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时间:2019-05-21
《pH值和纯氧曝气对氨氮去除的影响研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、第32卷第9期中国给水排水Vol.32No.92016年5月CHINAWATER&WASTEWATERMay2016pH值和纯氧曝气对氨氮去除的影响研究陈丽珠,巢猛,丁卫,刘清华,陈卓华(东莞市东江水务有限公司,广东东莞523112)摘要:针对南方饮用水源水氨氮季节性、突发性污染的特点,在中试条件下,结合水厂传统制水工艺和活性无烟煤滤池联用纯氧曝气,探讨pH值对氨氮去除效果的影响机理,并进行成本核算,重点考察了砂滤池、活性无烟煤滤池、活性无烟煤联用纯氧曝气三组制水工艺在不调节pH值和调节pH值为7.2、7.4、7.6、7.8、8.0、8.2、8.4、8.6条件下氨氮浓度变化及去除量。结果
2、表明,调节pH值后,对氨氮的去除效果提高。在pH值为8.0时,这三组工艺对氨氮的绝对去除量分别为1.23、1.72、3.05mg/L,活性无烟煤联用纯氧曝气对氨氮的去除效果最好。投加NaOH调节pH值,待滤水相对于原水pH值下降,滤后水的pH值进一步降低;投加NaOH调节pH值为8.0,成本约3为0.031元/m水,适用于水厂应对季节性、突发性氨氮污染。关键词:氨氮;pH值;纯氧曝气;活性无烟煤滤池中图分类号:TU991文献标识码:C文章编号:1000-4602(2016)09-0058-04EffectofpHandPureOxygenAerationonAmmoniaNitrogen
3、RemovalCHENLi-zhu,CHAOMeng,DINGWei,LIUQing-hua,CHENZhuo-hua(DongjiangShuiwuCo.Ltd.,Dongguan523112,China)Abstract:Toaddresstheproblemsofseasonalandsuddenpollutionofammonianitrogeninthesoutherndrinkingwatersource,theeffectofpHvalueonremovalofammonianitrogenwasinvestigated,andthecostaccountingwasper
4、formedbasedonthetraditionalwatertreatmentprocessandactivatedan-thracitefilterwithpureoxygenaeration.Theammonianitrogenconcentrationsandremovalrateswerein-vestigatedwithoutadjustingpHandwithadjustingpHto7.2,7.4,7.6,7.8,8.0,8.2,8.4and8.6forsandfilter,activatedanthracitefilterandactivatedanthracitef
5、ilterwithpureoxygenaeration,respec-tively.Theresultsshowedthattheremovalefficiencyofammonianitrogencouldbeimprovedafteradjus-tingpH.WhenpHwas8.0,theremovalratesofammonianitrogenbythethreegroupsofprocesseswere1.23mg/L,1.72mg/Land3.05mg/Lrespectively.Thebestremovalefficiencywasachievedbythegroupofa
6、ctivatedanthracitefilterwithpureoxygenaeration.ThepHofthewatertobefilteredde-creased,andthepHofthefilteredwaterdecreasedfurtherwhenpHwasadjustedwithadditionofNaOH.3ThecostofNaOHforadjustingpHto8.0wasabout0.031yuan/m.Itwasapplicabletowatertreatmentplantstorespondtoseasonalandsuddenpollutionofammon
7、ianitrogen.Keywords:ammonianitrogen;pHvalue;pureoxygenaeration;activatedanthracitefilter氨氮是微污染水源中较普遍的一类污染物,季节性和突发性氨氮污染会影响水厂工艺运行。给水基金项目:国家水体污染控制与治理科技重大专项(2009ZX07423-003)·58·www.watergasheat.com陈丽珠,等:pH值和纯氧曝气对氨氮去除的影响研究第
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