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ARS Home » Southeast Area » Florence, South Carolina » Coastal Plain Soil, Water and Plant Conservation Research » Research » Publications at this Location » Publication #311186
Title: Decline of phosphorus, copper, and zinc in anaerobic lagoon columns receiving pretreated influent

Author
item Szogi, Ariel
item Vanotti, Matias

Submitted to: Meeting Proceedings
Publication Type: Proceedings
Publication Acceptance Date: 12/13/2014
Publication Date: 5/5/2015
Publication URL: http://www.sbera.org.br/4sigera/
Citation: Szogi, A.A., Vanotti, M.B. 2015. Decline of phosphorus, copper, and zinc in anaerobic lagoon columns receiving pretreated influent. In: Proceedings IV SIGERA-International Symposium on Agricultural and Agroindustrial Waste Management, May 5-7, Rio de Janeiro, Brazil. p.32-35.

Interpretive Summary:

Technical Abstract: In a 15-month meso-scale column study, we evaluated the effect of manure pretreatment on reduction of total suspended solids (TSS), total phosphorus (TP), soluble reactive phosphorus (SRP), copper (Cu) and zinc (Zn) in swine lagoons using (i) enhanced solid–liquid separation with polymer (SS) and (ii) solid–liquid separation plus biological nitrogen treatment using nitrification–denitrification (SS + NDN). A conventional anaerobic lagoon treatment was included as a control. Even though both pretreatments significantly reduced phosphorus (P), TP and SRP were negatively correlated (r = -0.51 to -0.87) with the TSS in the liquid of lagoon columns possibly because of dissolution of P from the sludge into the overlying lagoon liquid. On the other hand, the removal of solids by both pretreatments effectively reduced Cu and Zn concentrations in the lagoon column liquid; their concentrations were positively correlated (r = 0.79 to 0.90) with TSS concentrations. The net mass accumulation of TP, Cu, and Zn in the lagoon columns declined with both liquid pretreatments with respect to the control: TP mass declined by 65% with SS and by 84% with SS + NDN; Cu declined by 80% with SS and 112% with SS+NDN; and Zn declined by 73% with SS and 104% with SS+NDN. The reduction of solids input and decline in mass accumulation of TP, Cu, and Zn in sludge can help minimize sludge removal for lagoon maintenance and land area for disposal.