Thermal dryer dewaters solids

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Water Environment and Technology

OSTI ID:41672

DiMascio, F J ^[1]; Burrowes, P A ^[2]

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1. Buffalo Sewer Authority, NY (United States)
2. Parsons, Brinkerhoff, Gore & Storrie, North York, Ontario (Canada)

Solids incineration is traditionally an energy-intensive solids handling process at wastewater treatment plants. To reduce energy costs, the Buffalo (N.Y.) Sewer Authority has added an indirect thermal dryer to its treatment plant to dewater solids before incineration. In the first 3 months of operation, the authority reduced its solids inventory from 634,400 to 227,300 kg. Solids processed in the plant`s multiple-hearth incinerators varied from 11 to 12.75 wet Mg/hr at feed concentrations averaging 21% total solids. And, the dryer was operated with less than 5% downtime. The cost of this indirect thermal dryer system, including construction and equipment, was $995,000. 1 fig., 2 tabs.

• OSTI ID: 41672
• Journal Information: Water Environment and Technology, Journal Name: Water Environment and Technology Journal Issue: 9 Vol. 5; ISSN 1044-9493; ISSN WAETEJ
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
COMBUSTION
COST
DRYERS
ENERGY CONSERVATION
SEWAGE
SOLID WASTES
WASTE PROCESSING
WASTE WATER
WATER REMOVAL