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Mag:-.a4= nTVITa:' I.L'MN AT NUM
mm4vater 1.26 611,J;AN:i.
a haying 00,4ium eemimftli oatio at. 1 a r:;00r valityt
an& a .t..er? Of Wac,rAe. goad uat; a olaiDm ckwixaM Ax0d
Yt5A4, tWO brionr
i at prem, abstractioa hemei is detcad alVe,!:g..t -1 put
.Thr ftftre ab-' .Altm tha taLt
ig5Now .r4hen
wium 512
A4
3,00
omIrverf
303. Cal:am
fed
30 AMSATITI„:
01 Une
Uge ef at
ztudo 1A25.,,CW
30
4o r;;;J'Ai- TotAl ar,0
50
60
nramealotz
oWnv tha Laoalt ol• Nkedu
imc,maanay
=O.
3,k':ildt tha mrt1,4 z'ate,,, of.
cweolopment ane at Nobn
3...opto,,,fett
5, iry,2,4 ; th: =an x1.1..ad to tz low
of tQt-er LY.1
lea to PiPt
i.,-;44,70.1.0n Of , ana at
the ftua] ow,:gra oaline , addititn. g'=C VV:
the tA7
5:umnavigs
war. OW,"-;e, reww.Paldatiol= to mkt An
amko
Lwata mand.-torvm to
200 ft thick and 14
ffediN,mta, ottooted t6
%ore ig 1,s. data r.sno5onaft. wagmter
Valloy$,
zuppn.1-A
144100q.41 , txto
Of oat*oics exohgla..- , t=1: tyylif=,
Oenerany Ilf,e v.otqfkiz ,,?-itioE.1,0. .::0'.-:n , .,:i !;4!:.1”.'zi,,;.1s11 ,
.iirmility..va, .7. ..*d on ope..oi-n4:; ,,::: ity a,i,,:, 9 4C,C ad /ft, :7,7e‹.:.:
Itabai oT
_,fir at. ra w., and yiolet vla Int,bably d poi**
Atm *Vim arnleOg va.T.Y,y gram U,4.- ham 700
ft, M/3-z %many mv?
aft eftw .01mr withift a ohtA: , :?4ftlx4 ;;Ize
M6md
part co,- 8tunscr,- qugai,tf,: iake
imr had alraa67 t.?-41:1&4
a'Z'om FOruaryq (G/0 512)44 At thg? th
W6Itue) ftrthm,,, sm*:1:z viern onlIeotoa frnmm tha
A'am.arsim duftn6: n'anl- r 1972 (' 560) et. 110
ovo tho ztuay anetmon*
fmm tho outlei=
vad* tot 164.44
t_th Ivon mangan&ze and min..1.* 0.2 the walym a,Y4'..4A given
Appmfaix: 1 we ftmarlot1 fto a tvilint ('.gig4 2) aaa mar.
(ngoo 3 and 6) at 1g25 0000 bv.400ial wem raft&
exoept X207. tho mAjor anion and gtbdi
ft mmdtg. ax,m on
135, at L51,..0, to the Ttabtl have a, mive
tleAg (*Ulm ia -4=*fai;
thdoo to the tro.t1-4 ar Ngeml r.Y.f
Tha div.A.MJv liao ftftg -oaat,,,Ogiut aPrZtaielY 'ne
hendqvarters to z.itm
302 alumulr - v.12 eicAeA
jat'Aat aqaftrzo'amm
Pigo o
th
▪
ugt-, WWW,
te T*Lwat
minenIize
▪
to
tthe dor41214.„-ot'4',
33 NIP g ne1 aeV010Pw'
6f me:10 e4 p.ropotiomf..
aro ntme0. ,
s elo. ou t trilinearga 01184J 2) ana the (gmae
wnpagitiOlk found a % the dige ot vaI10y‹, the.
diffeweYaloa.Wswthlo t-T. that of the lwAh.
4g
ara
f AYth aVO
71,,w taAk an. flow from
2t00. avdA,
thn tq '4000 gall m. tank at
density heADint.::. iE cravi
thb ,:!:sto Vb. r:...e::Tmett is carried 0.ut, en t.evo
data na.. give in Ag., To
,-. - -.11tAte, from D.44. exA Ane ftamthek::: POint• into the
tato 2 %Apple ucx tAen ft-cm tawer
to t -'ng
:ftlev RDI(q n490
%o a CMG,
7 .:::.CA,',.''A -4r8voLtrod Ceig 2) z.7.4 the
inkweao n'om t.101 and D44 tvaals Ai 78 e'a,sest, wdtea, it$ in
that
.f;n long are OneetAVO and in. terms of
a x4Of
aceptaTZIKr gim kr the 40,1-1 1:1U
J'Omen David,% az0 D65 , tte6 si2)
(40E EEk Lam ifAUs
-ems tourmov
3311 at 1V403 f;0. at A1714
the. potAnitY rpm Aest)0
aIcf1m4 oohl mderat Xc.2 ft.tw
is the iewa4 3C
cr.: eAor vwdat:I.J.on mi,dium is um,4 6/ v (4178 tts46 11, 0P
oalit .SOP C.1.;.deinget
..iiih
• iron ;1f:-.J,T; oazift.c.
iS :tem: 042 that iron
rg
0* htating FA? eaam:f
Tiauaa 8.108ging piptso fowA
the higb. rye ts L
_(. 1rittnt* ' liv4t0 of -po
Atr in aDlo3 lc V ppiy,-,, t 'AJ.:42t Qr
0:e 45 pjx.p thzs
Aroe X'wom ptelUt
borephole '
give
id0 ppm , 0*5 In 4. -
aovation an ta4to
,
•
aloe has the hiehet e 044 1-:!
