HBC링 자연포기형 생물막의 고농도 유기성폐수 처리특성

김명희 ( Ming-ji Jin ),이순영 ( Soon-young Lee ),원종훈 ( Jong-hun Won ),원찬희 ( Chan-hee Won ) 한국환경기술학회 2006 한국환경기술학회지 Vol.7 No.3

본 연구는 저비용-저에너지 고농도 유기성폐수 처리시스템 개발이 절실한 실정에 맞추어 HBC링 자연포기형 생물막을 이용한 고농도 유기성폐수의 수리학적부하에 따른 유기물처리와 유기물 용적 부하에 따른 유기물, 질소처리의 효율성을 분석하였다. 식품, 주정폐수 모두 수리학적부하 21.6~37.4 ㎥/㎡/d에서 실험을 진행한 결과 BOD₅의 유출수 농도는 수리학적부하가 증가함에 따라 감소하였으나, 수리학적부하 33.6~37.4 ㎥/㎡/d에서 BOD₅의 유출수 농도는 수리학적부하의 영향을 받지 않았으며, 폐수처리장 방류수 수질기준 30 mg/L를 만족하였다. 유기물 용적부하 식품폐수 0.19~0.77 ㎏ BOD/㎥/d, 주정폐수 0.46~1.08 ㎏BOD/㎥/d로 변화시키면서 실험한 결과 SS와 BOD₅는 유기물 용적 부하에 관계없이 평균 식품폐수 93.2%, 98.7% 주정폐수 94.9%, 98.5%의 높은 처리효율을 나타냈으며, 질산화율과 TN 제거율은 유기물 용적부하가 증가하며 따라 감소하는 경향을 나타냈다. 질산화율과 TN의 제거율은 평균 식품폐수 89.8%, 79.6%, 주정폐수 85.1%, 78.3%를 나타냈다. SS, BOD₅ 유출수 농도는 유기물 용적부하 0.7 ㎏BOD/㎥/d이하, 수리학적부하 33.6 ㎥/㎡/d에서 식품, 주정폐수 모두 폐수종말처리장 방류수수질기준 30 mg/L를 만족하였다. According to the requirement of developing low cost-energy equipment for treating with high concentration organic wastewater, natural aeration biofilm using HBC ring was employed in this study. A series of trials were analyzed to evaluate the efficiency of this equipment, such as the treatment efficiency of organic materials at different hydraulic loading rate and the treatment efficiency of organic materials and nitrogen at different organic loading rate. Food wastewater and brewery wastewater were treated at the hydraulic loading rate ranging from 21.6 to 37.4 ㎥/㎡/d. As the hydraulic loading rate increased from 21.6 to 33.6 ㎥/㎡/d, the effluent concentration of BOD₅ decreased. However, the effluent concentration of BOD₅ was not influenced when the hydraulic loading rate was 33.6~37.4 ㎥/㎡/d, and the effluent concentration of BOD₅ also satisfied the discharged water quality standard of wastewater treatment plant (30 mg/L). When the food wastewater and brewery wastewater were treated at the organic loading rate of 0.19~0.77 ㎏ BOD/㎥/d and 0.46~1.08 ㎏ BOD/㎥/d, respectively, the removal efficiencies of SS and BOD₅ were 93.2 %, 98.7 % and 94.9 %, 98.5 %, respectively, while they were both not influenced by the organic loading rate. As the organic loading rate increased the removal efficiencies of nitrous and nitrogen decreased, and the removal efficiencies could get to 89.8 %, 79.6 % for food wastewater and 85.1 %, 78.3 % for brewery wastewater. At the same time, the effluent concentration of SS and BOD₅ were both satisfied the discharged water quality standard of wastewater treatment plant (30 mg/L), when the organic loading rate was less than 0.7 ㎏ BOD/㎥/d and the hydraulic loading rate was 33.6 ㎥/㎡/d.

