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임재명(Jae Myoung Rim),김병욱(Byeoung Ug kim),강성환(Sung Hwan Kang) 한국수처리학회 1997 한국수처리학회지 Vol.5 No.4
This research aims to improve the previous trench process. The modified process is consist of 3 processes; first settling tank, 3-staged second contact-filter, and last trench system. The experiments was operated by varying the HRT 8, 6 and 4 hours in trench. The results of laboratory experiments showed removal rate of 97∼99% of TBOD, 92∼98% of TKN, 91∼98% of T-P. From the results of this research, organic materials were removed in settling tank and nutrients in the trench stage. Therefore, it is recommended to replace the previous 3-staged contact-filter to 1-staged one, and to increase contact-time in trench system.
반송이 없는 Anoxic/Oxic 생물막공정을 이용한 돈사폐수처리
한동준(Dong Joon Han),임재명(Jae Myoung Rim) 한국수처리학회 1997 한국수처리학회지 Vol.5 No.3
This research aims to develop biofilm process for the organic and nutrient removal of the piggery wastewater. The four stage anoxic-oxic biofilm process was performed without recirculations of internal and sludge. In summery, the results are as follows : 1) The total removal rates of TCOD and SCOD were 94.8 percent and 92.8 percent at the influent volumetric loading rate of 0.4 ㎏COD/㎥·d, respectively. 2) The total nitrogen removal was affected by the temperature and the loading rate. The removal rates of total nitrogen were 85 percent and 67 percent at the influent volumetric loading rates of 0.08 ㎏N/㎥·d and 0.53 ㎏N/㎥·d, respectively. 3) Autooxidation by the organic limit was a cause of the phosphorus release in the aerobic biofilm process. And the phosphorus removal was affected by the nitrite build-up.
소규모 축산폐수 처리를 위한 RBC/AFBR 공정의 Package화
임재명,권재혁,류재근 江原大學校 附設 環境硏究所 1996 環境硏究 Vol.13 No.-
Using rotating biological contactor(RBC) with artificial endofleneus stage and aerobic fixed biofilm reactor(AFBR), organic material removal and biological nitrification of piggery wastewater has been studied at a pilot plant RBC was operated in the endogenous phase at a interval of every 25 days, The concentration of COD, BOO and TKN in influent wastewater were from 2,940 to 3,800 ㎎/L, from 1,190 to 1,850 ㎎/L and from 486 to 754 ㎎/L respectively, The maximum active biomass content represented as VSS per unit aera was 2.0㎎/㎠ and biofilm dry density of 17 ㎎/㎤ was observed at biofilm thickness of 900 ㎛. It was observed that the pilot scale RBC/AFBR process exhibited 72 percentage to 93 percentage of BOD removal, In order to obtain more than 90 percentage of BOD removal, the organic loading rate to the RBC/AFBR Process should be maintained less than 0,09 ㎥/㎡. day(125,9 gBOD/㎥.d), The TKN removal efficiencies was from 455 to 90,9 Percentage according to vary influent loading rate, It was estimated that the RBC/AFER Process consumed approximately 6,2 ㎎/L(as CaCO_(3) ) of alkalinity per 1 ㎎/L a of N_(3)-N oxidized as the nitrification took piace.
돈사폐수 처리를 위한 AFBG/ANHBR 공정의 Package화
임재명,권재혁,한동준 江原大學校 附設 環境硏究所 1996 環境硏究 Vol.13 No.-
This study was performed for package of piggery wastewater treatment system, inquired into component of organic matter and biodegradable characteristics in piggery wastewater and extracted removal efficiencies and operating conditions of aerobic fixed biofilm reactor/anoxic fixed biofilm re-actor(AFBR/ANFBR) process with Sun Lock (S/L.™) media, The component characteistics of or-ganic matter in piggery wastewater include 60 percentage of readily biodegradable COD, 25 percent-age of non-biodegradable COD and producted inert material by metabolism of m icroorganisms. In order to reduced sludge production rate and aggravation of water quality, endogenous respiration phase was accepted at first AFBR reactor. As a results of this operating condition, sludge production was minimized and removal efficiency was maintained stability. In order to obtain more than 90 percentage of BOD removal in AFBR/AHFBR process, the sur-face loading rate and volumetric loading rate to the AFBR should be maintained less than 17g BOD/㎡· day and 1.7 kg BOD/㎡· day respectively. Under this condition, BOD removal efficiencies of first AFBR, ANFBR and last AFBR exhibited above 80 percentage, 17 percentage and 40 per-centage, respectively. The removal efficiency of TKN and NHf-h at the loading rates below 5.60 gNH,-N/㎡ · day and 0.56 kg NH_(3)-N/㎥ ·day f·ere above 76 percentage and 82 percentage,respectively.
권재혁,김병욱,조원태,임재명 江原大學校 附設 環境硏究所 1999 環境硏究 Vol.16 No.-
This study was conducted to investigate the performance and biofilm characteristics of modified media(RUN 2) in comparison with conventional media(RUN 1) on wastewater treatment system. The results were as follows ; At four different HRT of 6, 12, 18 and 24hr, BOD removal efficiency was 65.5, 85.6, 92.2 and 91.9% in RUN 1 and 70.7, 88.7, 94.7 and 95.9% in RUN 2. Biofilm characteristics in each treatment system could be classed as following : i) In RUN 1, the biomass was 2.54 to 3.01㎎/㎥ and its thickness was 342 to 907μm and in RUN 2, this was 560 to 1,180μm and that was 2.54~3.01㎎/㎥. ii) The biofilm dry density was 32.60㎎/㎥ in RUN 1 and 39.06㎎/㎥ in RUN2, respectively. iii) The VSS contents pe unit area were 2,675~2,822㎎VSS/㎠ in RUN 1 AND 2,954~3,123㎎VSS/㎠ in RUN 2. In consider of organic removal rates and biofilm attachment characteristics, it was proved that modified media in RUN 2 was higher than conventional media in RUN 1.
생물막 반응조에서 돈사폐수의 유기물 특성 및 동력학계수 산정
한동준,임재명,권재혁 江原大學校 産業技術硏究所 1996 産業技術硏究 Vol.16 No.-
This research was performed for the fundamental data using a advanced treatment process of piggery wastewater. Characteristics of influent wastewater was divided with various methods in fixed biofilm batch reasctor. Fractons of organic were divided into readily bioderadable soluble COD(Ss), slowly biodegradable COD(Xs), nonbiodegradable soluble COD(S?),and nonbiodegradable suspended COD(X?). Experimental results were summerized as following : i)biodegradable organics fraction in piggery wastewater was asbout 88.1 percent, and fraction of readily biodegrasdable soluble COD was about 66.1 percent. ii)Fractions of nonbiodegradable soluble COD was 11~12 percent, and soluble inert COD by metabolism was producted about 6~8 percent. iii) Active biomass fraction of attached biofilm was about 54.7percent, annd substrate utilization rate and maximum specific growth rate of heterotrophs were 8.315 d and 3.823 d? respectively.