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RISS 인기검색어
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- 저자 : 노재순(Jai Soon Noh) (검색결과 1 건)
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김상구(Sang Goo Kim),최근주(Keun Joo Choi),오형석(Hyeong Seok Oh),노재순(Jai Soon Noh),황영도(Young Do Hwang),박은주(Eun Ju Park),손희종(Hee Jong Son),신판세(Pan Se Shin) 한국수처리학회 2002 한국수처리학회지 Vol.10 No.3
N/A Coagulation and filtration are basic treatment processes in rapid filtration system. Good performance of coagulation process can produce high quality of filtered water which is lower turbidity and particles water. Many factors which effect to coagulation are introduced by many studies but these results of studies are almost impossible to adjust to constructed water treatment processes. Therefore optimum design is very important for producing required water quality. We have researched variations of filtered water quality by coagulation conditions after back wash with filtration time. The most effective factor for a good coagulation is coagulant dose however inject point of coagulant had no effect to producing good filtered water and the lower mixing energy produced good filtered water than higher mixing energy. The period of direct filter`s maturing after coagulant dose is within ten minutes, it will be good indicator for a good coagulant dose. Long time of only air scour did not need to detach floc from filter media because floc detaching occurred not air scour alone but high rate of up flow water by air pressure, after the water in the underdrain moved to the surface of filter by air pressure, the turburance of filter media is stopped. Longer air scour did not effected to media disturbing, so for more achieve effectiveness of air scour, reair scour should be carried out after refill the back wash water in the space of underdrain.
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