摘要
采用室内培养方法,对乳酸杆菌LH就养殖废水、饲料的降解作用进行了研究。在温度为15～30℃,乳酸杆菌浓度为103～106cfu·mL-1,底物浓度为50～150mg·L-1条件下,测定废水的pH、NH3-N、NO2-N、NO3-N、PO4-P和COD。结果表明,与对照组相比,各个实验组养殖废水和饲料的NO2-N、NO3-N、PO4-P显著降低,而NH3-N则显著上升,COD浓度没有明显变化。不同温度、菌接种量和底物浓度下,乳酸杆菌LH对养殖废水和饲料NO2-N、NH3-N、PO4-P、NO3-N的降解率存在显著差异。这说明,乳酸杆菌LH能有效地降低养殖废水和饲料中的NO2-N、PO4-P、NO3-N,而使NH3-N的浓度升高,对COD无明显作用。实际应用上,应把乳酸杆菌和芽孢杆菌、光合细菌等有益菌联用,以发挥各个菌株的不同功能。
The degradation of NH3-N, NO2-N, NO3-N, PO4-P and COD in aquaculture wastewater and feedstuff by Lactobacillus was studied. The factors such as temperature （15-30℃）, the concentration of Lactobacillus （10^3～10^6 cfu·mL^-l） and feedstuff （50～150mg·mL^-1） were considered. The results showed that compared with control groups, NO2-N, NO3-N and PO4-P in treatment groups reduced significantly while NH3-N increased. The COD of all groups had no remarkable changes. There were significant differences among different treatments in the degradation rates of NH3-N, NO2-N, NO3-N and PO4-P in aquaculture wastewater and feedstuff. Lactobacillus exhibited significant effects on the removal of NH3-N, NO2-N, NO3-N and PO4-P in aquaculture wastewater and feedstuff, but made the concentration of NH3-N increase, while exhibited no obvious effects on COD. The application of Lactobacillus in aquaculture should associate other probiotics such as bacillus and photosynthetic bacteria to display their different functions.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2008年第1期342-349,共8页
Journal of Agro-Environment Science
基金
国家“十五”科技攻关项目(2004BA526B0202)
广东省重大科技专项(A30501001)
重大科技兴渔项目(B200201A01)
“十一五”国家支撑计划(2006BAD09A11
2006BAD09A07)
关键词
乳酸杆菌
水产养殖
污染物
降解
lactobacillus
aquaculture
contaminant
degradation
