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公开(公告)号：EP0136688A2
公开(公告)日：1985-04-10
申请号：EP84111715.3
申请日：1984-10-01
Applicant: STAUFFER CHEMICAL COMPANY
Inventor： Dodson, David Lee , Pate, Bruce Douglas , Rogers, Philip Conrad
CPC classification number: C01B25/027 , Y10S210/906
Abstract: The invention is directed to a process for recovering elemental phosphorus values from phosphorus-containing waste materials. The process comprises reducing the size of the solid particulate materials of the sludge and forming a uniform homogenous sludge which is filtered through a high-pressure thin-cake filter resulting in a filtrate high in phosphorus values.
The invention also discloses a pump retrieval means for retrieving the sludge from contaminated disposal areas and a preconditioning dewatering means for thickening and clarifying the sludge prior to comminuting the solids contained therein and filtrating to recover the phosphorus values contained therein.-
公开(公告)号：EP0136688A3
公开(公告)日：1985-09-25
申请号：EP84111715
申请日：1984-10-01
Applicant: STAUFFER CHEMICAL COMPANY
Inventor： Dodson, David Lee , Pate, Bruce Douglas , Rogers, Philip Conrad
CPC classification number: C01B25/027 , Y10S210/906
Abstract: The invention is directed to a process for recovering elemental phosphorus values from phosphorus-containing waste materials. The process comprises reducing the size of the solid particulate materials of the sludge and forming a uniform homogenous sludge which is filtered through a high-pressure thin-cake filter resulting in a filtrate high in phosphorus values. The invention also discloses a pump retrieval means for retrieving the sludge from contaminated disposal areas and a preconditioning dewatering means for thickening and clarifying the sludge prior to comminuting the solids contained therein and filtrating to recover the phosphorus values contained therein.
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公开(公告)号：EP0136688B1
公开(公告)日：1988-05-18
申请号：EP84111715.3
申请日：1984-10-01
Applicant: STAUFFER CHEMICAL COMPANY
Inventor： Dodson, David Lee , Pate, Bruce Douglas , Rogers, Philip Conrad
CPC classification number: C01B25/027 , Y10S210/906
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