Question

Problem 2 A lagoon 100 m by 50 m by 3 m deep is found to contain a PCB- and metal-contaminated sludge at a 10% solids content by volume. Sludge dewatering can be used to increase the volumetric solids content to 40% at a cost of $34 per cubic meter of sludge processed. Stabilization of the sludge costs $110 per metric ton of sludge treated. Leachate can be treated at a cost of $20 per cubic meter. By calculating the volume of sludge and leachate generated by dewatering, compare the cost of two alternatives:

Answer 1