A mine drainage treatment system for AMD in remediation of metal sulfide mines - 论文
China?Geology?3?(2019)?396?397
?
China?Geology
Journal?homepage:?http://chinageology.cgs.cn
Research?Advances?
?
A?mine?drainage?treatment?system?for?AMD?in?remediation?of?metal?sulfide?mines
Shi-Tian?Houa,?b,?Jing-Yi?Caia,?b,?Ke-Yan?Tana,*,?Hong?Yangc,?Xin?Huc,?Zhe?Wanga,?d,?Xin?Yuana
?
a
?Key Laboratory of Eco-Geochemistry, National Research Center for Geoanalysis, Ministry of Natural Resources, Beijing 100037, China?China University of Geosciences(Beijing), Beijing 100083, China
?Key Laboratory of Geotechnical and Underground Engineering of Ministry of Euducation, College of Civil Engineering, Tongji University, Shanghai 200092, China?Key Laboratory of Beijing for Water Quality Science and Water Environmental Recovery Engineering, Beijing University of Technology, Beijing 100124, China
bc
d
?
?
1. Objective
In?the?process?of?mining,?sorting?and?smelting?metalsulfide?mines,?a?large?amount?of?acid?mine?drainage?(AMD)containing?concentrated?sulfate?(SO42?)?and?various?metalelements?(Fe,?Mn,?Cu,?Zn,?Ni,?etc.)?are?produced.?In?order?tosolve?current?problems?of?mine?acid?drainage,?we?haveimproved?the?existing?repair?technology?based?on?bio-geochemical?technology,?and?provided?a?new?treatmentsystem?for?AMD?from?metal?sulfide?mines.2. Method
As?shown?in?Fig.?1?and?Fig.?2,?an?AMD?treatment?systemis?mainly?composed?of?5?units.?They?are?the?iron?removal?unit(1,?2,?3),?sulfate?reduction?unit?(4,?5,6),?sulfur?recovery?unit(7,8,?9),?manganese?removal?unit?(10,?11,?12)?and?endpurification?unit(13,?14,?15)?successively.?In?order?to?achievea?good?separation?and?recovery?effect,?each?unit?is?equippedwith?a?reaction?tank,?flocculation?tank?and?sedimentation?tank.All?equipment?is?distributed?from?left?to?right,?and?the?heightdifference?is?used?to?ensure?the?order?of?the?water?in?and?outof?each?process.3. Results
When?AMD?flowed?through?this?system,?firstly,?in?theiron?precipitation?unit,?Fe2+?was?oxidized?to?Fe3+?by?aerationand?hydrogen?peroxide?oxidation,?and?after?adjusting?the?pHvalue?of?the?drainage,?Fe3+?in?the?solution?formed?a?precipitateof?Fe(OH)3,?which?is?removed?by?flocculation?andprecipitation?separation.
AMDO2 and H2O2SRBO2 and SOBO2 and MOBActivesludgeMineral materialIronprecipitationunitSulfatereduction unitSulfur recycleunitManganeseremoval unitDeeppurification unitEnffluentIron-richsedimentCoppersulphide-richsedimentSulfur-richsedimentManganese-richsediment?
Fig. 1.???Schematic?diagram?of?the?acid?mine?drainage?treatment?sys-tem.
?
?*?Corresponding?author:?E-mail address:?tankeyan2017@163.com?(Ke-Yan?Tan).
?
doi:10.31035/cg2018112
2096-5192/??2019?China?Geology?Editorial?Office.
In?the?next?procedure,?the?release?of?sulfate-reducingbacteria?(SRB)?in?the?sulfate?oxidation?tank?reduced?SO42??toS2??in?wastewater?producing?CuS?with?Cu2+,?which?reachedan?object?to?remove?Cu2+?and?some?SO42??in?water?byflocculation?and?precipitation.
After?that,?adding?sulfur?oxidizing?bacteria?(SOB)?in?thesulfur?oxidation?tank,?oxidizing?S2??to?elemental?S?in?thesulfur?oxidation?tank?by?aeration?and?bacteria?action,?andproduced?S?was?removed?from?the?water?by?flocculationprecipitation.
Then,?aerobic?and?releasing?manganese?oxidizing?bacteriain?the?manganese?oxidation?tank?can?oxidize?Mn2+?in?thewastewater?to?insoluble?high-valence?manganese,?and?removeMn2+?in?the?wastewater?by?flocculation?and?sedimentation.
A mine drainage treatment system for AMD in remediation of metal sulfide mines - 论文
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)
![](/skin/haowen/images/icon_star.png)