Solar chemical process for sludge treatment

Details Solar chemical process for sludge treatment Solar chemical process for sludge treatment

1978-08-22

1980-03-04

Hart, Charles N.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 25, 8118, 162 4, 162 6, 162 9, 162DIG9, 210 66, 34 93, C05F 1300

Patent

active

041915496

ABSTRACT:
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.

REFERENCES:
patent: 99248 (1870-01-01), Sheldon
patent: 137452 (1873-04-01), Karcheski
patent: 1482939 (1924-02-01), McIntosh
patent: 2279848 (1942-04-01), Unger, Jr.
patent: 3342731 (1967-09-01), Baumann
patent: 3361186 (1968-01-01), Wildi et al.
patent: 3561598 (1969-10-01), Goldberg
patent: 3932166 (1976-01-01), Vignovich
patent: 4028130 (1977-06-01), Webster et al.
Modern Pulp and Paper Making, Witham, 1942, pp. 70-71.

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