DOI QR코드

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Optimal coagulant and its dosage for turbidity and total organic dissolved carbon removal

탁도와 총유기탄소 제거를 위한 최적응집제 및 투여량 선정 연구

  • Received : 2014.10.01
  • Accepted : 2015.03.12
  • Published : 2015.03.31

Abstract

Three coagulants, alum sulfate(alum), poly aluminum chloride(PAC) and poly aluminum silicate chloride (PASC), were used to remove low to high turbidity and TOC in surface and ground blended water. Laboratory experiments and pilot plant experiments were carried out to evaluate the optimal coagulant and its dosage. To determine the optimized coagulant and its dosage, the turbidity, TOC and pH were measured. The experimental results showed the best removal performance using PASC. The optimal dosage of PASC between 3-20 NTU was found to be 15 mg/L in the jar test. In the pilot test, a 15 mg/L PASC dosage was applied and resulted in the efficient removal of turbidity and TOC between 3.6-27 NTU. The removal efficiency of PASC increased with increasing turbidity and TOC.

Keywords

Coagulation;TOC;Turbidity;PASC;pH

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Acknowledgement

Supported by : 국토교통부, 농식품부