지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2012.1
- 수록면
- 128 - 135 (8page)
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Objectives: This study was aimed at determining the optimum coagulation dosage in a high turbid kaolin water sample using streaming current detection (SCD) as an alternative to the jar test.
Methods: SCD is able to optimize coagulant dosing by titration of negatively charged particles. Kaolin particles were used to mimic highly turbid water ranging from 50 to 600 NTU, and polyaluminum chloride (PAC, 17%)was applied as a titrant and coagulant. The coagulation consisted of rapid stirring (5 min at 140 rpm), reduced stirring (20 min at 70 rpm), and settling (60 min). To confirm the coagulation effect, a jar test was also compared with the SCD titration results.
Results: SCD titration of kaolin water samples showed that the dose of PAC increased as the pH rose. However, supernatant turbidity less than 1 NTU after coagulation was not achieved for high turbid water by SCD titration.
Instead, a conversion factor was used to calculate the optimum PAC dosage for high turbid water by correlating a jar test result with that from an SCD titration. Using this approach, we were able to successfully achieve less than 1 NTU in treated water.
Conclusions: For high turbid water influent in a water treatment plant, particularly during summer, the application of SCD control by applying a conversion factor can be more useful than a jar test due to the rapid calculation of coagulation dosage. Also, the interpolation of converted PAC dose could successfully achieve turbidity in the treated water of less than 1 NTU. This result indicates that an SCD system can be effectively used in a water treatment plant even for high turbid water during the rainy season.
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참고문헌 (25)
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Bachand PAM / 2010 / Treatment with chemical coagulants at different dosing levels changes ecotoxicity of stormwater from the Tahoe basin, California, USA / J Environ Sci He
Campbell A / 2002 / The potential role of aluminium in Alzheimer's disease / Nephrol Dial Transplant 17 (suppl 2) : 17 ~ 20
Chen J / 2003 / Dependency of polyelectrolyte complex stoichiometry on the order of addition. 1. effect of salt concentration during streaming current titrations with strong
/ / The Martin hubbe's streaming current definitions and concepts
Bachand PAM / 2010 / Treatment with chemical coagulants at different dosing levels changes ecotoxicity of stormwater from the Tahoe basin, California, USA / J Environ Sci He
Campbell A / 2002 / The potential role of aluminium in Alzheimer's disease / Nephrol Dial Transplant 17 (suppl 2) : 17 ~ 20
Chen J / 2003 / Dependency of polyelectrolyte complex stoichiometry on the order of addition. 1. effect of salt concentration during streaming current titrations with strong
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