title: Solids and nutrient removal from flushed swine manure using polyacrylamides.
abstract: Most of the organic nutrient elements (nitrogen and phosphorus) and carbon compounds in liquid swine are contained in fine suspended particles. Flocculation treatment with polyacrylamide (PAM) followed by screening is one the best methods to separate the liquid fraction from the solid fraction in swine manure, and thus to eliminate nutrient elements associated with solids. In this study, the efficiency of a synthetic polyacrylamide to treat swine manure was evaluated. After polymer treatment samples were sieved and the filtrated liquid was analyzed. TSS, VSS and COD concentrations in the liquid fraction were 2.17, 1.93 and 16.42 g/L respectively, accounting for 94, 94 and 77% removal percentages for TSS, VSS and COD using 30 mg/L of PAM.
authors: Agriculture Technological Institute of Castilla y Leon (ITACyL), Livestock Research Area, Carretera de Burgos, Valladolid, Spain.
authors: María
authors: M
authors: Paz Pérez-Sangrador
authors: María
authors: M
authors: Cristina León-Cófreces
authors: Milagros
authors: M
authors: Acítores-Benavente
authors: María
authors: M
authors: Cruz García-González
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000818:Animals; D057919:Biological Oxygen Demand Analysis; D005374:Filtration; D005427:Flocculation; D008372:Manure / Q000032:analysis; D013535:Suspensions; D013552:Swine; D055549:Volatile Organic Compounds / Q000032:analysis; D018505:Waste Management / Q000379:methods*; D000099166:Polyacrylamides
chemical_list: D000180:Acrylic Resins; D008372:Manure; D013535:Suspensions; D055549:Volatile Organic Compounds; D000099166:Polyacrylamides