PROCESS OF AND INSTALLATION FOR DEHYDRATING PROTEIN-COMPRISING SLUDGE

摘要

Protein-containing waste water subjected to a precoagulation, forming small protein-containing agglomerates is subjected to the action of tangentially injected low pressure steam of 1.03 to 1.10 kg/cm3, thereby creating shear forces. The protein-containing agglomerates precipitate and are dried in a dryer thus providing fodder material. An installation for performing the method comprises an agglomerating vessel (5) provided with a line (4) for feeding precoagulated waste water and a tangential inlet (6) for low pressure steam. For emptying vessel (5) the vessel is provided with a valve (7) and the treated sludge is filtered by means of filter (11). Thereafter the filtered agglomerates are dried in a dryer (20).