• Journal of the Korea Organic Resources Recycling Association
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• v.18 no.1
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• pp.66-72
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• 2010

This study was done to analyze the condition of combustion exhaust gas that is produced according to incinerator operating condition in A area Kyonggido. The boiler exhaust gas temperature, the oxygen concentration of boiler, the outgassing temperature of Semi Drying Sorber(SDS), the temperature of catalytic reactor, the concentration of NOx, SOx, CO, Hcl and Dust were investigated by change the temperature of incinerator. The concentration of SOx, CO, HCL and DUST were below 5 ppm as increase the temperature of incinerator however the concentration of NOx was increased from 40 ppm to 70 ppm as increase the temperature of incinerator. The boiler exhaust gas temperature and the temperature of catalytic reactor were not changed however the oxygen concentration of boiler was decreased gradually as increase the temperature of incinerator.

• Journal of the Korea Organic Resources Recycling Association
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• v.5 no.2
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• pp.57-64
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• 1997

This study was performed to investigate the characteristics of compost produced from the composting facility at Nanjido. The capacity of the facility is 10 ton/day. Feed material was food waste generated in Seoul. Moisture content of the compost product was 31% and conductivity was 2.6 mmhos/cm. The compost product met Korean quality standards and EC quality standards for VS and C/N ratio. In case of TOC and TKN, they were met with Japan quality standards. The water soluble-C/N ratio finally reached about 5 based on dry compost. The color of compost product was dark brown. The product had earthy smell. Heavy metal contents of the compost were below Korean quality standards by wet basis.

• Journal of Korean Society of Water and Wastewater
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• v.21 no.5
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• pp.539-549
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• 2007

To establish effective and prompt measures for energy conservation in public wastewater treatment plants in Korea, energy consumption rates in 233 utilities in 9 provinces and 7 metropolitan cities are investigated and compared to the rest of the world. Mean load factor for wastewater treatment utilities is 74.9% and those for influent pumps and aeration blowers are 56.2% and 61.0%, respectively. Mean electrical energy usages as the key performance indicators are $0.243kWh/m^3$ for overall sewage treatments and 2.07 kWh per unit kg BOD removal. Digester gas as one of major byproducts in the process amounts to $382,000m^3/day$ nationwide. While major part of the digester gas is used for sludge heating, only 7.3% of the gas is utilized for electricity generation. Both efficiencies for BOD removal and digestion gas generation are considerably lower than those in USA and EU utilities due to low concentration of organic material in influent wastewater. Such low energy regeneration, in turn, results in significantly higher energy consumption in Korean plants, compared to that in USA and EU ones.

• Journal of Animal Environmental Science
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• v.19 no.2
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• pp.169-176
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• 2013

This survey was conducted to investigate the present conditions of operational management in the 45 animal manure public resource center (APRC) in Korea. The regional distribution, processing capacity per year, capacity of liquid fertilizer storage tank, solid-liquid separation, utilization of facilities, odor reduction facility, on-site odor strength, complained in the community, liquid fertilizer sprayed area, use the Agrix, land application recipe, composting degree, quality management and general grading were surveyed and evaluated. General grading was divided with 5 stages (very good, good, fair, lack and bad). The number of evaluated "very good" animal manure public resource center was 7, and "good" was 5 and more than "fair" was 27. However, the number of evaluated negatively including "lack" and "bad" was occupied as 40% of the 45 animal manure public resource center.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.568-568
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• 2016

가축분뇨는 발생부터 처리, 유통 단계에 이르기까지 다양한 경로에서 비점오염이 배출되고 있다. 그러나 소규모 농가의 경우 수거에 의해 공공처리시설에서 처리되는 가축분뇨의 양은 매우 적고, 대부분 자체 자원화 시설에서 톱밥발효에 의한 퇴비화를 하는 등 관리 미흡으로 인하여 축산 농가로부터 배출되는 비점오염부하가 큰 실정이다. 또한 관리주체가 모호하고, 축산비점오염물질의 정량화 및 하천에 미치는 영향에 대한 연구가 미흡하여 관리 대책 마련에 있어 어려움을 겪고 있다. 이에 본 연구에서는 축산농가의 밀집지역을 대상으로 축산 비점오염물질이 강우시에 주변 하천에 미치는 영향을 조사 및 분석하여 향후 축산 비점오염원 DB구축에 기초자료로 이용하고자 연구하였다. 연구대상 지역은 경상북도 영천시 북안천 일대로 축산비점오염원에 대한 영향 파악을 조사하기 위해 하천의 상류부터 하류까지 총 5개의 지점을 선정하여 2015년도에 6개 강우사상에 대하여 모니터링을 수행하였다. 수문분석을 위해 조상대상지역의 강우량, 유속 및 유량 등을 측정하였으며, 수질분석은 수질오염공정시험과 Standard Method를 이용하여 BOD, TN, TP 등의 농도를 분석하였다(USEPA 1993). 모니터링의 결과를 이용하여 강우시 오염물질에 대한 EMC를 산정하고 각 소유역 내 축산 현황에 따른 하천의 수질을 평가하였다.

