Investigation into Integrated Phosphorus and Ammonia Recovery in Swine Applications

Proposed Project SummaryInvestigation into Integrated Phosphorus and Ammonia Recovery in Swine ApplicationsPrincipal Investigator:Rick Johnson Applied Environmental Solutions LLCCo-Principal Investigator:Kayla Piezer Applied Environmental Solutions LLCCo-Principal Investigator: Hannah Cordes University of ToledoThis project will investigate the reduction of excessive phosphorus and ammonia in deep-pit swineapplications using an integrated phosphorus and ammonia recovery solution with an emphasis onthe use of OMRI listed consumables.This investigation will accomplish the following objectives:This proposal has the following 6 primary objectives:1. Develop and perform bench-scale evaluations/demonstrations of an integrated process thatallows for the recovery of both nitrogen (NH ) and phosphorus4 2. Develop models (1) kinetic model for phosphorus recovery and (2) mass transfer model forammonia recovery - that can be used to further scale-up the integrated process3. Confirm the ability to reduce high total phosphorus levels in swine manure operations throughits recovery as a valued well-balanced product with a goal of 95% recovery4. Confirm the ability to reduce ammonium levels in a QW-P treated stream after removal of therecovered phosphorus precipitate the goal is 90% recovery5. Identify potential market values of the phosphorus and ammonium recovered products to serveas a cost recovery mechanism as well as the fully treated water and6. Evaluate process economics to include annual operating costs estimated capital costs and NetPresent Value assuming a 5% discounted rate and 10-year life.These estimates will bedeveloped with and without potential market value of recovered phosphorus and ammoniumnutrients. The goal is to be competitive to land application costs in the greater Mercer County(OH) region.In pursuit of the above objectives laboratory bench testing will be conducted to develop processflux characteristics on swine manure that has been first treated for phosphorus recovery.Onceidentified additional laboratory bench testing will be conducted to investigate and optimizevarious flow strategies for both the post-phosphorus treated stream and acid receptor stream.Initial efforts will consider the use of sulfuric acid to produce ammonium sulfate and citric acid toproduce ammonium citrate for potential use in the organic market.At the conclusion of theinvestigations a detailed techno-economic analysis will be conducted to establish initial annualoperating costs estimated capital costs and net present value (10-year life) with and withoutconsideration of the potential co-product stream values.AES Confidential