Roll-off dewatering containers from Bakers Waste Equipment provide a one-step process for dewatering all types of liquid waste, including septage, grease sludge, grit, hazardous waste, lagoon sludge and fly ash. Liquid waste is pumped into the containers, allowing the liquids to drain through filtered walls and floors. The liquid is collected in an area behind the walls and floors, staging it for discharge out one of the side drain ports. 800/221-4153; www.bwe-nc.com.