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ؽُUˮ̎g(sh)
Դ:̩{h(hun)Ƽ޹˾ | l(f)rg:2018-8-6 | g[Δ(sh)

  ؽُUˮ̎g(sh)ľCϷ


늻W(xu)ķٺͷǽٱMbo@ijЩµ|(zh)һNˇ^鱣C僮a(chn)Ʒ|(zh)ʹ僌Ӿƽ⻬^cwι̽Y(ji)ǰ僼ϵ(͡PƤ)صϴɃ僺僼ĸҺϴɃһa(chn)^бȻų像UˮM像Uˮ̎ؽُUˮ̎


像Uˮ̎һNyԏصҸ(f)sĻؽُUˮ̎ˮ̎횸(j)像Uˮˮ|(zh)ˮca(chn)šla(chn)ؓcˮʽؽˮ̎ˮ|(zh)(f)sɷֲ׿к軯Art~\kyȵؽȾ^Щ°»ͻ׃Ą|(zh)ΣO


像Uˮ̎ҪᘌƯϴUˮgUˮ僼ϴUˮˢϴƺ͘OďUˮԼڲ“ð©”a(chn)ďUˮ߀ЏUˮ̎^ˮŷԼҵˮ像UˮȾh(hun)ҪЃɂ;һٝȸߵ像UҺŷһ^͵像Uˮ(ҪϴUˮ)ŷš


像Uˮ̎ĿnjUˮекж|(zh)Էx̎ãʹж|(zh)׃ɟo



ؽُUˮg(sh)ĬF(xin)


W(xu)

W(xu)ʹUˮгܽB(ti)ؽD(zhun)׃?yu)鲻ˮؽٻķкͳȡ?/span>


кͳ


ںؽٵďUˮмAMкͷ(yng)ʹؽɲˮĚʽԷxкͳdzõ̎Uˮ`CڲҪעŽc[1](1)кͳUˮpHֵߣҪк̎ſŷ;(2)UˮгжNؽٹUˮкZnPbSnAlȃԽٕrpHֵƫܽAҪpHֵзֶγ;(3)UˮЩx磺uֲ|(zh)пcؽγɽj(lu)Ҫк֮ǰ轛(jng)^A(y)̎;(4)ЩwС׳to



턩ʹUˮؽxȥķcкͳȣă(yu)cǣؽܽȱܽȸҷ(yng)pHֵ7—9֮g̎ďUˮһ㲻кȱc[2]wСγzw;턩ˮК򻯚wa(chn)Ⱦ˷ֹȾ}ӢW(xu)о˸M̎ďUˮxԵļxӺһؽx(ԓؽٵxƽȱҪȥؽȾ|(zh)ƽȸ)ڼMȥؽٵȏUˮеؽٵܽ@ӏUˮԭеؽxӾͱMȥؽxȷxͬrֹкw򻯚ɺxӚ}


߀ԭ̎


W(xu)߀ԭ


像UˮеCrҪCr6+xΑB(ti)UˮͶ߀ԭCr6+߀ԭ΢Cr3+ͶʯһNaOHa(chn)Cr(OH)3xȥW(xu)߀ԭ像Uˮ瑪(yng)õg(sh)֮һ҇Vđ(yng)ԭաܴܳˮ͸ߝȏUˮ_(j)Ͷ߀ԭIJͬɷ֞FeSO4NaHSO3FмSO2(yng)ûW(xu)߀ԭ̎CrUˮArһʯUNaOHtˎMø̎ɱ@ǻW(xu)߀ԭȱc


Fw


Fwg(sh)Ǹ(j)a(chn)Fwԭl(f)չںCrUˮм^FeSO4ʹCr6+߀ԭCr3+, Fe2+Fe3+{(dio)(ji)pHֵ8ʹFexӺCrxӮa(chn)ͨ՚┇貢ﲻ෴(yng)γtFw͹ˇgЪʽBm(x)ʽFwγɵ໯W(xu)(wn)ԸڹҺxÓˮFw̎CrUˮ⣬؄emںؽxӵ僻ϏUˮ҇(yng)Fwѽ(jng)Ўʮvʷ̎ďUˮ_ŷŘ˜ڇ(ni)價I(y)Б(yng)^


