Sustaining Biosolids Recycling Under Phosphorus-Based Nutrient ManagementNearly all states have developed phosphorus (P) site assessment tools (P indices) to rank agricultural fields based on vulnerability to P loss. Using the Pennsylvania P index, 95 active biosolids application fields were evaluated to quantify the impact of mandated P-based management on biosolids recycling. Under existing management, only 22 fields qualify for standard nitrogen (N)-based biosolids...Author(s)Robin C. BrandtHerschel A. ElliottSourceWater PracticeSubjectArticlesDocument typeConference PaperPublisherWater Environment FederationPrint publication date Oct, 2009ISSN1933-1770SICI1933-1770(20091016)3:1L.1;1-DOI10.2175/193317709X12526105489511Volume / Issue3 / 1Content sourceWater PracticeFirst / last page(s)1 - 14Copyright2009Word count158

A Review of Operational Control Strategies for Snail and Other Macrofauna Infestations in Trickling FiltersTrickling filters (TFs) are an ideal habitat for a diverse microbial community enriched with animals, or fauna. Fauna may have a beneficial impact on carbon-oxidizing TF performance when in proper balance, but an infestation can be also detrimental in several ways. State-of-the-art TF-process designs must incorporate mechanisms to manage macro fauna. Snail infestation is a common TF operational...Author(s)Joshua P. BoltzSteven J. GoodwinDana RipponGlen T. DaiggerSourceWater PracticeSubjectArticlesDocument typeConference PaperPublisherWater Environment FederationPrint publication date Jun, 2008ISSN1933-1770SICI1933-1770(20080628)2:4L.1;1-DOI10.2175/193317708X335181Volume / Issue2 / 4Content sourceWater PracticeFirst / last page(s)1 - 16Copyright2008Word count250Subject keywordsTRICKLING FILTERSNAILSMACRO FAUNABIOFILM GRAZINGPREDATIONNITRIFICATIONNITRIFYING TRICKLING FILTERMUNICIPAL WASTEWATER TREATMENTBIOFILM REACTOR