Process for the treatment of acrylonitrile waste water

Waste water resulting from acrylonitrile production can be treated by adjusting its pH to 4 to 9 and then subjecting it, at a temperature of 10 to 50 DEG C and a differential pressure of 10 to 80 bar, to reverse osmosis on a membrane. The flow velocity at the membrane is adjusted to a value of 0.5 t...

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Bibliographische Detailangaben
Hauptverfasser:	GRUB, JOACHIM, STUEWE, ARND, HERWIG, JENS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	Waste water resulting from acrylonitrile production can be treated by adjusting its pH to 4 to 9 and then subjecting it, at a temperature of 10 to 50 DEG C and a differential pressure of 10 to 80 bar, to reverse osmosis on a membrane. The flow velocity at the membrane is adjusted to a value of 0.5 to 4 m/sec. The concentrate is returned to the acrylonitrile production process.