자연포기형 생물막공정에 의한 화학산업폐수 처리특성

김명희 ( Ming-ji Jin ),이순영 ( Soon-young Lee ),원찬희 ( Chan-hee Won ),곽규동 ( Gyu-dong Gwak ),엄진영 ( Jin-young Eom ),양기해 ( Gi-hae Yang ) 한국환경기술학회 2007 한국환경기술학회지 Vol.8 No.1

본 연구는 영세한 소규모 업체에서도 적은 비용부담으로 사용할 수 있는 오 · 폐수처리장치 개발이 필요한 실정에 맞추어 자연포기형 생물막공정을 이용한 난분해성물질을 포함한 고농도 화학산업 폐수의 유기물 용적부하와 수리학적부하에 따른 처리효율 분석을 통하여 자연포기형 생물막공정의 난분해성물질을 포함한 고농도 폐수 처리 효율성을 분석하고자 한다. 유기물 용적부하 0.2kg COD_Mn/㎥/d, 0.47kg COD_Mn/㎥/d, 0.78kg COD_Mn/㎥/d인 저율, 중율, 고율 살수여상의 운전범위에서 실험을 수행한 결과 유기물 용적부하 0.2kg COD_Mn/㎥/d, 0.47kg COD_Mn/㎥/d인 저율, 중율 살수여상의 운전범위에서 BOD₅, COD_Mn, COD_Cr 처리효율 모두 살수여상의 설계기준을 만족하며 안정적인 처리를 진행하였으나, 유기물 용적부하 0.78kg COD_Mn/㎥/d인 고율 살수여상의 운전범위에서 COD_Mn과 COD_Cr 처리효율은 설계기준에 다소 못 미치는 결과를 나타냈다. 수리학적부하 6.3㎥/㎡/d, 20.1㎥/㎡/d, 33.4㎥/㎡/d인 중속, 고속, 고속 살수여상의 수리학적부하 운전범위에서 실험을 수행한 결과 모든 운전조건에서 SS와 BOD5는 수리학적부하의 영향을 받지 않았으며, COD_Mn과 COD_Cr은 수리학적부하가 증가함에 따라 처리효율도 다소 증가하였으나 큰 영향은 받지 않았다. 따라서 경제적/효율적인 면을 동시에 만족시키기 위한 유기물 용적부하와 수리학적부하로 중율과 중속 살수여상의 운전범위에서 운전하는 것이 적정하다. In this study, natural aeration biofilm process was employed according to the requirement of development low cost-energy treatment equipment for small corporation. The efficiency of this equipment was evaluated at different organic loading rate and hydraulic loading rate to treat chemical wastewater which contains non-biodegradable matters. The chemical wastewater was treated under a trickling filter of organic loading rate at 0.2kgCOD_Mn/㎥/d, 0.47kgCOD_Mn/㎥/d and 0.78kg COD_Mn/㎥/d. when the organic loading rate is at low-rate of 0.2kg COD_Mn/㎥/d and intermediate-rate of 0.47kg COD_Mn/㎥/d, the removal efficiency of BOD₅, COD_Mn and COD_Cr can satisfied the design standard of general trickling filter process and the wastewater can be treated stably. However, when the organic loading rate is at high-rate of 0.78kg COD_Mn/㎥/d, removal efficiency of COD_Mn and COD_Cr can not satisfied the design standard of general trickling filter process. When the wastewater was treated at hydraulic loading rate of 6.3㎥/㎡/d, 20.1㎥/㎡/d and 33.4 ㎥/㎡/d, the removal efficiencies of SS and BOD₅ didn`t effected by hydraulic loading rate. While the removal efficiencies of COD_Mn and COD_Cr were increased by the increasing of by hydraulic loading rate, but the efficiencies were not distinct. To sum up, at the intermediate-rate of trickling filter, the effect of chemical wastewater treatment can be the economical and effective.

