title: A theoretical and practical evaluation of struvite control and recovery.
abstract: Struvite accumulation is a costly problem in many water resource recovery facilities (WRRFs) that use anaerobic digestion, causing significant labor and equipment costs and potentially impacting facility performance and permit compliance. A comprehensive study was undertaken to evaluate possible solutions to struvite control at two similar Miami-Dade County, Florida, WRRFs. Alternatives analyzed included periodic cleaning and repair of damaged piping and equipment; optimum ferric salt dosing, use of in situ scaling coupons; and engineered struvite precipitation. The effectiveness and cost of each alternative was evaluated using a newly constructed dynamic process model and a net present worth analysis. Results indicate that nutrient recovery was a potential benefit at both facilities. This study establishes a comprehensive process and specific testing protocols for evaluating struvite control alternatives.
authors.affiliation: Department of Civil and Environmental Engineering, Manhattan College, 3825 Corlear Avenue, Leo Hall Room 309, Bronx, N.Y. 10463, USA. Robert.sharp@manhattan.edu
authors.forename: Robert
authors.initials: R
authors.lastname: Sharp
authors.forename: Enrique
authors.initials: E
authors.lastname: Vadiveloo
authors.forename: Robert
authors.initials: R
authors.lastname: Fergen
authors.forename: Manuel
authors.initials: M
authors.lastname: Moncholi
authors.forename: Paul
authors.initials: P
authors.lastname: Pitt
authors.forename: David
authors.initials: D
authors.lastname: Wankmuller
authors.forename: Ron
authors.initials: R
authors.lastname: Latimer
mesh_terms: D017616:Magnesium Compounds / Q000737:chemistry*; D008956:Models, Chemical; D010710:Phosphates / Q000737:chemistry*; D000069877:Struvite; D018508:Water Purification
chemical_list: D017616:Magnesium Compounds; D010710:Phosphates; D000069877:Struvite