Development of the refuse derived fuel (RDF) from sewage sludge by using microwave-thermal hybrid drying process

( Han Seok Kim ),( Kyung Choul Park ),( Young Rip Han ),( Young Ik Choi ),( Byung Gil Jung ) 한국폐기물자원순환학회(구 한국폐기물학회) 2011 한국폐기물자원순환학회 추계학술발표논문집 Vol.2011 No.-

Development of the refuse derived fuel (RDF) from sewage sludge by using microwave-thermal hybrid drying process

Han Seok Kim,Kyung Choul Park,Young Rip Han,Young Ik Choi,Byung Gil Jung 한국폐기물자원순환학회 2011 한국폐기물자원순환학회 학술대회 Vol.2011 No.1

마이크로-나노버블 및 일반버블 산기장치 시스템의 산소전달효율 비교 연구

한영립 ( Young Rip Han ),최영익 ( Young Ik Choi ),윤태경 ( Tae Kyung Yoon ),이강춘 ( Gang Choon Lee ),정병길 ( Byung Gil Jung ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.5

The main objective of this study was to evaluate the comparative analysis of oxygen transfer efficiencies between MNB(Micro-nano bubble) and CB(conventional bubble) diffuser systems for application of wastewater treatment processes such as flotation, aeration, water reclamation and so on. The bubble size of the MNB diffuser system was shown to be below 0.5 ㎛, and a proper air flowrate was 1.0 L/min. When the proposed MNB system compared with the CB diffuser system, the overall oxygen transfer coefficient (KLa), standard oxygen transfer rate (N) and volumetric oxygen transfer rate (VOTR) values were 11.67 (13.18), 11.80 (13.08) and 3.23 (13.14) times higher for influent (effluent) dyeing wastewater in the same initial conditions at air flow rate (1.0 L/min) under standard conditions (20℃, 1 atm), respectively. Therefore, the MNB diffuser system is expected to be much better effective technology on water and wastewater treatment processes.

석유화학폐수슬러지와 유기성 폐기물 혼합에 의한 연소특성 및 고형연료 폐기물화 재활용에 관한 연구

한영립 ( Young Rip Han ),최영익 ( Young Ik Choi ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.2

This objectives of research are to figure out combustion characteristics with increasing temperature with petrochemical sludge by adding wasted organic matters which are waste electric wire, anthracite coal and sawdust, and to exam heating value and ignition temperature for using refused derived fuels(RDFs). After analyzing TGA/DTG, petrochemical sludge shows a rapid weight reduction by vaporing of inner moisture after 170℃. Gross weight reduction rate, ignition temperature and combustion rates represent 68.6%, 221.9℃ and 54.1%, respectively. In order to assess the validity of the RDFs, the petrochemical sludge by adding wasted organic matters which are waste electric wire, anthracite coal and waste sawdust. The materials are mixed with 7:3(petrochemical sludge : organic matters)(wt%), and it analyzes after below 10% of moisture content. The ignition temperatures and combustion rates of the waste electric wire, anthracite coal and waste sawdust are 410. 6℃, 596.1℃ and 284.1℃, and 85.6%, 30.7% and 88.8% respectively. In heating values, petrochemical sludge is 3,600 kcal/kg. And the heating values of mixed sludge (adding 30% of the waste electric wire, anthracite coal and waste sawdust) each increase up to 4,600 kcal/kg, 4,100 kcal/kg and 4,300 kcal/kg. It improves the ignition temperatures and combustion rates by mixing petrochemical sludge and organic matters. It is considered that the production of RDFs is sufficiently possible by using of petrochemical sludge by mixing wasted organic matters.

