| 沼液养殖钝顶螺旋藻的中试研究 |
| 摘要点击 2359 全文点击 1116 投稿时间：2014-01-18 修订日期：2014-02-28 |
| 查看HTML全文
查看全文 查看/发表评论 下载PDF阅读器 |
| 中文关键词 钝顶螺旋藻 沼液 总氮 总磷 富营养化 |
| 英文关键词 Spirulina platensis digested piggery wastewater(DPW) total nitrogen total phosphorus eutrophication |
| 作者 | 单位 | E-mail | | 国青青 | 上海师范大学生命与环境科学学院, 上海 200234
浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | guoqinqin4166@163.com | | 刘锐 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | liuruitsinghuazj@gmail.com | | 罗金飞 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | | | 王根荣 | 嘉兴市南湖区农业经济局, 嘉兴 3140006 | | | 陈吕军 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006
清华大学环境学院, 北京 100084 | | | 刘笑 | 浙江清华长三角研究院生态环境研究所, 浙江省水质科学与技术重点实验室, 嘉兴 314006 | |
|
| 中文摘要 |
| 在室外中试规模的跑道池中，使用混凝沉淀处理后的沼液养殖高耐污钝顶螺旋藻，研究了螺旋藻的生长情况以及沼液中氮磷的去除情况，计算了沼液中氮磷向螺旋藻体的转化效率. 在此基础上，结合小试研究，分析总结了使用沼液室外规模化养殖螺旋藻过程中存在的问题和对策. 以12 d为一个培养周期，总共进行了6批次培养试验，其中3批次培养的螺旋藻浓度能够达到采收要求（D560>0.8）；而另外3批次未能收获螺旋藻. 成功的3个养殖批次中，螺旋藻采收后沼液中COD、氨氮、总氮、总磷分别减少了28.6%~48.5%、30.4%~48.5%、41.8%~48.6%、14.3%~94.5%；其中去除的总氮和总磷向螺旋藻细胞的转化率分别为12.1%~98.5%和21.2%~83.7%. 沼液中的高浓度氨氮以及残存虫卵孵化产生的虫害是导致另外3批次培养螺旋藻生长缓慢的主要因素，使用生物处理技术降低沼液中氨氮含量、使用膜过滤技术去除沼液中虫卵对于稳定获得高产率的螺旋藻非常必要. |
| 英文摘要 |
| The swine waste pretreated with coagulation sedimentation was used for the outdoor pilot-scale cultivation of Spirulina platensis isolated from digested piggery wastewater (DPW) in a raceway pond. The growth of S. platensis and removal of nitrogen/phosphorus were studied, moreover, the conversion efficiency of total nitrogen (TN) or total phosphorus (TP) from DPW to S. platensis was calculated. On this basis, the existing problems and countermeasures during outdoor pilot-scale culture were analyzed and summarized combined with the laboratory research. We conducted 6 batches culture experiments, only 3 of which could reach the S. platensis harvest requirements (D560>0.8). Meanwhile, the 3 successful batches achieved removal of COD, ammonia nitrogen, TN, TP with corresponding 28.6%-48.5%, 0.4%-48.5%, 41.8%-48.6%, 14.3%-94.5%, and the conversion efficiency of TN or TP from DPW to S. platensis reached 12.1%-98.5%, 21.2%-83.7%, respectively. High concentration of ammonia nitrogen and insect attack of remaining egg hatching in the pretreated swine waste were the main factors to cause the slow-growing of the 3 batches of S. platensis. Therefore, it is highly necessary for the removal of ammonia nitrogen with biological treatment technology and insect eggs with membrane to achieve a stable high productivity. |
|
|
|
