A large agricultural customer required a solution for washing harvesters, crawlers, and other heavy equipment. Their water contained extremely large quantities of very fine, silty mud, plenty of oil and grease and a high concentration of organic material from the fields. They were concerned about using underground tanks as clarifiers due to leakage issues and groundwater contamination. ClearBlu installed a complete above ground settling system with aerated tanks. Aeration promotes settling and bioreaction while the solids are being settled. After settling, the water is passed to a biodigester which eliminates grease, oil, and organics. The system has no odor whatsoever and provides reusable wash water.