利用微藻和微藻膜光反应器从膜生物反应器渗透液中去除营养物质。
Nutrient removal from membrane bioreactor permeate using microalgae and in a microalgae membrane photoreactor.
机构信息
Environmental & Water Technologies Centre of Innovation, Ngee Ann Polytechnic Blk 34, #01-01, 535 Clementi Road, Singapore 599489, Singapore.
出版信息
Bioresour Technol. 2012 Aug;117:80-5. doi: 10.1016/j.biortech.2012.03.125. Epub 2012 Apr 6.
This paper explores the use of a novel microalgae membrane photoreactor (mMR) to polish the effluent from an aerobic membrane bioreactor (MBR) fed with domestic wastewater. Four microalgae species Chlorella (Chlorella sp.), Chlorella vulgaris (C. vulgaris), Scenedesmus quadricauda (S. quadricauda) and Scenedesmus dimorphus (S. dimorphus) were isolated from the environment and tested in batch reactors fed with permeate from the aerobic MBR to evaluate the nutrient removal rates for each species. All four microalgae species were able to completely remove NH4 in the reactor within 3 days. The removal rates of NO3, NO2 and PO4 were between 43-54%, 83-95% and 70-92%, respectively after 3 days in the batch reactor. Subsequently, an MBR-mMR system was operated for 23 days. The mMR was able to remove on average 50% of NH4, 75% of NO2, 35% of NO3 and 60% of PO4 consistently from the MBR effluent under the conditions tested.
本文探讨了一种新型微藻膜光反应器（mMR）在抛光好氧膜生物反应器（MBR）处理生活污水出水方面的应用。从环境中分离出四种微藻物种，即绿藻（Chlorella sp.）、普通小球藻（C. vulgaris）、四尾栅藻（S. quadricauda）和杜氏藻（S. dimorphus），并在批式反应器中用透过好氧 MBR 的渗透液进行测试，以评估每种物种的养分去除率。所有四种微藻物种都能在 3 天内完全去除反应器中的 NH4。在批式反应器中 3 天后，NO3、NO2 和 PO4 的去除率分别为 43-54%、83-95%和 70-92%。随后，MBR-mMR 系统运行了 23 天。在测试条件下，mMR 能够持续从 MBR 出水中去除平均 50%的 NH4、75%的 NO2、35%的 NO3 和 60%的 PO4。
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