以自行开发的长纤维高速过滤器为对象，通过在净水厂长期的过滤试验，从过滤器床层孔隙分布、 床层内滤液浓度及各层比积泥量和水头损失沿滤层的变化等方面，详细分析了长纤维高速过滤器基于结构 上独特特点而形成的积泥逐层向滤床深处推移，直至整个滤床“衰竭”的典型深层过滤过程与特征，为过滤技 术的深度开发提供了依据。

Through long- time filtering experiment in water treatment plant, indepth filtration mechanism and characteristics of the long fiber efficient filter , which has been patented with national invention, was studied in this paper. The bed structure characteristics of perfect filtering layer was showed in characteristics of the pore structure, filtrate water concentration, deposit in each layer and loss of filtering pressure along the depth of filtering bed. It was found that deposit lapse with depth of filter bed until exhaustion. It presents research direction for development of filter technique.