STUDY AND CONTROLLING ON RUNOFF NON-POINT POLLUTION LOAD

本研究定量研究了非点源污染负荷的产生和流出量，并利用模拟模型探讨了径流非点源污染负荷的有效控制方法。首先，我们研究了街道入口的累积非点状污染负荷，其中污染负荷是从路面和屋顶冲刷出来的。其次，通过建立数学模拟模型，定量地了解城市街道入口非点源污染负荷积累的机理。近年来，受水区径流污染负荷量有增加的趋势，水质日益恶化。对于这些问题，有效的办法是建立一个控制雨水径流的系统，使雨水径流在广阔的流域内储存和/或渗透。研究了该控制系统对减少径流非点源污染负荷量的影响，表明该控制系统具有减少径流非点源污染负荷量的可能性。

In this study, we researched quantitatively the amount of generating and flowing out non-point pollution load and we investigated the effective control method for runoff non-point pollution load with our simulation model.At first, we researched and examined the accumulated non-point pollution load in street inlets in which pollution load is flushed out from a road surface and roofs.Next, we build up a mathematical simulation model to understand mechanism of the accumulation of non-point pollution load in street inlets in urban area quantitatively.Recently, the amount of runoff pollution load has a tendency to increase and water quality become worse in receiving water area. For these problems it is effective that a controlling system for runoff storm water with storage and/or infiltration of runoff storm water covering a wide drainage area.Then we investigated the effect of this controlling system on a reduction of the amount of runoff non-point pollution load and we made clear that this controlling system has a possibility of non-point pollution load reduction.