자연포기형 생물막을 이용한 주정폐수 처리에 관한 연구

엄진영 ( Jin Young Eom ),김명희 ( Ming Ji Jin ),션란 ( Ran Shen ),원찬희 ( Chan Hee Won ) 한국물환경학회 2007 한국물환경학회·대한상하수도학회 공동 춘계학술발표회 Vol.2007 No.-

UF/UV/오존/촉매 공정을 이용한 축산폐수처리 시스템의 현장적용 가능성에 관한 연구

나명한 ( Ming-han Luo ),이은송 ( Eun-song Lee ),김명희 ( Ming-ji Jin ),정태섭 ( Tae-seop Jeong ) 한국환경기술학회 2011 한국환경기술학회지 Vol.12 No.4

본 연구는 UF막에 의한 여과와 UV/오존/촉매에 의한 고급산화를 결합한 하이브리드공정으로 축산폐수처리의 현장적용 가능성을 살펴보기 위하여 현장실험을 수행하였다. 현장실험결과, CODCr, CODMn, BOD, T-N의 제거율은 대체적으로 순환유량이 높고, 반응시간이 길어질수록 높아지는 경향을 보였다. 본 시스템을 이용한 Pilot plant의 축산폐수처리에서 8주의 운전기간 동안 SS는 평균 99%, CODCr 93%, CODMn 70%, BOD 94% 및 T-N은 80%의 안정된 처리효율을 얻을 수 있었다. This study was carried out for the feasibility of the field application of a combination system with UF membrane filtration and a hybrid process of UV / ozone / catalytic advanced oxidation systems for swine wastewater treatment. Results from field experiments in pilot plant showed that removal efficiencies of CODCr, CODMn, BOD and T-N have a tendency to increase when the flow circulation is higher and the reaction time is longer. During operation period in 8 weeks with this system, the SS removal rate was stable around 99.9%, CODCr 93%, CODMn 70%, BOD5 94% and T-N 80% averagely.

열가수분해 및 수열결정화에 의한 구형 ZrO₂ 분말의 합성

조철희,김명희,최재영,김도경,Cho, Churl-Hee,Jin, Ming-Ji,Choi, Jae-Young,Kim, Do-Kyung 한국세라믹학회 2002 한국세라믹학회지 Vol.39 No.4

가열가수분해반응에 의하여 제조된 구형의 $ZrO_2$ 겔을 수열결정화시켜 순수한 $ZrO_2$ 분말과 $Y2_O_3$, CaO 등 상안정화제가 도핑된 $ZrO_2$ 분말을 합성하였다. 합성된 $ZrO_2$ 결정분말들은 평균 10nm 크기의 일차 입자들로 구성된 이차입자들이었다. 이차입자의 평균 크기는 $0.4{\mu}m$였고, 수열결정화과정에서 겔의 구형 형상이 그대로 유지되었으며 일차 입자들 사이에는 약한 응집으로 존재하였다. 입자모양, 크기, 상분율, 도핑된 분율 등을 SEM, TEM, XRD, ICP로 연구하였고 구형 겔의 수열결정화기구를 논의하였다. $ZrO_2$, $Y_2O_3$-doped $ZrO_2$ and CaO-doped $ZrO_2$ powders were prepared by hydrothermal crystallizing spherical $ZrO_2$ gel which had been synthesized by thermal hydrolysis reaction. After the hydrothermal crystallization process, the formed crystallized powders sustained its original spherical shape and had the mean particle size of $0.4{\mu}m$. The particles were composed of about 10nm sized primary particles. The agglomeration strength between the primary particles appears very weak considering that the spherical particles were broken into the primary particles during the pressing process. The particle shape, size, phase fraction and dopant content were analyzed and crystallization mechanism of spherical gel was discussed.

