摘要
利用小球藻和好氧细菌共培养用于处理不同C/N(4:1和8:1)的油田污水。结果显示,相比于低C/N(4:1)污水,高C/N(8:1)的污水中获得的总生物量更大,小球藻比生长速率和叶绿素含量更高。藻菌共生系统对高C/N污水的SCOD和TN的去除分别为62.13%和30.70%,均高于低C/N污水。进一步探讨了C/N对小球藻和好氧细菌在降解不同污染物中的作用。在低C/N污水中,细菌在去除SCOD方面起着主导作用,小球藻对TN降解贡献更大。而在高C/N污水中,微藻对有机物去除能力更强,好氧菌对氮营养的吸收更多。
In this study,a symbiotic culture of Chlorella and aerobic bacteria was used to treat oilfield effluents with different C/N(4:1 and 8:1).The results showed that compared to the low C/N(4:1)effluent,the total biomass obtained was greater and Chlorella had a higher growth rate and chlorophyll content in the high C/N(8:1)effluent.The removal of SCOD and TN by the algal and bacteria symbiosis system was 62.13%and 30.70%for high C/N effluent,respectively,which were higher than that of low C/N effluent.The role of C/N on Chlorella and aerobic bacteria in the degradation of different pollutants was further explored.In the low C/N effluent,bacteria played a dominant role in removing SCOD and Chlorella contributed more to TN degradation.In contrast,in high C/N effluent,microalgae were more effective in organic removal and more nitrogen nutrients were absorbed by aerobic bacteria.
作者
李冉
赵进
郭丹
王亮亮
潘杰
LI Ran;ZHAO Jin;GUO Dan;WANG Liangliang;PAN Jie(College of Petroleum Engineering,Xi'an Shiyou University,Xi'an 710065,China;Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil&Gas Reservoirs,Xi'an Shiyou University,Xi'an 710065,China;Hade Oil and Gas Management Zone,PetroChina Tarim Oilfield Company,Korla 841000,China;Fourth Gas Production Plant,PetroChina Changqing Oilfield Company,Erdos 017300,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2023年第7期79-83,共5页
Technology of Water Treatment
基金
国家自然科学基金项目(51504192)
陕西省自然科学基础研究计划项目(2016JQ5102)。
关键词
C/N
油田污水
小球藻
好氧菌
C/N
oilfield wastewater
chlorella vulgaris
aerobic bacteria
