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보문 : 식물-광물 혼합제가 부영양 수체의 수질, 플랑크톤 및 microcystin-LR에 미치는 영향
김백호 ( Baik Ho Kim ),이주환 ( Ju Hwan Lee ),박채홍 ( Chae Hong Park ),권대률 ( Dae Yul Kwon ),박혜진 ( Hye Jin Park ),문병천 ( Byeong Cheon Mun ),문병진 ( Byeong Jin Mun ),최인철 ( In Chel Choi ),김난영 ( Nan Young Kim ),민한나 한국하천호수학회(구 한국육수학회) 2011 생태와 환경 Vol.44 No.4
We examined two reservoirs (lnkyung res. and Joongang res.) and two streams (Kyungan str. and Jecheon str.), all of which were eutrophic, during the 2010 warm season, to evaluate the water quality improvement activity (WQIA) of plant-mineral composite (PMC), which was previously developed to control suspended solids, including cyanobacterial bloom (Kim et al., 2010). We simultaneously measured both solid (S-MCLR) and dissolved microcystin-LR (D-MCLR), before and after PMC treatment, in the Joongang reservoir. Taking water body size and volume into account, we conducted the whole-scale experiment in the Inkyung reservoir, and mesocosm-scale experiments in the other three systems. The WQIAs of PMC were found to be comparatively high in SS (70~81%), TP (75~91%), BOD (65~91%), Chl-a (88~98%), phytoplankton(84~92%) and zooplankton(68~88%), except for the Kyungan stream, which was below 45% in all parameters. After PMC treatment, the concentrations of both SMCLR (47%) and D-MCLR (96%) decreased within two days, suggesting a mitigation possibility of hazardous chemicals such as agrochemicals and endocrine disrupters in the aquatic ecosystem. Our results collectively indicate that PMC is a useful agent to control suspended solids, including nuisance cyanobacterial bloom and their exudates, in an undisturbed water system with a long residence time.
남숙현 ( Sook-hyun Nam ),구재욱 ( Jae-wuk Koo ),김은주 ( Eun-ju Kim ),박재로 ( Jae-ro Park ),전숙례 ( Sook Lye Jeon ),박주현 ( Joo Hyun Park ),문병진 ( Byeong-cheon Mun ),황태문 ( Tae-mun Hwang ) 한국수처리학회 2016 한국수처리학회지 Vol.24 No.6
This study was carried out to investigate the coagulation performance of some natural and synthetic material to remove chlorophyll-a and suspended particles in water. This natural coagulant is made of vegetable substances and plant-mineral composites. The removal of chlorophyll-a and suspended particles as a function of time, dose and initial concentration are tested. The natural coagulant dosage is determined with jar tester method. Samples in this study are mixed with water with high contamination of several algae species. The chlorophyll-a removal rate was 98 % and BGA removal rate was 100 % in water with low concentration of chlorophyll-a(sample A). The chlorophyll-a removal rate was 86 % and BGA removal rate was 76 % in water with high concentration of chlorophyll-a(sample C). It could also improve particulate and organic matter removal efficiency, indicating that it was highly effective as the coagulant agent. Also, an optimal dosage of coagulant on sample C becomes 2 times to 3 times larger than sample A. The fluorescence spectroscopy method using EEM showed that the peak of phycocyanin and Chlorophyll-a was simultaneously removed after the coagulant treatment. This method will be useful tool as an monitoring device. As a result of experiment using Daphnia magna as an indicator of toxicity, the optimal concentration of natural coagulant used in this experiments did not have a significant effect on toxicity.