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Typically a vacuum truck is dispatched to remove accumulation of grease and debris from the top of the lift to insure proper functioning of the facility. Grease accumulation and the associated smell is a problem typical of most wastewater treatment systems.
The OSE II concentrate was applied to the grease cap undiluted by use of a portable pump sprayer. It was estimated that the lift station contained 125 gallons of grease, so one gallons of OSE II was applied to test the application rate of 125:1. Once OSE II was applied the smell of the waste was not noticeable while standing directly above it. The odor was not masked, but it was effectively eliminated. In this lift station the water was not agitated and it remained stagnant throughout the test. It was noted that oil was present in the mixture because of the sheen on the surface of the water. OSE II immediately attacks any hydrocarbon present as well as the waste grease.
24 hours later we returned with the crew from the City of Wylie to observe the effect of the OSE II on the grease cap. A PVC pipe was used to gently stir the accumulation at the top of the water column. Since the grease binding the paper pulp and other debris floating on the surface was no longer present, the floating material immediately dispersed into the water column. The only materials remaining on the water's surface were non-degradable materials such as condoms, plastic and candy wrappers.
It is important to note that the grease creating the plug at the top of the lift was biodegraded by the indigenous bacterial found in the plug itself. OSE II does not contain any foreign bacteria, but rather it uses the indigenous bacteria in such a way that the natural biodegradation process is vastly accelerated.