폐 PCBs의 미분쇄 공정 적용에 따른 유가금속 분포 특성 및 금속침출 향상에 관한 연구

한영립 ( Young Rip Han ),최영익 ( Young Ik Choi ) 한국환경과학회 2015 한국환경과학회지 Vol.24 No.2

The main objective of this study is to recovery valuable metals with metal particle size distributions in waste cell phone PCBs(Printed Circuit Boards) by means of pulverization and nitric acid process. The particle size classifier also was evaluated by specific metal contents. The PCBs were pulverized by a fine pulverizer. The particle sizes were classified by 5 different sizes which were PcS1(0.2 mm below), PcS2(0.20~0.51 mm), PcS3(0.51~1.09 mm), PcS4(1.09~2.00 mm) and PcS5(2.00 mm above). Non-magnetic metals in the grinding particles were separated by a hand magnetic. And then, Cu, Co and Ni were separated by 3M nitric acid. Particle diameter of PCBs were 0.388~0.402 mm after the fine pulverizer. The sorting coefficient were 0.403~0.481. The highest metal content in PcS1. And the bigger particle diameter, the lower the valuable metals exist. The recovery rate of the valuable metals increases in smaller particle diameter with same leaching conditions. For further work, it could improve to recovery of the valuable metals effectively by means of individual treatment, multistage leaching and different leaching solvents.

연구논문 : 마이크로-나노버블 반응조를 이용한 미생물성장 동력학 계수의 추정에 관한 연구

한영립 ( Young Rip Han ),정병길 ( Byung Gil Jung ),정유진 ( Yoo Jin Jung ),조도현 ( Do Hyun Cho ),성낙창 ( Nak Chang Sung ) 한국환경과학회 2010 한국환경과학회지 Vol.19 No.5

하수처리수의 재이용을 위한 정밀여과-역삼투막 2단 여과공정 적용시 투과성능 평가

한영립 ( Young-rip Han ),정병길 ( Byung-gil Jung ) 한국환경기술학회 2012 한국환경기술학회지 Vol.13 No.2

본 연구는 정밀여과-역삼투막(MF-RO) 2단 여과공정을 이용한 하수처리수(2차침전지 유출수, 모래여과지 유출수)의 막여과시 투과수량, 역세척 방법 및 투과유속 등의 변화에 따른 막오염 및 처리수의 특성 등 공정별 최적 운전조건 도출 및 공업용수로의 재이용 방안을 평가하고자 하였다. 실험결과 하수처리장 2차침전지 유출수(E-1) 및 사여과지 유출수(E-2)의 막여과(MF-RO)공정적용시 동일 운전조건(1회 여과주기(30 min 운전/1 min 역세정))에서 각각 평균 15.2L/cycle·module 및 20.3 L/cycle·module으로, 2차침전지에서 사여과 공정까지 거친 최종방류수를 이용한 재이용 방안이 더 효과적인 것으로 나타났다. 또한 Run 3 운전조건(운전압력 20 psi, 설계 Flux 256.4 LMH)에서 여과주기 당 평균 23.5 L/cycle·module의 여과수량과 회복율 98%이상을 유지하여 가장 안정적 조건으로 나타났다. 정밀여과-역삼투막(MF-RO) 2단 여과공정을 이용한 하수처리수의 생산수질은 하천유지용수, 공업용수, 농업용수 등 모든 기준치를 만족하여 지역특성에 맞는 선택적인 하수처리수의 재이용이 가능할 것으로 판단된다. The objectives of this research are to investigate permeate, flux variations and backwashing methods according to characteristics of pretreatment of the wastewater by means of two stage microfiltration-reverse osmosis(MF-RO) membranes for both effluent wastewater(E-1) and effluent of sand filtration(E-2) and to evaluate the reclamation of wastewater for industrial water. The results show that averages of permeate with the two stage microfiltration-reverse osmosis(MF-RO) membranes for wastewater(E-1) and effluent of sand filtration(E-2) are 15.2 L/cycle·module and 20.3 L/cycle·module when a same operation condition(30 min operation and 1 min backwashing). Consequently, the results presented in this paper show that treating with the two stage microfiltrationreverse osmosis(MF-RO) membranes for effluent of sand filtration(E-2) is a better method. Moreover, the operation conditions for Run 3 (operation pressure: 20 psi and design flux: 256.4 LMH) are the most stable conditions which provided that average permeate is 23.5 L/cycle·module and recovery efficiency is 98%. It is possible to provide river maintenance water, industrial water and agricultural water with reclamation of wastewater treated with the two stage microfiltration-reverse osmosis(MF-RO) membranes.

