| 摘要 |
<p>A process for the sepn. of biomass and inorqanic constituents from the sludge of a methane reactor in an anaerobic sewage treatment plant is as follows. From the reactor (1), the sludge-water mixt. is expelled by the reactor pressure to the inlet opening (inlet 5) of a hydrocyclone (6); the top discharge from this cyclone leads to a point below the water surface of a buffer storage vessel (12) contg. both biomass and water; finally, a mixture of sludge and water is simultaneously fed back from the buffer storage vessel (12) into the reactor (1). Pref., in the lime from the reactor to the hydrocyclone (6), the mixt. passes through a coarse sepn. device (7), which separates the larger particles and can be back-flushed. Pref. also, the rate of discharge from the bottom outlet (14) of the hydrocyclone can be varied in its ratio to the feed to the hydrocyclone. The depth of the inlet from the top discharge at the point where it enters the buffer storage vessel (12) may also be adjustable.</p> |
