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

26

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

27

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

29

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

THANK YOU

34

Email: abdkarim@kassb.com.my