Zero-pollutant discharge system for processing papermaking black liquor

Zero-pollutant discharge system for processing papermaking black liquor

The utility model discloses a zero-pollutant discharge system for processing papermaking black liquor. The zero-pollutant discharge system is characterized by comprising a black liquor storing tank (1), a filter (2), a circulating tank (3), a primary nanofiltration membrane device (4), a secondary n...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: ZHOU JIAHUI, LI YINGAN, SHI JINJUN, SHI GUANGLI, LI GANG
Format: Patent
Sprache:eng
Schlagworte:
BEER
BIOCHEMISTRY
CHEMISTRY
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
FERTILISERS
MANUFACTURE THEREOF
METALLURGY
MICROBIOLOGY
MUTATION OR GENETIC ENGINEERING
ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
SPIRITS
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
VINEGAR
WINE
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Beschreibung
Zusammenfassung:The utility model discloses a zero-pollutant discharge system for processing papermaking black liquor. The zero-pollutant discharge system is characterized by comprising a black liquor storing tank (1), a filter (2), a circulating tank (3), a primary nanofiltration membrane device (4), a secondary nanofiltration membrane device (5), a fermentation device (6), and a filtrate collecting barrel (7). Through the adoption of the zero-pollutant discharge system disclosed by the utility model, the papermaking black liquor can be effectively processed, lignin and carbohydrates in the papermaking black liquor are separated and recycled, the concentrated solution of the carbohydrates is fermented so as to obtain butanol and organic fertilizers, and finally, residues in filtrate do not cause secondary pollution. The operation of the system is easy to control, the efficiency is high, and the zero-pollutant discharge system conveniently realizes large-scale popularization and application.