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FULL SCALE DEMONSTRATION OF LIME STABILIZATION
Citation:
Noland, R., J. Edwards, AND M. Kipp. FULL SCALE DEMONSTRATION OF LIME STABILIZATION. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/2-78/171 (NTIS PB286937), 1978.
Description:
The project objective was to demonstrate and evaluate the feasibility, economics, and benefits of stabilizing primary, waste activated, septic, and anaerobically digested sludges by lime addition. The project confirmed the findings of previous laboratory and pilot scale tests and focused on the application of lime stabilization and land disposal techniques to a wastewater treatment plant operating in the range of 3,785 to 5,675 cu m/day (1.0 to 1.5 MGD). Emphasis was placed on the chemical, bacterial, and pathological properties of raw, lime stabilized and anaerobically digested sludges. The effects of long-term storage on the chemical and bacterial characteristics of lime stabilized sludges were determined. Ultimate disposal of all lime stabilized sludges was accomplished by spreading as a liquid on agricultural land and on controlled test plots. Lime stabilized sludges had negligible odor, minimum potential for pathogen regrowth and were suitable for application to farmland. Pathogen concentrations in lime stabilized sludges were 10-1,000 times lower than for comparable anaerobically digested sludges.