Liquid purification or separation – Processes – Separating
Patent
1984-05-14
1985-09-17
Wyse, Thomas
Liquid purification or separation
Processes
Separating
210787, 210805, 210806, B01D 2126
Patent
active
045419337
ABSTRACT:
A process and apparatus for removal of ash from a waste activated sludge stream includes a pressure regulator for controlling the pressure of incoming waste activated sludge containing water or supernatant, carbon and ash as suspended solids; a first stage separation including a plurality of parallel mounted hydrocyclones for receiving the controlled pressure incoming waste activated sludge for separation into a first fluid output containing substantially supernatant and carbon and a second fluid output containing a greater concentration of ash; and a second separation stage including a vibrating screen which receives the second fluid output from the first separation stage, such vibrating screen allowing substantially only the passage of supernatant and carbon therethrough thus producing a third fluid output and a fourth output of ash concentrate which can be ultimately removed from the process.
REFERENCES:
patent: 3788469 (1974-01-01), Hirsch et al.
patent: 3849246 (1974-11-01), Raymond et al.
patent: 3929639 (1975-12-01), Turner et al.
patent: 3989628 (1976-11-01), Bier
patent: 4274968 (1981-01-01), Grutsch et al.
patent: 4425228 (1984-01-01), Lynn et al.
Armold Clark W.
Huebner Michael B.
Tobin David
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