Generation 3 Treatment Technology for Swine Waste Incorporating Flushing Systems.

Major goals in the demonstration and verification of a third-generation wastewater treatment system for swine manure were achieved. These goals included replacement of anaerobic lagoon treatment, adaptation of the system to receive higher volume of liquid waste typical of flushing systems, and efficient environmental performance when installed in larger swine farms.  The treatment provided full-scale treatment to a large swine farm with approximately 1,168,200 kg steady-state live weight (SSLW).  It processed all the manure from a 1,200-sow operation (Farrow to Feeder) with flushing system (103,000 L manure/day) and a 12,960 Feeder to Finish operation with pit recharge (183,000 L manure/day).   A new decanting tank was effective to concentrate the diluted manure from flushing systems and increase solid separator press capacity and polymer effectiveness.  Average mass reductions obtained were:   98.6% TSS, 98.1% COD, 100% Ammonia-N, 96.7% of TN, 91.9% of TP, 95.4% Cu, 97.0% Zn, and 100% odor compounds.  For pathogens, the system reduces F.C. < 7,000 MPN/100 mL when the P module is operated at pH 10.  It was verified that the third-generation technology is technically and operationally feasible and can meet the high environmental standards demonstrated in previous versions.