Separation of ash from regenerated adsorbent

Details Separation of ash from regenerated adsorbent Separation of ash from regenerated adsorbent

B - Operations, Transporting

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B01D 21/01 (2006.01) B01D 21/00 (2006.01) B03B 1/04 (2006.01) B03D 3/00 (2006.01) C02F 1/28 (2006.01) C02F 1/54 (2006.01)

Patent

CA 1316835

ABSTRACT OF THE DISCLOSURE A process for separating ash particles from an aqueous slurry containing a mixture of regenerated adsorbent (e.g., carbon) and ash particles includes the steps of settling the slurry to produce a solid phase including the mixture of adsorbent and ash particles and a supernatant or a clarified aqueous phase. After separation of the aqueous phase, a slurry of the solid phase is diluted with water and a dispersing agent for promoting suspension of the ash particles and an anionic polymer for promoting settling of the adsorbent particles are added. The thus-treated, dilute slurry is settled to produce an aqueous phase containing primarily suspended ash particles and a solid phase including carbon particles. After separation, the solid phase can be returned to a wastewater treatment system.

553587

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