Method for recovery of waste water residues

Patent · Tue Nov 06 00:00:00 EST 1984

OSTI ID:6025018

Grudinin, V P; Bukhteev, B M; Dergunova, T V

A method for recovery of waste water residues containing the activated sludge biomass, fibre and bark comprising the steps of treating these with alkali solution having a concentration of 5-80 g/l on the Na/sub 2/O basis at a temperature of 20/sup 0/-70/sup 0/ C. and dewatering the reaction mixture obtained, the alkali filtrate decanted containing the activated sludge alkali hydrolysis products being used to dissolve the melt in the course of preparing the alkali pulping liquor, and the dewatered alkali mass being added, in an amount of up to 40 percent by mass, to the fibred mass composition for the manufacture of cardboard and wood-fibre board.

• Assignee: Vsesojuznoe Nauchno-Proizvodstven Noe Obiedinenie Tselljulozno-Bumazhnoi Promyshlennosti (Union of Soviet Socialist Republics)
• Patent Number(s): US 4481072
• OSTI ID: 6025018
• Resource Relation: Patent Priority Date: Priority date 20 Aug 1982, Union of Soviet Socialist Republics (USSR); Other Information: PAT-APPL-410162
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
BIOMASS
MATERIALS RECOVERY
PAPER INDUSTRY
WASTE PRODUCT UTILIZATION
WASTE WATER
FILTRATION
WATER TREATMENT
WOOD
DEHYDRATION
FIBERS
HYDROLYSIS
MEDIUM TEMPERATURE
PURIFICATION
RESIDUES
SLUDGES
SODIUM OXIDES
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
HYDROGEN COMPOUNDS
INDUSTRY
LIQUID WASTES
LYSIS
MANAGEMENT
OXIDES
OXYGEN COMPOUNDS
PROCESSING
RECOVERY
RENEWABLE ENERGY SOURCES
SEPARATION PROCESSES
SODIUM COMPOUNDS
SOLVOLYSIS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES
WATER
WOOD PRODUCTS INDUSTRY
140504* - Solar Energy Conversion- Biomass Production & Conversion- (-1989)