摘要
为研究城市污水培养富油蛋白核小球藻(Chlorella pyrenoidsa)的可行性,分别采用了高压和紫外2种方式进行城市污水的灭菌,对蛋白核小球藻进行培养,考察了净化水质的效果及其油脂含量和脂肪酸组成的变化.结果表明:该株蛋白核小球藻有较高的耐污能力,对城市污水有较好的净化效果.紫外灭菌和高压灭菌后培养的蛋白核小球藻对水质的净化效果差别不大,其中COD去除率高于67.0%,总氮和氨氮去除率高于95%,总磷去除率最高达到92.87%,其中紫外灭菌培养的藻在生长初期对COD的去除率更有效.高压灭菌后培养的藻的生物量是紫外灭菌后培养的藻生物量的1.43倍,灭菌方式对城市污水培养藻的油脂含量的影响较小.基于生产的成本和操作的便利性,紫外灭菌方式更适用于基于城市污水大规模养藻系统.
The potential use of municipal sewage on cultivation of oil-enriched Chlorella pyrenoidsa was investigated.The influence of autolave disinfection and UV sterilization on oil production of the microalgae and their culture efficiency were also compared.The results showed that this strain of microalgae has a relatively high tolerance to contaminated municipal sewage.Both the two methods of disinfection removed 67.0 % of COD,95 % of total nitrogen and ammoniacal nitrogen,and 92.8 % of total phosphorus.The biomass of the microalgae with medium sterilized by autoclaving was 1.43 times of that by UV sterilization,but resuleted in a small difference on oil content of the microalgae cells.However,taking into accounts of the cost and convenience of proceeding,UV sterilization is considered more suitable for large scale cultivation of microalgae by municipal sewage.
出处
《中南民族大学学报（自然科学版）》
CAS
2011年第3期38-41,共4页
Journal of South-Central University for Nationalities：Natural Science Edition
基金
国家自然科学基金资助项目(50907074)
关键词
蛋白核小球藻
灭菌
城市污水
油脂含量
Chlorella pyrenoidsa
methods of sterilization
urban sewage
oil content
