栅藻贴壁培养处理沼液效果的研究

程鹏飞; 潘璐; 王愿珠; 刘天中; 刘德富

文章摘要

程鹏飞,潘璐,王愿珠,刘天中,刘德富.栅藻贴壁培养处理沼液效果的研究[J].农业环境科学学报,2017,36(5):996-1002.

栅藻贴壁培养处理沼液效果的研究

The treatment of piggery biogas slurry with Scenedesmus sp. by attached culture

投稿时间：2016-11-25

DOI：10.11654/jaes.2016-1506

中文关键词: 栅藻贴壁培养沼液废水油脂生产处理

英文关键词: Scenedesmus sp. attached culture swine wastewater lipid product treatment

基金项目:国家自然科学基金项目（31560724）；中国博士后科学基金资助项目（2016M600616）

作者	单位	E-mail
程鹏飞	武汉大学水利水电学院, 武汉 430072 九江学院鄱阳湖生态经济研究中心, 江西九江 332005
潘璐	湖北工业大学土木建筑与环境学院, 武汉 430072
王愿珠	三峡大学水利与环境学院, 湖北宜昌 443002
刘天中	中国科学院青岛生物能源与过程研究所, 山东青岛 266101
刘德富	湖北工业大学土木建筑与环境学院, 武汉 430072	dfliu@189.cn

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中文摘要:

以栅藻（Scendesmus dimorphus）为研究对象，将微藻培养和养猪沼液废水处理相结合，通过贴壁培养在处理沼液废水的同时耦合藻类油脂生产，并比较了栅藻贴壁培养与悬浮培养藻细胞生长情况及对N的利用效率，为藻类生物燃料生产及降低沼液废水处理成本提供理论依据。结果表明：贴壁培养下藻细胞生物产率为6.15 g·m^-2·d^-1，高于栅藻悬浮培养的生物产率5.48 g·m^-2·d^-1；贴壁培养下藻细胞对N的吸收率为85.23%，高于悬浮培养N的利用率77.84%。在初始NH₃-N、TP及COD浓度分别为281.2、29.1、551 mg·L^-1的沼液废水中贴壁培养栅藻，藻类生长状况与正常BG₁1培养相近，生物产率分别为6.26 g·m^-2·d^-1与6.23 g·m^-2·d^-1；油脂含量相差不大，分别占细胞干重的34.6%、35.2%；沼液废水中NH₃-N、TP及COD去除效率分别为99.04%、73.06%和72.32%。

英文摘要:

The current study investigated the treatment of swine (piggery) wastewater with Scenedesmus sp. by using attached cultivation technique, coupled with lipid production. Firstly, we compared the attached culture of Scenedesmus sp. with aqueous-suspension cultivation in BG₁1 medium, and studied the growth of algae and nitrogen removal efficiency. Results showed that the biomass productivity of Scenedesmus sp. with attached culture was 6.15 g·m^-2·d^-1, as compared with the 5.48 g·m^-2·d^-1 of the aqueous-suspension cultivation. The nitrogen removal efficiency of the attached culture was also significantly higher than that of the aqueous-suspension cultivation, which were 85.23% and 77.84%, respectively. In addition, results showed that Scenedesmus sp. could grow well in swine wastewater at light intensity of 100 μmol·m^-2·s^-1 and temperature of (25±1) ℃. Compared with algae cultured in BG₁1 medium, the biomass productivity and lipid content were 6.26 g·m^-2·d^-1 vs 6.23 g·m^-2·d^-1 and 34.6% vs 35.2%, respectively. Notably, Scenedesmus sp. with attached culture could treat swine wastewater efficiently, with ammonia nitrogen, total phosphorus (TP) and COD removal efficiency of 99.04%, 73.06% and 72.32%. Based on the results, a process combining algae-based wastewater treatment with attached cultivation and biodiesel production can be proposed as an effective way to treat raw swine wastewater as well as produce profitable byproducts.

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