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한국수처리학회(구 한국수처리기술연구회)> 한국수처리학회지> 미네랄계 수처리제를 이용한 조류 및 영양염류 제어

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미네랄계 수처리제를 이용한 조류 및 영양염류 제어

Algae and Nutrient Control by Using the Mineralized Coagulant

이복진 ( Bokjin Lee ) , 오혜철 ( Hye-cheol Oh ) , 안재환 ( Jae-hwan Ahn ) , 김영민 ( Youngmin Kim ) , 강희준 ( Heejun Kang ) , 김석구 ( Seog-ku Kim )
  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 한국수처리학회지 26권2호
  • : 연속간행물
  • : 2018년 04월
  • : 45-52(8pages)

DOI

10.17640/KSWST.2018.26.2.45


목차


					

키워드 보기


초록 보기


						
As an eco-friendly substitute to commercial coagulants, the Mineralized Coagulant was produced and its algae and nutrient control efficiencies were evaluated. The raw water of a reservoir (chlorophyll-a = 48.0 mg/㎥, total organic carbon = 95.3 mg/L) was treated with the mineralized coagulant and other commercial coagulants. After the coagulation, monthly analyses of chlorophyll-a, organic matters, and nutrient concentrations were performed twice. The mineralized coagulant showed 96% of chlorophyll-a and 94% of total organic matter removal efficiency while the range of all coagulants were 75% to 99% and 50% to 96%, respectively. For the nutrient, the mineralized coagulant showed the higher removal efficiency (83% for total nitrogen and 93% for total phosphorus) and the lower release from the coagulated algae than most of other coagulants.

UCI(KEPA)

I410-ECN-0102-2018-500-003799177

간행물정보

  • : 공학분야  > 환경공학
  • : KCI등재
  • :
  • : 격월
  • : 1225-7192
  • : 2289-0076
  • : 학술지
  • : 연속간행물
  • : 1993-2019
  • : 1304


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1점토광물과 키토산 hybrid bead를 이용한 호소의 영양염류 및 녹조 제거

저자 : 유성환 ( Sungwhan Yu ) , 최희정 ( Hee-jeong Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 3-13 (11 pages)

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The aim of this study was to investigate the nutrient and blue green algae removal using hybrid bead in the lake water. Hybrid bead is a composite bioadsorbent made by mixing sericite and chitosan. Therefore, hybrid bead has a variety of electric charges, so it has the advantage of removing nutrients and blue green algae that have various electric charges in the lake water. Hybrid bead removed successfully 90-96% of the nutrient and Chl-a in the lake water at the following optimal parameters: Temperature 25 °C, pH 7-8, mixing time 60 min, hybrid bead dosage 3 g/L. The relationship between TN, TP and Chl-a was highest obtained 0.999 and 0.9977, respectively. This indicates that nitrogen and phosphorus have a great influence on the eutrophication of rivers and harmful algal bloom. Hybrid bead is an eco-friendly blue green algal and nutrient remover that does not adversely affect the ecosystem. In addition, the cost is low and the efficiency is high, so it can be applied in the field.

2기후변화에 따른 적정 취수량 산정을 위한 유량분석

저자 : 임유성 ( Yu-seong Lim ) , 최윤영 ( Yun-young Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 15-26 (12 pages)

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The purpose of this study is to identify the continuously changing stream flow according to climate change through analyzing so that it can be used as ground survey data for current status of water source supply capacity of streams in the community and for possibility of future problems that may occur. About Bukcheon which is used as a water source in Sangju city, the river runoff was analyzed using the TANK model and at the same time, it was also analyzed using observation data. As a result of examining data for the analysis using the observation data, it was confirmed that the observations were carried out since 1942, and therefore a lot of data could be obtained. However, the water level-flow relationship curve to using those data was not developed and the data accumulated over a long period of time could not be used. Therefore, in this study, we analyzed the observation data using data from 2006, when the water level-flow relationship curve was developed. The TANK model analysis for comparison with the observed data was conducted from 1987 to 2016 using long-term runoff data using daily precipitation data. And the comparisons and analysis results using actual observation data were comapred from 2006 to 2016. Currently in Sangju city, Bukchon is used as a water source and it is confirmed that 12,600 ㎥/day(0.146 ㎥/s) of water is planned to be taken. As a result of analysis using actual observation data, Bukcheon stream flow rate is 0.062 ㎥/s. The analysis shows that the minimum water flow rate of 0.4317 ㎥/s, plus the maintenance flow rate, estimated using the data of the Long-term Water Resources Plan (2006~2020) (2006) should flow in order for Buckchon to function as a stream.

