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设计总说明：随着国家经济的高速发展，制药厂规模的逐步增大，水污染问题成为大众关注的焦点。本设计是根据设计任务书中的原始数据和资料，根据现场的污水水质情况和现场的地形等相关资料，完成设计和计算，确定污水处理流程，计算各污水处理构筑物的尺寸，布置污水处理站总平面图和高程图以及部分构筑物的平剖面图。这次的设计是我们利用所学到的水污染控制的相关知识，运用污水处理系统地进行方案的比较、优化，和每个构筑物结构的设计与参数计算。36024
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该污水处理厂设计污水流量为Q=5000m³/d，产生的制药污水的水质条件为：COD=11000mg/L；BOD5=4000mg/L左右；SS=2000mg/L；NH3-N=100mg/L；SO42-=1000，pH=6.5-8。污水经处理后的出水水质要求为：COD=100mg/L；BOD5=20mg/L左右；SS=70mg/L；NH3-N=15mg/L；pH=6-9；SO42-=1。本设计的特点：有大量的有机污染物，BOD/COD =0.36，污水的可生化性较好，其主要污染物SS、BOD5、COD等值都较高，该水质属高有机物污水。
制药废水先是经过中格栅去除大杂质后进入提升泵房，用污水泵将废水进行提升后进入依次进入细格栅和沉砂池，随后进入调节池进行水质水量的调节，调节池的pH值在6-9之间，调节池出来的水进入絮凝池，接着进入AO池来降低有机物浓度，反应池的剩余污泥有污泥提升泵提升到污泥浓缩池内被浓缩，浓缩后进入污泥脱水机房，进一步降低污泥的含水率，实现污泥的减量化，污泥脱水后，形成泥饼，装车外运处置。沉砂池选择平流式，其效果好，耐冲击负荷，适应温度变化。工作稳定，构造简单，易于施工，便于管理。消毒池选择液氯消毒池，设计和运行管理方便，运行成本低。这样的设计能去除高浓度的BOD5和COD。其中，在絮凝池、缺氧池和好氧池的去除率最大。
该处理工艺具有结构紧凑、简洁，运用控制灵活，抗冲击负荷，污泥量小，自动化程度高，操作文护简单，工人的劳动强度低等特点，实践表明该工艺处理性能可靠，投资少，运行管理简单的特点。为制药废水处理提供了一条可行途径，具有良好的经济效益、环境效益和社会效益。
污水厂布局合理，重点突出，占地面积小，环境优美，与周围环境及建筑风格相协调。
毕业论文关键字： 水污染；污水生化处理；A/O工艺；制药废水
Process design of the Pharmaceutical Wastewater Treatment
Design General Information: With the rapid development of national economy, gradually increase the size of the pharmaceutical, water pollution issue has become the focus of public attention. This design is based on the design task book of original data and information, according to the site's sewage water quality and on-site topography and other related information, to complete the design and calculations to determine the sewage treatment process, calculate the size of the sewage treatment structures, arrangements sewage treatment station master plan and elevation view and a sectional view of the flat part of the structure. This design is that we use the knowledge learned in water pollution control, the comparison of the sewage treatment system to carry out the program, optimization, and design parameters for each structure.
The sewage treatment plant design sewage flow is Q = 5000m³/d, water conditions sewage generated is : BOD5 = 4000mg / L ;COD = 11000mg/ L; SS = 2000mg / L; NH3-N = 100mg / L; SO42-=1000;pH=6.5-8.Water quality requirements for the treated effluent:COD=100mg/L; BOD5=20mg/L;SS=70mg/L;NH3-N=15mg/L;SO42-=1000;pH=6-9. Wastewater biodegradability is better, the main pollutant SS, BOD5, COD equivalence are high, which is a high quality organic sewage.
After the first pass in the pharmaceutical wastewater to remove large impurities into the grid after a pumping station with a sewage lift pump wastewater into the turn into the fine grid and grit chamber, and then into the conditioning tank for water quality and quantity is adjusted to regulate the pH value of the pool between 6-9, regulation pool out of the water into the flocculation tank, then into the pool to reduce the concentration of organic matter AO, sludge reaction tank sludge lift pump lift to sludge thickening pool is concentrated, and concentrated into the sludge dehydration engine room to further reduce the moisture content of the sludge to achieve sludge reduction, sludge dewatering, sludge cake form, loading Sinotrans disposal. Select advection grit chamber, good effect, resistance to shock loading, adjust to temperature changes. Stable, simple structure, easy to construct, easy to manage. Chlorine disinfectant pool disinfection pool selection, facilitate the design and operation management, low running costs. This design can remove high concentrations of BOD5 and COD. Where in removal flocculation tank, anoxic and aerobic tank maximum.
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