通过建立反应器内有机底物的质量平衡方程，得到了MBR对有机污染物去除率的数学表达式。
Through establishing the mass balance equation of organic substrate in MBR, the mathematic expression of organic pollutants removal efficiency could be achieved.
土壤养分的平衡分析结果表明，成都平原耕地土壤管理宜采取“稳氮、控磷、增钾”的施肥方法和严格控制各种点源和非点源污染物进入土壤。
The balance analysis results of soil nutrient indicated that the fertilization methods of cropland management in Chengdu Plain were firming nitrogen, controlling phosphorus and increasing potassium.
在提出污染物内能概念的基础上，对污水生物处理工艺能量平衡和分析的原理与方法进行了探讨，建立了能量平衡研究的基本模型。
Based on concept of internal energy of pollutants, principles and approaches for energy analysis are discussed, and basic model for energy balancing are founded.
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