The characteristic of chemical wastewater degradation by advanced oxidation process

Ran Shen,김명희(Ming Ji Jin),Tae Seop Jeong,Chan Hee Won 대한환경공학회 2006 대한환경공학회 학술발표논문집 Vol.2006 No.12

정수장 내부 수질조절에 의한 부식지수 향상에 대한 연구

김성준 ( Sung-joon Kim ),김명희 ( Ming-ji Jin ),박영기 ( Young-ki Park ),윤정화 ( Jeong-hwa Yun ),전용태 ( Yong-tae Jeon ),원찬희 ( Chan-hee Won ) 한국환경기술학회 2012 한국환경기술학회지 Vol.13 No.1

이 연구는 낮은 경도와 알카리도의 원수를 사용하는 B정수장에서 내부수질조절을 통하여 부식지수를 개선하고자 수행되었다. 액상소석회의 투입농도의 증가에 의하여 pH, 알카리도, 칼슘경도가 증가하였으며, 이에 따라서 LI지수가 개선되었다. 그러나 액상소석회 투입농도가 15 mg/L를 초과할시 탁도가 증가하는 결과를 보였으며, 추가적인 농도증가에 의하여 pH가 수질기준을 초과하였다. 이에 따라서 적정 운영방안을 마련하여 1년간 실공정에 적용하여 운영한 결과 부식성 개선에 적합한 pH 및 칼슘경도가 유지되었으며 LI지수를 최대 -1.6까지 개선할 수 있었다. This research was carried out the improvement of corrosion index through water quality control in B water treatment plant using the source of raw water of lower hardness and alkalinity. pH, alkalinity, calcium hardness was increased depending on the increasing concentration of liquid calcium hydroxide, LI index has improved accordingly. when injection concentration of liquid calcium hydroxide exceed 15mg/L, we have a result that increasing turbidity and the pH levels of water quality standards were exceeded by added concentration. According to this results we establish the appropriate operational measures and apply full scale process for 1 year. As a result of this operation, we have appropriate pH level and calcium hardness about improving corrosion resistance and also LI index could be improved up to -1.6.

대기노출형 생물막에 의한 주정폐수 처리의 동력학적 연구

김성준 ( Sung Joon Kim ),김명희 ( Ming Ji Jin ),원찬희 ( Chan Hee Won ),나명한 ( Ming Han Luo ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.6

Characteristic of hydraulic loading rate and organic matter degradation rate constant (k) were reviewed applying Atmosphere-Exposed Biofilm to brewery wastewater treatment. Atmosphere -Exposed Biofilm can purchase in small business with low financial expenses. The characteristic of hydraulic loading rate was investigated by controlling hydraulic loading rate of 17.0, 25.3, 33.7, 42.0, 50.3, 58.7m3/m2/d and it was determined that the optimal hydraulic loading rate was 33.7 m3/m2/d. Organic matter degradation rate constant (k) was determined by different hydraulic loading rate of 17.0, 25.3, 33.7m3/m2/d and media packing length of 0.15, 0.3, 0.45m. In result, organic matter degradation rate constant was 0.0554 for 500mg/L of BOD5 influent concentration. The experimental value and the predictive value of BOD5 removal efficiency using Eckenfelder formula were analyzed comparatively. The correlation (R2) between experimental value and the predictive value was 0.87 showing relatively good interrelation in 25.3m3/m2/d of hydraulic loading rate. Therefore it was considered that the treatment efficiency of Atmosphere- Exposed Biofilm could be estimated more accurately using Eckenfelder model in 25.3m3/m2/d of hydraulic loading rate.

