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Faculty of Engineering Civil Engineering Department ENCE530- Graduation project
2012-2013
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Olive Mill Waste Water Management By :
Wala’ Abd Allah (1081023 )
Samar Salameen(1081315)
Supervised by : Dr.Omar Zimmo
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IntroductionIn Palestine ,the problem of
untreated OMW discharge is urgent .
Several hundred thousands cubic meters of untreated W.W is discharged into open areas and cesspools .
The current project addresses this issue by relatively basic treatment scheme that can be implemented to olive mill sites for little cost with valuable end products.
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Olive mill by product
Olive oilOlive cake
Olive mill waste water
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Olive mill owners questionnaireMain Objectives
1. Olive presses distribution according to operational status, and level of automation.
2. Quantity of olive mill waste production of jeft and zebar.
3. Number of employees and the mill working hour.
4. Olive pressing costs.
5. Coverage area of the mill and additional available area for construction a treatment plant.
6. Olive mill waste water management level.
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Analysis of results
The majority of the olive-mills is located within the residential areas ,land areas ranges between 170-3000sqm.
38% of the olive mill has excess area around the facility.
The production of olive mills waste (zebar and jeft ) varied widely ,due presence of other competitors and variation in the amount of pressed olives
None of the surveyed mills implement a management plane for OMWW.
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Cont’dsurveyed olive mill locations
11%
89%
surveyed olive mill locations
olive mill located in urban areas
olive mill located in rural areas
83%
17%
olive mill waste disposal methodtight cesspits sewer system
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OMWW characterizations
Beitrema
Deristea Ellar Salfeet1 Salfeet 2
Nablus-0
50000
100000
150000
200000
250000
The concentration of COD for various region
Study region
CO
D(m
g/l
)
Beitrem
a
Deriste
aElla
r
Salfe
et1
Salfe
et 2
Nab
lus-
0
500
1000
1500
2000
2500
3000
The values of total ni-trogen for various re-
gion
Region
Tota
l N
itro
gen
(mg/l
)
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Beitrema
Deristea Ellar Salfeet1 Salfeet 2
Nablus-0
20000
40000
60000
80000
100000
The values of Fat Oil and Grease for various region
Region
Fat
Oil
and G
rease
Beitrema
Deristea Ellar Salfeet1 Salfeet 2
Nablus-0
20000
40000
60000
80000
100000
The values of Total dis-solved solid for various
region
RegionTota
l su
spended s
oli
d(m
g/l
)
Beitrema Deristea Ellar Salfeet1 Salfeet 2 Nablus-0
10000
20000
30000
40000
The values of Total sus-pended solid for various
region
Region
Tota
l su
spended s
oli
d (
mg/l
)
Beitrema Deristea Ellar Salfeet1 Salfeet 2 Nablus-4.454.5
4.554.6
4.654.7
4.754.8
4.85
The value of pH for various region
region
pH
valu
e
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Choice and laboratory scale evaluation of a biological treatment method for olive mill wastewater
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OMWW proposed treatment process
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Laboratory experimental setupPhase I:physical treatment (gravel filter)
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Phase II: Biological treatment
The performance of two systems had been evaluated :
Trickling filter system.
Activated sludge system
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Activated sludge system
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Trickling filter
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Color removal
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Composting
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Analysis of results
0 1 2 3 4 5 6 7 8 90
10
20
30
40
50
60
70
80
90
100
Time (hr)
rem
oval
eff
icie
ncy
%
Sand filter
TSS removal efficiency vs. Time
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Analysis of resultsTrickling filter
Activated sludge system
0 20 40 60 80 100 120 140 1600
200
400
600
800
1000
1200
time(hr)
CO
D(m
g/l)
0 20 40 60 80 100 120 140 1600
200
400
600
800
1000
1200
Time(hr)
CO
D(m
g/l
)
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Trickling filterC=C˳[f + (1-f) e^-kt]
K = 0.535
F1 = 0.249
F2 = 0.223
F3= 0.254
0 20 40 60 80 100 120 140 160 1800
200
400
600
800
1000
1200
actual COD
COD re-moval model
Time (hr)
CO
D(m
g/L
)
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Cont’d
Activated sludge system
K =0.3038
14
F1 =0.1810
05
F2 =0.2354
16
F3 =0.2198
05
0 20 40 60 80 100 120 140 160 1800
200
400
600
800
1000
1200
actual COD
COD re-moval model
Time(hr)
CO
D(m
g/l_
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ConclusionBecause the 3-phase system the dominant method for olive oil
extraction, very large amounts of liquid wastes is producing
every season.
None the olive mills implement a management plane for
OMWW.
This study shows olive mill waste was treated in circulating pond
/T.F system, with a K=0.535, or within the activated sludge
system with K=0.304.this suggesting strong treatment feasibility.
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T.F/recirculating pond system found to be more
applicable in the olive mill, this is because of low
operating cost, low labor skill requirement.
the treatment of mill waste stream can be carried out
at rural site by separation of the liquid from the solid,
solid is to be composted and the liquid to be treated by
a recirculating pond and trickling filter system.
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The proposed OMW treatment plant
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RecommendationsThe olive mill waste disposal problem has two levels, the
management level and the other is the technical level.
A well management plan has to be established, focusing on the
following points:
cooperation between authorities ,have to be achieved in
a manner to enforce OMWW treatment before discharge it
Providing training courses for the farmer and the olive mill
owner ,to increase the level of awareness of the significant
impact of the problem
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The back washing of the gravel filter is hard and high water consuming process.
The phytotoxicity of the treated OMWW has to be determined precisely to grantee the Consistency with the Palestinians standard for irrigation water.
The olive washing water could be screened and then used in the treatment plant for dilution purposes.
Initial Feasibility study of the project must be established. Also centralized decentralized treatment option must be considered.
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Any questions ?!
Thank You