摘要
为解决污水处理中碳源不足的问题,采用稻草、玉米秸秆在25、35、55℃下厌氧发酵,以COD/TN分别为4、6、8添加发酵液作外加碳源,探讨其反硝化脱氮效果。结果表明:稻草、玉米秸秆发酵的最佳温度均为35℃;稻草、玉米秸秆发酵液的碳源投加量均在COD/TN为6时脱氮率最佳,分别为80.1%、97.3%。综上所述,秸秆发酵液是一种有潜能的优质碳源。
In order to solve the problem of insufficient carbon source in sewage treatment,anaerobic fermentation of rice straw and corn stalk were carried out at 25,35,55 ℃ and the denitrification efficiency in water was investigated by adding the fermentation liquid as an external carbon source according to COD/TN ratios of 4,6,8 respectively. The results showed that the optimum fermentation temperature of rice straw and corn stalk were both at 35 ℃. The optimum amounts of the two straws fermentation liquid added were both at COD/TN of 6. The removal rates of nitrate nitrogen for rice straw and corn stalk were 80.1% and 97.3%,respectively. In summary,the fermentation liquid of straws is an excellent external carbon source candidate.
作者
黄胡林
付新梅
周正
Huang Hulin;Fu Xinmei;Zhou Zheng(School of Environment and Resources,Southwest University of Science and Technology,Mianyang 621010,China;Sichuan International Science and Technology Cooperation Base of Low-cost Wastewater Treatment Technology,Mianyang 621010,China;Key Laboratory of Energy Microbiology,Biogas Scientific Research Institute of the Ministry of Agriculture,Chengdu 610041,China)
出处
《工业水处理》
CAS
CSCD
北大核心
2019年第5期42-45,共4页
Industrial Water Treatment
基金
国家自然科学基金项目(21777143)
四川省人社厅留学回国人员科技活动项目资助(14zd3128)
关键词
外加碳源
农业秸秆
发酵液
反硝化
external carbon source
agricultural straw
fermentation liquid
denitrification
