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Design Flow
Design Basis
(1) "Water Supply and Drainage drawing standard" number GB / T50106-2001;
(2) "outdoor drainage design specifications" number GB50014-2006;
(3) "Textile Industry pollution discharge standard" number GB4287-2008.
(4) "Water Pollution Control Engineering" GAO Ting-yao Higher Education Press, 1999
Determine the sewage treatment process
Printing and dyeing wastewater treatment process should be considered to determine the quality of sewage, water features, sewage contamination situation, biodegradability, sewage treatment degree (ie, water quality), the treated wastewater emissions. Typical examples of reference works, by comparison options determine the sewage treatment process, according to the treated water discharge destination and national or local discharge standards established by various types of wastewater to determine the extent of contamination and treatment should be removed.
The amount of waste generated in a cotton dyeing factory company is 1200m3 / d, sewage main pollution indicators: CODcr, BOD5, SS, color and so on. Water quality according to the following considerations: CODcr: 700mg / L, BOD5: 300mg / L, SS: 200mg / L, pH: 6 ~ 9, chroma 350 (times). Initial data for discharges above design company, the company needs to design requirements are as follows: wastewater treatment technology and economics are feasible, the treated wastewater discharged into the nearby river, the water quality execution "Textile dyeing industrial wastewater discharge standard" ( GB4287-2008) Table 2 straight row-level standards, specifically: CODcr: ≤80mg / L, BOD5: ≤20mg / L, SS: ≤50mg / L, pH: 6 ~ 9, chroma 50 (times). Where the indicators were lower, a single approach can not meet the standard, so the use of anaerobic an aerobic process the wastewater. Taking into account the cost of processing factors into account construction investment, operation and management, decided to materialization of a biochemical method for wastewater treatment. In order to improve the biodegradability of the wastewater before aerobic tank to increase anaerobic fluidized bed. Specific process is as follows: Sewage - artificial grill - adjust sedimentation tank - fluidized bed - contact oxidation pond - secondary sedimentation tank - sand filter - clean water tank - discharge
Design requirements
1) for each wastewater treatment process to compare and choose, determine the process of wastewater treatment program.
2) to determine the sewage treatment process, and conduct process description.
3) for each device selection, and do a simple explanation. Sewage treatment plant design and calculation of various structures.
4) Draw dyeing wastewater treatment plant total floorplan.
5) Draw dyeing wastewater treatment plant overall process flow diagram.
6) drawing showing the main structures construction process.
7) complete the design specification and calculations.
The design of the main design drawings:
8) sewage treatment plant total floorplan
9) processing flow chart
10) The main monomer structures plane, profile
目 录
1 引 言 1
2 设计任务书 2
2.1 主体工艺的比选 2
2.1.1 生物处理方法的比选 2
2.1.2 处理整体工艺概况 3
3 污水处理构筑物的说明 5
3.1 格栅的设计 5
3.1.1 设计参数 5
3.1.2 选取结果 5
3.2 调节沉淀池的设计 5
3.2.1 设计依据 5
3.2.2 调节池设计结果 6
3.3 厌氧流化床的设计 6
3.3.1 设计依据 6
3.3.2 厌氧流化床说明 6
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