Citation: | LI Z C,PANG Y,CHEN S Q,et al.Occurrence and removal effect of per- and polyfluoroalkyl substances in each operating unit of typical wastewater treatment processes[J].Journal of Environmental Engineering Technology,2024,14(4):1311-1318 doi: 10.12153/j.issn.1674-991X.20240254 |
Per- and polyfluoroalkyl substances (PFAS) are new pollutants under key control in China, and wastewater treatment plants are important nodes for their entry into water bodies. Most of the current wastewater treatment plant processes are integrated after upgrading, and the removal effects of PFAS by each process are different. In order to explore the removal effect of the current typical upgraded wastewater treatment processes on PFAS, the characteristics and concentration of PFAS components in each operating unit of the improved A2O and improved OD processes in a sewage treatment plant in Beijing were analyzed, the contribution of different units to the removal of PFAS components was studied, and the effect and mechanism of the removal of PFAS by the two processes were discussed. The results showed that: (1) The short-chain substitution effect had emerged within the scope of the treatment plant, and the main PFAS in the influent of the two typical wastewater treatment processes were perfluoropentanoic acid (PFPeA), perfluorobutanoic acid (PFBA) and perfluorobutane sulfonate (PFBS). (2) The decomposition of PFAS precursors caused by biochemical treatment units and ultraviolet disinfection tanks, and the interception, filtration, adsorption and precipitation of PFAS by grates, MBR tanks and sedimentation tanks were important mechanisms for the change of PFAS occurrence characteristics in the two typical wastewater treatment processes. (3) The overall removal efficiency of total PFAS concentration by improved A2O and OD processes was 60.65% and 82.62%, respectively. The former had a prominent removal effect on PFPeA and PFBS, while the latter had a good removal effect on all short-chain PFAS except perfluorohexanoic acid (PFHxA). The upgrading of the wastewater treatment processes has improved the removal effect of some PFAS to a certain extent, and especially the improved OD process has a better removal effect on PFAS.
[1] |
曹莹, 张亚辉, 闫振广, 等. 典型全氟化合物PFOS/PFOA的生态风险及控制对策[J]. 环境工程技术学报,2017,7(1):96-101. doi: 10.3969/j.issn.1674-991X.2017.01.014
CAO Y, ZHANG Y H, YAN Z G, et al. Ecological risks and control measures of typical perfluorinated compounds PFOS/PFOA[J]. Journal of Environmental Engineering Technology,2017,7(1):96-101. doi: 10.3969/j.issn.1674-991X.2017.01.014
|
[2] |
孟令易, 田浩廷, 吕鲲, 等. 全氟化合物在微塑料界面的吸附行为研究[C]//第二次全国计算毒理学学术会议暨中国毒理学会第一届计算毒理专业委员会第二次会议. 兰州, 中国毒理学会计算毒理专业委员会, 2018.
|
[3] |
生态环境部. 重点管控新污染物清单(2023年版)[A/OL]. [2024-04-01]. https://www.gov.cn/gongbao/content/2023/content_5742208.htm.
|
[4] |
LOGANATHAN B G, SAJWAN K S, SINCLAIR E, et al. Perfluoroalkyl sulfonates and perfluorocarboxylates in two wastewater treatment facilities in Kentucky and Georgia[J]. Water Research,2007,41(20):4611-4620. doi: 10.1016/j.watres.2007.06.045
|
[5] |
GAGO-FERRERO P, GROS M, AHRENS L, et al. Impact of on-site, small and large scale wastewater treatment facilities on levels and fate of pharmaceuticals, personal care products, artificial sweeteners, pesticides, and perfluoroalkyl substances in recipient waters[J]. Science of the Total Environment,2017,601/602:1289-1297. doi: 10.1016/j.scitotenv.2017.05.258
|
[6] |
CHEN S Q, ZHOU Y Q, MENG J, et al. Seasonal and annual variations in removal efficiency of perfluoroalkyl substances by different wastewater treatment processes[J]. Environmental Pollution,2018,242:2059-2067. doi: 10.1016/j.envpol.2018.06.078
|
[7] |
马洁. 城市污水处理厂中短链全氟化合物的分布特性及迁移规律研究[D]. 北京: 中国科学院大学, 2017.
|
[8] |
马洁, 陈红瑞, 王娟, 等. 4种短链全氟化合物替代物在城市污水处理厂的污染特征研究[J]. 生态毒理学报,2017,12(3):191-202.
MA J, CHEN H R, WANG J, et al. Pollution characteristics of four short chain perfluorinated compound substitutes in municipal wastewater treatment plant[J]. Asian Journal of Ecotoxicology,2017,12(3):191-202.
|
[9] |
范庆, 邓述波, 周琴, 等. 城市污水处理厂中全氟化合物的存在及去除效果研究[J]. 环境污染与防治,2011,33(1):30-35. doi: 10.3969/j.issn.1001-3865.2011.01.008
FAN Q, DENG S B, ZHOU Q, et al. Occurrence and removal of perfluorinated compounds in municipal wastewater treatment plants[J]. Environmental Pollution & Control,2011,33(1):30-35. doi: 10.3969/j.issn.1001-3865.2011.01.008
|
[10] |
贺龙朝. 混凝沉淀与生物处理工艺对表面处理废水中NPs和PFCs的去除[D]. 哈尔滨: 哈尔滨工业大学, 2018.
