PROCESS FOR REMOVING SELENIUM

A system 10 for treating wastewater 100 containing selenium has a sequencing batch reactor 16 upstream of a fixed film reactor. The sequencing batch reactor 16 may be operated under anoxic conditions while influent is mixed with residual sludge. The SBR reduces total nitrogen, suspended solids, or b...

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Bibliographische Detailangaben
Hauptverfasser: LIU, MINGGANG, FONSECA, NELSON, OWERDIECK, CARSTEN, VICEVIC, GLENN, CUMIN, JEFFREY RONALD
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A system 10 for treating wastewater 100 containing selenium has a sequencing batch reactor 16 upstream of a fixed film reactor. The sequencing batch reactor 16 may be operated under anoxic conditions while influent is mixed with residual sludge. The SBR reduces total nitrogen, suspended solids, or both. Selenium is removed in the fixed film reactor by biological reduction to elemental selenium.