ReCip® Wastewater Technologies: Effects of Substrate Types and System Configurations
Abstract:Microcosm-scale experiments were conducted in replicated reciprocating fill-and-drain biofilter systems to evaluate treatment efficacy of several substrates as compared to a no-substrate control (2-cell reciprocating lagoon). The three substrates (rock, bioballs and a non-woven textile fiber (geo-mat), were tested in two treatment configurations (systems with and without a paired lagoon cell). Concentration dynamics were monitored over a 96 hour period to determine removal rates for chemical oxygen demand (COD), total ammonia nitrogen (TAN), nitrate-nitrogen (NO3-N), and soluble ortho-phosphate (P04-P). With respect to COD and TAN removal rates, results revealed that paired reciprocating configurations containing one lagoon cell and one substrate-filled cell were nearly as effective as configurations containing two substrate-filled cells. COD removal ranged from 73% (lagoon only control) to 97% for treatments with substrates. COD removal was consistently high for all substrates and system configurations (93–97%). Treatments with rock substrate or geo-mat were more effective at removing TAN (91–99%) than treatments with bioballs alone (65%) or the lagoon control (21%). Nitrate nitrogen increased progressively over time as a function of treatment specific ammonia oxidation and as an indication of carbon limitation. Phosphorus removal over the four day trial averaged 42 and 69 percent respectively in lagoon/rock and rock/rock treatment configurations. Phosphorus removal was less than 15% for treatments containing bioballs or geo-mat, irrespective of treatment configuration.
Document Type: Research Article
Publication date: January 1, 2009
More about this publication?
- Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed. WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access.
- Subscribe to this Title
- Membership Information
- About WEF Proceedings
- WEFTEC Conference Information
- ingentaconnect is not responsible for the content or availability of external websites