摘要
湖泊富营养化和蓝藻水华仍是未来相当长一段时间内的水生态环境问题,研发相应的防控技术必不可少.氯化铁改性沸石联合沉水植物修复技术对水体富营养化具有一定的改善作用.研究发现,添加氯化铁改性沸石后水体总磷、叶绿素a、浊度等指标均下降显著(p<0.05),对水质改善明显.总磷和可溶性磷分别自0.66和0.51 mg/L降至0.13和0.11 mg/L.叶绿素a自106.06μg/L降至52.50μg/L,之后对照组叶绿素a升至573.60μg/L,而2个处理组均保持较低水平;藻类组成也发生改变,自蓝藻门种类为优势转变为绿藻门种类为优势.对照组浊度最高为126.40 NTU,而2个处理组始终保持在32.94 NTU以下.试验后期温度下降可能导藻细胞生长受限,引起对照组叶绿素a、浊度、氮磷营养盐的下降.通过联合沉水植物处理后各水质指标比单独使用氯化铁改性沸石更低,说明沉水植物和氯化铁改性沸石具有协同作用,联合使用能够弥补单一材料的不足.
Eutrophication and cyanobacterial blooms have been aquatic ecology problems for a long time.It is urgent to develop effective technologies to prevent and control these problems.We studied the effect of zeolite modified by ferric chloride combined with submerged plants on water quality.The results showed that the total phosphorus,chlorophyll,turbidity,and other physical and chemical factors decreased significantly(p<0.05)after applicating ferric chloride modified zeolite.Total phosphorus and dissolved phosphorus decreased from 0.66 and 0.51 mg/L to 0.13 and 0.11 mg/L,respectively.Chlorophyll a decreased from 106.06μg/L to 52.50μg/L,while in the control group increased to 573.60μg/L,and two treatment groups remained low;and the species succession from cyanobacteria to green algae.The significant difference(p<0.05)also was found in turbidity,which the highest in the control group reached 126.40 NTU,while the treatment groups remained consistently below 32.94 NTU.We also found total phosphorus,ammonia nitrogen,turbidity was much lower with submerged plant than that of ferric chloride modified zeolite alone.The results indicated the combination of modified zeolite and submerged plants could be an effective method to improve the water quality.
作者
刘金福
代涛涛
李威
陈楠
胡淑芳
刘宇天
楼倩
陈宇炜
刘永
钟家有
Liu Jinfu;Dai Taotao;Li Wei;Chen Nan;Hu Shufang;Liu Yutian;Lou Qian;Chen Yuwei;Liu Yong;Zhong Jiayou(Jiangxi Provincial Key Laboratory of Water Resources and Environment of Poyang Lake,Jiangxi Provincial Technology Innovation Center for Ecological Water Engineering in Poyang Lake Basin,Jiangxi Academy of Water Science and Engineering,Nanchang 330029,China;College of Environmental Science and Engineering,Peking University,Beijing 100871,China;The School of Hydraulic&Ecological Engineering,Nanchang Institute of Technology,Nanchang 330099,China)
出处
《河南师范大学学报（自然科学版）》
CAS
北大核心
2023年第2期121-127,共7页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(52260026)
江西省科技厅重大科技研发专项“揭榜挂帅”制项目(20213AAG01012)
江西省水利厅科技项目(202022YBKT17,201922ZDKT04,202023ZDKT09)
江西省重点研发计划(220203BBGL7328)
江西省水利科学院江西省鄱阳湖水资源与环境重点实验室开放研究基金(2020GPSYS04).
关键词
富营养化
沉水植物
沸石
氯化铁
eutrophication
submerged plant
ferric chloride
zeolite
