含盐废水生化处理耐盐污泥驯化的研究_常丽丽
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2020-02-23 19:13:11
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Acclimationofsalt-tolerantsludgeforthebiochemicaltreatmentofsalt-containingwastewaterChangLili,WeiJunfeng(CollegeofEnvironmentalandChemicalEngineering,DalianUniversity,Dalian116622,China)含盐废水生化处理耐盐污泥驯化的研究常丽丽,魏俊峰(大连大学环境与化学工程学院,辽宁大连116622)[摘要]对两种活性污泥,即高盐环境的海边污泥和普通废水处理厂的污泥进行了耐盐污泥对比驯化研究。结果表明:经过一定时间的驯化,两种污泥都可以驯化成具有高降解性能的耐盐污泥,且都能有效地处理含盐废水。驯化后海边污泥在NaCl质量浓度为35000mg/L,CODCr容积负荷为1.8kg/(m3·d)时,出水CODCr去除率可达到97%以上;而普通污泥在NaCl质量浓度为15000mg/L,CODCr容积负荷为1.55kg/(m3·d)时,出水CODCr去除率可达到94%以上。同时对两种污泥在驯化过程中的驯化特点、生物学过程及系统的抗冲击性能进行了比较研究。与普通污泥相比,海边污泥具有驯化期短、耐冲击性能强等特点。[关键词]含盐废水;生化处理;活性污泥;污泥驯化[中图分类号]X505;X703.1[文献标识码]B[文章编号]1005-829X(2009)12-0034-04Abstract:Theacclimationresearchoftwokindsofactivatedsludge,oneofwhichisfromthecoastandtheotherisfromthecommonwastewatertreatmentplant,hasbeencompared.Theresultsshowthatafterproperacclimation,salt-tolerantsludgewithhighdegradationcapacitycanbeformedfromthesetwokindsofsludge,andcanbeusedfortreatingsalt-containingwastewatereffectively.Inthebiologicaltreatmentprocess,whentheNaClconcentrationofthesludgefromthecoastis35000mg/L,itsCODCrvolumetricloadingis1.8kg/(m3·d),andCODCrremovalrateoftheeffluentwaterisabove97%;whilebycontrastwithcommonsludge,theNaClconcentrationis15000mg/L,theCODCrvolumetricloadingis1.55kg/(m3·d),andeffluentCODCrremovalrateisabove94%.Atthesametime,thecharacteristicsofacclimationprocess,thebiologicallyevolutionaryprocessandtheanti-shockperformanceofthetwokindsofsludgearecompared.Comparedwiththecommonsludge,theseasidesludgehasthecharacteristicsofshortacclimationperiod,stronganti-shockperformanceandsoon.Keywords:salt-containingwastewater;biochemicaltreatment;activatedsludge;acclimationofsludge!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!第29卷第12期2009年12月工业水处理IndustrialWaterTreatmentVol.29No.12Dec.,2009(2)对PAM/AMPS/DMDAAC结构进行红外光谱和透射电镜表征,表明PAM/AMPS/DMDAAC链节上含有季铵盐和磺酸盐基团,分子呈现长链结构,分子链刚性好,交联现象少。[参考文献][1]袁宗宣,郑怀礼,舒型武.絮凝科学与技术进展[J].重庆大学学报,2001,24(2):143-147.[2]王杰,肖锦,詹怀宇.两性高分子水处理剂的研究进展[J].环境污染治理技术与设备,2000,1(3):14-18.[3]吕生华,马建中,吕庆强,等.二甲基二烯丙基氯化铵与丙烯酰胺共聚物的结构
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