自净作用

山溪小河中COD（Mn）的自净作用研究

Study on the Self-purification of COD_ ( Mn ) in Stream Water

浅部空区自净作用循环通风技术在矿井中应用与研究

Research and Application of Circulation Ventilation based on Self-purification Function in Shallow Empty Districts

封闭式精养池塘N、P营养盐的自净作用研究

Research on the Self-cleaning Mechanisms for Nitrogen and Phosphorus Nutrients in Farming Ponds

进入水体的油污随着时间的推移会逐步消失，这就是水体的自净作用。

The process that oiliness wastewater into water disappears as time goes on is called water self-purification .

As（Ⅲ）在包气带土层中的自净作用实验研究

Experimental researches on self & purification of ground water from as (ⅲ) in soil of vadose zone

悬浮物中汞以腐殖质结合态为主，这与腐殖质对汞的螯合能力甚强，能对汞污染起自净作用有关，这对汞污染治理有参考价值。

Mercury in suspended matter is dominated by mercury bound to humus , because the strong combining ability of humus , this can be reference for mercury pollution harness .

因为污染物除随河水流动方向流动以外，还会向河水流动不同方向扩散。污染物也可能由于水体的自净作用而在流动过程中逐渐消失。

Due to the diffusional effect , the pollutant will flow not only towards the down-stream , but also in other directions , including the direction against the flow stream .

水污染物的总量控制是建立在天然水体对污染物具有稀释扩散和自净作用理论上，即天然水体对污染物具有一定环境容量的基础上。

Total emission control of water pollutants is based on natural water dilution of pollutants and autopurification theory , in another word , natural water has some environmental capacity on pollutants .

根据粉尘粒子在井巷风流中的紊流弥散及本身的自由沉降的原理，利用采空区、旧巷自净作用进行可控循环通风现场试验。

Based on the principles of turbulent dispersion and free sedimentation of dust particles in the wind of mine , controlled recirculation ventilation field-testing was done by using self-purification function in shallow empty districts and old tunnels .

溪流水体自净作用对水质重金属污染具有一定的修复能力，该能力受距污染源的距离、流程长度以及水质污染程度的影响。

Self-purification of rivulet water body can somewhat do work for remediation of the contaminated water . But the remediation capacity depends upon the distance from the pollution source , scalar transport in rivulet flows and the pollution grades of the contaminated water .

微型藻类在海水环境自净中的作用

The role of micro-algae in the self-purification of marine environment

根据仿生学的理论，和自然界恢复能力与自净能力的强化作用，对农村传统的污水处理设施进行合理改善，构建人工土壤渗滤-湿地系统。

The improved system as well as its application and treatment efficiency was introduced , with detailed discussion on bio-properties and construction of artificial soil .

绘制了自净曲线，计算了自净百分率和自净速率常数，并讨论了温度、河水流速及浊度对自净作用的影响。

Self-purification curves are presented , percentages and rate constants of the purification are calculated , and influence of temperature , flow rate , and turbidity on self-purification are discussed .