| 刘兰芬,谭红武,张士杰.电厂余氯排放对水域环境影响评价方法研究[J].水利学报,2004,35(6):0098-0103 |
| 电厂余氯排放对水域环境影响评价方法研究 |
| Method for assessing the impact of residual chlorine in cooling water on environment of thermal power plants |
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| DOI： |
| 中文关键词: 余氯 水环境 现场采样观测 现场实验 一级动力学反应数学模型 对流扩散数学模型 |
| 英文关键词: residual chlorine water environment direct sampling first-order dynamic reaction mathematical model convection-diffusion mathematical model |
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| 摘要点击次数: 1961 |
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| 中文摘要: |
| 为了探讨火(核)电厂冷却系统余氯排放对受纳水域环境影响的范围和程度，本文在以往电厂环境影响研究和评价工作实践的基础上，总结前人的研究成果，针对工程建设的不同阶段和电厂采用的不同加氯方式，提出具体的获得余氯影响范围和程度的方法。对已生产运行的电厂，采用现场直接采样观测方法；对于采用间歇加氯工艺的电厂，采用现场快捷比色实验方法；对已建和拟建电厂，均可采用一级动力学反应数学模型计算方法；对于拟建电厂在资料不充分的情况下，采用二维对流扩散数学模型预测方法。并对这些方法的适用范围进行了分析，列举了相应的应用实例。为研究电厂排放余氯对水环境的影响和这类建设项目环境影响评价及后评估提供了可供选择的工具。 |
| 英文摘要: |
| Chlorine is always added into cooling water of thermal power plants to prevent the cooler from blocking. However, the residual chlorine may bring about adverse influence on water environment. Based on the accumulated experiences on environmental impact assessment, methods for obtaining the affected extent and affected level of residual chlorine in cooling water effluent for power plants in different stage are suggested. In case the power plant is working, the method of direct sampling is the best way. In case the plant is in the stage of planning, the first-order dynamic reaction mathematical model is useful for making prediction. The 2-D convection-diffusion mathematical model can be used for forecasting even if the data of the power plant is insufficient. Examples are given for demonstration. |
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