ARS | Publication request: CORRELATION EQUATIONS TO PREDICT THE SOLIDS AND PLANT NUTRIENT REMOVAL EFFICIENCIES FOR GRAVITY SETTLING OF SWINE MANURE

Submitted to: Animal, Agricultural and Food Processing Wastes Symposium
Publication Type: Proceedings
Publication Acceptance Date: June 7, 2003
Publication Date: October 12, 2003
Citation: CHASTAIN, J.P., VANOTTI, M.B. CORRELATION EQUATIONS TO PREDICT THE SOLIDS AND PLANT NUTRIENT REMOVAL EFFICIENCIES FOR GRAVITY SETTLING OF SWINE MANURE. PROCEEDINGS OF ANIMAL, AGRICULTURAL AND FOOD PROCESSING WASTES SYMPOSIUM. 2003. p. 487-495.

Technical Abstract: Experiments were performed to determine the amount of TS, TSS, VS, VSS, COD, TKN, organic-N, total-P, organic-P, and total-K that can be removed from liquid swine manure by settling for 60 minutes. The experiments were conducted using waste samples from three different swine farms. All experiments were replicated 3 times. The swine farms included two pit-recharge manure-handling systems and one flush facility. Significant regression equations were developed from the data that allow the prediction of solids and nutrient content of the influent and effluent manure and removal efficiencies over a TS range of 1730 to 23,850 mg/L. The effects of primary treatment on the ratio of N to P in the settled solids and the effluent and the impact on the design of further treatment processes will be discussed. These data provide needed information to allow engineers to more precisely design gravity settling structures for primary treatment of swine manure.