생물막 여과장치에 의한 하수의 처리

강용태,조봉연,Kang, Yong-Tae,Cho, Bong-Yeon 한국상하수도협회 1986 水道 Vol.34 No.-

폭기생물막(曝氣生物膜) 여과지(濾過池)의 여과저항(濾過抵抗)에 관한 연구(研究)

강용태,현길수,Kang, Yong Tae,Hyun, Kil Soo 대한토목학회 1992 대한토목학회논문집 Vol.12 No.2

본 연구는 사여과지(砂濾過池)에 대한 여과저항이론(濾過抵抗理論)을 기초로 하여 폭기생물막(曝氣生物膜) 여과지(濾過池)의 여과저항이론을 구명(究明)하는 것이다. 여과저항(濾過抵抗)에 크게 영향을 미치는 인자로는 사여과지의 경우 주로 현탁성 부유물질인 반면에 폭기생물막 여과지의 경우는 여층(濾層)내의 여재(濾材)표면에 부착된 미생물막(微生物膜)의 증식(增殖)과 SS성분의 부착 그리고 상승하는 기포(氣泡)의 정체 등이 여충내의 여재간극(濾材間隙)을 폐새(閉塞)시킴으로서 여과저항(濾過抵抗)을 발생시킨다. 이러한 영향 인자들은 사여과저항(砂濾過抵抗) 이론(理論)에 접목시킨 결과 폭기생물막(曝氣生物膜) 이론식(理論式)을 도출할 수 있었다. 따라서 본 연구에서 제안된 폭기생물막 여과저항 이론식을 pilot plant를 통한 수처리실험(水處理實驗) 결과 이론치와 실험치가 잘 일치함을 보임으로서 실제 여과지(濾過池) 설계시 적용가능함을 알 수 있었다.

저수온에서의 MASA시스템에 의한 질소제거효율 개선

강용태 ( Yong Tae Kang ),김연은 ( Yun Eun Kim ),손정호 ( Jeong Ho Sohn ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.1

Nitrogen removal in wastewater treatment is a matter importantly dealt with on the preservation of water environment. If the activity of microorganism falls down due to the low temperature of water, and moreover as denitrification efficiency falls down rapidly owing to decline of nitrification rate, there remains a task to improve such a kind of problem. The aim of this research is to improve nitrification and denitrification efficiency according to change of water temperature by MASA system(Modified ASA system) applying MAB procedure to reaerobic of Advanced Step Aeration system. Consequently I applied MAB to reaerobic to make the rate of nitrification be elevated. So the aim of this study was focused on the research of the characteristic of winter sewage disposal through the change of water temperature by applying the best condition of MLSS concentration and HRT of ASA system to MASA system. As a result of research of the treatment rate per water quality item of MASA system in low temperature (10.5~14.7°C), SS, BOD, CODCr, T-P, T-N, NH4+-N were processed more efficiently by 10% than existing ASA system, and by dispositing MAB with the percentage of 97.9%, 96.8%, 97.3%, 86.8%, 94.3%, 98.1% separately, they were approved to be more effective for biological nitrogen removal in low temperature than the existing ASA system.

고속침전여과에 의한 해저터널폐수 처리연구

강용태 ( Yong Tae Kang ),김연은 ( Yun Eun Kim ),손정호 ( Jeong Ho Sohn ),배종환 ( Jong Hwan Bae ),김희영 ( Hee Young Kim ),김남경 ( Nam Kyoung Kim ),송근관 ( Kune Kwan Song ),한상윤 ( Sang Yun Han ),황순주 ( Sun Ju Hwang ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.4

The purpose of this study is to investigate the characteristics of undersea tunnel construction wastewater and treatment using Highrate Clarifier filtration (HCF). The raw water characteristics of pH, turbidity, salinity, T-N and COD(Mn) were 10.2, 597 NTU, 15 ‰, 13.03 mg/L and 16.25 mg/L, respectively. The linear velocity (LV) of HCF were 300 and 500 m/day. As a result, the efficiency of turbidity and heavy metals removal at linear velocity of 300 m/day were higher than that at LV 500 m/day. For Fe and Mn reduction, the efficiency of HCF were in the range of 14~25% more efficient than that of HF.

터널폐수 처리를 위한 섬유여과 공정의 응집 전처리에 따른 최적운전조건결정

강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),송정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ),배종환 ( Jong Hwan Bae ) 한국수처리학회 2012 한국수처리학회지 Vol.20 No.3

The purpose of this study is to investigate the optimal operating conditions of fiber filter process for effective tunnel wastewater treatment. Tunnel construction wastewater was discharged into the ocean, The sea water polluted by the tunnel wastewater, The average concentration of raw water in SS, Turbidity, COD, TN, TP, Salinity and pH were respectively 675mg/L, 747NTU, 0.76mgIL, 3.gmg/L, 0.32mg/L, 1 5o and 7.46. The sampling port of filter bed depth was 30-100cm. And Filtration velocity of fiber filter process was 100-1000m/day. Suitable pre-treatment is required because of high turbidity for Tunnel wastewater treatment. As a result, the optimal operating conditions of fiber filter process are 1 000m/day of filtration velocity, 80cm of bed depth without coagulation and 1 000m/day of filtration velocity, 30cm of bed depth with coagulation, In 400NTU, turbidity of raw water without coagulation showed 2,601, 783won, which is more cost-effective than fiber filter process with coagulation.

