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高浓度废水厌氧处理技术

时间:2019-01-08 17:09来源:毕业论文
采用了高效厌氧反应器UASB对废水进行处理,从催化剂的量,ph,水力停留时间,温度等方面进行实验。得到最适温度为32摄氏度,最适水力停留时间为6小时,最适pH为4等

摘要:近年来,我国的工业废水处理一直处于较低下的水平,废水排放量远远大于对水资源的需求量,水体中存在的微量持久性有机污染物对人类水体中存在的微量持久性有机污染物对人类正常生命活动构成了严重威胁。废水厌氧处理作为一种有竞争力的、经济的、日益成熟的生物处理工艺,是一种集环境保护、能源回收和生态良性循环于一体的技术,具有良好的社会、经济、环境效益,其研究和应用日益受到重视,工程化推广应用极其广泛。本文主要采用了高效厌氧反应器UASB对废水进行处理,从催化剂的量,ph,水力停留时间,温度等方面进行实验。得到最适温度为32摄氏度,最适水力停留时间为6小时,最适pH为4等。实验结果表明,在适宜的条件下,COD的去除率可以达到80%以上。本次实验具有实际意义,实验中所得的结论可工业废水中污染物的处理实践和工程提供技术参考。32424
毕业论文关键词:工业废水;厌氧处理;COD;高效厌氧反应器 
High concentration anaerobic wastewater treatment technology
Abstract:In recent years, China's industrial wastewater treatment has been at the next lower level, wastewater emissions far greater than the demand for water. The presence of trace water POPs pose a serious threat to human normal life activities. Further research and application have been attached to anaerobic wastewater treatment process widely, which is an economical, competitive and mature biological technique. Moreover,it can simultaneously contribute t o environmental protection, resource reuse and optimal ecological recycle leading to favorable social, economic and environmental benefit. Its engineering application is very wide. This paper uses the UASB which as a high efficiency anaerobic reactor for wastewater treatment, the amount of catalyst from pH,hydraulic residence time, temperature and other aspects of the experiment. Obtain optimum temperature of 32 degrees Celsius, the optimum hydraulic retention time of 6 hours, optimum pH 4 and so on. The experimental result show that,under appropriate conditions,the removal rate of COD can reach more than 80%. Of practical significance in this experiment, the experiment can be concluded pollutants in industrial wastewater treatment practices and provide technical reference works.
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Keywords:  industrial wastewater; anaerobic treatment; COD;high efficiency anaerobic reactor
目录
1概述    1
2厌氧生物处理原理与过程    1
2.1废水厌氧生物处理的生物相    2
2.1.1产酸菌    2
2.1.2产甲烷菌    3
2.1.3厌氧微生物群体间的关系    4
2.2废水厌氧生物处理的净化反应原理    5
2.2.1两阶段理论    5
2.2.2三阶段理论    5
2.3厌氧废水处理的影响因素    6
2.3.1温度    6
2.3.2 pH    7
2.3.3营养物与微量元素    8
2.3.4有毒物质    8
2.3.5氧化还原电位    8
2.4厌氧处理工艺的特点    8
3废水厌氧生物处理技术的产生与发展    9
3.1第一代厌氧反应器    9
3.2第二代厌氧反应器    10
3.3第三代厌氧反应器    10
4 UASB反应器    10
4.1 UASB反应器的基本构造    11
4.1.1污泥床    11
4.1.2污泥悬浮层    11
4.1.3沉降区    11
4.1.4三相分离器    12
4.2 UASB反应器主要有两种形式    12
4.2.1开敞式UASB反应器    12 高浓度废水厌氧处理技术:http://www.lwfree.cn/huaxue/20190108/28992.html
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