논문실적
| 소석회와 CO2를 이용한 상수관로의 부식제어(Ⅰ) - 소석회 주입공정의 최적 운전인자 도출 |
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학술지명 대한상하수도학회
저자 손병용,변규식,김영일,이두진
발표일 2008-09-30
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The pH & alkalinity adjustment method by lime and carbon dioxide(CO2) for corrosion control in water distribution system was investigated to determine the optimum operational condition in lime adding process in water treatment plant(WTP). The mixing time at dissolution tank and sedimentation time at saturator for maintaining optimal turbidity condition of lime supernatant were 60∼75 minutes and 75∼95 minutes, respectively. There was no difference according to CO2 adding methods such as CO2 saturated water or CO2 gas. But, CO2 saturated water could be convenience at WTP in terms of pH control and quantitative dosing. To minimize generation of calcium carbonate products, the short time interval between adding of lime and CO2 is most important. The lime should be added below 32 mg/L for preventing pH rising and generation of calcium carbonate products at the heating condition |
