给水排水毕业设计计算书---城市污水处理厂初步设计.docVIP

摘要 本次设计为湖北省随州市城市污水处理厂初步设计，由于进水N、P含量相对较低，且经深度处理后去除率又不是很高，根据处理程度的要求，污水厂主要采用如下处理构筑物：格栅、污水泵房、沉砂池、Carrousel2000型氧化沟、二沉池、接触消毒池、浓缩池、贮泥池、污泥脱水泵房、计量堰等构筑物。污水处理采用的是新型工艺氧化沟法以代替传统曝气系统；该系统具有高效节能的特点，耐冲击负荷好、出水水质好，可同时脱氮除磷，无需再单设脱氮除磷设施即可满足深度处理出水要求，且具有明显溶解氧浓度梯度，整体体积功率密度低，处理流程简便，而且可不设初沉池和污泥消化池，降低成本，完全符合本设计要求。 关键词: 污水处理 氧化沟 处理构筑物 设计参数 运行参数 Abstract This design is the preliminary design of urban sewage treatment plants in Suizhou City, due to water N, P content is relatively low, and after the removal by advanced treatment are not very high, according to treatment level requirements, wastewater treatment plant mainly processing structures as follows: grid, sewage pumping stations, grit chamber, Carrousel2000 type oxidation ditch, secondary sedimentation tank, contact disinfection tank, concentration tank, storage basins, sludge dewatering pump, measuring weirs and other structures. Sewage treatment process using the new oxidation ditch to replace the traditional aeration systems; the system is energy efficient features, good resistance to shock loading, water quality, and can also removal nitrogen and phosphorus, do not need to be established facilities for removal nitrogen and phosphorus can also meet the depth of the treated effluent demand, and have significantly dissolved oxygen concentration gradient, the overall volume of low power density, easy processing, and can not set the primary sedimentation tank and sludge digestion tank, thus reduce costs, fully consistent with the design requirements. Key words: sewage treatment oxidation ditch treatment tank design parameters operating parameters 设计计算说明书 第一章 污水处理构筑物设计计算 一、泵前粗格栅 1、设计参数 生活排水量：万m3/d 职工生活污水：0.35万m3/d 工业生活污水：0.8万m3/d 市政及公共建筑排水量：0.52万m3/d 污水厂总设计流量：万m3/d 最高日平均时设计秒流量：Q平均=KDQ=万m3/d=0.588m3/d 最高日最高时设计秒流量Qmax=Kh Q平均=K总Q平均=万m3/d =0.653 m3/s 栅前流速V1=0.7m/s， 过栅流速V2=0.9m/s 栅条宽度S=0.01m ，格栅间隙e=20mm 栅前部分长度0.5m 格栅后长度1.0m；格栅倾角 单位栅渣量W1=