The invention relates to a dynamic membrane
sewage direct filtering reactor based on different
sewage qualities and an operation method. According to the dynamic membrane
sewage direct filtering reactor, a dynamic membrane is formed on the surface of a
macropore membrane support material by virtue of inherent
suspended solids in sewage, the dynamic membrane can be adopted for direct
filtration and concentration on sewage,
produced water can meet the standard of city sewage recycling landscape
irrigation water, and a concentrated liquid can be discharged into a municipal
pipe network or is further treated and recycled; on the basis of different contents of
suspended solids in sewage, the operation method comprises the following steps: (1) under a high-
turbidity raw water condition, powering on a stirring device in a sewage regulating pond, pumping the sewage into a dynamic membrane filtering reactor by using a lifting pump till the
turbidity is less than 10 NTU to form a dynamic membrane, feeding back primary
effluent to the sewage regulating pond, and carrying out normal operation to generate water; (2) under a low-
turbidity raw water condition, powering off the stirring device in the sewage regulating pond, pumping settled sewage into the dynamic membrane filtering reactor by using the lifting pump so as to form the dynamic membrane in a manner the same as that of the process (1), after the dynamic membrane is formed, powering on the stirring device in the sewage regulating pond, and subsequently carrying out normal operation to generate water.