염색폐수의 COD저감, 색도제거와 잉여슬러지감량을 위한 물리-생물학적 연속처리시스템의 적용

강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),한상윤 ( Sang Yun Han ),손정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.2

In this study, the RSFASA system and the RSFBF system as physical-biological process has been used instead of the pretreatment process of the flocculation and sedimentation process of SBR for improvement of effluent qualities. The result showed an optimal condition that the RSFASA system has been controlled as the average temperature of all reactor to above 30~32°c, the concentration of MLSS to 5000±100mg/L and the HRT of anaerobic reactor to 8hr, and the removal ratios of color, SS, CODMn are shown a 70~75%, 79~80% and 86~92% respectively. The treatment effect shows the highest in the case of the controlled system as the selector changed to an anaerobic condition in the RSFBF system and them the total anaerobic EBCT controlled to 6hr, and the removal ratios of color, SS and CODMn are shown a 73~82%, 83~91% and 85~90% respectively. There was no injection amount of coagulants in RSFASA system of pilot-plant used in the study. The excess sludge happened in rapid settling filter by the treatment capacity of 5m3 in daily treatment water amount was 0.44~0.46kg/day and the sludge happened in the bioreactor (Anaerobic-aerobic) was 0.65~0.67kg/day and in the biofilter was 0.55~0.58kg/day. Therefore, the sludge amount was reduced about 31~39% than the existing treatment system(2FSSBR) of N`s textile wastewater treatment cooperative.

침전 여과 시스템을,이용한 터널폐수 처리

강용태 ( Yong Tae Kang ),송근관 ( Kune Kwan Song ),손정호 ( Jeong Ho Sohn ),김연은 ( Yun Eun Kim ) 한국수처리학회 2012 한국수처리학회지 Vol.20 No.4

The purpose of this study is to investigate of sedimentation and characteristics of heavy metals removal for tunneling wastewater treatment. In the first experiment. Applied turbidity concentration was in the ranged 200~2,000NTU at bed depth of 50cm and Filtration velocity of 300m/day. In the second experiment, applied the turbidity concentration for raw water was in the ranged 1,000~6,000NTU. HRT of sedimentation was 15min 150min. The characteristics of raw ∼ water were pH 7.5, temperature 22.8 , salinity 15.2 and TDS 15.1g/L. As a result, raw water ℃ ‰ quality has a significant impact on the efficiency of the filtration. The sedimentation should be installed in pretretment process of the filtration because of high turbidity tunneling wastewater. The concentration of turbidity in the filtration influent should be pretreated with 400NTU. Therefore, the minimum HRT of grit chamber with turbidity concentration are 60,60,90 and 120min at 1,000, 2,000, 4,000 and 6,000NTU, respectively. For Al, Fe and Cd reduction, the removal efficiency were 53.0%, 70.5%, 66.8% respectively. This results show that turbidity, SS removal efficiency are similar to heavy metal removal efficiency in sedimentation.

공정 변화에 따른 침지식 막반응조의 처리특성과 중수도 적용성 평가에 관한 연구

강용태(Kang Yong Tae),정윤석(Jung Yoon Suk),조용현(Cho Yong Hyun),장성부(Chang Sung Pu) 대한토목학회 2003 대한토목학회 학술대회 Vol.2003 No.10

TRNSYS를 이용한 동적열부하 및 태양열 시스템의 최적화 계산

강용태(Yong Tae Kang),김효경(Hyo Kyong Kim),노승탁(Sung Tack Ro) 대한설비공학회 1988 대한설비공학회 학술발표대회논문집 Vol.1988 No.11

터널페수 처리를 위한 최적응집제 결정

강용태 ( Yong Tae Kang ),손정호 ( Jeong Ho Sohn ),김남경 ( Nam Kyoung Kim ),송근관 ( Keune Kwan Song ) 한국수처리학회 2012 한국수처리학회지 Vol.20 No.1

The objective of this study is to evaluate the optimum coagulant for efficient treatment of tunneling wastewater with high turbidity concentration of 790-827 NTU. The pH and dosage of coagulant were changed for determination of optimum coagulant for tunneling wastewater treatment. Characteristics of influent tunneling wastewater were: pH 6.94~7.05, Turbidity 790~827 NTU and SS 543~595 mg/L. Optimum coagulant was determined by jar-test using Alum. PSQ-M. PAC. PACS-II and FeCla as a coagulant. Based on the results of jar-test. optimum pH values were 9 for alum and PSO-M and 7 for PAC. PACS-II and FeCI3. respectively. Optimum dosages of coagulants were: alum 70 mg/L. PSO-M 10 mg/L. PAC 50 mg/L. PACS-II 10 mglL and FeCla 15 mglL. respectively. Operation costs of alum. PSO-M. PAC. PACS-II and FeCI3 were 127.6 won/kg. 118.9 won/kg. 15.5 won/kg, 3.3 won/kg and 3.6 won/kg. respectively. When considering optimum pH and dosage of coagulant. PACS-II coagulant was more effective than Alum, PSO-M, PAC and FeCl3.