identification of possible migration of contaminants in groundwater at a landfill – a case study...

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Journal of Environment and Earth Science www.iiste.org

ISSN 2224-3216 !a"er# ISSN 222$-%&4' (nline#

)ol. 3* No.10* 2%13

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Identification of Possible Migration of Contaminants in

Groundwater at a Landfill A Case Study of Oman

+ahad S. ,aawain1,hmed +. l-/utaisi21. 0enter for Environmental Studies and esearch 0ES#* Sultan aoos niversit5* +uscat (man

2. e"artment of 0ivil and rchitectural Engineering* Sultan aoos nviersit5* +uscat* (man E-mail of the corres"onding author7 msa8s9u.edu.om

AbstractIn this stud5 e:"lorator5 orehole drilling along with soil core sam"ling* chemical anal5sis* "ie;ometer

construction* field and laorator5 h5drochemical anal5ses and "um"ing test were a""lied.


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the road connecting ,ar=a and Na=hal. It covers an area of '% ha. Fandsca"e of this area is flat and crossed 5 awadi at one edge. ,ar=a landfill is also locaed in the mountainous region. @eologicall5* the stud5 location is

underlain 5 the alluvial de"osits of wadi alluvium and su recent alluvial fans and terraces. Near the landfill*

the de"th to water tale varies etween 6' to C% mgl. ater and >astewater Eaton et al.* 2%%$#.

2.3Pump test

!um" test was carried out in the newl5 drilled ore well.


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(:idation reduction "otential Eh# of the groundwater sam"les indicated reducing environment* which ma5"romote decreased reactions in this a9uifer. e"leted nitrate and sul"hate concentrations together with a smell of

h5drogen su""lied have een oserved during the sam"ling. hen the leachate mi:ing with groundwater* dissolved organic matter will first remove the

dissolved o:5gen and nitrate followed 5 a large amount of 0(2out"ut Schwar; et al* 1&&'#. Dence* in the

dum"ing site* al=alinit5 would e antici"ated from two maGor sources* dissolution of 0(2 generated from

microiologicall5 mediated degradation of organic matter* and weathering of caronate minerals* "articularl5

calcite and dolomite. If the natural weathering of caronate minerals is res"onsile for al=alinit5 in thegroundwater* the water sam"les collected from the "ie;ometers should show more or less similar al=alinit5

concentrations since the distance etween the "ie;ometers are not so far. ,ut* !1 shows elevated al=alinit5 and

maGor ions with low "D and (


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seawater u"coning.

'! Conclusion

@roundwater sam"les were collected from the a9uifer that e:ists eneath ,ar=a dum"ing site using drilled

"ie;ometers and a "um"ing well. >ater sam"les were anal5;ed for inorganic* organic and iologicalcharacteri;ation. It was oserved that the well !1* which is close to the lagoons* com"rises increased

concentration of (KI!* holonic attriutes such as autonom5and coo"eration must have een integrated into its relevant com"onents. (KI! data in"ut and

conversion "rocesses* e:"loring the use of >(KI! in the other forms of laour-intensive manufacturing e.g.

flow-line "roduction and wor=-cell asseml5#* and attaching a costing framewor= to determine the s"ecific cost

of each resource or to hel" minimise the aggregate cost of "roduction.

(! Ac)nowledgement

.N. 2%%1#*Evaluation of groundwater and soil "ollution in a landfill area using

electrical resistivit5 imaging surve5O*Environmental anagement* 2'$#7 6$$-663.

u-u=ah* .* l-Bofahi* (. 2%%1#*


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9ualit5O* gricultural#ater anagement* $67 16&-2C'.+urad* ..* Brishnamurth5* .). 2%%4#* /actors controlling groundwater 9ualit5 in Eastern nited ra

Emirates7 a chemical and isoto"ic a""roachO* Journalof *ydrology &Amsterdam)* 2'67 22C - 23$.

+ac=* F C%.1 C2 6'.$ C%.6 C2.' $&.3 N


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List of ,igures

,igure !+a" shows the ,ar=a dum"ing site and locations of "ie;ometers !#* "um"ing well !># and trial "its

,igure "!@roundwater 9ualit5 in the newl5 drilled wells in ,ar=a dum"ing site.


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,igure $!)ariation of in situ"arameters during "um"ing test in the newl5 drilled well in ,ar=a dum"ing site.


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,igure (!)ariation in the maGor cations during "um"ing test in the newl5 drilled well in ,ar=a dum"ing site.


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,igure 1!)ariation in the trace metals during "um"ing test in the newl5 drilled well


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identification of possible migration of contaminants in groundwater at a landfill – a case study...

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