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OFF RIVER STORAGE (ORS) : An Alternative for Urban River ... 1510-1530 Mr. Abdul karim Endut... ·...
Transcript of OFF RIVER STORAGE (ORS) : An Alternative for Urban River ... 1510-1530 Mr. Abdul karim Endut... ·...
WATER MALAYSIA 2015
OFF RIVER STORAGE (ORS) :
An Alternative for Urban River Raw Water Source:
Sungai Labu Water Treatment Plant Experience
Haji Abdul Karim bin Endut
23rd April 2015
1
Content of Presentation
1
2 Sungai Labu Water Supply Scheme
3
Raw Water Resources
4 Operational Results
2
Off River Storage (ORS)
5 Conclusions
Raw Water Resources for Portable Water
- MWIG 2014
3
82%
17%1%
Direct
Abstraction
from River
Storage Dam
(Direct)
Groundwater
Potential Interruptions of Raw Water Resources for treatment
4
(1) Polluted Source
- Oil / Diesel / Chemical
- Industrial waste
(2) Deterioration of Quality
- Development upstream of the intake
(3) Extreme Whether
- Heavy rain (high turbidity)
- Drought (less dilution)
Recent Treatment Plant Interruptions due to Raw Water Pollution
5
Sungai Labu Water Supply Scheme
3
Raw Water Resources
4 Operational Results
6
Off River Storage (ORS)
5 Conclusions
2
1
7
• Dedicated water treatment plant for KLIA.
• Treatment Plant capacity 105MLD.
• Construction completed in 2011 by Federal Government.
• Operations and Maintenance by Konsortium Air Selangor
(KASB) since June 2012 under Service License.
Sungai Labu Water Supply Scheme - General
8
Sungai Labu Water Supply Scheme - Location
Sungai
Labu
WTP
Phase 3 (+5MLD)
Phase 1 (45MLD)
Phase 2 (+25MLD)
Phase 4 (+30MLD)
Sungai Labu Water Supply Scheme
* Raw Water Intake
* Off River Storage (ORS)
* Water Treatment Plant
IntakeORS
WTP
MAB
Reservoirs
10
Sungai Labu Water Supply Scheme - Overview
Major Components
Intake
River Gate 1200mm dia. MS Pipe 1.2km length from
Intake to ORS
Key Components:
• River Gates
• Intake chambers
• Raw Water pumps
• 1200 mm MS pipe to ORS
• Online Analysers
11
Sungai Labu – Raw Water Intake
Main Dam37m high
SpillwaySaddle Dam C Saddle Dam B Saddle Dam A
FSL = 45mRL9.3 MCM Active Storage
1200mm dia. MS Pipe 1.2km length from
Intake to ORS
Sungai Labu - Off River Storage (ORS)
ORS
WTP
WTP Facts Sheets:
• Construction completed end 2011
• Plant Capacity 105 MLD
• Process with DAF system
13
Sungai Labu Water Treatment Plant
Sungai Labu Water Supply Scheme2
Raw Water Resources
4 Operational Results
14
Off River Storage (ORS)
5 Conclusions
3
1
15
Total Storage 10.6 MCM
Live Storage 9.3 MCM
Lake Area 52 Ha
Full Storage Level 45m LSD
Minimum Operating
Level
22m LSD
No. of Saddle dams 3 nos
Commissioned September 2011
Off River Storage (ORS)
105 Mld – 90 Days
80 Mld – 115 Days
55 Mld – 170 Days
ORS - Storage Capacity
ORS – Operating Rule Curve
18
• To ensure continuous and uninterrupted supply of raw water
available for treatment.
• To store 90 days storage of raw water for 105MLD treatment
capacity.
• To improve raw water quality (NH3, turbidity, colour, etc.).
• To maintain raw water quality entering the treatment plant.
ORS – Key Performance Indicators
19
ORS Challenges: (1) Urbanization
Urbanized and Industrialized areas upstream of intake
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
Ammonia Level at Sg. Labu Raw Water Intake 2014
Raw Water Ammonia (River) Ammonia Standard MOH (>1.5 mg/L)
20
Am
mo
nia
(m
g/L
)A
mm
on
ia (
mg
/L)
Ammonia Standard
MOH (< 1.5 mg/L)
ORS Challenges – (2) High Ammonia in the river
21
ORS Challenges : (3) Low Flow Periods
Sand intrusions
Low water level
22
ORS Challenges – (4) High Flow Periods
Sand intrusions
Large debris at river gates
Sungai Labu Water Supply Scheme2
Raw Water Resources
3
Operational Results
23
Off River Storage (ORS)
5 Conclusions
4
1
24
Sungai Labu Sanitary Survey - Map
25
Operational Target – Highest Standards
Parameters MOH SPAN KPI
Turbidity
Colour
pH
Aluminium
Ferum
Mangenese
Residual Chlorine
< 5 NTU
< 15 HU
6.5 ~ 9.0
< 0.2 mg/L
< 0.3 mg/L
< 0.1 mg/L
0.2 – 5.0 mg/L
< 0.4 NTU
< 5 HU
7.0 ~ 8.5
< 0.1 mg/L
< 0.1 mg/L
< 0.05 mg/L
1.5 – 2.5mg/L
90%
90%
90%
90%
90%
90%
98.2%
Parameters MOH
Standards
MOH QAP
(Others)
SPAN KPI @
Sg Labu
Turbidity
Residual Chlorine
E-Coli
Residual Chlorine +
E-Coli
Aluminium
< 5 NTU
0.2~5.0 mg/L
Nil in 100 ml
1.5~2.5 mg/L
and No E Coli in
100 ml
< 0.2 mg/L
98.0 %
97.7 %
99.6 %
99.8 %
89.8 %
100 %
100 %
99.8 %
99.9 %
100 %
• KPIs for Treated water
quality beyond MOH
Standards
• Mandatory compliance
to MOH Standards.
