直接过滤是指过滤前没有沉淀装置的一种水处理系统。根据滤池进水的不同特点，直接过滤又分为微絮凝过滤和接触过滤。由于直接过滤工艺流程中没有沉淀设备，可节省基建投资和日常开支。另外，直接过滤工艺节省化学药剂费用，处理过程中形成的污泥密度较大，而且易于浓缩脱... Direct filtration refers to a water treatment system that does not have a sedimentation device before filtration. According to the different characteristics of the filter inlet, direct filtration is divided into micro-flocculation filtration and contact filtration. Because there is no precipitation equipment in the direct filtration process, capital investment and daily expenses can be saved. In addition, the direct filtration process saves chemical costs, the density of sludge formed during the treatment process is large, and it is easy to concentrate off...