FwO(sh)了ͶY㡢a(chn)Ⱦȃ(yu)cγFw^Ҫӟ(s70z϶)ܺ^̎}ȸߣв̎Hgͽj(lu)Uˮȱc


늽ⷨ


늽ⷨ̎CrUˮ҇ѽ(jng)жʮĚvʷȥʸߡoȾؽٿɻõȃ(yu)cs30NUˮҺеĽxӿM늳e늽ⷨһN^̎g(sh)ܜpܻCuAgCdȽё(yng)ڏUˮ^늽ⷨɱ^һ㽛(jng)s늽⽛(jng)Ч^


܄ȡx

܄ȡ[4]Ƿx̓|(zh)õķҺһҺ|Bm(x)xЧ^áʹ@NrҪx^xԵȡUˮؽһxӻxʽڣԗlcȡl(f)j(lu)Ϸ(yng)ˮ౻ȡЙC࣬ȻډAԗl±ȡˮʹ܄ѭh(hun)á@ҪȡrעxˮMȡ^(yu)ԽȻ܄ȡ^еʧ^ԴĴʹ@Nһ(yng)ܴܵ



ĪؽY(ji)(gu)ȥؽxӵһNЧ̎ؽُUˮлֲ̿ʯǘ֬ȡ̿b了ΣڏUˮБ(yng)ÏV̿Чʵͣ̎ˮ|(zh)y_Ҫһ像UˮA(y)ֲ̎|(zh)DZ^rѸֲɸֲ֬̎CrNiUˮгɹ(jng)P(gun)оǼؽxӵǘ֬“(lin)󣬿؏(f)ʹ10Σ]@[5]øԵĺʯؽُUˮPb2+Hg2+Cd2+кܺõ̎Uˮؽٺ@ˮCŷŘ˜īIÓʯҲһNõճVXÓʯԗlŒCr6+ȥ_99%ˮCr6+ڇŷŘ˜ЌH(yng)ǰ


Ĥxg(sh)

Ĥxø߷еxԁM|(zh)xļg(sh)늝BB͸Ĥȡ^V늝B̎價I(y)Uˮ̎UˮMɲ׃ڻزʹáCu2+Ni2+Zn2+Cr6+ȽxӏUˮm늝B̎гO(sh)B͸ѴҎ(gu)ģZnNiCrƯϴˮͻؽُUˮ̎÷B͸̎像Uˮ̎ˮԻF(xin)]·ѭh(hun)ҺĤ像UˮоܶЩI(lng)ҺĤɻA(ch)ՓоM뵽I(y)(yng)A҇͊WҺĤg(sh)̎ZnUˮҲ(yng)AuUҺ̎[7]Ĥȡg(sh)һNЧoȾķxg(sh)ԓ헼g(sh)ڽȡкܴMչ


xӽQ̎

xӽQ̎xӽQxUˮк|(zh)ķ(yng)õxӽQxӽQ֬ʯȵxӽQ֬zͺʹ͡ǰx(f)sɱߡڑ(yng)ܴܵơxӽQǿQƄӵxc̎Һеxͨ^xӽQ팍F(xin)ƄxӽQĄxgȲͽQϵĹܻxӵH(sh)rxȱٱQxӽQQpá@Nϵđ(yng)ԽԽ[11]ÓʯҪɷֵճˮÛԺáȱe^xӽQ(jng)xӽQDžs^yȻʯڌؽُUˮ̎иă(yu)cʯ[9]ǺW(wng)ܽY(ji)(gu)X}V(ni)ȱeЪصxӽQо[10]ʯďUˮȥؽxӵęC(sh)rxӽQpãSxӽQȡռҪλNaClȻʯMA(y)̎xӽQͨ^xӽQ^Uˮؽxӝȿɝs30ʯȥ~NaCl^ȥ_97%ɶQѭh(hun)Ҍ~ȥʲ


̎g(sh)


