HYBRID REACTOR AND PROCESS FOR REMOVING SELENIUM

摘要

A system for treating wastewater containing selenium has a sequencing batch reactor upstream of a fixed film reactor. The sequencing batch reactor 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.

主权项

1. An apparatus for treating water containing selenium comprising:
a) an upstream sequencing batch reactor; and b) a downstream fixed film reactor reaction vessel coupled with the sequencing batch reactor and configured to remove selenium from water.