摘要
对序批式运行方式强化膜生物反应器脱氮除磷效果进行了研究.在试验过程中逐渐降低进水COD TN值,提高总氮负荷,比较序批式膜生物反应器和传统膜生物反应器的脱氮除磷性能与膜污染状况.试验结果表明,进水COD TN降至3 8～8 3,总氮负荷提高至0 22kg·m-3·d-1时,传统膜生物反应器无法脱氮,而序批式膜生物反应器通过改变周期、提高交换比等方式,TN和氨氮去除率分别保持在67 6%和93 1%.序批式的运行方式还可以减轻膜污染.
A sequencing batch membrane bioreactor was developed to enhance the nitrogen and phosphorus removal. Its performance was investigated by decreasing the COD/TN of influent and increasing the ammonium nitrogen loads gradually to study its characteristics in nitrogen and phosphorus removal and the membrane fouling with the conventional membrane bioreactor systems. When the COD/TN of influent was decreased to 3.8～8.3 and ammonium nitrogen loads was 0.22(?kg·m^(-3)·d^(-1)), the TN and ammonium nitrogen removal efficiencies of SBMBR(sequencing batch membrane bioreactor) could be maintained at 67.6% and 93.1%, respectively, by changing the running period and increasing the change ratio, etc. Whereas the conventional membrane bioreactor could not work so well. The sequencing batch operation of membrane bioreactor could also reduce the membrane fouling.
出处
《环境科学学报》
CAS
CSCD
北大核心
2005年第2期242-248,共7页
Acta Scientiae Circumstantiae
基金
国家自然科学基金资助(50308004)
