Advanced treatment of bio-treated Chinese patent medicine wastewater using ozone/peroxymonosulfate-upflow biological aerated filter

Publication date: Available online 21 February 2020Source: Chemical Engineering JournalAuthor(s): Guomin Tang, Yongbing Zhang, Yujiang Wei, Shuang Wang, Pei Liu, Zhehua Jia, Xuemin Yu, Fang MaAbstractThe advanced treatment of biotreated Chinese patent medicine wastewater (BCPMW) was urgently necessitated to meet the strictest wastewater discharge standard. In the present study, combined ozone/peroxymonosulfate oxidation and upflow biological aerated filter process (O3/PMS-UBAF) significantly integrated advantages of O3/PMS oxidation and UBAF, and has been demonstrated to be very effective in the advanced treatment of BCPMW. For dissolved organic matter (DOM) in BCPMW, O3/PMS oxidation efficiently degraded higher molecular weight (MW) fractions and non-biodegradable fractions. In addition, O3/PMS oxidation not only increased the overall removal of DOM but also enhanced the biodegradation rate of DOM. Therefore, the beneficial effect of O3/PMS oxidation may mainly be due to the special effect of increased biodegradability and the generalized effect on DOM. Finally, the results also indicated that compared with UBAF alone, O3/PMS-UBAF not only promoted the removal of low MW fractions (＜3kDa) but also inhibited the formation of higher MW fractions (3-10 kDa) that was generated by UBAF alone.
Source: Chemical Engineering Journal - Category: Chemistry Source Type: research