• Journal of the Korea Organic Resources Recycling Association
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• v.21 no.3
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• pp.99-107
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• 2013

In this study, field scale test was conducted to estimate the TMDL coefficients (runoff and leachate:(${\beta}4$)(${\beta}5$)(${\beta}8$)) for the livestock resources applying to agricultural crop land as fertilizer, and the results were obtained as follows. Each waste reduction coefficient(${\beta}4$) was shown to be in the range of 0.94~0.75 for public waste treatment plants and 0.99~0.83 for private waste treatment in the analysis of BOD, COD, SS, T-N, T-P, TOC. Thus private plants showed higher rate. Waste treatment discharge into the land coefficient (${\beta}5$) was also shown to be in the range of 0.4.~0.24 for public plants and 0.75~0.16 for private plants, so it is much lower than other coefficients. However SS and T-P were shown to be much higher for land discharge in private plants than in public plants. Treatment coefficient in the public plants (${\beta}8$) appeared to be average 0.75 for T-P but over 90% treatment efficiency and also large deviation were observed due to 0.2 of some other treatment plants.

• Proceedings of the Membrane Society of Korea Conference
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• 1992.10a
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• pp.76-76
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• 1992

본 연구의 목적은 국내 섬유산업에서 문제시되는 염색폐수처리에 막분리공정의 적용가능성과 문제점을 실험실규모와 pilot 규모의 실험을 통하여 규명하는 것이다. 염색폐수는 섬유의 가공공정에 따라 염료, 분산제, 정염제, 반응제 등 다양한 유기물질과 무기염을 함유하며 온도가 10-90$\circ$C로 높은 것이 특징이다. 본 연구에서는 2종류의 Nanofiltration: NF40, XU45; 두종류의 복합막; BW30, SW30HR; 2종류의 Cellulose Acetate 비대칭막의 평막 Sample을 사용하여 합성염색폐수의 배제율과 압력변화에 따른 투과수에 미치는 영향을 조사하였다. 실제 혼합염색폐수의 처리는 2개의 2.5"$\times$ 40" Nanofiltration 모듈을 장착한 Pilot 장치를 염색단지 종합처리장에 설치하여 3개월에 걸쳐 시행하였다. 현재까지 얻어진 실험결과에 의하면 전처리공정의 효율롸를 통해 부유물질에 의한 Fouling을 최소화하고 폐수의 성분분석과 사용된 막의 표면분석을 통한 체계적인 조사가 필요하다. 염색폐수처리에 막분리공정이 기존처리방법과 비교하여 경제성을 가지려면 효율적인 막세척방법을 개발하여 투과율의 감소를 최소화시켜야 한다.

• Journal of Korean Society of Environmental Engineers
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• v.29 no.2
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• pp.214-219
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• 2007

66 micropollutants analyses in 9 wastewater treatment plants(WWTPs) along Nak-dong river were implemented to identify the concentrations and removal efficiencies before and after treatment processes. As a result of study, the concentration levels discharged from WWTP effluents to water system were below the water quality criteria and the levels of other studies. The removal efficiencies were 84.6%(DAF/CCR) and 81.6%(AC) for 1,4-dioxane. Phenol, Clphs and PAHs were removed 94.6%, 66.4% and 80.6% respectively by the activated sludge(AS) process. The removal efficiencies of Clbzs were 45.3% for the activated sludge(AS) process and 60.6% for the activated carbon(AC) process. However, other processes besides AS and AC, the removal efficiencies of Clbzs were very low(<20%). The sand filtration(SF) process that could remove particle matters showed the best efficiency for PCDDs / Fs removal$(\geq99%)$. However, in case of relatively low PCDDs/Fs concentration level in influent, the removal efficiency was not so high$(\leq50%)$.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 1999.10a
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• pp.443-444
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• 1999

악취는 냄새를 유발하는 기체상 물질이 사람의 후각을 자극하여 불쾌감이나 혐오감을 주는 상태를 말한다. 악취물질은 정유공장, 화학공장, 하수처리장, 분뇨 및 축산 폐수처리장, 매립장 등의 다양한 발생원이 있으며, 여러가지 복합된 화합물이 원인이 되어 악취를 유발한다. 단위 물질로서 황화수소(H$_2$S)는 계란 썩는 냄새, 메르캅탄(mercaptan)류는 야채 썩는 냄새, 아민류는 생선냄새 등의 특이한 냄새를 유발하며, 최저 감지값은 물질별로 상당한 차이를 나타내고 있다(이광묵, 1993).(중략)

• Journal of the Society of Cosmetic Scientists of Korea
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• v.25 no.1
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• pp.89-106
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• 1999

This research was undertaken to manage the waste treatment facility in cosmetic plants more effectively, The discharge and the treatment of pollutant in cosmetic plants were analyzed. And several factors which had an influential effect of the treatment cost, were found out. Effective management methods are proposed. Since average operating rate is estimated from 29% to 56%, the facility has an 44% to 71% surplus capacity. The pollutant removal rate influences highly on the treatment cost. The amount of MLSS is the factor that effects the removal rate. Chemical cost and the amount of the sludge are the influencing factors. To reduce the waste water treatment cost,-the saving of SV3O use and the management of MLSS amount are essential.

