Municipal Wastewater Treatment Plant Pioneers in Conservation Approach

by Robert F. Bonner, Jr., (M.ASCE), Vice-Pres.; Malcolm Pirnie Inc., White Plains, N.Y.,


Serial Information: Civil Engineering—ASCE, 1980, Vol. 50, Issue 7, Pg. 57-59


Document Type: Feature article

Abstract:

One way to save fuel costs in sewage treatment plants is to use methane gas produced during sludge digestion as fuel. Cleveland's Southerly Wastewater Treatment Plant, however, took a more active approach. The plant is installing 4 types of conservation equipment. Water-to-water heat pumps transfer heat from treated effluent to buildings' heating system. Energy wheels transfer heat from air exhaust to incoming air. A specially designed boiler burns skimmings to produce steam for sludge conditioning. Finally, waste heat boilers use exhaust from multiple hearth incinerators to generate steam. Sidebars on Yonkers Joint Wastewater Treatment Plant and an overview of trends in municipal conservation efforts.

Subject Headings: Wastewater treatment plants | Municipal wastewater | Heat treatment | Heat transfer | Sludge | Energy consumption | Building systems

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