膜曝气生物膜反应器膜传氧速率的影响因素研究
作者:包进锋,朱品尚,朱圆圆,吴 凯,谢慧峰,黄 霞
单位: 1 浙江开创环保科技股份有限公司,杭州,310000;2 杭州余杭城西净水有限公司,杭州,310000;3 清华大学环境学院,北京,100084
关键词: 膜曝气膜生物反应器;传氧速率;浓度差;影响因素
DOI号:
分类号: TQ028.8
出版年,卷(期):页码: 2023,43(2):123-127

摘要:
 膜曝气生物膜反应器(MABR)膜的传氧性能对MABR工艺的设计具有重要意义,本文通过小试对MABR膜传氧速率的影响因素进行了研究。结果表明,在相同运行条件下MABR膜元件采用并联方式较串联方式更有利于提升MABR膜的传氧性能,平均膜传氧速率随着供气流量的提高先增大后趋于稳定,随着供气压力的升高略有增加,随着反应液温度升高变化不明显,随着测试液中溶解氧浓度的升高而减低;停止供气后,MABR仍具有一定的传氧能力。本研究采用膜组件并联方式连接,在供气压力2 kPa,供气气量100 mL·min-1条件下,平均膜传氧速率达到12.7 g O2·m-2·d-1。
 The oxygen transfer rate (OTR) of the membrane in membrane aerated biofilm reactor (MABR) has a great significance to the design of the MABR process. Factors affecting the OTR of the membrane in MABR were studied in this paper through a laboratory scale test. The results showed that under the same operating conditions the parallel connection mode of membrane modules had a faster OTR than the series connection mode. The average OTR of the membrane increased firstly and then gradually became stable with the increased air flow, increased slightly with the increased air pressure, had a little change with the elevated temperature, and decreased with the increased DO in water. The membrane in MABR had a certain oxygen transfer capacity after the air supply was stopped. Under the conditions of membrane modules connected in parallel, gas pressure of 2 kPa, and air flow of 100 mL·min-1, the average OTR reached as high as 12.7 g O2·m-2·d-1.

基金项目:

作者简介:
包进锋(1972-)浙江金华人,主要研究方向为污水处理技术,E-mail:baojf@zjkchb.com

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