摘要
以一种新型可降解材料PLA/PHBV共混物为碳源和生物膜载体,对硝酸盐污染水进行反硝化脱氮。在温度为(29±1)℃,pH为(7.5±0.2)条件下,利用响应曲面法考察了进水硝态氮浓度、水力停留时间(HRT)和出水硝态氮浓度之间的关系,建立了以出水硝态氮浓度为响应值的二次多项式回归模型,模型预测值与实验值能很好吻合。方差分析结果表明,进水硝态氮浓度和HRT及其交互作用对响应值均具有显著性影响(P<0.01)。
PLA/PHBV blend, a new kind of biodegradable polymer, was used as carbon source and biofilm support to remove nitrate from contaminated water. The relationship of the effluent and influent nitrate-nitro- gen concentrations and hydraulic retention time （HRT） was quantitatively investigated using response surface methodology at （29 ± 1 ） ℃ and pH （7.5 ±0.2）, A polynomial regression model was developed with the effluent nitrate-nitrogen concentration as response value. The calculated values of the model agreed well with the experimental data. Influent nitrate-nitrogen concentration, HRT and their interaction had significant impacts on the response value by analysis of variance （ P 〈0. 01 ）.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第2期489-493,共5页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(21077014)
现代农业产业技术体系北京市创新团队专项资金
北京市农林科学院面上项目(2010A010)
关键词
固体碳源
硝酸盐
反硝化
响应曲面法
solid carbon source
nitrate
denitrification
response surface methodology
