几种红树植物模拟湿地系统对污水中重金属的净化效应  

Purification effects of simulation wetland system of several kinds of mangrove plants on heavy metals in wastewater

作　　者：陈思敏 唐以杰 罗丽芬 张京京 宋乾峰 陈晓芬 黄慧娟 孙婷琪 林晓纯 CHEN Simin;TANG Yijie;LUO Lifen;ZHANG Jingjing;SONG Qianfeng;CHEN Xiaofen;HUANG Huijuan;SUN Tingqi;LIN Xiaochun(School of Biotechnology and Food engineering, Guangdong University of Education, Guangzhou 510303, China)

机构地区：[1]广东第二师范学院生物与食品工程学院,广州510303

出　　处：《生态科学》2017年第5期27-33,共7页Ecological Science

基　　金：国家自然科学基金(31570525);广东省自然科学基金(2014A030313750);广东省科技计划项目(2015A030302096);广东大学生科技创新培育专项资金项目(pdjh2015a0394);大学生创新创业训练项目(201614278078)资助

摘　　要：在温室中建立无瓣海桑(Sonneratia apetala)、桐花树(Aegiceras corniculatum)、木榄(Bruguiera gymnorrhiza)、秋茄(Kandelia candel)、无瓣海桑+木榄(S.apetala+B.gymnorrhiza)、无瓣海桑+秋茄(S.apetala+K.candel)、无瓣海桑+桐花树(S.apetala+A.corniculatum)等7种模拟湿地系统,用正常浓度污水(SW)、5倍浓度污水(FW)和10倍浓度污水(TW)3种人工配制的生活污水分别对7种模拟湿地系统进行污灌6个月。结果发现:7种人工模拟湿地生态系统对污水中重金属的净化率与红树植物种类以及污水中重金属浓度有关。当灌正常浓度污水时,7种人工模拟湿地生态系统对Pb和Mn的总净化率以无瓣海桑+秋茄最大,对Cu的总净化率以桐花树最大,对Zn和Cd的总净化率以无瓣海桑+桐花树最大。当灌5倍浓度污水时,7种人工模拟湿地生态系统对Pb总净化率以无瓣海桑+桐花树最大,对Cu和Cd总净化率以无瓣海桑+秋茄最大,对Zn和Mn总净化率以无瓣海桑+木榄最大。当灌10倍浓度污水时,7种人工模拟湿地生态系统对Pb、Mn的总净化率以无瓣海桑+秋茄最大,对Cu的总净化率以秋茄最大,对Zn的总净化率以无瓣海桑+木榄最大,对Cd总净化率以无瓣海桑最大。重金属有95%以上是积累在土壤中,表明土壤子系统是人工模拟湿地系统净化的主体。Seven kinds of simulation wetland systems were established in the greenhouse.They are Sonneratia apetala,Aegiceras corniculatum,Bruguiera gymnorrhiza,Kandelia candel,S.apetala+B.gymnorrhiza,S.apetala+K.candel,and S.apetala+A.corniculatum,which were watered regularly and quantitatively with normal artificially formulated water and that of five times or ten times.The results indicated that the purification rate of heavy metals in wastewater was related to the mangrove species of simulated wetland ecosystems and the heavy metal concentrations in wastewater.The results showed that when we poured the normal concentration of wastewater in the seven kinds of simulation wetland systems,the total purification rate of Pb and Mn of the S.apetala+K.candel wetland ecosystem was the highest,the total purification rate of Cu of the A.corniculatum wetland ecosystem was the highest,and the total purification rate of Zn and Cd of the S.apetala+A.corniculatum wetland ecosystem was the highest.The results also showed that when we poured the FW concentration of wastewater in the seven kinds of simulation wetland systems,the total purification rate of Pb of the S.apetala+A.corniculatum wetland ecosystem was the highest,the total purification rate of Cu,Cd of the S.apetala+K.candel wetland ecosystem was the highest,and the total purification rate of Zn,Mn of the S.apetala+B.gymnorrhiza wetland ecosystem was the highest.However,when we poured the TW concentration of wastewater in the seven kinds of simulation wetland systems,the total purification rate of Pb,Mn of the S.apetala+K.candel wetland ecosystem was the highest,the total purification rate of Cu of the Kandelia candel wetland ecosystem was the highest,the total purification rate of Zn of the S.apetala+B.gymnorrhiza wetland ecosystem was the highest,and the total purification rate of Cd of the Sonneratia apetala wetland ecosystem was the highest.The results also revealed that more than95%of heavy metal was accumulated in the soil which indicated that the soil subsystem was the ma

关 键 词：红树植物 模拟湿地系统 重金属 净化效应 

分 类 号：X173[环境科学与工程—环境科学]