摘要：随着我国对污水处理力度的增强，城市污水厂在国内发展迅速且数目不断增加，污水处理效果也越来越受到群众的关注。本文介绍了常州市江边污水处理厂的概况，评价了其工艺流程的主要特点。经过对该污水处理厂2014年运行效果的调研，文中对该污水厂的进出水水质指标进行了分析和评价。结果表明，该污水厂的改良型AAO工艺对BOD5、COD、SS、NH3-N、TP的年去除率平均达到98.2%、84.6%、95.2%、96.9%、92.3%，各项出水水质都达到我国《城镇污水处理厂污染物排放标准》（GB18918-2002）一级A标准。并对该厂改良型AAO工艺长期运行过程中出现的污泥上浮问题、深度处理投加药剂量问题、泡沫问题、中水回用问题进行机理分析并给出相应解决措施。本文对其他具备相同或相近的污水处理厂工艺的设计、运行及控制具有一定的参考价值。40416
毕业论文关键词：污水处理厂；改良型AAO工艺；水质指标；运行效果
A research on the altered AAO process in wastewater treatment
——Taking Jiangbian Wastewater Treatment Plant as an example
Abstract: With the increase of the intensity of the national sewage treatment, the number of city wastewater treatment plants spreads across the country quickly. The wastewater treatment effect is paid attention to the mass widely. This paper introduces a Changzhou wastewater treatment plant process. Through the investigation of the wastewater treatment plant in 2014. It analyses the water quality indexes of the wastewater treatment plant. The result shows that, the average removal rate of the wastewater treatment plant about BOD5, COD, SS, NH3-N, TP reached 98.2%, 84.6%, 95.2%, 96.9%, 92.3%. The effluent quality is better than China's "Urban Sewage Treatment Plant Pollutant Discharge Standard" (GB18918-2002). Because of the long-term operation, this plant appears many problems. Such as sludge floating problem, bubble problem, the depth of treatment for dosing dose and water reuse problem. According to these problems, the paper offers some solving measures. With other same or similar wastewater treatment plants, it has certain reference value to other design of sewage treatment plants.
Keywords: sewage treatment plant; the altered AAO process; water quality index; operation effect
目录
1 引言 1
1.1 研究背景和内容 1
1.2 改良型AAO工艺 2
1.2.1 改良型AAO工艺概述 2
1.2.2 改良型AAO工艺与传统AAO工艺的区别 2
2 常州市某污水处理厂概况及其工艺评价 3
2.1 污水处理厂概况 3
2.2 工艺评价 3
2.2.1 一级处理的特点 3
2.2.2 二级处理的特点 4
2.2.3 三级处理的特点 4
2.2.4 污泥处理的特点 4
2.3 进出水水质 4
3 污水处理厂的运行效果 5
3.1改良型 AAO工艺对BOD5的处理效果 5
3.2 改良型AAO工艺对COD的处理效果 6
3.3 改良型AAO工艺对SS的处理效果 7
3.4改良型 AAO工艺对NH3-N的处理效果 8
3.5 改良型AAO工艺对TP的处理效果 9
4 长期运行过程中遇到的问题及解决措施 10
4.1 污泥上浮问题 10
4.1.1污泥上浮现象及原因 10
4.1.2解决措施 10
4.2 深度处理投加药剂问题及解决方法 11
4.3 泡沫问题 12 污水处理厂改良型AAO工艺的运行效果调研:http://www.youerw.com/huaxue/lunwen_38719.html