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응집공정에서 PDA 를 이용한 온도 영향의 On - line Monitoring
성동모,윤태일 ( Dong Mo Sung,Tai Il Yoon ) 한국물환경학회 1997 한국물환경학회지 Vol.13 No.4
When the artificial kaoline suspension was coagulated with coagulants, the effect of pH were studied. After temperature of suspension were adjusted to 5℃ and 25℃, the experiments were conducted by the Camp type jar tester. The floc formation process was on-line monitored by PDA(photometric dispersion Analyzer) and the floc characteristics such as residual turbidity and mean floc size were analysed. Flocculation velocity at 25℃ was found to be faster than 5℃. Single inorganic coagulant use and the combined use of inorganic coagulant with the organic polymer showed similar coagulation characteristics. By the PDA results, the temperature effect in case of alum coagulation was smaller than the case of the coagulation by PAC or PACS.
성동모(Dong Mo Sung),윤태일(Tai Il Yoon) 한국물환경학회 1999 한국물환경학회지 Vol.15 No.1
The possibility of Hakic cheon municipal wastewater treatment by utilizing the alkali waste slurry from Oriental chemical company as a coagulant was investigated. Coagulants as the Lime, Alum, Ferric Chloride and waste slurry were tested in jar tester. The experimental results showed that the waste slurry could be used as a coagulant instead of lime. When the combined dose of waste slurry 5∼7.5% and ferric chloride 25㎎/ℓ obtained the optimum coagulation condition, and the analytical results showed that turbidity removal was 97%, T-P removal was 70% and COD_(Mn) removal was 30∼42%.