Detection and Treatment Methods for Perfluorinated Compounds in Wastewater Treatment Plants

Applied Sciences

Miran Lee¹  Shun-hwa Lee²  Yeon-jung Cho²  Byung-Dae Lee³ 

[1] Daisung Green Tech, Seongnam, Gyenggi 13216, Korea;Department of Environmental Engineering, Yeungnam University, Gyeongsan 38541, Korea;Department of Health Management, Uiduk University, Gyeongju 38004, Korea;

关键词: perfluorinated compounds;    coagulation;    ozone;    chlorination;    activated carbon;   

DOI  :  10.3390/app9122500

来源: DOAJ

【 摘 要 】

We surveyed the variation in perfluorinated compound (PFC) concentrations entering urban wastewater treatment plants and then designed an optimal PFCs treatment method based on a pilot test. The PFCs influent concentration was found to be affected by the types of industries and operating rate. The concentration of PFCs in the wastewater treatment effluent was slightly lower than that of the influent. Thus, PFCs had not been adequately removed by the existing biological treatments. The pilot test results showed that about 10% of PFCs was removed by coagulation and precipitation, and the ozone and chlorine test showed that few, if any, PFCs were removed regardless of the oxidant dose. The activated carbon adsorption test showed that the removal significantly increased with empty bed contact time, with about a 60% removal in five minutes and over 90% removal in over 15 minutes. Therefore, a more stable and higher PFCs removal would result from continuous oxidation processes, such as ozone and adsorption processes involving activated carbon, rather than a single biological treatment.

【 授权许可】

Unknown