优势芽孢杆菌菌种在畜禽养殖废水处理中筛选研究

优势芽孢杆菌菌种在畜禽养殖废水处理中筛选研究(7100字)
摘  要：本试验利用芽孢杆菌处理畜禽养殖废水，对不同时间段养殖废水中各项水质因子pH、DO、NH4+-N、COD进行测定分析。结果表明，经投加芽孢杆菌菌液处理的养殖废水水质均优于对照组，芽孢杆菌可以降低畜禽养殖废水的COD和NH4+-N，COD的去除率为62.99%，NH4+-N的去除率为54.75%。投加菌液后对养殖废水的pH值影响不明显。说明能够利用芽孢杆菌处理畜禽养殖废水。
关键词：芽孢杆菌；养殖废水；降解效果
 
Advantages of Bacillus bacteria in livestock wastewater treatment screening study
Abstract：This experiment took Bacillus to deal with livestock waste water, measured and analyzed the quality factors of livestock waste water on different time periods, such as pH, DO, NH4+-N and COD. The results showed that after dosing the bacteria of Bacillus into livestock waste water, the water quality is better than the control group, Bacillus can reduce the COD and NH4+-N of the livestock wastewater, the COD removal efficiency of 62.99%, the NH4+-N removal efficiency of 54.75%. The addition of Bacillus has no obvious effect on pH of water quality. That can use bacillus process livestock waste water.
Key words：Bacillus；Aquaculture wastewater；Degradation characteristics

目　　录
摘要    1
关键词    1
1　前言    2
1.1　畜禽养殖污染现状    2
1.2　养殖废水处理技术    2
1.2.1　物理方法    2
1.2.2　化学方法    3
1.2.3　生物方法    3
1.3　微生物在废水处理上的应用    4
2　实验材料    4
2.1　实验仪器    4
2.2　实验试剂    4
3　实验方法    5
3.1　实验设计    5
3.1.1　水样的采集与预处理    5
3.1.2　芽孢杆菌的分离、纯化    5
3.1.3　芽孢杆菌增殖培养和计数    5
3.1.4　养殖废水处理效果    5
3.2　测定方法    5
4　结果与分析    6
4.1　试验废水水质    6
4.2　水样pH值的变化    6
4.3　水样DO值的变化    7
4.4　水样NH4+-N的变化    8
4.5　水样COD的变化    8
5　结论    9
参考文献    10
致谢    11