막과 AOP 공정을 이용한 난분해성 산업폐수 재이용 연구

김성준 ( Sung-joon Kim ),김명희 ( Ming-ji Jin ),전용태 ( Yong-tae Jeon ),정태섭 ( Tae-sub Jeong ),박영기 ( Young-ki Park ),원찬희 ( Chan-hee Won ) 한국환경기술학회 2012 한국환경기술학회지 Vol.13 No.1

본 연구는 UV, O₃, 촉매로 이루어진 물 재이용 시스템을 연구하였고 본 시스템 실플랜트를 제작하여 실험을 실시하였다. 이 시스템은 하이브리드 방식으로 막기술과 산화과정을 조합하였으며 폐수종말처리장 유출수에 적용한 결과 저비용 고효율의 효과를 얻을 수 있었다. 대상폐수의 성상과 재이용 하고자 하는 양에 따라 UV와 O₃량 등을 변경 가능토록 설계되었으며 8주동안 본 시스템을 운전한 결과 SS, BOD₅, COD_Cr, COD_Mn, T-N, T-P, 색도의 처리효율은 각각 92, 92, 90, 90, 70, 63, 90%를 보였고 총대장균과 일반세균은 모두 제거되었다. 환경부의 용도별 하수처리수 재이용 수질권고기준의 공업용수기준을 충분히 만족하고 있어 본 시스템이 산업폐수의 재이용을 위한 폐수 재이용 처리시스템으로 충분히 활용 가능하다는 결론을 얻었다. 추가적으로 본시스템으로 잘 처리가 되지 않은 인 혼합물의 처리를 위한 연구가 필요할 것이다. In this study, the water reuse system consisting of UV, O₃, and catalyst was developed and its performance was evaluated using a pilot plant in the treatment of the discharged water from the existing water treatment plant. Our system adopted the hybrid system, the combination of membrane technology and advance oxidation process, which results in low operation cost and high efficiency in the treatment of wastewater. The unique feature of our process is that the system was designed to easily adjust the operational conditions such as the amount of feeding UV and O₃ based on the quaility of target water. During the operation of pilot plant for 8 weeks, the average removal efficiencies for SS, BOD₅, COD_Cr, COD_Mn, T-N, T-P, and color were investigated to be 92, 92, 90, 90, 70, 63 and 90%, respectively. No bacteria were detected during the operation of the pilot plant. Consequently the quality of treated water was satisfied with the standard for water reuse issued by Ministry of Environment of Korea. It means that the treated water from our water process could be re-supplied as industrial water. The results obtained from our lab and pilot scale experiments showed sufficient evidence to prove that the treated wastewater from our system was good enough to be reused for the purpose of industrial water supply usage. More researches are necessary in the future to treat phosphoric compounds which were not effectively treated in out process.

연구논문 : LCA를 적용한 하천환경영향평가 방법

김성준 ( Sung Joon Kim ),김명희 ( Ming Ji Jin ),전용태 ( Yong Tae Jeon ),신선미 ( Seon Mi Shin ),최용승 ( Yong Seung Choe ),원찬희 ( Chan Hee Won ) 한국환경영향평가학회 2012 환경영향평가 Vol.21 No.1

In this research LCA methodology was adapted and analyzed in quantifying estimation of estuarine environment. The analysed objects of estuarine environment were construction methods, facility, and input material into water, and estuarine ecosystem. In this research the function of LCA of estuarine environment was river with the view of controling water, utilizing water, and hydrophilic function. According to the result of research, environmental damage indicator of facility was decreased 346 Pt from 453 Pt at pre-maintenance to 107 pt at postmaintenance. Among raw and subsidiary materials, remicon, stone-netting bag, and pebbles were showing heavy environmental load in the order. Evironmental impact of input material into water system was analyzed from 1,827 Pt environmental load before construction to 1,080 Pt of post-maintenance, and damage indicator was improved at 747 Pt. Water quality was improved from 1,827 Pt (before construction) to 1,080 Pt(after construction), and ecosystem was improved after maintenance. Environmental indicator in ecosystem was analyzed 427 Pt(before construction) to 348 Pt(after construction), and damage indicator of Sumnjingang riverine system was improved as much as 79 Pt. In the conclusion, estuarine environmental monitoring through LCA in the area of facility, input material into water and ecosystem showed that closeto- nature stream was 1,172 Pt better than artificial stream in environmental aspects.