RECOVERY OF NUTRIENTS FROM WATER AND WASTEWATER BY PRECIPITATION AS STRUVITE

摘要

The present invention generally relates to a process for converting waste to nutrients. Preferably, the subject invention relates to systems and methods for recovering nutrients from wastewaters. More preferably, the subject invention relates to systems and methods for processing anaerobically treated cellulosic stillage generated from ethanol production to recover struvite precipitate. According to the present invention, a sequential batch reactor is provided for recovery of nutrients via struvite precipitation from cellulosic ethanol stillage seeded with stillage fibrous biomass. The effect of seeding using stillage biomass as seeding decreases time for struvite precipitation and settling within the reactor.