Removal of Dmethyl Phthalate from Water with Enhanced Coagulation Technology
ZHANG Peng,ZHENG Huai-li,DENG Xiao-li,JING Shao-jie,WANG Jing-jing,LIU Lan and YANG Bo
DOI:10.11835/j.issn.1674-4764.2011.04.025
Received January 12, 2011,Revised , Accepted , Available online July 01, 2015
Volume ,2011,Pages 157-161
- Abstract
The removal of Phthalate Esters (PAEs) from water was measured by using enhanced coagulation technology.Cationic coagulant poly-diallyl-dimethyl-ammonium-chloride (PDMDAAC) and polyacrylamide (CPAM) were employed to remove the dimethyl phthalate (DMP),and the residual concentration of DMP is determined by the high performance liquid chromatography (HPLC).During the coagulation/flocculation process,parameters such as coagulant dosage,pH value,and sedimentation time are investigated.The results show the use of coagulant PDMDAAC/CPAM together has better coagulation effect than PDMDAAC.DMP removal rate is 99.87% when initial DMP concentration is 0.50 mg/L,the addition of a PDMDAAC dosage 50 mg/L,the addition of a CPAM dosage 2.5 mg/L,pH value 6.0 and sedimentation time 3 hours.Therefore,the removal of PAEs by coagulation is effective,and the application of coagulation by PDMDAAC/CPAM in water supply will enhance the removal of PAEs and at the same time reduce the water turbidity.