ab法污水处理工艺设计计算.doc
32页1、 毕业论文目录摘要 1前言 21.设计原始资料 22.工艺比较及选择 22.1 污水特征 22.2 工艺比较 3 2.2.1 普通活性污泥工艺 3 2.2.2 氧化沟工艺 52.2.3 SBR工艺 42.2.4 AB法工艺 42.3 工艺选择 53.设计计算 6 3.1 污水处理程度的确定 6 3.2 污水处理工艺流程的选择 6 3.3 各处理单元设计计算 7 3.3.1 格栅 7 3.3.2 曝气沉砂池 8 3.3.3 AB工艺参数 9 3.3.4 A段曝气池 11 3.3.5 B段曝气池 14 3.3.6 A段中沉池 17 3.3.7 B段终沉池 17 3.3.8 污泥浓缩池 18 3.3.9 贮泥池 19 3.3.10 污泥消化池 20 3.3.11 污泥脱水机 25 3.4 附属建筑物 27 3.5 处理厂规划 27 3.5.1 平面布置 27 3.5.2 高程布置 27 3.6 污水提升泵选择 294.结论 30参考文献 31致谢 32AB法污水处理工艺设计计算摘要:通过分析污水特征和工艺比较,污水处理厂采用AB法污水处理工艺。AB属超高负荷活性污泥法,其设计特点一般为不设初
2、沉池,A段和B段的回流系统分开。A段和B段负荷在极为悬殊的情况下运行。A段污泥负荷高、污泥龄短、产泥量多,B段污泥负荷低、污泥龄长、产泥量较少。两段的沉淀池表面负荷差异也较大。AB法产泥量较大,需设污泥消化工艺,解决污泥处理和出路问题。此外,AB法污水处理厂中的分期建设可缓解资金不足问题,同时使污水得到较大程度处理。本设计中选用的各参数数据参考现运行AB法污水厂的经验数据。关键词 : AB法,负荷,设计,参数The design and calculation of AB wastewater treatment technology Abstract:By means of analyzing the sewage characteristic and comparing treatment technologies, this wastewater treatment plant adopts the AB process. AB process belongs to the ultrahigh load activated sludge process. The design f
3、eature of AB process is that the primary sedimentation tank is generally unnecessary, and the refluence systems of section A and section B are separated. The load of Section A and section B are extremely different. Section A has high sludge load, short sludge age and more sludge production, while section B has low sludge load, long sludge age and less sludge production. Difference in the surface load of precipitating tanks in the two sections is noticeable. AB processs sludge yield rate is relat
4、ively high, so it is necessary to set up sludge digest tanks to deal with excess sludge problem. In addition, Phased construction in AB process wastewater treatment plant can alleviate the fund deficiency problem, and make it possible for the sewage to be treated by a high degree. All parameter and data used in this design is selected from AB process wastewater treatment plants that having been operated successfully.Keyword: AB process, load, design, parameter前言在当今世界,城市的建设正在高速发展,随着城市规模的不断扩大和人口的增
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