摘要：This work aimed at monitoring the formation of aerobic granular sludge in a SBR prototype and at evaluating its performance. The SBR was operated in two different phases (A and B), both fed with real domestic sewage and operated with 6-h cycles, but using different types of inocula: biological sludge from an extended aeration activated sludge system (in Phase A) and biological sludge from a conventional activated sludge system (in Phase B). During This study aimed to evaluate the combined treatment of leachate from landfill and sanitary sewage using ozone on upward flow oxidation reactor. The tests were conducted in batches, taking five and two hours of ozonation with 8.9; 9.6 and 10.5 g O 3 .h -1 , applied to the mixture of 2% of leachate from sanitary landfill and 98% of sanitary sewage (v/v). The test was performed in triplicate with monitoring of COD, BOD, color, turbidity and pH. The results showed that ozone is a viable alternative for the pre-treatment of the mixture containing landfill leachate and sewage, facilitating the post-treatment in a biological process. It was observed removals of COD, BOD, apparent and true color and turbidity of 46%, 51%, 86%, 86% and 81% respectively in 5 hours of test, and average removals of 23%, 48%, 78%, 76% and 58% respectively for 2 hours of test.
其他摘要：This work aimed at monitoring the formation of aerobic granular sludge in a SBR prototype and at evaluating its performance. The SBR was operated in two different phases (A and B), both fed with real domestic sewage and operated with 6-h cycles, but using different types of inocula: biological sludge from an extended aeration activated sludge system (in Phase A) and biological sludge from a conventional activated sludge system (in Phase B). During This study aimed to evaluate the combined treatment of leachate from landfill and sanitary sewage using ozone on upward flow oxidation reactor. The tests were conducted in batches, taking five and two hours of ozonation with 8.9; 9.6 and 10.5 g O 3 .h -1 , applied to the mixture of 2% of leachate from sanitary landfill and 98% of sanitary sewage (v/v). The test was performed in triplicate with monitoring of COD, BOD, color, turbidity and pH. The results showed that ozone is a viable alternative for the pre-treatment of the mixture containing landfill leachate and sewage, facilitating the post-treatment in a biological process. It was observed removals of COD, BOD, apparent and true color and turbidity of 46%, 51%, 86%, 86% and 81% respectively in 5 hours of test, and average removals of 23%, 48%, 78%, 76% and 58% respectively for 2 hours of test.
