欢迎来到天天文库
浏览记录
ID:53270850
大小:254.70 KB
页数:4页
时间:2020-04-17
《CAST工艺应对有机冲击的调控技术析因试验研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第29卷第19期中国给水排水Vol_29NO.192013年10月CHINAWATER&Ⅵ,ASTEⅥ,ATER0ct.2O13CAST工艺应对有机冲击的调控技术析因试验研究阳春,张真真,王亚丹,袁克品,刘少武(1.重庆大学三峡库区生态环境教育部重点实验室,重庆400045;2.重庆水务集团股份有限公司,重庆400015)摘要:采用规模为25m/d的CAST现场中试装置,通过3析因试验进行了应对有机冲击的调控技术研究,调控因子为充水比和污泥回流比,以进水COD值为污水厂设计进水COD值的2倍时中试装置的出水水质作为响应因子。冲击时出水COD浓度升高(P<0.
2、01)且达不到一级B排放标准,但对出水氮、磷等指标的影响不显著。调节充水比和污泥回流比可降低冲击负荷对出水水质的影响(P<0.01),充水比呈正效应而污泥回流比呈负效应,且充水比的效应值高于污泥回流比。当充水比为l5%时采用30%的回流比可保证出水水质达标,但当充水比为25%和35%时,需要70%的回流比才能保证出水水质达标。通过降低充水比和提高污泥回流比可应对有机冲击对CAST工艺运行的影响,但此调控策略需统筹考虑污水厂的实时进水量和污泥回流设备的工况,并结合曝气系统的工作模式,以获得最佳的综合调控效果。关键词:CAST工艺;有机冲击;析因试验;充水比;污
3、泥回流比中图分类号:X703文献标识码:C文章编号:1000—4602(2013)19—0109—04FactorialExperimentonAdjustmentMeasuresofCyclicActivatedSludgeTechnologyProcessforCopingwithOrganicShockLoadsYANGChun,ZHANGZhen—zhen.WANGYa—dan,YUANKe—pin.LIUShao—WO(1.KeyLaboratoryofThreeGorgesReservoirRegion’SEco—Environment4、tryofEducation>.ChongqingUniversity,Chongqing400045,China;2.ChongqingWaterGroupCo.Ltd.,Chongqing400015,China)Abstract:Aninsitufactorialexperimentwascarriedoutusingapilot—scaleCASTreactorwithca—pacityof25m/dforcopingwithorganicshockloads.Theadjustmentfactorswereinfluentratioandsludg5、erecycleratio,andtheresponsefactorsweretheefluentqualityparametersofthepilot—scaleCASTreactoroperatedwithdoubleinfluentCODconcentrationofthatdesignedforWWTP.TheefluentCODconcentrationwasafectedbytheshockloads(P<0.01),anddidnotmeetthefirstlevelBdischargecriteria.Efluentammonianitrog6、en,phosphorusandotherindexeswerenotafected.Theadjustmentofinfluentratioandsludgerecycleratiocouldreducetheinfluenceofshockloads(p<0.01)ontheeflu—entquality,showingpositiveandnegativeeffectsrespeetively.Adjustingtheinfluentratioproducedastrongereffectthanadjustingtherecycleratio.Ati7、nfluentratioof15%,theefluentqualitymetthedis—chargestandardsusingsludgerecycleratioof30%.Atinfluentratiosof25%and35%,theefluentqualitymetthedischargestandardsusingsludgerecycleratioof70%.Theinfluenceoforganicshock基金项目:国家水体污染控制与治理科技重大专项(2009ZX07315—002—01)·109·第29卷第19期中国给水排水loadsont8、heoperationofCASTreactorco
4、tryofEducation>.ChongqingUniversity,Chongqing400045,China;2.ChongqingWaterGroupCo.Ltd.,Chongqing400015,China)Abstract:Aninsitufactorialexperimentwascarriedoutusingapilot—scaleCASTreactorwithca—pacityof25m/dforcopingwithorganicshockloads.Theadjustmentfactorswereinfluentratioandsludg
5、erecycleratio,andtheresponsefactorsweretheefluentqualityparametersofthepilot—scaleCASTreactoroperatedwithdoubleinfluentCODconcentrationofthatdesignedforWWTP.TheefluentCODconcentrationwasafectedbytheshockloads(P<0.01),anddidnotmeetthefirstlevelBdischargecriteria.Efluentammonianitrog
6、en,phosphorusandotherindexeswerenotafected.Theadjustmentofinfluentratioandsludgerecycleratiocouldreducetheinfluenceofshockloads(p<0.01)ontheeflu—entquality,showingpositiveandnegativeeffectsrespeetively.Adjustingtheinfluentratioproducedastrongereffectthanadjustingtherecycleratio.Ati
7、nfluentratioof15%,theefluentqualitymetthedis—chargestandardsusingsludgerecycleratioof30%.Atinfluentratiosof25%and35%,theefluentqualitymetthedischargestandardsusingsludgerecycleratioof70%.Theinfluenceoforganicshock基金项目:国家水体污染控制与治理科技重大专项(2009ZX07315—002—01)·109·第29卷第19期中国给水排水loadsont
8、heoperationofCASTreactorco
此文档下载收益归作者所有