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Effects of different secondary biological treatment processes followed by flocculation and sand-filtration on subsequent DBPs control from sewage treatment plants
Qi, Weixiao; Zhang, Hua; Liu, Ruiping; Liu, Huijuan; Qu, Jiuhui
2019-03-18
Source PublicationSEPARATION AND PURIFICATION TECHNOLOGY
ISSN1383-5866
Volume211Pages:81-89
AbstractThe nature and chlorine reactivity of dissolved organic matter (DOM) in reclaimed water from sewage treatment plants (STPs) are quite important for assessing the risk of wastewater reuse. Elucidating relation between DOM and its fractions characterization with different treatment processes is quite important for selection of treatment processes focusing on disinfection by-products (DBPs) control. In this study, four classical STPs in Beijing (A similar to D) with different secondary biological treatment processes but all with flocculation and sand-filtration as advanced treatment process were selected to investigate DBPs formation potentials and DOM characterization variation during these processes and their relation. Chloroform, dichloroacetic acid (TCAA) and dichloroacetic acid (DCAA) dominated among four trihalomethanes (THMs) and nine haloacetic acids (HAAs) formation potentials respectively during chlorination of both secondary and sand-filtration effluents with the order of TCAA > chloroform > DCAA. Both THMs and HAAs formation potentials were positively related with DOC percentage for the hydrophobic fractions in the DOM. The bromine incorporation in THMs was obviously higher than that in HAAs. The especially higher bromine incorporation in D STP was probably due to the higher SUVA value in this STP with SBR as secondary biological treatment process comparing to those in the other three STPs. DOC and bromide removal, SUVA decrease were important elements for selecting secondary treatment process considering DBPs control. Flocculation and sand-filtration performed not well in removing DBPs precursors especially for chloroform and DCAA except for C STP, which had higher hydrophobic fraction percentage removal and molecular weight decreasing during the advanced treatment process. FTIR analysis revealed that flocculation and sand-filtration probably removed more aliphatic structures than aromatic or COO- structures. The absorption ratio of aromatic C=C, COO-/aliphatic CH3 peaks in D STP was the highest among the four STPs, which was consistent with the highest bromine incorporation in this STP.
Department水污染控制实验室
KeywordDissolved organic matter Sewage treatment plants Flocculation and sand-filtration Disinfection by-products Chlorination
Document Type期刊论文
Identifierhttp://ir.rcees.ac.cn/handle/311016/43238
Collection水污染控制实验室
Affiliation1.Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China
2.Tsinghua Univ, Ctr Water & Ecol, Beijing 100084, Peoples R China
3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China
4.China Natl Petr Corp, Safety & Environm Protect Technol Res Inst, Beijing 102206, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Qi, Weixiao,Zhang, Hua,Liu, Ruiping,et al. Effects of different secondary biological treatment processes followed by flocculation and sand-filtration on subsequent DBPs control from sewage treatment plants[J]. SEPARATION AND PURIFICATION TECHNOLOGY,2019,211:81-89.
APA Qi, Weixiao,Zhang, Hua,Liu, Ruiping,Liu, Huijuan,&Qu, Jiuhui.(2019).Effects of different secondary biological treatment processes followed by flocculation and sand-filtration on subsequent DBPs control from sewage treatment plants.SEPARATION AND PURIFICATION TECHNOLOGY,211,81-89.
MLA Qi, Weixiao,et al."Effects of different secondary biological treatment processes followed by flocculation and sand-filtration on subsequent DBPs control from sewage treatment plants".SEPARATION AND PURIFICATION TECHNOLOGY 211(2019):81-89.
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