Method for producing biological fertilizers from sewage

Details Method for producing biological fertilizers from sewage Method for producing biological fertilizers from sewage

1974-03-14

1976-03-16

Spear, Jr., Frank A.

Chemistry: fertilizers

Processes and products

Organic material-containing

71 25, 71 64G, C05F 300, C05F 700, C05F 1100

Patent

active

039444082

ABSTRACT:
A biological fertilizer is prepared by a process which comprises treating sewage sedimentation sludge with sulphite waste liquor, the treatment being carried out at a pH of no more than 6, followed by mixing the mixture of treated sludge and waste liquor with pulverized vegetable matter, whereby to form a biological fertilizer.

REFERENCES:
patent: 517661 (1894-04-01), Powter
patent: 943669 (1909-12-01), Ellis
patent: 1810802 (1931-06-01), Travers et al.
patent: 1933445 (1933-10-01), Murdock
patent: 2087781 (1937-07-01), Randolph
patent: 2117087 (1938-05-01), Formhals
patent: 2813014 (1957-11-01), Allison et al.
patent: 3141759 (1964-07-01), Usse et al.
patent: 3241943 (1966-03-01), Bystrom

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