Rum Jungle Mine Rehabilitation : Treatment of Whites & the Intermediate & Opencut Waters.
E-Publications; E-Books; PublicationNT; Report ; 7/1986
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Dept. of Mines and Energy
Report ; 7/1986
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Technical Report WRD86007 Viewed at 15:07:26 on 29/07/2010 Page 6 of 35. I 1 <I :1 cl I I' ,I.,' > LI ~J .1 -I .1 3 W.AT"2? TRE;'.TMENT 3.1 White~ Open Cot The ;:-aw water ",'2S pumpec fro=n the cpen C'J.t and the. pH raised t.o ccout 9 throu<]h addition of hydrated lime, th1;S preciFitating polluta~t oeta~s as their nec~ssary to e;;s~re the to an acceptahle level. hyc.=a-ced oxides. Treatr;:er:.t remo',;"al of mar.;anese fro~ to pH 9 was SCi1Jtion After floculation, sedi~entaticn a~~ dewatering, consisting mainly of hy~~ated metal oxides) the sliJdge anc ca1cium sulohate was buried in clay lined pits. ~eturned to the open c~t. density differe~ce ~reatea wa7er and untreated water was s~fficie~t to preve~t ~ixi~q wnen the treated ~a~er was retu=ned co the Oper:. Cut. tr.eir 'Thus a tr-ea ted ',,'-2 te= layer ~as estab:.is~ed C~ top cf c~treated water in the Open C~t. Ini~iaily the treated water laver was of low ~~. This we.s due to the mixing of tte trea~ed ~ater ~it~ about ? metres of r2~ water curing t~e situ-a,=icn :o~~ation of the ~reatd was resedied by the dir~ct additior: ~o th~ ope~cut along wit~ the treated wat2r. 1a1'e:-. of l:.:me ':'h~s slu;:-:-y ?rcZ1tl!~Ci1t con'...'U0nccc1 en 11/8/"-84 and W5.S cQPpletec!. on 28/9./35. c 0 t) ,! The volume of water trea~ed was 2.1 x 10 ~; 75,570 ~on~es of sh:dge were pro(hlcec contair:ing a!1 a;,;ercge 0': 39.4! solids. The chemical analysis of a sl~dge sa~ple is Table .~.4. s'!:J. (l ',.,;:: in