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This design task is a small AAO in sewage treatment process design, the design flow of 500m ³, according to the sewage water, combined with the national requirements on water quality of sewage, effluent water quality to reach the 2002 GB8978 of B standard. Process design is used in the AAO method. This design based on original data given by supervisor, calculation and scheme comparison of related, choose the AAO process. And residential treatment station related structures for the calculation and design. At the same time on the relevant drawings and program notes. Compared with other processes, calculation processing efficiency, combined with the relevant parameters and standard, select this process of sewage treatment, in terms of costs were also calculated, hoping to be able to meet the affordability of the residents, while the treatment plant green made the first turn of the layout, so that the impact on the surrounding environment to reduce to the lowest.
In this design is mainly based on the original data of the teacher's task book, access to include "outdoor drainage design standards" (GB50014-2006) official version, "water drawing standards" (GBT50106-2001), "urban sewage treatment plant pollutant discharge standard" (GB18918-2002) and other related standards, the effluent treatment rate in detail calculation, selection of the best treatment scheme of the. The design of the query design principles are as follows: (1) implement local about environmental protection policy, make the design in accordance with local rules and regulations, standardize. The water after sewage treatment emissions meet the national discharge standard. (2) the use of economic and reliable new processes, new equipment and new materials. (3) the combination of distance, overall planning, rational distribution. (4) structure design and equipment selection should be fully taken into account has greater flexibility in the production run, adaptability and resistance to shock load capacity. The use of automation control technology advanced, reliable, and improve the sewage plant management level, ensure the sewage and water treatment process is run in the best condition.
Keywords: AAO; sewage treatment; water quality; the sludge bucket
目录
1.引言 1
1.1污水处理现状及小区概况 1
1.1.1污水处理现状及选题意义1
1.1.2小区概况2
1.2设计原则、标准和规范3
1.2.1设计标准和依据3
1.2.2设计原则3
1.3设计范围4
2.污水处理站工艺选择4
2.1污水处理目标和任务 4
2.1.1污水处理的目标4
2.1.2污水处理的任务及出水要求4
2.2处理工艺的比较和选择5
2.2.1处理工艺的比较5
2.2.2处理工艺的选择6
3.工艺设计说明7
3.1格栅7
3.2提升泵房8
2.3沉砂池8
3.4初沉池8
3.5 AAO生物反应池9
3.6曝气系统9
3.7二沉池9
3.8接触池和加氯间10
3.9污泥浓缩池10
3.10脱水机房10
4.主要构筑物设计计算11
4.1格栅11
4.1.1设计参数11
4.1.2设计计算11
4.2提升泵房14
4.2.1设计参数14
4.2.2设计计算14
4.3沉砂池*14
4.3.1设计参数14
4.3.2设计计算14
4.4初沉池15
4.4.1设计参数15
4.4.2设计计算15
4.5 AAO生物反应池17
4.5.1设计参数17
4.5.2设计计算17
4.6曝气系统20
4.6.1设计参数20
4.6.2设计计算21
4.7二沉池23
4.7.1设计参数24
4.7.2设计计算24
4.8接触池和加氯间27
4.8.1设计参数27