http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
열수분해 탈리액 부하에 따른 활성슬러지 공정 미생물의 동력학 변화평가
김연권 ( Youn Kwon Kim ),박선욱 ( Sun Uk Park ),김홍석 ( Hong Suck Kim ),김지연 ( Ji Yeon Kim ) 한국수처리학회 2014 한국수처리학회지 Vol.22 No.4
As a microbial growth and limitation point of view, F/M ratio and C/N ratio are one of the most important parameters for process optimization in biological wastewater treatment process. Municipal sewage in Korea is characterized by extremely low content of carbon source and relatively higher portion of N source. Accordingly, it is necessary to dose external carbon source in order to obtain higher degree of carbon source within the process. Filtered-wastewater from thermal hydrolysis process(THP) will lead to maximize F/M ratio and to exchange microbial kinetic within the process. In this study, the effects of filtered-wastewater from THP as an alternative plan for increasing carbon source on the cell disintegration and COD solubility of waste activated sludge were conducted under well defined experimental conditions. During 5 hours, the values of specific nitrification rate(SNR) and specific de-nitrification rate(SDNR) were 0.24∼0.51mg/g/hr and 0.08∼0.25mg/g/hr, respectively. Specific phosphate release rate(SPRR) and Specific phosphate uptake rate(SPUR) values were 0.29∼2.47mg/g/hr and 0.22∼2.93mg/g/hr, respectively. The value of Specific substrate uptake rate(SSUR) for filtered-wastewater from THP is approximately 2.8 times higher than the value of SSUR for reference sample.
침전 가속화제로서 열처리 탈수 케익을 이용한 하수처리장 미생물의 침강성 개선 평가
김연권 ( Youn Kwon Kim ),윤수연 ( Su Yeon Yun ),김성필 ( Sung Pil Kim ) 한국수처리학회(구 한국수처리기술연구회) 2017 한국수처리학회지 Vol.25 No.5
It has been considered that a lot of informations for a affecting parameters and operating techniques are required to meet the water quality standards of effluent from sewage treatment plants (STPs). As a technical diagnosis point of view, the condition and performance of the clarifier is one of an important parameters directly affecting the water quality of effluent in STPs. The solid-liquid separation capability in clarifier is strongly dependent on the microbial settleability. As a result, the performance in STPs where microbial settleability reductions may cause deteriorates in the solid-liquid separation capability at the clarifier, and gradually deteriorates the water quality of effluent. This study was conducted to increase and stabilize the microbial settleability within a short period of time by dosing the thermal-treated sludge cake (TSC) as sedimentation accelerating additives when the microbial settleability deteriorates in STPs. All the results with the TSC were compared with magnetite samples as weighted coagulation Additives (WCA). The settling velocity of sludge formed with the TSC is almost 2 times faster than that of control sample. In the result, the TSC was proved to be the promising material for efficient sedimentation accelerating additives (SAA), because it led to similar sedimentation than other WCA.
김연권(Kim Youn Kwon),서인석(Seo In Seok),김홍석(Kim Hong Suck),김지연(Kim Ji Yeon) 대한토목학회 2006 대한토목학회논문집 B Vol.26 No.4B
최근, 활성 슬러지 공법에 대한 수학적 모델링은 폐수처리장의 설계와 운영에 있어서 매우 중요한 인자로 인식되고 있다. 그럼에도 불구하고, BNR 공정에서 미생물의 성장 및 호흡과 관련한 내ㆍ외부 기질의 이용 경로에 관한 정보는 여전히 부족한 실정이다. 본 논문에서는 ASM No.3와 비교되는 새로운 개념의 활성슬러지 모델을 제시하고자 한다. 미생물의 단계별 성장이론에 근거한 이 모델의 구조는 호기성 저장, 내부저장물질(ISCs; Intercellular Storage Compounds)과 외부기질 활용에 따른 미생물의 성장, 내생호흡과 내부저장물질을 이용한 호기성 호흡 등 5 단계로 구성되어 있다. 단계적 성장모델에 기초한 예측결과는 산소이용율(OUR)과 TCOD에 의한 실험결과에 있어 ASM No.3 의 결과보다 더욱 일치함을 나타냈다. Recently, mathematical modeling for the activated sludge process is important to design and control of wastewater treatment plant. Nevertheless, there is a lack of information regarding the pathway of substrate utilization between external and internal substrates in biological nutrient removal (BNR). In this research, a new activated sludge model (step growth model) is proposed and compare with ASM No.3. This model structure is consist of five processes; aerobic storage, growth on external substrate and stored intercellular storage compounds (ISCs), endogenous respiration and aerobic respiration of ISCs. The predicted results by the step growth model were more good accordance with the results of oxygen utilization rate (OUR) and TCOD experiment than that of the ASM No.3.
변형된 A2O 공정을 이용한 RO 농축수 처리 가능성 평가
김연권 ( Youn Kwon Kim ),서인석 ( In Seok Seo ),김지연 ( Ji Yeon Kim ),문용택 ( Yong Taik Moon ) 한국수처리학회 2011 한국수처리학회지 Vol.19 No.5
The various species in wastewater may have a direct influence on the microbial activity and efficiency in biological wastewater treatment process. Especially, characteristic of wastewater as influent from Reverse Osmosis(RO) brine water is fed also tends to affect the microbial behavioral characteristics within the process. In this research, lab-scale modified A2O process was operated and monitored to evaluate performance changing of biological nutrient removal during the 5th weeks. The evaluation of biological wastewater treatment and micro-organism acclimation were performed to treat RO brine water which contained high TDS and Cl-. As a result of acute microbial activity test at various RO brine water concentration, the optimum TDS concentration for microbial growth ranged from 4,000 mg/L to 7,000 mg/L. It was showed that the removal capacity of organics and nitrogen matter in A2O process was similar to the removal of those in general activated sludge process, and specific phosphate removal rate was not much affected by RO brine water characteristics. Therefore, activated sludge process is considered to have a potential to be applicable to RO brine water treatment if RO brine water concentration range is below the concentration at acute microbe activity test level.