TY - JOUR
T1 - Cultivation of aerobic granular sludge with a mixed wastewater rich in toxic organics
AU - Liu, Li
AU - Sheng, Guo-Ping
AU - Li, Wen-Wei
AU - Tong, Zhong-Hua
AU - Zeng, Raymond J.
AU - Liu, Jun-Xin
AU - Xie, Jie
AU - Peng, Shu-Chuan
AU - Yu, Han-Qing
PY - 2011
Y1 - 2011
N2 - Aerobic granular sludge was successfully cultivated in a sequencing batch reactor fed with a mixture of chemical industrial wastewater rich in toxic organics and the effluent from an anaerobic acidogenic reactor. After 30-day operation, stable granules with a size of 1.0–3.0mm were obtained. These granules appeared to have rougher surface than those cultivated with the carbohydrate- or acetate-rich wastewaters. There exhibited a “core” in the internal structure of the granules, which might benefit microorganisms to survive and resist the harsh environment. The formation of granules significantly improved the ability of sludge to withstand the toxic substances. The chemical oxygen demand removal efficiency of the granule-based reactor could reach around 80%, while its ammonia and total nitrogen removal efficiencies reached 90% and 40%, respectively. The aerobic-granule-based reactor showed an ability to resist the wastewater toxicity.
AB - Aerobic granular sludge was successfully cultivated in a sequencing batch reactor fed with a mixture of chemical industrial wastewater rich in toxic organics and the effluent from an anaerobic acidogenic reactor. After 30-day operation, stable granules with a size of 1.0–3.0mm were obtained. These granules appeared to have rougher surface than those cultivated with the carbohydrate- or acetate-rich wastewaters. There exhibited a “core” in the internal structure of the granules, which might benefit microorganisms to survive and resist the harsh environment. The formation of granules significantly improved the ability of sludge to withstand the toxic substances. The chemical oxygen demand removal efficiency of the granule-based reactor could reach around 80%, while its ammonia and total nitrogen removal efficiencies reached 90% and 40%, respectively. The aerobic-granule-based reactor showed an ability to resist the wastewater toxicity.
U2 - 10.1016/j.bej.2011.07.005
DO - 10.1016/j.bej.2011.07.005
M3 - Journal article
SN - 1369-703X
VL - 57
SP - 7
EP - 12
JO - Biochemical Engineering Journal
JF - Biochemical Engineering Journal
ER -