基于湖泊水质和水环境容量评估的城市内湖污染治理研究
Research on Pollution Management of Municipal Lakes Based on Water Quality and Water Environment Capacity Assessment

以快速城市化区域内湖为代表的水体普遍存在营养物超标现象，从而导致水质退化、水体富营养化，水体景观功能受到影响。治理城市内湖对于城市环境改善、形象提升具有重要的意义。本文以湖北省武汉市的城市内湖沙湖为研究案例，通过对沙湖的资料收集，补充调查，结合当地环境统计数据，1) 应用单因子评价模型评价沙湖的水质污染情况；2) 基于湖泊富营养化评价模型评估沙湖富营养化状态；3) 计算沙湖COD、TP、TN的水环境容量，明确在水质目标下沙湖能够容纳污染物的总量，为湖泊污染治理提供理论依据；4) 从外源、内源、水体生态修复和水环境监管等方面提出沙湖水环境治理措施。
The water bodies represented by municipal lakes in rapidly urbanizing areas generally have nu-trient overload, which leads to water quality degradation, water eutrophication, and water land-scape functions are affected. The treatment of municipal city lakes is of great significance for urban environment improvement and image enhancement. In this paper, take the inner city lake Shahu in Wuhan, Hubei Province as a research case, through the data collection of Shahu, supplementary investigation, combined with local environmental statistics, 1) Applying a single factor evaluation model to evaluate the water quality pollution of Sand Lake; 2) Assessing the eutrophication status of Sand Lake based on the lake eutrophication evaluation model; 3) Calculating the water environ-ment capacity of COD, TP and TN of Sand Lake, clarifying the total amount of pollutants that Sand Lake can accommodate under the water quality target, and providing a theoretical basis for lake pollution management; 4) We proposed measures for the management of the water environment of Sand Lake in terms of external edge pollutants, internal source pollutants, water ecology restoration and water environment supervision.