Geotextile Tube Dewatering: Dose the Slurry Before the Tube, Not In It
0.5-1.5 kg/m3 of SAP upstream of the tube lifts cake solids from 25 to 45 percent. Dosed at the fill port it gives a stiff inlet, soup at the far end.
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,…
Sludge Is Not Just Thick Leachate: Splitting the Two Jobs on Site
A tanker driver refuses the load at the weighbridge because the material slumps in the drum. The crew solidified thirty cubic metres of the same lagoon the week before without trouble. Nothing about the polymer changed. What changed is that one batch was liquid leachate and the other was leachate sl…
