WEF Discussion Forums
Biosolids and Residuals
alum conditioning of anaerobically digested sludge for entrifuge dewatering
Does anyone out therer have experience with alum conditioning of anaerobically digested sludge for centrifuge dewatering? Thanks
Seeing as nobody has added a reply for the last 11 months I'll give my two cents. From what I have read years ago about Alum conditioning, is that instead of using Polymers and such, Alum was preferable choice and used for Coagulation and Floculation then Anaerobically Digested and dried to produce a class A Biosolid that was pelletized,bagged and sold for fertilizer. Seems to me this method may have been used in Europe somewhere.
also want to add, make sure you have the Alcalinity, Alum. consumes it.