• Journal of the Korea Organic Resources Recycling Association
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• v.22 no.3
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• pp.68-75
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• 2014

Soluble nitrogen produced from anaerobic digestor is able to have a strong influence on the effluent water quality of municipal wastewater treatment plants during a winter season in particular. The modeling results using the GPS-X simulation software shows that the soluble nitrogen concentration generated from the anaerobic digestor is 214.1 mg/L in the return flow and 6.2 mg/L in the inflow of the primary settler higher than those in nonexistence of the anaerobic digestor, respectively. In the case of using a separation process (flotation thickener) in order to treat the return flow from the sludge treatment system, the soluble nitrogen concentration in the effluent from the separation process and in the inflow of the primary setter could be 6.0 mg/L higher and 0.7 mg/L lower than those of nonexistence of the process, respectively. The modeling results propose the need of the equipments to be able to remove the soluble nitrogen ($NH_3-N$) produced from the digestor in the improvement projects of anaerobic digestor in municipal wastewater treatment plants.

• Journal of Animal Environmental Science
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• v.16 no.1
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• pp.1-12
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• 2010

This survey was conducted to investigate the status and strategy of swine manure utilization of 109 swine farms in the Gyeongnam, Korea. The personal properties of owner, types of swine buildings, facilities and equipment for manure management, conditions for manure recycling and farming for recycling resources were surveyed. Age of farm owners were occupied as 44.1% for 50s followed by the 60s with one-forth and 40s with 22.9%. Educational background of farm owners, a high school graduate makes up the largest proportion of farm owners followed by a college graduation with 35.8%. The swine manure collection methods were occupied as 34.9% with totally slurry system and more than 50% slurry system with 34.9% of farms. The manure management cost per ton were occupied as more than two-third with 10,000 won~15,000 won. The cost will pay for manure management, 10,000 won~15,000 won per ton makes up the largest proportion of farm owners. Separator, loader and vehicle to collection, transportation of liquid manure were occupied as 72.5%, 44% and 10.1%, respectively. Recognition of the farming for recycling resources were occupied as 37.6%, however, 25.8% of swine farm owners don't know that. More than sixty percent of swine farms will take a recycling system according to the farming for recycling resources. Conclusively, we have a suggestion in order to promotion of the farming for recycling resources in the Gyeongnam with increasing the portion of recycling of swine manure in each county and revitalizing the marketing of the liquid and solid swine manure fertilizers.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.346-349
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• 2009

본 연구는 충청권 연안역의 아름다운 자연과 이를 관광자원화 할 수 있는 연안역 녹색공간조성을 위한 해안도로 기반 시설로서 연안역의 지형 및 기후조건을 고려한 해안도로시스템 기술을 개발하는 것이다. 이를 위해 해안경관을 고려한 도로계획기술, 연안기후 지형 및 기후에 강한 해안도로 경량포장시스템 등이 포함된다. 이러한 계획, 설계 및 시공, 유지관리 시스템 기술 개발 및 효율적인 구축을 통해 녹색성장의 연안역 개발 프로토타입을 구축하며 이를 통해 국토의 효율적 운영, 삶의 질 개선, 그리고 미래 신성장 동력 창출에 기여하고자 한다.

• KAPE Magazine
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• s.162
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• pp.8-9
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• 2010

봉영농장은 2002년 05월 10일 모돈 50두 규모로 시작해 현재 모돈 180두, 총 2,100여두를 사육하고 있다. 2007년 5월 7일 HACCP인증에 이어 2009년 3월에는 국내 최초로 양돈분야 '환경친화축산농장'으로 지정됐다. 환경친화 축산농장은 가축 사육밀도를 기준치 이하로 유지해야하고 가축분뇨를 자원화 해 전량 농지 환원은 물론 자연친화형 축사 조성, 악취 저감 시설을 설치해 생활환경을 저해하지 않을 것 등의 요건을 갖춰 심사기준을 통과했을 때 농림수산식품부가 인증하는 제도이다. 이러한 노력과 함께 위생적인 고품질의 규격돈을 생산하여 소비자들의 식생활 향상에 기여해 궁극적으로는 농장의 경영수익을 창출하고 환경 친화 축산을 실현하여 지속가능한 양돈업을 위해 부단히 노력하고 있다

• Journal of Korean Society of Forest Science
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• v.23 no.1
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• pp.45-48
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• 1974

결론적(結論的)으로 목재공업(木材工業)은 분산형태(分散形態)로 폐재(廢材)의 수집(收集) 및 그 종류(種類)도 다양(多樣)하므로서 자원화(資源化)로는 원료(原料)의 제약(制約), 생산규모(生産規模), 생산시(生産時)의 공해발생(公害發生), 제품의 수요 등 유동적(流動的)이며 상대적(相對的)인 가변인자(可變因子)가 많다. 그럴수록 그 특성(特性)을 충분(充分)히 살리는 집약적(集約的)이며 다변적(多邊的)인 이용(利用)을 꾀하면서 최신(最新)의 가공기술(加工技術)과 시설(施設)의 도입(導入)을 검토(檢討)하며 그의 연구지원(硏究支援)도 뒤따라야 하겠다.