15.00
20.00
25.00
30.00
35.00
40.00
45.00
50.00
ORS Level (mODL )
Jan 2013 - Dec 2013 Jun 2012 - Dec 2012 Jan 2014 - Dec 2014
Jan 2015 - Dec 2015 Critical Level Full Supply Level
Full Supply Level @ 45m ODL
Critical Level 22m ODL
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20141st Jan: 43.2m
31st Dec: 34.4m
20131st Jan: 44.9m
31st Dec: 43.1m
20121st Jun : 38.8m
31st Dec : 44.9m
20151st Jan : 34.5m
31st March : 39.7m
Operational Results – (1) ORS Level (June 2012 – March 2015)
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
180.00
Treated Water Production vs Raw Water Pumping 2014
Treated Water Production Raw Water Pump Design Capacity
Raw Water Pumping (ORSR) Treated Water pump Design Capacity
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Raw Water Pump Design Capacity @ 140 MLD
Treated Water Pump Design Capacity @ 105 MLD
Pu
mp
ing
Ca
pa
city
(M
LD)
Operational Results – (2) Uninterrupted WTP
28
Operational Results – (3) Ammonia Reduction
DATE
LOCATION
River
Intake
ORS
Inlet
Main
damSaddle A Saddle B Saddle C Tower
WTP
Inlet
21 June 14 2.95 2.34 0.11 0.03 0.06 0.11 0.04 0.05
15 July 14 2.28 2.10 0.04 0.05 0.04 0.02 0.03 0.05
03 Aug 14 2.98 2.76 0.08 0.14 0.10 0.05 0.03 0.04
13 Sept 14 2.10 2.07 0.07 0.06 0.14 0.12 0.03 0.08
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0.0
0
0.1
0
0.2
0
0.3
0
0.4
0
0.5
0
0.6
0
0.7
0
0.8
0
26 June 12
19 July 12
30 Aug 12
20 Sept 12
15 Oct 12
23 Nov 12
14 Dec 12
11 Jan 13
07 Feb 13
20 March 13
19 April 13
31 May 13
27 June 13
19 July 13
14 Aug 13
11 Sept 13
08 Oct 13
13 Nov 13
05 Dec 13
16 Jan 14
11 Feb 14
10 March 14
08 April 14
20 May 14
13 June 14
10 July 14
08 Aug 14
4 Sept 14
1 Oct 14
17 Nov 14
10 Dec 14
08 Jan 15
10 Feb 15
06 March 15
TURBIDITY (NTU)
DA
TE
TR
EA
TE
D W
AT
ER
TU
RB
IDIT
Y JU
NE
20
12
–M
AR
CH
20
15
(IND
EP
EN
DE
NT
LAB
OR
AT
OR
Y D
ATA
)
< 0
.4 N
TU
SP
AN
KP
I for
Tu
rbid
ity
< 0
.4 N
TU
Op
era
tion
al R
esu
lts –(4
) Hig
he
st Sta
nd
ard
s
0.00
0.05
0.10
0.15
0.20
0.25
Alu
min
ium
Co
nce
ntr
ati
on
(m
g/L
)
Month
Aluminium in Treated Water vs MOH Standard 2014 - 2015
Aluminium Standard MOH (<0.2 mg/L)
Operational Results – (5) Highest Standards
31
Parameters Quality
Target
QAP
Target
2012
(Jun – Dec)
2013
(Jan – Dec)
2014
(Jan - Dec)
2015
(Jan – Mar)
Turbidity
Colour
pH
Aluminium
Ferum
Mangenese
Residual Chlorine
Fluoride
Ammonia
E. Coli
Residual Chlorine +
E. Coli
Total Tests
< 0.4 NTU
< 5 HU
7.0 – 8.5
< 0.1 mg/L
< 0.1 mg/L
< 0.05 mg/L
1.5 - 2.5 mg/L
0.4 - 0.6 mg/L
< 1.5 mg/L
Nil in 100 ml
1.5~2.5 mg/L
and No E Coli in
100 ml
-
90 %
90 %
90 %
90 %
90 %
90 %
98.2 %
98 %
100 %
99.8 %
99.9%
-
99.30 %
99.58 %
99.34 %
99.96 %
99.84 %
100.00 %
99.84 %
99.88 %
100.00 %
100.00 %
100.00 %
17,762
99.68 %
99.45 %
99.66 %
100.00 %
100.00 %
100.00 %
99.93 %
99.86 %
100.00 %
100.00 %
100.00 %
30,295
99.95 %
99.98 %
99.91 %
100.00 %
100.00 %
100.00 %
99.86 %
99.93 %
100.00 %
100.00 %
100.00 %
30,295
100.00 %
100.00 %
99.91 %
100.00 %
100.00 %
100.00 %
99.44 %
100.00 %
100.00 %
100.00 %
100.00 %
7,470
Operational Results - (6) Highest Standards
Sungai Labu Water Supply Scheme2
Raw Water Resources
4 Operational Results
32
Off River Storage (ORS)3
Conclusions5
1
33
• ORS has ensured uninterrupted treatment plant despite
deterioration in quality and quantity of water in the river.
• Storage capacity of 90 days is sufficient during the low flow
periods to meet the demand.
• Significant improvement in raw water quality during storage.
• Stable water quality from ORS facilitates treatment plant to
produce high quality treated water.
Conclusions