High nitrogen and phosphorous content biomass produced by treatm

Details High nitrogen and phosphorous content biomass produced by treatm High nitrogen and phosphorous content biomass produced by treatm

1977-07-25

1979-07-24

Wyse, Thomas G.

Chemistry: fertilizers

Processes and products

Organic material-containing

210DIG28, C02C 106

Patent

active

041621530

ABSTRACT:
An organic product material having a high nitrogen and phosphorous content is produced as the product of a biological system for the treatment of a BOD-containing influent which also contains phosphorous and fixed nitrogen. The biological treatment system comprises the reaction of a mixed liquor composed of an activated biomass and a BOD-containing influent initially under anaerobic conditions and thereafter treating such mixed liquor under oxic conditions. The treated material is then separated into a supernatant liquid in which the BOD is depleted and a dense, activated biomass. A portion of this biomass is employed in forming the mixed liquor for the initial anaerobic treatment, while the remaining portion of the biomass is recovered as product. The living biomass product can be used in the fermentation industries. Alternatively, the product can be used as such or further processed, e.g. dried, for employment as a fertilizer or a nutrient in animal feeds.

REFERENCES:
patent: 3764523 (1973-10-01), Stankewich
patent: 3939068 (1976-02-01), Wendt et al.
patent: 3953327 (1976-04-01), Parker
patent: 3964998 (1976-06-01), Barnard
patent: 3994802 (1976-11-01), Casey et al.
patent: 4056465 (1977-11-01), Spector

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