渗滤取水河床淤塞机理分析

Analysis on Silting Mechanism of the Seepage Bed

研究天然滤床是否会淤塞,关系到渗滤取水工程的使用寿命。本文深入研究了滤床淤塞的三种机理,即悬浮物沉淀、吸附和水动力条件引起的物理淤塞;腐蚀、结垢引起的化学淤塞和微生物大量繁殖淤塞。提出了滤床的结构特征、河水水质、水动力条件及取水工艺是影响淤塞的主要因素,总结了防治淤塞的建议。

To study filter bed would be silting is the key point concerning the expectancy service life of the filter project. The paper expound 3 mechanisms how the filter bed be silted. The 3 mechanics are physical silt by deposition, adsorption of suspension and hydrodynamic force, chemical silt by corrosion and mass reproductive microbe. It puts forward some main factors that influences the silt, which are structure characteristics of the filter bed, water quality of river, the condition of water force and the technology of water to be get.