Research on the pressure fluctuation of ceramic filter backwash

Abstract

In the present study, we analyzed the origin of pressure fluctuation of ceramic filter during recoiling washing process and found that reducing such pressure fluctuation necessitates the use of an accumulator or the structure improvement of distribution valve. By employing the TT-12 type of ceramic filter machine as an example, according to known conditions and through calculation and analysis, we determined the air pressure and accumulator volume and chose the NXQA-16/10-L-A accumulator. By employing the TT-45 type of ceramic filter machine as an example, changing the internal structure of the distribution valve from round to waist, the backwash time was prolonged. With the use of the two kinds of methods, we demonstrated that the pressure fluctuation was reduced to be within 0.02 MPa, which satisfied the requirements for recoiling washing.