Jim Anderson, Ph.D., is an emeritus professor at the University of Minnesota Department of Soil, Water and Climate and recipient of the pumping industry’s Ralph Macchio Lifetime Achievement Award. Email Jim questions about septic system maintenance and operation at editor@pumper.com.
Pumpers and haulers who land-apply septage have long been aware of the need to stabilize loads with lime. Alkaline stabilization is the addition of lime to septage solids either before or after dewatering. This is to raise the pH of the septage to 12 for a period of 30 minutes as...
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