| 摘要 |
Apparatus for the batch filtration of suspensions comprising a plurality of press-chambers and filter belts for transporting the suspension stepwise through the press-chambers, such that after pressing the suspension in the first press-chamber and before entry of the resultant press cake into at least one subsequent press-chamber, the structure of the press cake is changed by shearing forces and the press cake is curved and at least partially torn apart. In the case of municipal sludge the flaked sludge is subjected in a first pressing zone to slow increase of pressure and a pressure of up to about 1 bar and is subjected in at least one following press zone to a pressure increase which is more rapid than in the first press zone, up to a pressure of about 3 bars. |