• Proceedings of the Korean Information Science Society Conference
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• 2001.10c
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• pp.484-486
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• 2001

지리적으로 분산된 컴퓨터의 정보 교환을 위해 탄생된 인터넷은 네트워크 응용 프로그램을 개발하기 위한 시스템 개발자들이 로컬 컴퓨터에서 발생하는 실시간(real-time) 데이터의 중앙관리를 위한 통신 수단을 제공한다. 본 논문은 지리적으로 분산된 하/폐수 처리장에서 발생되는 다양한 종류의 실시간 데이터에 대한 효과적인 중앙 관리와 이러한 데이터를 처리, 분석하여 필요한 정보를 즉시 각 처리장에 제공함으로써 처리장 사이의 정보 공유는 물론 감독기관의 각 처리장에 대한 효율적인 운영관리를 위한 인터넷 기반 원격 데이터 분석 시스템(RRDAS)의 설계 및 구현에 대해 논한다.

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.310-311
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• 2002

악취는 인간이 직접 후각으로 느끼는 환경오염의 지표로서 극히 낮은 농도에서도 피해를 유발하여 대기질 전반에 대한 불신을 초래하게 된다. 악취의 주요 발생원으로는 정유공장, 화학공장, 하수처리장, 분뇨 및 축산폐수처리장, 쓰레기 매립지 등으로 발생원이 매우 다양하고 여러 가지 복합된 화합물이 원인이 되어 악취를 유발시키는 것이 특징이다. 우리나라의 주거여건은 주변환경을 충분히 고려하지 못한 개발로 공업지역과 주거지역이 근접 또는 혼재하여 악취오염에 근본적으로 취약한 구조의 도시가 형성된 곳도 있다. (중략)

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.9
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• pp.2313-2321
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• 2014

A concentration meter is widely used at purification plants, sewage treatment plants and waste water treatment plants to sort and transfer high concentration sludge and to control the amount of chemical input. This study has been prepared for improving efficiency of operation on sludge processes and to establish a basic for factory automation by accuracy improvement and problem solution of sludge concentration meter. The concentration meter's accuracy and stability is improved by applying multi-beam sensors and minimum deviation linear average filtering. Furthermore maintenance without cut-off of water in sludge operation is possible by detachable sensors. The performance of multi-beam concentration meter has been variously verified by the pilot plant experiment.

• Proceedings of the KAIS Fall Conference
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• 2006.05a
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• pp.580-581
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• 2006

본 연구의 목적은 DTP 폐수를 나노여과막으로 여과하여 처리하는 공정에서 발생하는 농축수를 처리하는 공정의 개발에 있다. 특히 DTP 장치의 특성상 발생 폐수를 별도의 폐수처리장으로 수집, 이동 하지 않고 현장에서 처리하는 소규모 패키지 시스템을 개발하고자 하였다. 아런 목표를 달성하기 위해 효율적인 여과공정인 나노여과를 적용하였고, 이 때 발생하는 농축수는 오존이나 과산화수소와 같은 산화제를 이용하여 일부 처리하고 나머지는 감압농축 및 감량화를 농한 농축수 관리 방안을 연구 하였다.

• KSBB Journal
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• v.14 no.1
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• pp.76-81
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• 1999

Characteristics and oxidizing ability of both $NH_4-N$ and$NO^2$-N were examined for the strains isolated from wastewater treatment facilities and from natural systems by using Winogradsky columns. In case of $NH_4$-N, the most efficient strain was Nitrosomonas KB1 isolated from wastewater treatment facility of K corporation and in case of $NO_2$-N, it was Nitrobacter KB2 from the same site as Nitrosomonas KB1. For Nitrosomonas KB1, 91% of $NH_4$-N was oxidized after 4 days of cultivation. Optimal growth temperature and initial pH of Nitrosomonas KB1 were $28^{\circ}C$ and 7, respectively. In comparison to oxidizing rates with changing initial concentration of $NH_4$-N, the ammonia oxidizing rate was increased up to 6.7 mg/day for the initial $NO_2$-N concentrations for the region lower than 100 mg $NH_4-N/L$, but it was gradually reduced for the region higher than 100 mg $NH_4-N/L$. For Nitrobacter KB2 90% of $NO_2$-N was removed after culturing for 4 days. Optimal growth temperature and initial pH of Nitrobacter KB2 was $28^{\circ}C$ and 7, respectively. And the nitrite oxidizing rate was increased in proportion to the initial concentrations of $NO_2$-N up to 200 mg/$\ell$, and it was maintained almost 4.2 mg/day irrespective of initial $NO_2$-N higher than 200 mg/L.