摘要
目的：确定小球藻去除水产行业加工废水中氨态氮的优化环境条件,为利用小球藻处理此类废水的规模化发展提供基础的实验数据.方法：在静止摇瓶培养方式下,逐一改变废水与小球藻培养液的混合体系的初始pH、温度或光照强度等条件,定时测定体系的氨态氮含量,并根据其随培养时间的变化确定优化环境条件.结果：当小球藻藻液的初始浓度为1×106个/mL左右,且小球藻培养液与水产加工废水的配比为3：2时,小球藻去除氨态氮的优化环境条件为：初始pH 7.5、培养温度25℃、光照时间12h/d,光强5 300 lx,此时氨态氮的去除率达到77%.结论：实验条件下小球藻能够较好地去除水产加工废水中的氨态氮,为小球藻规模化处理此类废水提供了基础数据.
Objeelive：The optical environmental condition for removing ammonia- nitrogen from fishery process wastewater by Chlorella vulgaris would be determined, and the foundational experimental data would be provided for disposing this kind of wastewater by it in scale- up. Methods： Under the mode of stationary shake- flask culture, the initial pH of the mixture of wastewater and Chlorella vulgaris culture, temperature and light strength were changed one by one, the content of ammonia - nitrogen in the mixture was determined in a fixed period, so the uptieal environmental condition could be concluded as culture time varied. Results： When the initial concentration of C. vulgaris culture was 1 × 10^6 eells/ mL and the rational ratio of C. vtlgaris culturing medium and wastewater was 3：2, the optimal environmental condition for removing ammomia- nitrogen by C. vvlgaris was followed： pH = 7.5, 25℃, the light period of 12 hours, and the light strength of 5 300 lx, at this condition, the removal rate of ammonia- nitrogen was up to 77%. Conclusion： C. vulgaris could remove ammonia- nitrogen from fishery process wastewater in optical experimental condition, and some foundational experimental data would be provided for disposing this kind of wastewater by C.Chlarella vul garis in scale- up.
出处
《生物技术》
CAS
CSCD
2006年第5期73-74,共2页
Biotechnology
基金
辽宁省博士科研启动基金资助项目(编号:001059)
关键词
小球藻
水产废水
氨态氮
环境条件
Chlorella vulgaris
fishery wastewater
environmnental condition
ammonia- nitrogen
