蒲城水库水质污染与富营养化评价和预测的研究

RESEARCH INTO THE ASSESSMENT AND PREDICTION OF WATER QUILITY POIIUTION AND EUTROPHICATION OF THE PUCHENG RESERVOIR

本文对蒲城水库污染负荷量进行了动态平衡研究,开展了物理、化、学、放射性、水生生物和富营养化等多项指标的监测分析,采用多种方法对水库水质污染现状与富营养化程度作出了综合评价和中、长期预测,提出了水质保护对策。研究结果表明:30年后蒲城水库水质除pH、总锰等个别项目可能超标外,其它水质指标均符合地面水三类标准;总氮、总磷浓度各低于0.40mg/L和0.03mg/L,水库仍将处于中—富营养型。但10年后的夏季总氮、总磷浓度将会分别超过0.50mg/L和0.35mg/L,存在富营养化的危险。

This article makes research into the dynamic equilibrium of the pollution load capacity of the pucheng reservoir, and makes a monitoring analysis of many items including physics, chemistry, radioactivity, hydrobios and eutrophication, using several ways to make a comprehensive assessment for the status quo of the water quality pollution and the eutrophication level of the reservoir and to make midterm and long-term predictions. It puts forward the countermeasures to protect the water quality. The research shows that in 30 years, except that very few items such as pH and T-Mn values are likely to exceed the standard, the other indices will all be in accordance with the standard for the third categary surface water and with the densities of T-P and T-N below 0.40mg/l and 0.03mg/l respectively, the reservoir will be in a modium-eutrophication pattern. Nevertheless, in summer time in ten years, the densities of T-P and T-N will exceed 0.50mg/l and 0.35mg/l respectively, so the danger of eutrophication exists.