염색폐수의 생물학적 처리효율 향상을 위한 마이크로-나노버블 오존산화 장치의 적용에 관한 연구

한영립 ( Young-rip Han ),이기형 ( Ki-hyung Lee ),정진희 ( Jin-hee Jung ),강동효 ( Dong-hyo Kang ),최영익 ( Young-ik Choi ) 한국환경기술학회 2011 한국환경기술학회지 Vol.12 No.2

본 연구는 기존 오존산화(conventional bubbles ozonation; CB-OZ) 시스템의 단점인 낮은 오존용해효율 및 처리효율을 증가시키기 위한 방안으로 마이크로-나노버블 오존산화(micro-nanobubbles ozonation; MNB-OZ) 시스템을 이용한 오존 용해특성을 살펴보고, 또한 염색폐수 처리수의 공업용수 재이용을 위한 처리특성 및 생물학적 전처리로서 염색폐수의 생분해 특성 등을 평가하는데 그 목적이 있다. 본 연구에 사용된 염색폐수는 B시 소재 염색폐수처리장에 유입되는 원수와 최종처리수를 대상으로 하였으며, 실험장치는 마이크로-나노버블 발생장치와 오존발생장치로 구성된 유효용량 400L의 MNB-OZ 시스템을 사용하였으며, 또한 비교실험을 위해 같은 용량의 CB-OZ 시스템을 사용하였다. 실험결과 MNB-OZ 시스템을 이용하여 0.5 ㎛ 이하의 미세기포를 발생시켜 물질전달속도가 크게 향상됨에 따라 오존의 접촉효율이 증대되고 오존의 높은 용해도를 기대할 수 있어 경제적인 효과도 클 것으로 예상되었다. MNB-OZ 시스템을 이용한 염색폐수 처리수의 오존산화 실험을 통해 공업용수의 재이용기준인pH 6.5∼8.5, SS 10 mg/L 이하, BOD 6 mg/L 이하, 탁도 10 NTU 이하, 대장균군수 1,000 이하를 모두 만족하여 공업용수로서의 재이용 가능성을 엿볼 수 있었다. 또한 염색폐수 원수의 MNB-OZ 시스템 적용결과 생분해도의 지표인 BOD₅/COD_Cr 비가 초기 0.32에서 0.48로 증가하여 생물학적 처리를 위해 적당한 값인 0.4 이상의 값을 만족하여 MNB-OZ 시스템을 통해 생분해도의 향상을 가져왔으며, 기타 TOC, SS, 색도, 탁도 UV₂₅₄등의 제거효율이 각각 15.6%, 74.7%, 70.7%, 63.0%, 32.6%로 조사되어 난분해성 유기물, 유해 유기화합물 등을 다량 함유한 고농도 염색폐수의 오염부하량을 전처리 단계에서 저감시켜 생물학적 처리시설에 도입함으로서 고농도폐수의 안정적이고 효율적인 처리가 가능할 것으로 사료된다. The main objectives of this research are to investigate characteristics of ozone solubility due to low solubility of traditional ozone generators, evaluate the treatment characteristics of reclaiming textile wastewater for industrial water, and analyze characteristics of biodegradable of the textile wastewater for biological pre-treatment by means of micro-nano bubbles ozonation(MNB-OZ) system. The textile wastewater used in this research was obtained from influent and final effluent of the textile wastewater in B city in South Korea. There is a 400 L reactor which consists of a micro-nano bubble system and a ozone generator for this experiments. As a result of generating micro-nano bubbles by using of the MNB-OZ system, the size of micro-bubbles was shown to be below 0.5 ㎛. It improved ozone solubility due to higher ozone transfer rates. Consequently, the shorter ozonation time clearly indicates the lower power costs. The reported results clearly indicated that the MNB-OZ system can be effectively and inexpensively. Results of the experiments through the MNB-OZ system in this study satisfy all reclaiming standards as industrial water: pH 6.5~8.5, SS 10 mg/L or below, BOD5 6 mg/L or below, turbidity 10 NTU or below, Coliforms 1,000/100 mL or below. Therefore, there is a possibility of the reclaiming of the textile wastewater as industrial water. Moreover, an index of biodegradable, that is BOD₅/COD_Cr (reasonable ratio value; 4.0), increased from 0.32 to 0.48. when influent textile wastewater was applied by the MNB-OZ system. Removal efficiencies for TOC, SS, color, turbidity and UV₂₅₄ were 15.6%, 74.7%, 70.7%, 63.0% and 32.6% respectively. Influent textile wastewater contains persistent organic pollutants and harmful organic compounds that were ozonated and assessed of biodegradability. By doing this, treatment of recalcitrant influent textile wastewater could be feasible with the employed MNB-OZ system effectively and safely.

