Solar chemical process for sludge treatment

Patent · Tue Mar 04 00:00:00 EST 1980

OSTI ID:5774225

Boyko, M

A solar chemical process for converting sewer sludge from a gelatinous mass into a manageable product suitable for fertilizer includes the manufacture of a carbonaceous product by treating cellulose waste such as newspaper with sulfuric acid and heating the mixture until the cellulose product becomes substantially black. The black product is mixed with sludge in a ratio to produce a grainy product that can be chlorinated for sterility and spread as fertilizer. In a modified version of the process, coal ash is added to the sludge with the carbonaceous product for its nutrient value, and sand may be added with the coal ash to aid in aeration of the soil.

• Assignee: IFI; EDB-82-065619
• Patent Number(s): US 4191549
• OSTI ID: 5774225
• Resource Relation: Patent File Date: Filed date 22 Aug 1978; Other Information: PAT-APPL-935962
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
14 SOLAR ENERGY
SEWAGE SLUDGE
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
CELLULOSE
CHLORINATION
FERTILIZERS
SAND
SOLAR DRYING
SULFURIC ACID
CARBOHYDRATES
CHEMICAL REACTIONS
DRYING
HALOGENATION
HYDROGEN COMPOUNDS
INORGANIC ACIDS
MANAGEMENT
ORGANIC COMPOUNDS
POLYSACCHARIDES
PROCESSING
SACCHARIDES
SEWAGE
WASTE MANAGEMENT
WASTES
320305* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Industrial Waste Management
140905