3재활용 건축 폐기물을 이용한 축산폐수처리 혐기성 소화조 발생 황화수소 제거 연구

저자 : 여인설 ( Inseol Yeo ) , 강광남 ( Gwangnam Kang ) , 김완수 ( Wansoo Kim ) , 박찬규 ( Changyu Park )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 27-33 (7 pages)

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Hydrogen sulfide (H2S) is corrosive and toxic malodorant produced during the anaerobic digestion process at livestock wastewater treatment plants. A variety of techniques have been developed effectively and economically to remove the H2S gas. Iron oxide is widely used as an absorbent in desulfurization system, and has been tried to improve its performance. One of the method is a surface modification using alkaline substances for increasing the removal efficiency of H2S caused by acid-base reaction. The aim of this study are to developed desulfurization absorbents using iron oxide with recycling building waste, and to select the optimum production and alkaline impregnation conditions. For these purpose, we conducted lab scale column test to compare with H2S removal efficiency depending on loading rate(10, 20, 30 w%) of NaOH and KOH solution, and then conducted field test to evaluate removal efficiency of H2S emitted from the anaerobic digestion reactor set on a test-bed using selected optimum absorbent. In the results of tests, the optimum impregnation condition was to be impregnated with 20 wt% NaOH, and also H2S was effectively maintained removal efficiency at over 99% during 75 days in the field test.

4하이브리드형 탈황메디아를 이용한 바이오가스 내 황화수소 제거

저자 : 정동기 ( Dong Gi Jung ) , 김종오 ( Jong Oh Kim ) , 안대훈 ( Dae Hoon An ) , 황준석 ( Jun Seok Hwang ) , 강광남 ( Gwang Nam Kang )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 35-43 (9 pages)

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The objective of this study is to test of applicability through the pilot scale using hybrid desulfurization media for the removal of hydrogen sulfide(H2S) in biogas, that generate in the anaerobic digestion processes in STP and can be utilized as renewable energy source. As a result, the 99% removal efficiency of H2S was obtained by applying hybrid media which can chemical adsorption mechanism of metal ions and biological mechanisms of microorganisms. Through the regeneration process of supplying oxygen of 0.5% of the biogas flow rate, the 99% removal efficiency of H2S was obtained during the operation period of 180 days. The adsorption amount of the hybrid desulfurization media was about 0.25 kg-H2S/kg-pellets.

5미네랄계 수처리제를 이용한 조류 및 영양염류 제어

저자 : 이복진 ( Bokjin Lee ) , 오혜철 ( Hye-cheol Oh ) , 안재환 ( Jae-hwan Ahn ) , 김영민 ( Youngmin Kim ) , 강희준 ( Heejun Kang ) , 김석구 ( Seog-ku Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 45-52 (8 pages)

다운로드

(기관인증 필요)

초록보기

As an eco-friendly substitute to commercial coagulants, the Mineralized Coagulant was produced and its algae and nutrient control efficiencies were evaluated. The raw water of a reservoir (chlorophyll-a = 48.0 mg/㎥, total organic carbon = 95.3 mg/L) was treated with the mineralized coagulant and other commercial coagulants. After the coagulation, monthly analyses of chlorophyll-a, organic matters, and nutrient concentrations were performed twice. The mineralized coagulant showed 96% of chlorophyll-a and 94% of total organic matter removal efficiency while the range of all coagulants were 75% to 99% and 50% to 96%, respectively. For the nutrient, the mineralized coagulant showed the higher removal efficiency (83% for total nitrogen and 93% for total phosphorus) and the lower release from the coagulated algae than most of other coagulants.

6타닌과 키토산 하이브리드 비드를 이용한 수용액의 Pb(II) 제거

저자 : 유성환 ( Sungwhan Yu ) , 최희정 ( Hee-jeong Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 53-64 (12 pages)

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In this study, hybrid beads were prepared using tannin and chitosan. Batch experiments were carried out to remove Pb(II) from aqueous solution using hybrid bead. According to the FT-IR analysis, the hybrid beads had carboxylic, carbonyl groups, carboxylic acids, and bonded-OH groups, which made it very easy to adsorb heavy metals. The adsorption of Pb(II) using hybrid beads was suitable for pseudo-second-order and Langmuir isotherms. The maximum adsorption capacity of Langmuir was 123.19 mg/g of Pb(II). The adsorption strength of Pb(II) to the hybrid bead was high and showed the isothermal adsorption characteristics of L type. In the thermodynamic experiment, ΔG° shows a negative value, and ΔH° and ΔS° show a positive value. It can be seen that the adsorption process of Pb(II) using hybrid bead is a spontaneous endothermic reaction and the affinity between adsorbent and adsorbate is very good. Hybrid beads can efficiently adsorb and remove Pb(II) as an inexpensive and environmentally friendly adsorbent.

