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Co-disposal of sewage sludge and solid refuse in a Purox converter

Conference · · Prepr. Pap. Natl. Meet., Div. Environ. Chem., Am. Chem. Soc.; (United States)
OSTI ID:6353256
Sludge and refuse were co-disposed at a combined feed rate of up to 106 million g/day. The system was operated at below total capacity of 200 million g/day because of a shortage of refuse. The maximum ratio of sludge to solid waste was 0.23:1 on a wet basis and 0.074:1 on a dry basis. The ratio of sludge cake to refuse could not be increased because of problems with charging the mixture to the converter. These deficiencies could be overcome by improvements in the sludge blending procedure and the sludge charging device. Over the range of compositions studied, the system performance was similar to the performance obtained with refuse alone. A typical material balance (all in million g) was: (1) input (refuse and sludge, 1.0; oxygen, 0.22; and fuel gas, 0.02) and (2) output (ferrous metal, 0.04; residue, 0.22; product gas, 0.70; and wastewater, 0.28). It was estimated that the over-all conversion of the energy in the feed material to useful gas exceeds 70%. However, this is gross available energy and does not consider energy required for treatment of wastewater, refuse processing and oxygen production.
OSTI ID:
6353256
Conference Information:
Journal Name: Prepr. Pap. Natl. Meet., Div. Environ. Chem., Am. Chem. Soc.; (United States) Journal Volume: 18:1
Country of Publication:
United States
Language:
English