The objective of this study was to develop a two-layer cloth filtration system to remove standard plate count (SPC) bacteria from surface water having low turbidity (< 10 NTU) using M. oleifera seeds as a coagulant during pretreatment. In the first part of this study, 1 μm polystyrene particle was chosen as a surrogate for bacteria, and the effects of the type of cloth, combination of cloth, and M. oleifera seed powder dosage on filtration performance were investigated. It was found that without coagulation pretreatment, the removal efficiency of the particles was less than 40 %; however, coagulation pretreatment significantly improved the efficiency to higher than 99 % for the tightest cloth. It was also observed that the two-layer cloth filtration was effective in preventing the decrease in water permeability caused by the deposition of M. oleifera seed powder on the cloth. In the second part of this study, several coagulation-filtration treatment conditions that demonstrated good filtration performance in the first part of this study were applied to the treatment of pond water to remove SPC bacteria. Experimental data showed that the two-layer cloth filtration with M. oleifera seeds used as coagulant was capable of removing bacteria below 100 CFU mL⁻¹, which is an acceptable drinking water quality criterion recommended by the World Health Organization (WHO). In addition, it was successfully demonstrated that M. oleifera seed powder that was deposited on the filter cloth could be easily removed by gentle surface scrubbing, after which the filter cloth recovered its water permeability.

这项研究的目的是开发一种两层的布过滤系统，以在预处理过程中使用油生的毛发芽孢杆菌种子作为混凝剂，从浊度低（<10 NTU）的地表水中去除标准板数（SPC）细菌。在本研究的第一部分中，选择了1μm的聚苯乙烯颗粒作为细菌的替代物，并考察了布的类型，布的组合和油枝分枝杆菌的影响。研究了籽粉用量对过滤性能的影响。发现未经凝结预处理，颗粒的去除效率小于40％；颗粒的去除率小于40％。但是，对于最紧的布，混凝预处理可将效率显着提高到99％以上。还观察到两层布过滤有效地防止了由油茶分枝杆菌种子粉末沉积在布上引起的透水性的降低。在本研究的第二部分中，在本研究的第一部分中展示了良好过滤性能的几种混凝-过滤处理条件被应用于处理池塘水以去除SPC细菌。实验数据表明，用油茶分两层过滤用作凝结剂的种子能够去除低于100 CFU mL ^-1的细菌，这是世界卫生组织（WHO）推荐的可接受的饮用水水质标准。此外，已经成功地证明了通过轻柔的表面擦洗可以很容易地除去沉积在滤布上的油生茉莉花籽粉，然后滤布恢复了其水渗透性。