Sludge reduction beyond the superbug

Larry Chertoff looks at three new technologies for minimising the cost of sludge disposal.

Most plant operators look forward to a visit from their sludge hauler with all the enthusiasm of a trip to the dentist. And they can be pretty sure the pain in the purse will only get worse.

If sludge disposal costs are certain not to lessen, one solution is to lessen the volume of sludge produced. Three novel approaches are ...

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