|
[11] |
周云桥. 永定河-洋河流域新型污染物的污染特征与管理对策研究[D]. 北京: 中国科学院大学, 2017.
|
[12] |
BAI X L, SON Y. Perfluoroalkyl substances (PFAS) in surface water and sediments from two urban watersheds in Nevada, USA[J]. Science of the Total Environment,2021,751:141622. doi: 10.1016/j.scitotenv.2020.141622
|
[13] |
MONETA B G, FEO M L, TORRE M, et al. Occurrence of per- and polyfluorinated alkyl substances in wastewater treatment plants in Northern Italy[J]. Science of the Total Environment,2023,894:165089. doi: 10.1016/j.scitotenv.2023.165089
|
[14] |
PAN Y Y, SHI Y L, WANG J M, et al. Evaluation of perfluorinated compounds in seven wastewater treatment plants in Beijing urban areas[J]. Science China Chemistry,2011,54(3):552-558. doi: 10.1007/s11426-010-4093-x
|
[15] |
KIBAMBE M G, MOMBA M N B, DASO A P, et al. Evaluation of the efficiency of selected wastewater treatment processes in removing selected perfluoroalkyl substances (PFASs)[J]. Journal of Environmental Management,2020,255:109945. doi: 10.1016/j.jenvman.2019.109945
|
[16] |
KOTTHOFF M, MÜLLER J, JÜRLING H, et al. Perfluoroalkyl and polyfluoroalkyl substances in consumer products[J]. Environmental Science and Pollution Research,2015,22(19):14546-14559. doi: 10.1007/s11356-015-4202-7
|
[17] |
WANG S W, HUANG J, YANG Y, et al. First report of a Chinese PFOS alternative overlooked for 30 years: its toxicity, persistence, and presence in the environment[J]. Environmental Science & Technology,2013,47(18):10163-10170.
|
[18] |
WANG Z Y, COUSINS I T, SCHERINGER M, et al. Fluorinated alternatives to long-chain perfluoroalkyl carboxylic acids (PFCAs), perfluoroalkane sulfonic acids (PFSAs) and their potential precursors[J]. Environment International,2013,60:242-248. doi: 10.1016/j.envint.2013.08.021
|
[19] |
LENKA S P, KAH M, PADHYE L P. A review of the occurrence, transformation, and removal of poly- and perfluoroalkyl substances (PFAS) in wastewater treatment plants[J]. Water Research,2021,199:117187. doi: 10.1016/j.watres.2021.117187
|
[20] |
康心悦. A/A/O污水处理工艺微生物气溶胶逸散特性研究[D]. 北京: 北京建筑大学, 2021.
|
[21] |
LI L, GAO M, LIU J X. Distribution characterization of microbial aerosols emitted from a wastewater treatment plant using the Orbal oxidation ditch process[J]. Process Biochemistry,2011,46(4):910-915. doi: 10.1016/j.procbio.2010.12.016
|
[22] |
汪磊, 张彰, 张宪忠, 等. 污水处理厂中全氟化合物的污染研究[J]. 环境科学学报,2011,31(7):1363-1368.
WANG L, ZHANG Z, ZHANG X Z, et al. Removal of perfluorinated compounds by wastewater treatment plants[J]. Acta Scientiae Circumstantiae,2011,31(7):1363-1368.
|
[23] |
唐鑫如, 陈杰, 魏庆, 等. 污水厂各处理单元对全氟辛酸浓度的影响[J]. 环境科学与技术,2023,46(3):185-191.
TANG X R, CHEN J, WEI Q, et al. Effects of various treatment units in sewage plants on the concentration of perfluorooctanoic acid[J]. Environmental Science & Technology,2023,46(3):185-191.
|
[24] |
王凯, 郭昌胜, 张远, 等. 不同微生物处理工艺对全氟化合物的去除效果[J]. 环境科学研究,2015,28(1):110-116.
WANG K, GUO C S, ZHANG Y, et al. Removal efficiency of perfluorinated compounds with different microbial treatment techniques[J]. Research of Environmental Sciences,2015,28(1):110-116.
|
[25] |
范庆. 典型全氟化合物在污水厂的存在及混凝去除研究[D]. 北京: 清华大学, 2010.
|
[26] |
PAN C G, LIU Y S, YING G G. Perfluoroalkyl substances (PFASs) in wastewater treatment plants and drinking water treatment plants: removal efficiency and exposure risk[J]. Water Research,2016,106:562-570. doi: 10.1016/j.watres.2016.10.045
|
[27] |
张自红. 絮凝沉淀-生物法处理日化企业生产废水[J]. 安徽化工,2017,43(2):100-102. doi: 10.3969/j.issn.1008-553X.2017.02.032
ZHANG Z H. Treatment of daily chemical industry wastewater by coagulation, sedimentation and biological process[J]. Anhui Chemical Industry,2017,43(2):100-102. doi: 10.3969/j.issn.1008-553X.2017.02.032
|
[28] |
GUERRA P, KIM M, KINSMAN L, et al. Parameters affecting the formation of perfluoroalkyl acids during wastewater treatment[J]. Journal of Hazardous Materials,2014,272:148-154. ◇ doi: 10.1016/j.jhazmat.2014.03.016
|