摘要
选择天津滨海地区北大港水库为研究对象,采用野外调查和数据分析相结合的方法,于夏季对水库不同位置取样,分析水体pH值和主要咸化指标溶解性总固体(TDS)及Cl-质量浓度,研究北大港水库不同位置水质咸化的变化规律,对水库咸化机理进行探讨。研究发现:沿着水流方向自西向东,TDS和Cl-质量浓度呈现“水库上游闸>水库下游闸”的分布特征,而pH值正好相反,沿着水流方向水体咸化呈现逐渐减弱的趋势;北大港水库水体各指标在垂向分布上可分为两种类型:“混合型”水体,多分布在水库水流上游西侧进水闸口(南岸进水闸、赵连庄闸、马圈进水闸、大港农场闸和刘岗庄闸),水库东南部的沙井子闸以及东北部的出水闸(十号调节闸和排咸闸);“分层型”水体,TDS和Cl-质量浓度在垂向上均随着深度的增加而增加,其中三号泄水闸最具代表性。沉积物盐分释放对水库咸化有影响。
Reservoirs salinization is a common environmental problem in coastal areas. After the salinization of the reservoir, salt will be transferred to the soil, seriously affecting agricultural production. The salinization of reservoir water also has an impact on industrial production. When the salinization of reservoir water cannot meet the industrial water demand, desalting equipment needs to be installed, which increases the cost of enterprises. Thus, it leads to the deterioration of the water quality of the deep fresh water, and even the destruction of the deep groundwater resources, seriously affecting people’s daily drinking. Many experts and scholars have carried out relatively comprehensive research on the salinization of coastal reservoirs, but the research on the spatial variation law and salinization mechanism of reservoir salinization is still insufficient. Studying the problem of reservoir salinization can not only save resources and control costs, but also reduce economic losses caused by salinization,improve people’s drinking water quality, deepen people’s understanding of reservoir salinization, and provide a sufficient theoretical basis for the prevention and control of reservoir salinization.Beidagang Reservoir in Tianjin Binhai area was selected as the research object, and the method of combining field investigation and data analysis was used to sample different locations of the reservoir in summer to analyze the pH of the water body, the content of dissolved total solids(TDS) and Cl-to study the change law of water salinization in different locations to explore the mechanism of reservoir salinization.The study found that along the flow direction from west to east, the concentration of TDS and Cl-presents the distribution characteristics of "upstream gate of the reservoir>downstream gate of the reservoir", while the pH value is the opposite. Along the flow direction, the salinization of the water body shows a gradual weakening trend. The vertical distribution of water body indicators can be div
作者
西雷
李海明
李梦娣
肖瀚
王浩然
XI Lei;LI Haiming;LI Mengdi;XIAO Han;WANG Haoran(Binhai Groundwater Utilization and Protection Laboratory,Tianjin University of Science and Technology,Tianjin 300457,China;School of Ocean and Environment,Tianjin University of Science and Technology,Tianjin 300457,China;Key Laboratory of Marine Chemical Resources and Food Technology,Ministry of Education,Tianjin 300457,China;State Key Laboratory of Groundwater Pollution Simulation and Control for Environmental Protection,Chinese Academy of EnvironmentalSciences,Beijing 100012,China)
出处
《南水北调与水利科技（中英文）》
CAS
CSCD
北大核心
2023年第1期172-180,共9页
South-to-North Water Transfers and Water Science & Technology
基金
国家自然科学基金项目(42072288)。
关键词
北大港水库
水质咸化
水-岩相互作用
底泥盐分释放
空间分布
Beidagang Reservoir
salinization of water quality
water rock interaction
salt release from sediment
space distribution
