渗透坝对丹江口库湾水体氮磷负荷削减的应用

为了解决丹江口库湾局部水体富营养化问题，以水体氮、磷削减负荷为目标，利用渗透坝对库湾水体进行净化，促进库湾水体流动循环。该技术以渗透坝为主体，包括提水风车、生态塘和布水系统，设计进水负荷为16.7 L·min-1。结果表明，三级坝系统对水体中TP、TN、NH4+-N和NO3--N负荷平均削减率分别为48.3%、46.8%、56.9% 和52.1%，进水中NO3--N负荷量的标准偏差较大，为2.01，出水氮磷负荷量波动比较稳定，TN削减负荷量标准偏差较大，为1.08。TSS出水负荷量出现升高现象，分析表明TSS主要成分为固体颗粒物质。该技术的应用对库湾水体氮磷负荷具有显著的削减作用，同时能够增强库湾水体的流动循环，可有效防止水体富营养化现象发生。

Application of permeable dam on nitrogen and phosphorus load reduction in the bay of Danjiangkou reservoir

In order to solve the problem of eutrophication in the bay of Danjiangkou reservoir, a permeable dam was used to purify water with nitrogen and phosphorus load reduction, and promote the water flow circulation in the bay. In this technology, a triple permeable dam is the main part, water pumping windmills, ecological pond and water distribution system are auxiliary units, the design water load is 16.7 L·min-1. The results showed that through the triple permeable dam, the average reduction rates in TP, TN, NH4+-N and NO3--N loads reached 48.3%, 46.8%, 76.9% and 69.07%, respectively. The standard deviation for the input NO3--N load was higher than other parameters with a value of 2.01, the fluctuations in nitrogen and phosphorus load of effluent were stable, the standard deviation for TN reduction was also high with a value of 1.08. The TSS load in effluent increased, and correlation analysis indicates that it mainly composed of solid particulates. The application of this technology could significantly reduce nitrogen and phosphorus load in the bay water, strengthen bay water flow circulation, and prevent eutrophication phenomenon.