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Nutrient Recovery From Anaerobically-Digested Dairy Manure By Struvite Formation And Its Effect On Gas Releases, Zhong Qiao
Open Access Theses
Manure management practices such as anaerobic digestion and lagoon storage have become important issues for large dairy farms partially due to water quality and air quality concerns caused by excess nitrogen and phosphorus. Prior research efforts have proven that struvite formation is an effective method for nutrients recovery from both municipal and agricultural wastewaters. However, little is known about nutrient recovery through struvite formation from anaerobically-digested dairy manure effluents.The effects of struvite precipitation on the releases of gases such as NH3, H2S, and CO2 are also unclear.
In this thesis, both bench-scale tests and pilot-scale storage tests were conducted to …