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时间:2019-03-05
《粉煤灰、城市污泥、尾矿砂配施用于无土排岩场生态修复人工土壤的持水性能研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、维普资讯http://www.cqvip.com农业环境科学学报2008,27(1):0160-0164JournalofAgro—EnvironmentScience粉煤灰、城市污泥、尾矿砂配施用于无土排岩场生态修复人工土壤的持水性能研究张鸿龄1,2,3,孙丽娜,郝栋4,孙铁珩,(1.沈阳大学环境工程重点实验室,辽宁沈阳1100#I;2.沈阳应用生态研究所,辽宁沈阳110016;3.中国科学院研究生院,北京100039;4.东北大学,辽宁沈阳110004)摘要:通过模拟降雨及降雨后自然条件下的土壤表面水分蒸发,对粉煤灰、城市污泥及采自于铁矿山上的尾矿砂以不同比例配比用于
2、无土排岩场生态修复人工土壤的持水性能进行了研究。结果表明,在不同配比的人工土壤中,粉煤灰与污泥比例为1:2的处理(Ⅳ)蓄水能力最强,饱和含水率比对照高11%,但持水能力较低;随着污泥配施比例的增加,人工土壤的蓄水能力和持水能力都在增强(I<Ⅱ<Ⅲ3、污泥;尾矿砂;持水性能;排岩场中图分类号:X171.4文献标识码:A文章编号:1672—2043(2O08)01—0160—05Water-holdingCapacityoftheArtificialSoilComposedofFlyAsh,SewageSludgeandMineTailingforEcologicalRepairingofMiningJunkyardZHANGHong—ling,SUNLi—na,HAODong,SUNTie-heng(1.KeyLaboratoryforEnvironmentalEngineering,ShenyangUniversit4、y,Shenyang110016,China;2.InstituteofShenyangAppliedEcology,ChineseAcademyofSciences,Shenyang110041,China;3.GraduateSchoolofChineseAcademyofSciences,Beijing100039,China;4.North-EastUniversity,Shenyang110004,China)Abstract:Tostudythewater—holdingcapacitiesoftheartificialsoilcomposedofflyash5、,sewagesludgeandminetailing,whichwasappliedtotheabandonedrockminingjunkyardreclamation,experimentsweredesignedtosimulaterainfallandnaturalevaporation.Theresultsindi—catedthatamongalltheartificialsoils,thetreatmentIV(theratioofflyashtosewagesludgewasl:2)hadthehighestwater-saturationcoeffi-6、cient,11%higherthanthatoftheCKtreatment,buthadashorterwater-holdingtimethanotherartificialsoils.Withtheratioofsewagesludgetoflyashincreasing,thewater—saturationcoeficientandthewater—holdingcapacityoftheartificialsoilbecamestronger(I<Ⅱ<Ⅲ<Ⅳ),butwhentheratiocameto2:1,thewater-holdingcapacity7、decreased.Thewater-holdingcapacityofthetreatmentwithminetailing(flyash:sewagesludge:minetailing=2:1:1)wasthestrongest.Inthewhole,thetreatmentⅢ(theratioofflyashtosewagesludgewas1:1)hadthebestphysicalcharacteristicbecauseofitsstableandbalanceablewater—holdingcapacity.
3、污泥;尾矿砂;持水性能;排岩场中图分类号:X171.4文献标识码:A文章编号:1672—2043(2O08)01—0160—05Water-holdingCapacityoftheArtificialSoilComposedofFlyAsh,SewageSludgeandMineTailingforEcologicalRepairingofMiningJunkyardZHANGHong—ling,SUNLi—na,HAODong,SUNTie-heng(1.KeyLaboratoryforEnvironmentalEngineering,ShenyangUniversit
4、y,Shenyang110016,China;2.InstituteofShenyangAppliedEcology,ChineseAcademyofSciences,Shenyang110041,China;3.GraduateSchoolofChineseAcademyofSciences,Beijing100039,China;4.North-EastUniversity,Shenyang110004,China)Abstract:Tostudythewater—holdingcapacitiesoftheartificialsoilcomposedofflyash
5、,sewagesludgeandminetailing,whichwasappliedtotheabandonedrockminingjunkyardreclamation,experimentsweredesignedtosimulaterainfallandnaturalevaporation.Theresultsindi—catedthatamongalltheartificialsoils,thetreatmentIV(theratioofflyashtosewagesludgewasl:2)hadthehighestwater-saturationcoeffi-
6、cient,11%higherthanthatoftheCKtreatment,buthadashorterwater-holdingtimethanotherartificialsoils.Withtheratioofsewagesludgetoflyashincreasing,thewater—saturationcoeficientandthewater—holdingcapacityoftheartificialsoilbecamestronger(I<Ⅱ<Ⅲ<Ⅳ),butwhentheratiocameto2:1,thewater-holdingcapacity
7、decreased.Thewater-holdingcapacityofthetreatmentwithminetailing(flyash:sewagesludge:minetailing=2:1:1)wasthestrongest.Inthewhole,thetreatmentⅢ(theratioofflyashtosewagesludgewas1:1)hadthebestphysicalcharacteristicbecauseofitsstableandbalanceablewater—holdingcapacity.
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