ڂy(tng)гɱ(f)sڴ͝ȵкȾy̎ȱc(jng)^̽оg(sh)ܵ˂ҕSؽٶ΢оMչ\g(sh)̎ؽُUˮʬF(xin)l(f)չ^(j)ȥؽxӵęCͬɷ֞ﻯW(xu)Լֲޏ(f)




ؽُUˮg(sh)չ


Sȫɳm(x)l(f)չ(zhn)ԵČʩѭh(hun)(jng)坍a(chn)g(sh)ԽԽܵ˂P(gun)עؽُUˮĩ坍a(chn)ˇ|(zh)ѭh(hun)áUˮõȾCϷAΰl(f)չδؽُUˮ팢ͻŽׂ棺


(1)؞ѭh(hun)(jng)ҕ坍a(chn)g(sh)_l(f)c(yng);|(zh)YԴD(zhun)ʺѭh(hun)ʹ;Դ^pؽȾĮa(chn)ȫ^̿Y(ji)ϏUˮCKF(xin)Uˮŷ


(2)ؽُUˮ̎g(sh)ܶ\g(sh)Ǿ^l(f)չ?ji)ļg(sh)гɱЧɶȾȃ(yu)cS򹤳W(xu)ȼg(sh)İl(f)չ͑(yng)ãиЧͶԵľNɹ\g(sh)ďV(yng)ṩlѽ(jng)Ⱦh(hun)ɲֲޏ(f)g(sh)۵ͬrH˭h(hun)߀ԫ@һĽ(jng)Ч


(3)Cһwg(sh)δ像Uˮg(sh)ğc像UˮNN價ˇܴ󣬃HʹһNUˮ_ЧˣC϶Ng(sh)cһwg(sh)(yng)\


像Uˮ̎վš

 


像Uˮˮ|(zh)^xȡšǧfeÿһNˇضĿƅ(sh)Լ\еą(sh)ҪTĹˆTMӛ䛡


(sh)׃ֱӛQO(sh)Ƿ\ҲДO(sh)ϴrCϴЧ(j)ÿ찴rӛ@Щ(sh)䰸l(f)F(xin)(sh)(j)(yng)rԭεĹϷ򼰕r“(lin)ϵҹ˾ۺ(w)T@Щϵԭ䰸


像Uˮ̎վճ„(w)


1.ˆT(yng)ÿՌ像S܇gMЙz_Uˮռ罹~ҺW(xu)ЙCȾϵȲŷŵUˮվΪռ̎ҺȝȸߵďUˮҲһŷŷ


2ˆT(yng)ÿ_ʼǰO(sh)Mмęz@ڰl(f)F(xin)Ć}r磺ˮǷ©ˮ


3ˆT(yng)ԓע_O(sh)O(sh)\ОԄӻք\еO(sh)_CҪ\вO(sh)ēp磺O(sh)\ǰAεyTǷ_òڛ]ˮėl¿D(zhun)


4ˆTO(sh)\к(yng)֕rӛO(sh)\Ѕ(sh)O(sh)\РrMбO(jin)Юr(yng)o̎o̎(yng)ؓ؟˅R


5ˆT(yng)ÿյO(sh)ϴÿ̎혋(gu)ϴrCДࡢϴˮȑ(yng)ȫCO(sh)Lڷ(wn)\dzVĤͷB͸ĤϴЧֱӛQˏUˮĻʺͳˮˮ|(zh)ԼĤʹÉ


6.ˆT(yng)ÿ헲JмԴ_ϵy(tng)(wn)\С绯W(xu)ϵy(tng)t߀ԭrgҪˮϵy(tng)УA(y)̎ϵy(tng)ÿϴһε


7ˆTÿ°rP(gun)]Uˮ̎O(sh)ȫ\еO(sh)䣬Uˮ̎վ(yng)ԓˆTMȫIJO(jin)CO(sh)(wn)\


8.Uˮ̎܇gl(wi)C܇gĭh(hun)l(wi)


9ˆT(yng)(1»2)O(sh)ͣC\B(yng);SoԱC̎O(sh)ܲg\

 
 
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