某市10万m3d污水处理厂工艺设计计算说明书(氧化沟工艺).doc

PAGEIV 某市10万m3/d污水处理厂工艺设计 计算说明书  摘 要：城市污水是通过下水管道收集到的所有排水，是排入下水管道系统的各种生活污水、工业废水和城市降雨径流的混合水。如果处理不好的话会造成会对城市周边水体带来很大危害，影响城市居民饮水质量，对工农业生产以及水生生物也有极大的危害。本设计要求对污水进行处理，要求出水水质：CODCr≤50mg/L，BOD5≤10mg/L，SS≤10mg/L，氨氮≤5mg/L，TP≤0.5mg/L达到国家一级水处理标准。经过分析，根据出水水质和平均水量的要求故选择卡鲁赛尔氧化沟工艺，该工艺能有效处理COD、BOD、氮磷等。工艺流程为：城市污水→粗格栅→提升泵房→细格栅→沉砂池→厌氧池→氧化沟→二沉池→砂滤器→接触消毒池→出水。 本设计说明书主要介绍10万m3/d城市污水处理厂工艺的设计概况、工艺原理和各个主体构筑物的设计计算以及设备选择。 关键词：城市污水；污水处理；氧化沟处理工艺；工艺概况 100000m3/d Suzhou city sewage treatment plant process d Abstract:Urban sewage is collected through pipes all drainage, is discharged into water pipe system of sewage, industrial wastewater and the mixed water of urban rainfall runoff.If processes is not good will cause the water to cities brings great harm, affect urban residents drinking water quality, for industrial and agricultural production and aquatic organisms also have great harm.This design demands for wastewater treatment, water quality, CODcr 50 mg/L, or less BOD5 10 mg/L, or less SS 10 mg/L, or less ammonia nitrogen or less 5 mg/L, TP 0.5 mg/L or less to reach national level water treatment standard.Through analysis, according to the requirement of the effluent water quality and the average water so choose carew self oxidation ditch process, this process can effectively deal with COD, BOD, nitrogen and phosphorus, etc.Technological process is: the urban sewage and coarse screen to improve pump room, fine screen to the grit chamber - anaerobic tank - oxidation ditch, the second pond - sand filter - contact disinfection pool - water. This design manual mainly introduces 100000 m3/ d city sewage treatment plant process involving situation, process pr Keywords: urban sewage; sewage treatment; oxidation ditch treatment technology; process overview 12664 1绪论 1 8905 1.1城市污水及其危害性 1 31464 1.2污水处理必要性 1 3916 2.设计概况 1 19590 2.1设计背景 1 25113 2.2水质指标要求 1 17480 2.3工艺的比较和确定 2 19590 2.3.1常用污水处理工艺介绍 2 19590 2.3.2工艺的比较和确定 3 21749 2.4工艺流程图 4 13294 2.5预计处理效果 4 16987 3.各构筑物设计计算 5 3613 3.1粗