선박용 고도수처리장치에서 MBR 복합 적용에 따른 SBR 공법의 침전공정 제어를 통한 평가

최영익 ( Young-ik Choi ),윤영내 ( Young-nae Yoon ),서민성 ( Min-seong Seo ),이슬기 ( Seul-kee Lee ),한영립 ( Young-rip Han ),성낙창 ( Nak-chang Sung ),정진희 ( Jin-hee Jung ) 한국환경기술학회 2015 한국환경기술학회지 Vol.16 No.5

본 연구는 국제해사기구(IMO)에서 채택한 MEPC. 227(64)의 기준에 부합하는 선박용 오수처리장치를 개발함에 있어 SBR 공법을 적용한 고도수처리장치에 MBR 복합 적용에 따른 SBR 반응조 침전시간 제거 가능성을 평가하는 것에 그 목적이 있다. 이를 위해 실험 중 10분 간격으로 DO를 측정하였으며 최종 유출수의 T-N 농도를 측정하여 유입수 대비 유출수의 제거율을 구하였다. 원수는 실험을 위해 제작된 화장실에서 배출된 오수를 이용하였으며 SBR 반응조의 경우 폭기 360분, 교반 120분으로 진행되었으며 침전시간은 생략하였다. 반응조의 MLSS 농도는 3,500 mg/L 이고, 폭기량은 121 L/min이며 생산수량은 1.2 L/min으로 진행되었다. 실험 결과 DO는 폭기 상태에서 최대 4.33 mg/L, 교반 중 무산소 상태에서 0.27 mg/L로 나타났으며 T-N의 유입수 대비 유출수 평균 제거율은 71.78%로 나타났다. 이는 MEPC. 227(64)의 기준(70% 제거율)을 달성한 것으로, 따라서 SBR 공법에서 MBR을 복합 적용 시 SBR 반응조의 침전시간을 제거하는 것이 가능하다고 판단된다. The objective of this study was evaluation of possibility for deleting sedimentation at an advanced wastewater treatment plant for shipboard that can satisfy the standards of IMO MEPC. 227(64). DO was measured at 10 minute intervals during the experiment and removal efficiency was determined by measuring the T-N concentration in the effluent water. Raw water was supplied from the toilet built for experiment. SBR process was conducted with aeration 360 mins, mixing 120 mins and settling period was omitted. This experiment was conducted with MLSS concentration, 3,500 mg/L, amount of air supplied 121 L/min and intake treated water 1.2 L/min. Average of DO in the aeration period and in the anoxic period were 4.33 mg/L and 0.17 mg/L respectively. And average removal efficiency of T-N is 71.78%. This research can achieve the MEPC. 227(64). Therefore, it is possible to delete sedimentation process in SBR reactor when SBR process is connected with MBR process.

Effect on the Rice Quality improvement by compost treatment of soil testing in Reclaimed land

Young-Hun Moon(문영훈),Young-Rip Kwon(권영립),Byung-Koo Ahn(안병구),Dac-Hyang Kim(김대향),Seong-Soo Han(한성수) 한국토양비료학회 2011 한국토양비료학회 학술발표회 초록집 Vol.2011 No.5