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《不同淋洗劑和淋洗條件下重金屬污染土壤淋洗修復(fù)研究進(jìn)展_孫濤.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫(kù)。
1、浙江農(nóng)林大學(xué)學(xué)報(bào),2015,32(1):140-149JournalofZhejiangA&FUniversitydoi:10.11833/j.issn.2095-0756.2015.01.021不同淋洗劑和淋洗條件下重金屬污染土壤淋洗修復(fù)研究進(jìn)展1,21,21,2孫濤,陸扣萍,王海龍(1.浙江農(nóng)林大學(xué)浙江省森林生態(tài)系統(tǒng)碳循環(huán)與固碳減排重點(diǎn)實(shí)驗(yàn)室,浙江臨安311300;2.浙江農(nóng)林大學(xué)環(huán)境與資源學(xué)院,浙江臨安311300)摘要:土壤淋洗修復(fù)技術(shù)作為一種快速有效的污染土壤治理技術(shù)越來(lái)越受到重視,其適用于受高濃度重金屬污染的土壤。著重闡述了近年來(lái)不同淋洗劑以及淋洗
2、條件對(duì)重金屬污染土壤的修復(fù)效果,并綜述了不同淋洗劑對(duì)不同形態(tài)重金屬淋洗效果,討論了淋出液的處理及淋洗劑的回收,同時(shí)介紹了國(guó)內(nèi)外重金屬污染土壤淋洗修復(fù)工程實(shí)踐。指出在眾多淋洗劑中以天然有機(jī)酸因低生態(tài)毒性和高降解性而最具有研究前景。應(yīng)綜合考慮各影響因素,選擇最優(yōu)條件達(dá)到最好的修復(fù)效果,而在選擇淋洗劑時(shí),也應(yīng)考慮其本身的生物降解性和生態(tài)毒性。無(wú)論哪種淋洗劑,均以可交換態(tài)和碳酸鹽結(jié)合態(tài)形式存在的重金屬容易被淋出,而相對(duì)穩(wěn)定的殘?jiān)鼞B(tài)較難去除。本文最后提出了研究中存在的問題,并展望了今后淋洗技術(shù)的研究方向,旨在為研究重金屬污染土壤修復(fù)技術(shù)提供理論依據(jù)。表4參70關(guān)鍵詞:土
3、壤學(xué);重金屬污染;土壤修復(fù);綜述;土壤淋洗技術(shù);土壤污染;生物有效性中圖分類號(hào):X53;S158文獻(xiàn)標(biāo)志碼:A文章編號(hào):2095-0756(2015)01-0140-10Advanceinwashingtechnologyforremediationofheavymetalcontaminatedsoils:effectsofeluantsandwashingconditions1,21,21,2SUNTao,LUKouping,WANGHailong(1.ZhejiangProvincialKeyLaboratoryofCarbonCyclinginFore
4、stEcosystemsandCarbonSequestration,ZhejiangA&FUniversity,Lin’an311300,Zhejiang,China;2.SchoolofEnvironmentalandResourceSciences,ZhejiangA&FUniversity,Lin’an311300,Zhejiang,China)Abstract:Asaneffectivetechnologyforrapidremediationofsoilshighlycontaminatedwithheavymetals,soilwashingha
5、sincreasinglyreceivedattentioninrecentyears.Thispaperprovidesanoverviewonrecentadvancesinresearchontheefficacyofvariouseluantsandwashingconditionsassociatedwiththewashingtechnologyforremediationofsoilscontaminatedwithheavymetals.Effectofeluantsonwashingefficiencyofvariousfractionsof
6、heavymetalsinsoils,andthetreatmentandreuseofthespentwashingsolutionswerediscussed.Howtotreatandrecyclewastewashingsolutionsaftersoilbeingwashedwasdiscussedaswell.Amongtheeluantsap-pliedintheglobalremediationpractices,naturalorganicacidshavebeenrecognizedasthemostpromisingchemicalsfo
7、rsoilwashing,becauseoftheirlowecotoxicityandhighbiodegradabilitywhichhavebeenconsid-eredasimportantcriteriaforeluantsselection.Regardlessoftheeluanttype,heavymetalsinexchangeableandcarbonatefractionaremostlikelytoberemoved,whereasthoseinresidualfractionarerelativelystableanddifficul
8、ttoberemovedwithsoi