一种新型藻类生物膜膜光生物反应器，用于附着微藻生长和从二级出水去除营养物质。
A novel algal biofilm membrane photobioreactor for attached microalgae growth and nutrients removal from secondary effluent.
机构信息
College of Marine Science, Zhejiang Ocean University, Zhoushan 316000, China; College of Environmental Science and Engineering, Hunan University, Changsha 410082, China.
College of Environmental Science and Engineering, Hunan University, Changsha 410082, China; Key Laboratory of Environmental Biology and Pollution Control (Hunan University), Ministry of Education, Changsha 410082, China.
出版信息
Bioresour Technol. 2015 Mar;179:8-12. doi: 10.1016/j.biortech.2014.11.108. Epub 2014 Dec 4.
In this study, a novel algal biofilm membrane photobioreactor (BMPBR) equipped with solid carriers and submerged membrane module was developed for attached growth of Chlorella vulgaris and secondary effluent treatment. The volumetric microalgae production achieved in BMPBR was 0.072 g L(-1) d(-1), which was 1.44-fold larger than that in suspended growth membrane photobioreactor (MPBR). Furthermore, 72.4% of the total produced algal biomass was immobilized as algal biofilm in BMPBR. Advanced nutrients removal from secondary effluent was achieved both in BMPBR and MPBR, with average reduction of about 85% for PO4(3-)-P in the stable stage. Additionally, BMPBR showed better nitrogen removal performance than MPBR due to its higher algal biomass productivity. Moreover, with the filtration effect of the submerged membrane module in the reactor, suspended microalgae could be completely isolated from the effluent and a low average SS concentration of 0.28 mg L(-1) was achieved in the effluent of BMPBR.
在这项研究中，开发了一种新型的藻类生物膜膜光生物反应器（BMPBR），配备了固体载体和浸没式膜组件，用于小球藻的附着生长和二级出水处理。BMPBR 中的体积微藻产量达到 0.072 g L(-1) d(-1)，是悬浮生长膜光生物反应器（MPBR）的 1.44 倍。此外，在 BMPBR 中，72.4%的总生物量被固定为藻类生物膜。BMPBR 和 MPBR 均能实现对二级出水的高级营养物去除，稳定阶段 PO4(3-)-P 的平均去除率约为 85%。此外，由于藻类生物量生产力较高，BMPBR 具有比 MPBR 更好的氮去除性能。此外，由于反应器中浸没式膜组件的过滤效果，悬浮微藻可以被完全从出水中分离出来，BMPBR 的出水中平均 SS 浓度达到 0.28 mg L(-1)。
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