Study on the Improved A2/O Process Used in Swine Wastewater Treatment

An experiment of treating anaerobic fermented hog pen sewage by improved A²/O reactor was carried out to study the pollution mater reducing rate during the course of combine domestication. After anaerobic fermented cultivation course of hog pen sewage by A²/O technics, tHought the treatment system´s parameters included deliquescent oxygen (DO), hydraulics reside time (HRT) to study the system´s treatment effect. The experiment results indicated the A²/O reactor can successfully run with the firstly independent and secondly united start mode after sixty days. Treated by A²/O reactor the water´s COD and NH₃-N removal rate could reach 90% and 95% while the PO₄^3- was 83%. SS and turbidity both had reduced approximately 90% in the effluent.