,1 C1_7 than 0,1,L w,„H44'6 givo C.4,1 ppm eAA th0 f e AbOW
affl 0i,nzt clv.=a0los tUe mter :Dam", :;,hayz. 00Zf A e
ctritag mease04:46 1w the nixe oavle
mad atin
pre.
me. net
k-raualm: r4a1:.:J1 laundry am. tittik;o eb:.n p
the :Aowth baglteriA4, Ta obtain a o s6 qufatty this vahle bt
"4) , a Q*1 ppm or even 0005 Pre.
Zin‹g in the 1 - lose bot
iv the Wxo&
•
At:* t0 with . tho
tWar. " the
It ia sugjostea therefore that ace is nace Of *xi inip bal'ohole/ oither
the- west et "tabu within the Ca,sdominant atne or at Vgaba itse120
kLe.S.IL10- 01401111142.&1110 Tho of a clalY -
low density housing area are high and mIine mtor °sours at X1146 l*aving 4R37,
029A342 and OM a alternative supplio04 Bsrehole Q237 im the nearest available
site and has a gooa ie/d. of 750 aph it is wh R similar °beam' eo*ocition to
the present supply at ?tabu but has a higher total lift (90B pp m) and ig a harder
water with Li silica and iron (20 pp) and thou of poorer quality.
Z042 and 129 at the A4D4M4308404 builaingo. are a/mi-t on the prasent pig
linemnd tIme pi aline costs would btu °hove They have lower total -Ngtlide# but
alec lower yielasj, and.a very hara watern0 Q129 also hn a nitrate valuez. of
45 Moo
Another alternative is Q3020 againv a Ca..Kg4100 water, Thiz.i a yoga
similar in chemistry although greater hardnezzo. to the oroaent Ugabu wurte and
has a end;yield of ii000 b* It has ra. hidhor iron centent Of 2,0 Wm* linter*.
tunately, a longer pipeline mould be needed. to bring this into the present eystem4
The iNtjOr problem with all these boreholes is their tilArd react 4 the
iron can be prooipitated out of the water from the four boreheassfl. Q237 is consi
derea bestl and could be pumpea straight to the tank at the low density area
with none sertoing gent before or after the tank&
5,2 91...tp.x.e.1,212,,..40.1414 Bert- bolo 1449 ligebn ca4 be disregardea
elm to its high CaDe03 Content and excessive nitrts (29 ppm)t aternativeo
ulteo with low pipeline coot would than be 14205 or 144034
roth of these atm have geed yields!, i4 50C gph and 1%200 spia$9. aad areater
yields uId. be obtained by deepening (as also with 1)44)4 Their ohatkistry is
similar to D44 particularly end probably all three tap the nano avitert which
may be ratahaVged from the Nyakamba stream,
If D444 A17 W205 and 111103 were all used v. a total yield on the basin of
pumping toast could be as sueh cm 0,1 pgdm.-zoffioiont for a population of 21000
at a consumption rate of 4 1:1-, /head or two to four timsa as may :people n the
high density housing arm, It in unlikely that such a large Dupply wcul6 be
requiredt and it would only be noosscary to utilize. either W205 or 1111030
MIUre ht aisoest
txtent oAlroi Ult ,
q.7te ,vvei aw3:14: rezdvtd In thr.!..
an aaditiongl th(oo fitt*..1.1
t D44 locAtia
Sim faYad. Geg; -At:54N esal(f.i...n 6
20 nm. arid bitwacnate to !:90 1966 p.0 t
Plaa be'l'oro Xow demaity 1101. have to
A 1?.Qt imn in. the
At Itgaba oo,:m tho 7 1MtdV ic- the
was,y hari 1.1a R..:oczraU:
Oxvmdm:01' it4 of lover:, ;:.!:uaIi7 a.-:4 the
toe --atid and the ivz
The 6V,,:t rIlling aney,
o ptmp 1m a wge.vb-ed
1=.." N342) pft.mta le2.; 5.1.istalledtc.
Mad 6:11W cope. vtth
44 pmapWs 405 ad'forf:
ibriration. of, a mativio izatmace.
Co be attmvimd. by proporlx 09...a pulping t..2.
:ilAd& MAO; bo AAainee de6l*nige h, st
4s;•6• v,--
r-.5.41e of conaiti6E aininOu
punpi2v.;