Wastewater COD Removal
COD is composed of readily biodegradable BOD and refractory organics that resist bacterial attack. COD reduction with a floating bead media filter is accomplished by the removal of organic particulate matter (TSS removal) and through the bacteria oxidation of biodegradable dissolved organics (BOD removal). Refractory organics are best attacked by a pretreatment with ozone which allows the bead filter removing molecular fragments and precipitates that may be formed in the ozonation process.
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