Alum Sludge From a Water Works: Why It Behaves Nothing Like Wastewater Sludge
A 60 megalitre-a-day treatment works produces about 4.5 tonnes of alum sludge a day at 96 percent moisture, and the contractor who took the disposal contract assumed the granules he used at a sewage works would behave the same way. They did not. At the same 1.5 percent dose the sludge stayed liquid,…
