Nitrate effects on the anaerobic sequencing batch reactor treating swine wastes

摘要

The Anaerobic Sequencing Batch Reactor (ASBR) is a new technology that is able to efficiently treat swine waste. This technology was developed by Dr. Richard R. Dague and coworkers at Iowa State University. Previous studies with swine waste have shown that the ASBR system can achieve higher volatile solids destruction and methane yields when compared with other systems treating swine waste. The ASBR has been incorporated into a scheme that would allow for the recycling of treated flush/wastewater from confinement facilities. This scheme includes an aerobic unit which would be used to "freshen up" the waste by converting sulfides and ammonia to both sulfates and nitrates. This recycled waste would be high in nitrates which could possibly inhibit methanogenesis in the ASBR through denitrification.