Aerobic/anaerobic sludge digestion process
Patent
·
OSTI ID:6326893
A process for digestion of sludge wherein the sludge is oxygenated in a first digestion zone at temperature of from 35 to 75/sup 0/C. To partially reduce the biodegradable volatile suspended solids content of the sludge is described. The partially stabilized sludge is anaerobically digested in a covered second digestion zone at temperature of from 25* to 60/sup 0/C to further reduce the biodegradable volatile suspended solids content of the sludge to less than about 40% of the biodegradable volatile suspended solids content of the sludge introduced to the first digestion zone.
- Assignee:
- Union Carbide Corp
- Patent Number(s):
- US 4246099
- OSTI ID:
- 6326893
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
09 BIOMASS FUELS
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
AEROBIC DIGESTION
ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
DIGESTION
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
OXYGEN COMPOUNDS
PROCESSING
SEWAGE
SEWAGE SLUDGE
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTE WATER
WASTES
WATER
090122 -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604* -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
AEROBIC DIGESTION
ALKANES
ANAEROBIC DIGESTION
BIOCONVERSION
DIGESTION
ELEMENTS
HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
METHANE
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
OXYGEN COMPOUNDS
PROCESSING
SEWAGE
SEWAGE SLUDGE
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTE WATER
WASTES
WATER