基于水质目标的深圳市某河道环保清淤深度的确定  

Assessment on Environmental Dredging Depth of Some River in Shenzhen Based on Water Quality Target

作　　者：姚俊 王庆 Yao Jun;Wang Qing(Power China Eco-environment Group Co.,Ltd,Shenzhen,Guangdong 518102,China;PowerChina Water Environment Technology Co.,Ltd,Shenzhen,Guangdong 518102,China)

机构地区：[1]中电建生态环境集团有限公司,广东深圳518102 [2]中电建水环境科技有限公司,广东深圳518102

出　　处：《绿色科技》2023年第6期154-158,共5页Journal of Green Science and Technology

摘　　要：以深圳市某河道为例,沿河道选取16个断面,共采集88个底泥样本,分别配置氮含量为0.00、1.00、2.00、4.00、8.00 mg/L,和磷含量为0.0、0.1、0.2、0.4、0.8 mg/L的溶液,将底泥样本放置在不同浓度溶液中进行吸附/解吸试验。结果表明:底泥对总氮、总磷的吸附量与平衡溶液中总氮浓度呈良好的线性关系。结合V类水的水质目标和吸附解吸规律,推算得到了该河道的环保清淤深度为0~2.5 m。Taking a river in Shenzhen as an example,a total of 88 sediment samples were collected from 16 sections along the river.Nitrogen solution with 0.00,1.00,2.00,4.00 and 8.00 mg/L and phosphorus solution with 0.0,0.1,0.2,0.4 and 0.8mg/L are prepared.Sediment samples were placed in different concentrations of solution for adsorption/desorption experiments.Results show that there is a good linear relationship between the adsorption amount of total nitrogen and total phosphorus in the sediment and the concentration of total nitrogen in the equilibrium solution.Combined with the water quality target of Class V and the law of adsorption and desorption,it is estimated that the environmental protection dredging depth of the river is 0~2.5 m.

关 键 词：底泥 水质目标 清淤深度 吸附解吸 

分 类 号：X703[环境科学与工程—环境工程]