养猪场污水UASBSBR工艺处理工程设计

中文摘要i摘要养殖业污水中富含大量营养物质，若不经处理直接外排入水体，往往会造成水体富营养化。养猪废水的特点是排放集中、水力冲击负荷强、有机质浓度高、水解酸化快、沉淀性能好。本设计采用UASB+SBR处理工艺，该工艺优点在于艺对有机物、悬浮物、氮和总磷均有很好的去除效果。废水首先进入调节池,去除大部分悬浮物和少量有机物，出水流入集水井，通过泵输送到UASB反应器，大部分有机物被降解，并产生沼气。UASB反应器出水进入SBR反应器进行后续处理，部分有机物和大部分NH3-N被降解。由于SBR反应器出水SS、COD还较高，影响出水水质，因此通过氧化塘作进一步处理，以满足达标排放要求。废水经处理后达到《畜禽养殖业污染物排放标准》（GB18596-2001）排放标准，本设计采用的工艺可达到预期的处理效果。关键词：养猪场废水；有机废水；UASB；SBR；氧化塘英文摘要iiAbstractAlargenumberofaquaculturewastewaterrichinnutrients,ifnottreateddirectlydischargedintowaterbodiesoutsidewilloftenresultineutrophication.Emissionsfromswinewastewaterischaracterizedbyaconcentrationofstronghydraulicshockloads,highconcentrationsoforganicmatter,hydrolysisacidificationrapidsedimentationperformance.ThisdesignusesUASB+SBRtreatmentprocess,theprocessadvantagesofArtsoftheorganicmatter,suspendedsolids,nitrogenandphosphorusremovalwereverygood.First,adjustthepoolwatertoenter,removemostsuspendedsolidsandasmallamountoforganicmatter,waterwellsintothecollection,bypumpingtotheUASBreactor,mostoftheorganicmatterisdegraded,andproducemethane.UASBreactoreffluentintotheSBRreactorforsubsequentprocessing,partoftheorganicmatterandmostoftheNH3-Ndegradation.SBRreactoreffluentasSS,CODisalsohigh,affectingwaterquality,sobyoxidationpondforfurtherprocessingtomeetthedischargestandardsrequirements.Thetreatedwastewatertoachieveemissionstandardsforlivestockandpoultrybreedingindustry(GB18596-2001)emissionstandards,thedesignprocesscanbeusedtoachievethedesiredtreatmenteffect.Keywords:Piggerywastewater.；Organicwaste；USAB；SBR；Oxidationpond目录iii目录摘要............................................................................................................................IABSTRACT......................................................................................................................II目录.........................................................................................................................III第一章前言.............................................................................................................11.1毕业设计课题及研究目的意义........................................................................................11.1.1课题的意义..............................................................................................................11.1.2课题研究的目的.....................................................................................................21.2国内外养殖业污染现状及防止措施................................................................................21.2.1国外养殖业污染及防治措施..................................................................................21.2.2国内养殖业污染现状..............................................................................................41.3养殖厂废水处理的发展现状............................................................................................51.3.1国外发展现状..........................................................................................................51.3.2国内发展现状..........................................................................................................51.3.3研究现状.................................................................................................................61.3.4其他相关处理技术.................................................................................................91.3.5结论与展望.............................................................................................................91.4养猪场废水处理工艺发展趋势......................................................................................10第二章设计任务说明...............................................................................................142.1设计依据...........................................................................................................................142.2设计思想...........................................................................................................................142.2.1设计原则...............................................................................................................152.3水质水量...........................................................................................................................152.3.1设计水质水量的确定...........................................................................................152.3.2污水来源...............................................................................................................152.3.3水质特点................................................................................................................152.3.4污水水质................................................................................................................162.3.5排放标准...............................................................................................................16第三章污水处理工艺选择.......................................................................................173.1废水工艺选择...................................................................................................................173.2工艺流程.......................................................................