乳酸杆菌(Lactobacillus spp.)LH对水产养殖污染物的降解研究  

The Degradation of Aquiculture Contaminants by LH (Lactobacillus spp.)

作　　者：李卓佳[1] 周海平[1,2] 杨莺莺[1] 洪敏娜[1] 梁晓华[1] 

机构地区：[1]中国水产科学研究院南海水产研究所 [2]广东海洋大学,广东湛江524000

出　　处：《农业环境科学学报》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)

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.

关 键 词：乳酸杆菌 水产养殖 污染物 降解 

分 类 号：X172[环境科学与工程—环境科学]