Incineration of sludge following powdered activated carbon treatment
asked 28 July 2016 asked by Vince (750 points)
Hello, I also manage a WWTP with Acticflo carb and Multiflo. For budgetary reasons, the PAC sludge is mixed with limed sludge and then spread, which is tolerated by our local water authority. It is a very economical process.
Thanks We started out with a two-track process because we are in an agricultural area and very sensitive to the use of pesticides. The water to be treated invariably contains pesticides, so, as a long-term environmental approach, we don't spread sludge containing these compounds, even if we assume leaching of pesticides with be virtually nil. The word "tolerated" is well chosen, because it all depends on the context and local stakeholders.