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Bacillus sp. 부착 여재를 사용한 여과시설의 비점오염원 처리장치 개발
이한슬 ( Han Seul Lee ),김진수 ( Jin Soo Kim ),신총수 ( Chong Soo Shin ),심상보,김달우,강민구 ( Min Koo Kang ),이상일 ( Sang Ill Lee ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.1
This study was conducted to reduce runoff by rainwater infiltration facility using attached growth with bacillus sp., which are reported to remove nitrogen and phosphorus as well as organic matter effectively. This study was investigated non-point pollutants removal efficiency of organic, nitrogen, and phosphorus in column using the media attached growth with bacillus sp.. To compare attached growth with bacillus sp. and detached media, two columns filled with perlite, zeolite, vermiculite, pumice, peat-moss was installed. In A column(attached growth with bacillus sp.), in case of infiltration velocity 30 mm/hr in high concentration of influent, it showed the removal efficiency(after aging term) is SS(suspended solid) 85.8±1.2 %, T-P(total phosphorus) 67.0±8.1 %, T-N(total nitrogen) 66.0±4.9 %, COD(chemical oxygen demand) 73.6±2.9 %, NH4+-N 72.7±3.0 %. In B column(detached media), in case of infiltration velocity 30 mm/hr in high concentration of influent, it showed the removal efficiency(after aging term) is SS 86.0±2.2 %, T-P 62.5±11.3 %, T-N 53.3±3.9 %, COD 34.6±3.7 %, NH4+-N 61.5±2.8 %. Removal efficiency of A column is better than B column. As the result from this study, using media with bacillus sp. can improve a effective removal of non-point source pollutants.
알루미늄 전기응집을 이용한 인공구리폐수의 영향인자별 제거율 경향과연속운전 실험결과
김진수 ( Jin Su Kim ),심재훈 ( Jae Hoon Shim ),이한슬 ( Han Seul Lee ),신총수 ( Chong Soo Shin ),이상철 ( Sang Cheol Lee ),이상일 ( Sang Ill Lee ) 한국수처리학회 2015 한국수처리학회지 Vol.23 No.5
This study was conducted to evaluate the treatment of copper in wastewater by using electrocoagulation. Most of industrial wastewater has treated to physical and chemical methods because industrial wastewater has biologic toxic. Therefore, electrocoagulation belonging to the electrochemical method is being used in variety of industrial wastewater treatment. It shows mainly high removal efficiency of heavy metal and turbidity. In this study, it was evaluated to copper removal efficiency by pH, reaction time and current density through jar-test experiment. In case of pH, copper concentration was slightly decreased at higher than pH 4. In case of reaction time, copper removal efficiency was 91.6 % at reaction time in 4 minute and more than 98 % at reaction time in after 6 minute. In case of current density, copper removal efficiency was rapidly increased to 0.0058 A/cm2. Base on value of jar-test experiment, continuous operating of electrocoagulation experiment was applied the hydraulic retention time(HRT) 4 minute and current density 0.0167 A/cm2. pH of wastewater was not changed. Results, average copper removal efficiency was 74.7 % and maximum removal efficiency was 79.1 % while operating 110 minute.