摘要本设计为屠宰厂生产废水处理设计,设计过程为初步设计。屠宰废水来自于家禽、猪和牛的屠宰加工场,含有油脂、蛋白质、血污和其他有机物,若未经处理排入河流和小溪可能对环境带来危害。该屠宰废水处理厂的处理水量为1000m3/d,不考虑远期发展。原污水中各项指标:BOD5=800-1200mg/L,CODCr=1500-2000mg/L,SS=800-1500mg/L,动植物油=40-60mg/L,NH3-N=100-120mg/L,pH=6.0-9.0。屠宰废水属于易生物降解废水,可采用两级生物处理使出水达标。预处理主要采用物理处理,包括格栅、调节池、隔油沉淀池和气浮池,主要用来去除水中的悬浮颗粒、泥沙和油污,并使处理的水质均匀,水量稳定。二级处理处理主要采用生物法,包括厌氧生物处理法中的UASB法和好氧生物处理法中的SBR法,可以有效去除水中的有机物,最后出水达到国家的有关排放标准(GB13457-1992)即:CODCr≤80mg/L,BOD5≤30mg/L,SS≤60mg/L,NH3-N≤15mg/L,pH=6.0-8.5。处理后的出水排进厂区附近的天然河道。本工程总投资为305.2万元,处理每吨水成本为2.97元。本文介绍了该工艺的特点,并有相关的屠宰废水的工艺设计过程。关键词:屠宰废水;工艺设计;UASB;SBRYongfuslaughterwastewatertreatmentplantdesignforaslaughterhouseinGuangxiStudent:ZHANGYuan-yuanTeacher:ZHANGXue-hongAbstract:Thistopicdesignisaslaughterhousewastewatertreatmentplant.Thedegreeofthedesignisinapreliminaryphase.Effluentsfromindustrialpoultry,porcine,orbovineslaughterhousescontaininglipids,proteins,blood,andotherorganicmaterial,mightcauseenvironmentaldamageifdischargeduntreatedinriversandcreeks.Thewaterwhichneedtobetreatintheslaughterhousewastewatertreatmentplantis1000m3d,regardlessoffuturedevelopment.Thevarioustargetintherawwastewateris:BOD5=800-1200mg/L,CODCr=1500-2000mg/L,SS=800-1500mg/L,oilandgrease=40-60mg/L,NH3-N=100-120mg/L,pH=6.0-9.0.Thequalityoftheprocessingwaterbelongstothewastewatertheteasytobebiologydegrade.Usingtwolevelsofbiologytreatmentcouldmadethewastewaterachievetheeffluentstandard.Pretreatmentmailyusethephysicalmethod,includinggrilling,regulatingreservoir,greasetrapsettlingtankandtheflotationtank,itspurposeistoremovelargesuapendedparticulatematterandtheoilsubstance.Thesecondarytreatmentusesthebiologymethods,consistsofUASBofanaerobicoxygenbiologymethodsandtheSBRoftheaerobicoxygenbiologymethods,whichcouldremovemostoftheorganics.Atlast,thewaterleakageachievedthecountryrelateddischargesstandardswhichareCODCr≤80mg/L,BOD5≤30mg/L,SS≤60mg/L,NH3-N≤15mg/L,pH=6.0-8.5.Treatedeffluentisdischargedintothenaturalrivernearthefactory.Thetotalunvestmentofthisprojectis3.052millionyuananditcost2.97yuantotreatpertonofwater.Thisarticleintroducesthecharacteristicofthiscraftandsuppliesthecorrelatedprocessoftheslaughterhousewastewatertreatmentplant.Keywords:slaughterwastewater;technologicaldesign;UASB;SBR目次摘要................................................................IAbstract...............................................................II1前言.............................................................12工程设计背景..............................................22.1设计任务..............................................22.2设计资料..............................................22.3设计依据..............................................33废水处理工艺方案比选及确定.....................43.1常用工艺类型的介绍............................43.1.1厌氧工艺.........................................43.1.2好氧工艺.........................................63.2工艺类型的选择....................................93.3工艺方案确定....