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강용태 한국수처리기술연구회 1995 한국수처리학회지 Vol.3 No.4
The lower reaches of the Nakdong River, the longest river in Korea, is located on the water supply source for population of 10 million in Pusan Metropolitan City and Kyeongsang Namdo and a base of various industries. From the upper and the middle reaches of the river, the discharge of the wastewaters not adequately treated by existing secondary treatment plants have contaminated the river water and the estuary of the river through eutrophication; the existing plants consisted of the following liquid-stream unit processes: screening, grit removal, flow equalization, primary clarification, conventional activated sludge process (CASP) and disinfection (chlorination). This leads to a shortage of water resources as well as a coastal contamination. In order to solve these problems, this research proposed an advanced wastewater treatment systems such as Advanced Step Aeration (ASA) and Advanced Flocculation-Clarification-Stabilization plus Biofilm Filteration (AFB) system. To implement the advanced wastewater treatment processes, the existing secondary treatment processes may require modifications and the addition of adequate processes which can achieve the desired levels of nutrient removal such as nitrogen and phosphorus. The advanced treatment systems were divided into three functional zones; anaerobic, anoxic, and oxic (aerobic) conditions. We also laid out a scheme to increase the self-purification potential of the river through the reuse of the effluent from the FCS system plus reverse osomsis (RO) membrane with pretreatment unit, which is being used as part of a process to reclaim water from municipal secondary effluent containing salines.
강용태 대한설비공학회 2004 설비저널 Vol.33 No.3
흡수식 사이클을 이용한 에너지의 장거리수송 기술을 소개하고 경제성평가 결과를 제시한다. 현재 에너지수요 측면에서 가장 높은 증가율을 보이고 있는 것이 바로 대도시 및 산업단지의 냉$.$난방 및 급탕용 에너지이다. 냉$.$난방에 사용되는 에너지는 10$0^{\circ}C$미만의 저온으로서 고열원 에너지인 화석연료의 사용은 에너지사용 면에서 비효율적이다. 따라서 산업지 역에서 버려지는 폐열원등의 각종 미활용에너지를 이용하여 냉$.$난방부하를 충족시킬 수 있는 에너지 절약형 시스템의 개발이 매우 중요한 과제로 대두되고 있다. 일반적으로 미활용에너지 및 폐열에너지 공급지역은 소비지역으로부터 멀리 떨어져 있다. 지금까지 흡수식시스템은 냉동 및 냉방의 개념에서 기술개발 및 실용적운전이 이루어져 왔으나, 본 논문에서는 흡수식시스템을 이용한 에너지의 장거리수송 및 변환 기술을 소개하고자 한다.
강용태,김태기 동아대학교 건설기술연구소 2000 硏究報告 Vol.24 No.1
Currently an increase in domestic sewage and industrial wastewater causes serious water pollution in Korea. To solve water pollution problems, Conventional activated sludge process(CASP) is generally used in wastewater treatment plant, but this process is so ineffective in nitrogen and phosphorus removal. Even if CASP is the major process, it must be improved instantly so as to remove nitrogen and phosphorus. Otherwise, the serious water pollution problems can't be resolved with existing process. Therefore, this study carries out an investigation by removal efficiency of BOD, COD, SS, T-N and T-P in the ASA system, which is advanced wastewater treatment system applied to domestic wastewater an apartment located in the water resource area. The results of the study are followed ; A removal efficiency such as BOD, SS and COD is over 90 percent, and that of T-N and T-P also over 85 percent and 90 percent respectively. Thus, it shows that the ASA system has an excellent treatment characteristic that is not expected in the exist in CASP.
생물활성탄(BAC에 의한 상수 고도처리수의 수질예측 : 낙동강 하류유역을 중심으로
강용태,전유찬 한국수처리기술연구회 1994 한국수처리학회지 Vol.2 No.1
The objective of this study is to investigate the characteristics of biological activated carbon(BAC) beds on the removal of volatile and synthetic organic chemicals, such as alkyl benzen sulfornate(ABS), trihalomethane formation potential(THMFP), UV-254 absorbance(E_(254)), and so on, and to propose the formulas of predictive model of effluent quality by the BAC beds. This study was carried out at Water Treatment Plants(WTPs) located at the Nak-dong river basin. The results showed that the removal rates of the BAC were in the range of 65-80% for ABS, 60-70% for THMFP, 55-75% for E_(254) absorbance, and 50-65% for KMnO₄ consumption, respectively. For a model predicting for the water quality treated by the BAC beds obtained from sequential experiment in the WTPs, based on the results compared the calculated values of predictive equation with the one of pilot-plant experiment, the co-relationship degree for their values revealed a relatively good of approximately 82-87% regardless of the media size of the activated carbon and an adsorbed substances.