摘要
以尼龙网为膜材料构建动态膜生物反应器(DMBR)并处理生活污水,分析了曝气量(0、10、23.3 L/min)、膜孔径(200、300、400、500目)、出水水头(3、5、8、10 cm)对动态膜形成的影响,以及出水中颗粒物的粒径分布。结果表明,曝气量过大则动态膜不易形成,而在不曝气的条件下,动态膜形成时间短,系统稳定运行时间长;400目的膜孔径既能保持较高的稳定出水通量,又浊度较低,强度高,耐久性好;随着水头的增加,初始通量增大,动态膜也更易形成;通过颗粒物粒径分析,在动态膜形成的过程中,各粒径的颗粒物均得到了不同程度的去除。
A dynamic membrane bioreactor （DMBR） was constructed by using nylon mesh as membrane material for domestic sewage treatment. The influence of aeration rates （0, 10 and 23.3 L/ min） , membrane pore size （200, 300,400 and 500 mesh） and water head （3, 5, 8 anti 10 cm） on the formation of dynamic membrane as well as the particle size distribution of the particulate matter were analyzed. The results showed that the dynamic membrane was difficult to form with excessive aeration, while without aeration, the formation time of dynamic membrane was short, and the system had long stable running time. The membrane pore size with 400 mesh could maintain at a high effluent flux, with low turbidity, high strength and good durability. With the rising of water head which was considered as the water power of DMBR, the initial flux was gradually increased, and dynamic membrane was formed more easily. The particles with different size were removed to different extents in the process of the formation of dynamic membrane.
出处
《中国给水排水》
CAS
CSCD
北大核心
2015年第21期30-33,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2011AA060903)
国家自然科学基金资助项目(51508450)
国家水体污染控制与治理科技重大专项(2014ZX07315002)
陕西省污水处理与资源化重点科技创新团队项目(2013KCT-13)
关键词
动态膜生物反应器
动态膜
曝气量
膜孔径
水头
颗粒粒径
dynamic membrane bioreactor
pore size
water head
particle size dynamic membrane
aeration rate
membrane pore size
water head
particle size
