Page 187 - 《水资源与水工程学报》2025年第1期
P. 187

!36 "!1 #                         & ' ( ) & * + , -                               Vol.36No.1
               2025 $ 2 %               JournalofWaterResources&WaterEngineering                 Feb.,2025

            DOI:10.11705/j.issn.1672-643X.2025.01.20


                         žÛ—Ÿ ¡¢£¤…¥¦§KD7


                                          `K0¨§tpDE


                                                              2,3
                                                    1
                                             def , 9/g , ZRh              1,3
                     (1. >?$T¨«sTz€³Àýâ, >? ?@ 710032;2. fñVT&Z Åã$üS(ÜT]&Z,
                               ·• fñ 471023;3. ?@$ý%|L& (ÜT]&Z, >? ?@ 710055)
                 F G: gh)±¸ ¢i¸[FÃgh)‰¼jåèm()„ãWÔ, Ø9)±¸jY, Jßïþb*(â‹W
                 _`。t“ÇÈd(Utjåè\]m()„ã, ¹¬6T©omgh)±¸, ʺ)C­b45gh)±¸
                 d()C„ãm34åæ; kl“t€½}mÜ|1kold()C„ãmÇÕ´å‹y-(m·ÔmÉb
                 ûã§; ʺ Zeta Y_、Xc½nQQÊ(XRF) ‹ðñYÔËòó(SEM) .òB­b, ¡õ“Ü|1kolÇÕ
                 d(gh)±¸m()¨V‹-(mmÉb¨©。45äåôõ: ‚a€—Ž, d(m)Crz—¡; )±¸
                 ¿€—Ž, d(m)Crz—L; ™šÜ|1kol½}mÅÆ, ÇÕd(m)CrzCDô¡; ™šgh)±¸
                                2+                                         2+
                 )i˽m¸ ,Pb mµ¶´êCDªEJN•%&, ÇÕ3md( Pb mµ¶´ê‘Ž“© 40%; Ü|1
                                                                   2+
                 kolÇÕd(ʺ/-U¬¨¡“iâ)iʊ, Åܓ Pb mÉbã§。
                 HIJ: d(; Ü|1kol; gh)±¸; )Crz; µ¶´ê
                 KLMNO:TU444;TU411.4   PQRST:A    PUVO:1672643X(2025)01018308
                Filtrationandantiseepagemechanism ofcalcium lignosulfonatemodified
                                              loessforlandfillleachate


                                                               2,3
                                                                                1,3
                                                   1
                                       SUNYangjun,HUWenle ,ZHANGShixu
                   (1.SCEGCMechanizedConstructionGroupCo.,Ltd.,Xi’an710032,China;2.SchoolofIntelligentConstruction
                      andCivilEngineering ,LuoyangInstituteofScienceandTechnology,Luoyang471023,China;3.Collegeof
                           CivilEngineering,Xi’anUniversityofArchitectureandTechnology,Xi’an710055,China)
                 Abstract:Thelongtermintrusionofleachate,richinvariouscationsandanions,canleadtothedegra
                 dationoftheimpermeabilityoflandfillliners,resultinginleachateleakagethatcontaminatessurrounding
                 soilandwaterenvironments.Inordertoimprovetheantiseepageperformanceofloessasalinermateri
                 al ,weconductedpermeabilitytestsonartificiallypreparedlandfillleachatetostudytheimpactof
                 leachateonthepermeabilityofloess.Thestudyfurtherexaminedtheimprovementeffectsofvaryingdosa
                 gesofcalciumlignosulfonateonthepermeabilityofloessanditsadsorptioncapacityforheavymetalions.
                 Additionally ,microscopictestsincludingZetapotentialmeasurements,Xrayfluorescencespectroscopy
                 (XRF),andscanningelectronmicroscope(SEM)testswereconductedtoelucidatetheimpermeability
                 mechanismofcalcium lignosulfonatemodifiedloessagainstleachateanditsadsorptionmechanismsfor
                 heavymetals.Theresultsindicatethatahighercompactiondegreesignificantlyreducesthepermeability
                 coefficientofloess;conversely,anincreasedleachateconcentrationelevatesit.Asthedosageofcalcium
                 lignosulfonateincreases,thepermeabilitycoefficientofmodifiedloessgraduallydecreases.Overtime,
                                        2+
                 theremovalefficiencyofPb graduallydeclinesandstabilizes,whilethemodifiedloessdemonstratesan
                                                  2+
                 approximately40% improvementinPb removalefficiency.Thecalcium lignosulfonatemodifiedloess
                !"#$:20240920; %&#$:20241202
                '()*: !"#$%&'()*+,(42402291、12402430); ·•§#$%&'(+,(242300421255、242300420350)
                +,-.: \ñO(1982—), =, >?d•6, Ñ%, Ž…T]G, JK'(T]üXm45~T]a”TU。
                ¤¥+,: aà?(1995—), =, ·•ß?6, 12, òeABC, JK¾(§&S_`'(üXmB&~45TU。
   182   183   184   185   186   187   188   189   190   191   192