7입상활성탄의 여과시간이 정수중의 6종 휘발성유기물질 제거에 미치는 영향

저자 : 김영진 ( Young-jin Kim ) , 현길수 ( Kil-soo Hyun )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 65-71 (7 pages)

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Volatile organic compounds (VOCs) as a micropollutant has been gradually increased in river water using as a drinking water source. This phenomenon has required to reduce VOCs in treated water by advanced water treatment system. The objective of this study, therefore was to investigate the influence of filtration time of granular activated carbon (GAC) on VOCs removal from drinking water. Column tests (volume 150 mL) packed with about 40 mL of GAC were carried out with artificial water using real river water. Applied empty bed contact time (EBCT) of GAC bed was 15 min. Influent VOCs concentrations were in the range of 1,1-dichloroethylene (1,1-DCE) <210 ㎍/L, 1,1,1- trichloroethane(1,1,1-TCA) <430 ㎍/L, carbon tetrachloride (CT) <25 ㎍/L, trichloroethylene (TCE) <350 ㎍/L, and tetrachloroethylene (PCE) <85 ㎍/L, and xylene <810 ㎍/L. As a result, the adsorption of the GAC bed filtrated during 3 years at bed volume (BV) of 192 below achieved the high removal for VOCs with removal efficiencies of approximately 94-97% except 1,1-DCE, 1,1,1-TCA and CT with removal of 72-86%. Removal of an aged GAC bed decreased with increasing BV, while the removal of reactivation and virgin GAC beds increased with increasing BV. These results indicate that the reactivation and virgin GAC beds are able to remove VOCs more effectively compared with aged GAC bed.

8소결온도와 쌀겨 투입량이 중력식-세라믹 필터의 기공형성과 pH가 다른 원수처리에 미치는 영향평가

저자 : 김연권 ( Youn Kwon Kim ) , 황광택 ( Kwang Taek Hwang )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 73-82 (10 pages)

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The 'safe drinking water' adopted as the 6th topic (Clean Water and Sanitation) of the United Nations' Sustainable Development Goals (SDG) is not only the theme of water but also the human rights, gender equality and education. Among the many researchers and NGOs that have been attempted under the name of appropriate technology, water purifier technology using ceramic filter is a representative solution as household purifier that is very well localized, but scientific review is very limited. In this paper, the effects of changes in the manufacturing conditions on the physical properties and flux of the ceramic filter were evaluated, and the effect of the pH change on the removal capacity of ceramic filter was measured. The experimental results showed that the higher temperature and the larger amount of rice bran dosage, caused the larger flux of the ceramic filter. It was found that the mixing method can increase the flux to the ceramic filter by the dry and the wet mixing method. Also, it was confirmed that the flux was slightly increased as the pH of the raw water was lower.

9몬테카를로 시뮬레이션을 이용한 하수처리장의 사후 경제성 분석

저자 : 김원규 ( Won Kyu Kim ) , 김주원 ( Joo Won Kim ) , 변성준 ( Seong Joon Byeon )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 83-92 (10 pages)

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The sewage treatment plant expansion and the new installation project were carried out before and after construction for reasonable business execution. B/C analysis method is used for general economic analysis. However, B/C analysis by single value may cause policy maker's wrongness due to lack of distribution characteristic. In this study, the Monte Carlo simulation is used in the economic analysis to overcome these shortcomings. The results of the general B/C analysis were 1.5305 for A sewage treatment plant (extension) and 0.5040 for B sewage treatment plant (new construction). The B/C results using Monte Carlo simulation showed 1.50 ~ 1.56 (70.5%) of A sewage treatment plant and 0.50 ~ 0.56 (66.2%) of B sewage treatment plant. The results of the economic analysis suggested by this probability distribution will be able to more flexibly determine the policies related to the sewage treatment plant.

10혐기성 소화에서의 가축분뇨와 음식물류 폐수의 혼합 비율에 따른 유기산 발생량에 관한 연구

저자 : 성낙창 ( Nak-chang Sung ) , 권민지 ( Min-ji Kwon ) , 정진희 ( Jin-hee Jung ) , 최영익 ( Young-ik Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 26권 2호 발행 연도 : 2018 페이지 : pp. 93-99 (7 pages)

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The overall food consumption in South Korea has increased along with economic growth. Especially, meat consumption has increased significantly, and the size of the animal production industry has also grown greatly. As a result, substantial amounts of livestock wastewater and food waste are being produced. Among them, anaerobic digestion is known as a method of acquiring energy by treating wastes and producing biogas at the same time. This anaerobic digestion process generates organic acids by acid-producing bacteria. When the amount of generated organic acids increases, the pH drops which might be toxic. The purpose of this study is to maintain the optimum pH during anaerobic digestion to control the decrease in digestion efficiency due to a drop in pH by simultaneously treating livestock waste, which have a relatively high pH, without using pH regulators. Three reactors, R1, R2, and R3, were used in this experiment, and each reactor contained a mixture of food waste and livestock wastewater at the ratio of 5:5, 7:3, and 3:7, respectively. After 25 days, R3, the reactor in which the food waste and livestock wastewater were mixed at the ratio of 3:7, showed the optimum or near-optimum organic acid concentration and pH values.

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