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来源：百度知道 编辑：UC知道 时间：2024/05/05 01:23:30
It is common to use mathematical models to estimate how point source discharges influence concentrations within receiving waters. Although the residuals have been modeled in streams, lakes and estuaries, this introduction considers only streams. Discharges and stream-flows are considered to be constant and steady-state conditions ate assumed. It is also assumed throughout that only a single point source is involved.
Models foe predicting how the discharge of conservative substance affects stream quality are invariably based on the law of conservation of mass, also referred to as the “mass balance equation.” chlorides and total dissolved solids are the indicators modeled most frequently. As shown in figure 6-1,a mass balance analysis for conservative substances uses two equations, one for the conservation of flow and one for the conservation of residuals.
The units shown(cfs and mg/L)are illustrative; other flowrate and concentration units can also be used. because the

It is common to use mathematical models to estimate how point source discharges influence concentrations within receiving waters. Although the residuals have been modeled in streams, lakes and estuaries, this introduction considers only streams. Discharges and stream-flows are considered to be constant and steady-state conditions ate assumed. It is also assumed throughout that only a single point source is involved.(通常使用数学模型估计点源怎样在收到水内卸影响集中。 虽然残余已经被在溪，湖和河口里塑造，但是这个介绍只考虑溪。 卸并且流量考虑恒定和稳态条件吃以为。 可以也认为在整个那只有单个的点源被包含。)
Models foe predicting how the discharge of conservative substance affects stream quality are invariably based on the law of conservation of mass, also referred to as the “mass balance equation.” chlorides and total dissolved solids are the indicators modeled most frequently. As shown in figure 6-1,a mass balance analysis for conservative substances uses two equations, one for the conservation of flow and one for the conservation of residuals. (预言保守的物质的解除怎样影响溪的模型仇敌质量不变基于质