Page 85 - 《水资源与水工程学报》2022年第3期
P. 85

!33 " ! 3 #                       & ' ( ) & * + , -                               Vol.33No.3
               2022 $ 6 %               JournalofWaterResources&WaterEngineering                 Jun.,2022

            DOI:10.11705/j.issn.1672-643X.2022.03.11


                         ªv*«%¬­®¯° Cr( Ⅵ) ±²_ª


                                              ªÆ¬¿ÞTU


                        1,2        1,2         1,2        1,2         1,2        1,2       1,2        1,2
                ipq , r2q , rss , tuu , Dv[ , wxy , - z , D{t
                                (1. #$%ÿ1 •UrB)åUèÿ1`aqrn, #$ ij 450000;
                                  2. #$%ÿ1`aPïõlm0°(^oy, #$ ij 450000)
                 D E: Õv\‹ÿÿ@W Cr( Ⅵ) @H‡E, Þ[ÀèÖz¾(^A 4 †ÀèÈÉÜ 4 †ŽÈÉv Cr( Ⅵ) Ê
                 *­, šAËÍ;"、 ÈÉÚ[z、 ÈÉÌ_Ï、 sÍڕì™v‹ÿÿ@WI¥õw›éê, õ;~Î
                 &¶Ï“ X­‚ ­va¡•ˆ˜™š。›œ: ÈÉ/r×Ð* Cr( Ⅵ) Ñ2»s 2∶1 |õw›{A。
                 ‹ÿôW¯Ò›[ýÉ;"@HWËÍt Cr( Ⅵ) ;"ނ¶‘; ëk‰Ó Cr( Ⅵ) @HôW¯( ËÍ;"s 100
                                                       5
                 mg/L ) $T 1.65L /r×ÐÈÉ( ;"s 2.9×10 mg/L) ?¿üIõ; /r×ÐÌ_Ïv Cr( Ⅵ) Ê*­
                 éêýk; sÍÚv/r×ÐüI Cr( Ⅵ) §R˜ç[; /r×Ð* Cr( Ⅵ) a¡•ˆo§Ô7€ü“À1r。
                 (^œÕÖs“/r×ÐQŽÈÉv\ Cr( Ⅵ) @H‹ÿÿ@Wõw›²³, £Äa¡•ˆžçv‹ÿô
                 W¯j߶%5è‰éê。
                 FGH: ÿ@W@H;Cr( Ⅵ) @H; I¥×6õ; /r×Ð; ÕÖs; j߶
                                       +
                 8IBJK:X523;TV211.1 2   LMNOP:A    LQRK:1672643X(2022)03008108
                          Applicationofinsituchemicalremediationtechnologyto
                                   groundwaterinaCr ( Ⅵ)contaminatedsite


                                                                 1,2
                                                                                                 1,2
                                                                               1,2
                                                 1,2
                               1,2
                     LIHuifang ,CHENWenfang ,CHENLeilei ,SHIWeiwei ,WANGRuilong ,
                                                  1,2
                                                                                1,2
                                                             1,2
                                       SHIYakun ,JINGQi ,WANGMengshi
                      (1.TheFirstGeologicalEnvironmentInvestigationInstituteofGeologicalMineralProspectingDevelopmentof
                            HenanProvince ,Zhengzhou450000,China;2.EngineeringTechnologyResearchCenterfor
                             GeoenvironmentalEcologicalRestorationofHenanProvince ,Zhengzhou450000,China)
                 Abstract:InviewofthepollutionofCr( Ⅵ)inthegroundwaterofacontaminatedsite,westudiedthere
                 movalrateofCr ( Ⅵ)byfourindividualagentsandfourcompoundagentsbysinglevariablemethod.The
                 effectsofextractionconcentration ,dosageofreagent,dilutionratioofreagentandacidadditiononthein
                 situremediationofgroundwaterwerediscussed,andthereactionproductswereanalyzedbyscanninge
                 lectronmicroscopyandX-raydiffraction.Theresultsshowedthatthebestremediationeffectwasob
                 tainedwhenthemolarratioofcalciumpolysulfidetoCr ( Ⅵ)was2∶1.TheconcentrationofCr( Ⅵ)inthe
                 sandparticlesfromthesiteaquifershowedalineardistributionafterleachingwithpollutedwaterofdiffer
                 entconcentrations.EachcubicmeterofCr( Ⅵ)contaminatedaquiferofthesite(leachedat100mg/L)
                                         6
                 required1.65Lof0.29×10mg/Lcalciumpolysulfidetoachievetotalremediation.Thedilutionratioof
                 calciumpolysulfidehadlittleeffectontheremovalrateofCr( Ⅵ);however,theadditionofacidcanpro
                 motethereductionofCr ( Ⅵ)bycalciumpolysulfide.Thereactionproductsofcalciumpolysulfidewith
                 Cr( Ⅵ)includedhydroxyapatiteandelementalsulfur.Thisstudyshowsthatthecombinationofcitricacid
                 andcalciumpolysulfidehasagoodeffectontheremediationoftheCr( Ⅵ)contaminatedsite,butthere

                !"#$:20210805; %&#$:20211203
                '()*: #$%45XY/(.3( Ç45Xý〔2019〕373 ã -8)
                +,-.: v5x(1991-), H, #$&iK, ÓM, -]lmR, (^‰Fs`a@Hõ。
                /0+,: ®cx(1983-), H, #$žçK, ÓM, ·RlmR, (^‰FsPï`aõ。
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