hydrogen sulfide in specific odor substances has shown that they were reduced from 1.5 ppm to 0.4 ppm and from 0.6 ppm to 0.1 ppm, respectively. Conclusions - It is possible to shorten more than 12 hours in the treatment of micro-organisms. It can be seen that the processing time of odor after ultrasonic treatment in the pre-treatment facility is reduced by 25% when compared to the resultant micro-organisms after the chemical treatment, that is, the time of the bio-treatment of micro-organisms. Based on the results, it was confirmed that the pre-treatment method using the ultrasonic and the air ejector device of the experiment shows the effect of reducing the water pollutants and odor more effectively in a relatively short time than the conventional advanced oxidation method.
Abstract
Purpose - The purpose of this study is to apply a cost effective ultrasonic odor reduction method that generated micro-bubbles using ejector to the Southeast Asian wastewater market. Research design, data, and methodology - A leather maker located in Ansan-city, Gyunggi-do, South Korea was sampled from the collection tank to select experimental materials. Experimental setup consisted of circulating water tank-air ejector-ultrasonic device, and circulating wastewater. Sample analysis was performed by CODcr, T-N, T-P, and turbidity by the National Environmental Science Institute. Results - Experimental results show that it is most effective in removing odors when the frequency range of ultrasonic wave is 60∼80 Khz and the output is 200 W. It showed that the concentration of complex odor dropped from a maximum of 14,422 times to a minimum of 120 times. Also, analysis of ammonia and hydrogen sulfide in specific odor substances has shown that they were reduced from 1.5 ppm to 0.4 ppm and from 0.6 ppm to 0.1 ppm, respectively. Conclusions - It is possible to shorten more than 12 hours in the treatment of micro-organisms. It can be seen that the processing time of odor after ultrasonic treatment in the pre-treatment facility is reduced by 25% when compared to the resultant micro-organisms after the chemical treatment, that is, the time of the bio-treatment of micro-organisms. Based on the results, it was confirmed that the pre-treatment method using the ultrasonic and the air ejector device of the experiment shows the effect of reducing the water pollutants and odor more effectively in a relatively short time than the conventional advanced oxidation method.
참고문헌 (22)
- Cha, H. S., "Present State and Future Prospect for Microbubble Technology", Bulletin of food technology, 22(3), pp.544~552 (2009)
- Won-Mo Gal, "A Study on Improvement of Distribution Facility in Wholesale Agricultural Products Market", 유통과학연구, 16(2), pp.53~65 (2018), 한국유통과학회[DOI]
- S. L. Handforth, "Catalysts for Oxidation of Ammonia to Oxides of Nitrogen", Industrial & Engineering Chemistry, 26(12), pp.1287~1292 (1934), American Chemical Society (ACS)[DOI]
- 장재경, "단일반응기에서 마이크로버블-산소를 이용한 가축분뇨의 유기오염물질, 질소 및 인의 동시 제거", 대한환경공학회지, 39(11), pp.599~606 (2017), 대한환경공학회[DOI]
- 강상훈, "회전 운동이 이젝터 성능에 미치는 영향에 관한 연구", 한국산학기술학회논문지, 18(4), pp.544~549 (2017), 한국산학기술학회[DOI]
- 김현자, "음식물쓰레기 자원화시설의 방지시설 운영개선에 관한 연구", 실내환경 및 냄새 학회지, 8(1), pp.20~30 (2009), 한국냄새환경학회
- 이순화, "미세기포 액막화 부상법을 이용한 하수 2차 처리수의 인 제거에 관한 연구", 대한환경공학회지, 34(1), pp.42~48 (2012), 대한환경공학회[DOI]
- 권우택, "복합공정의 악취물질 제거효과 -스크러버, UV, 흡착의 조합-", 실내환경 및 냄새 학회지, 14(2), pp.85~92 (2015), 한국냄새환경학회[DOI]
- Ki-Tae Kwon, "Entry into the Southeast Asian Energy Market from the Sales Promotion Viewpoint", 유통과학연구, 15(10), pp.29~39 (2017), 한국유통과학회[DOI]
- 이준철, "복합공정 방지시설의 폐수처리장 악취 제거효율에 관한 연구", 실내환경 및 냄새 학회지, 15(4), pp.385~391 (2016), 한국냄새환경학회[DOI]
- Yasunari Maeda, "Generation mechanism of micro-bubbles in a pressurized dissolution method", Experimental Thermal and Fluid Science, 60, pp.201~207 (2015), Elsevier BV[DOI]
- Michio Sadatomi, "Micro-bubble generation rate and bubble dissolution rate into water by a simple multi-fluid mixer with orifice and porous tube", Experimental Thermal and Fluid Science, 41, pp.23~30 (2012), Elsevier BV[DOI]
- ‘06 Analysis of complaints against odor & ’07 Management direction for odor, "Ministry of Environment(ME)", 5~6 (2007)
- Water pollution process test standard, ES 04362.1c Total - ultraviolet, visible line spectroscopy, "National Environmental Science Institute", Ministry of Environment, 1~7 (2017)
- Water pollution process test standard, ES 04315.3c COD, Titration method, Potassium dichromate method, "National Environmental Science Institute", Ministry of Environment, 1~7 (2017)
- Water pollution process test standard, ES 04363.1b Total nitrogen-ultraviolet, visible-line spectroscopy-oxidation, "National Environmental Science Institute", Ministry of Environment, 1~6 (2017)
- Sadatomi, M., "Micro-bubble generation rate and bubble dissolution rate into water by a simple multi-fluid mixer with orifice and porous tube", Experimental Thermal and Fluid Science, 41, pp.23~30 (2012)
- Tsuge, S., "The latest technology on microbubbles and nanobubbles Ⅱ", pp.140~167 (2010), CMC publishing
- Takehiko, N., "Asian Water Development Outlook 2016 Strengthening Water Security In Asia and The Pacific. Asian Development Bank" (2016), Asian Development Bank
- Terasaka, K., "Development of microbubble aerator for waste water treatment using aerobic activated sludge", Chemical Engineering Science, 66, pp.3172~3179 (2011)
- Tsuge, S., "The latest technology on microbubbles and nanobubbles", pp.140~167 (2010), CMC publishing
- Zhou, Y., "Evaluation of humic substances during co-composting of food waste, sawdust and Chinese medicinal herbal residues", Bioresource Technology, 168, pp.229~234 (2014)