03942970 is referenced by 54 patents and cites 4 patents.

An apparatus for and a process of treating sludge filter cake and the granular product thereof which comprises reducing the particle size and moisture content of the sludge cake, sterilizing the sludge cake by contacting the sludge cake with an N-methylol-urea solution, reacting the N-methylol-urea solution with the sludge cake at a pH of 3 to 5 while agitating the sludge particles to provide a granular-reaction product, and drying the product to provide a granular, high-nitrogen, odorless fertilizer or animal feed supplement product.

Title
Process for treating sewage sludge and fertilizer products thereof
Application Number
196765
Publication Number
3942970
Application Date
May 23, 1974
Publication Date
March 9, 1976
Inventor
James M O Donnell
Slatersville
RI, US
Agent
Richard P Crowley
Assignee
Orgonics
RI, US
IPC
C02C 3/00
C05C 9/00
C05F 3/00
View Original Source