摘要
药品和个人护理品(Pharmaceuticals and personal care products,PPCPs)的环境危害及修复治理日益受到重视,为揭示满江红对含PPCPs生活污水的净化效果,以典型PPCPs吉非罗齐、卡马西平及满江红为供试材料,采用室内模拟培养试验,研究满江红在不同培养时间(1、2、4、8 d)和不同PPCPs初始浓度(0、1、10、100、1000μg·L^(-1))生活污水中的生长状况,以及对常规污染物[氨氮(NH_(3)-N),硝态氮(NO_(3)-N),总磷(TP),化学需氧量(COD)]和PPCPs的去除率。结果表明,随着生活污水中PPCPs初始浓度的增加,满江红相对生长率及其耐受指数呈先增加后降低的趋势,且满江红在100、1000μg·L^(-1)PPCPs处理下生长受到抑制;与对照相比,1、10μg·L^(-1)PPCPs处理下满江红对氮、磷的去除效果显著增强(P<0.05),但100、1000μg·L^(-1)PPCPs处理下对氮、磷的去除效果显著减弱(P<0.05);在不同PPCPs初始浓度处理下,满江红对COD去除作用显著,且COD去除率随PPCPs初始浓度的增加而增加;满江红对吉非罗齐和卡马西平去除效果随培养时间的延长而增强,吉非罗齐去除率随PPCPs初始浓度的增加而增加(1000μg·L^(-1)PPCPs处理除外),而卡马西平去除率随PPCPs初始浓度的增加而降低。满江红对PPCPs有良好的去除效果,对生活污水中NH_(3)-N以外的常规污染物也有很好的去除能力,可作为含典型PPCPs生活污水的修复治理植物。
Environmental hazards and remediation of pharmaceuticals and personal care products(PPCPs)have recently received growing attentions.Thus,investigating the purification effect of azolla on domestic sewage containing PPCPs is important.Representative PPCPs gemfibrozil,carbamazepine,and azolla were used as test materials,and indoor simulation culture tests were conducted to investigate the growth of azolla in domestic wastewater at both different incubation times(1,2,4,and 8 d)and different initial concentrations of PPCPs(0,1,10,100,and 1000μg·L^(-1)),as well as the removal rates of conventional pollutants(ammonia nitrogen,NH_(3)-N;nitrate nitrogen,NO_(3)-N;total phosphorus,TP;chemical oxygen demand,COD)and PPCPs.With an increase of the initial concentration of PPCPs in domestic wastewater,the relative growth rate and tolerance index of azolla showed a trend of first increasing and then decreasing,and the growth of azolla was inhibited under the treatment of 100 and 1000μg·L^(-1)PPCPs.Compared with the control,the removal effect of azolla on nitrogen and phosphorus was significantly enhanced under 1 and 10μg·L^(-1)PPCPs treatment(P<0.05),but was significantly weakened under 100 and 1000μg·L^(-1)PPCPs treatment(P<0.05).When treating with different initial concentrations of PPCPs,the effect of azolla on COD removal was significant,and the COD removal rate increased with the increase of the initial concentration of PPCPs.The removal effect of azolla on gemfibrozil and carbamazepine was enhanced with increasing incubation time.The removal rate of gemfibrozil increased with increasing initial concentration of PPCPs(except for 1000μg·L^(-1)PPCPs treatment),whereas the removal rate of carbamazepine decreased with increasing initial concentration of PPCPs.Azolla has a good removal effect on both PPCPs and conventional pollutants other than ammonia nitrogen in domestic wastewater and can be used as a remediation treatment plan for domestic wastewater containing typical PPCPs.
作者
李胜曙
崔二苹
郑凌云
李松旌
陶甄
胡超
赵志娟
樊向阳
LI Shengshu;CUI Erping;ZHENG Lingyun;LI Songjing;TAO Zhen;HU Chao;ZHAO Zhijuan;FAN Xiangyang(Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang 453002,China;Luohe Agricultural and Water Technology Promotion Center,Luohe 462000,China;School of Earth System Science,Tianjin University,Tianjin 300072,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2023年第4期921-930,共10页
Journal of Agro-Environment Science
基金
国家重点研发计划项目(2021YFD1700900)
国家自然科学基金项目(51479201)
中国农业科学院农业科技创新计划项目(ASTIP202104)。
关键词
新污染物
卡马西平
吉非罗齐
满江红
水质净化
emerging pollutant
carbamazepine
gemfibrozil
azolla
water purification
