RO/NF

UF

MBR

ChemicalsC A S E S T U DY
RO | UF | MBR |Drinking Water
Jakarta, Indonesia

Toray's Integrated Membrane System (IMS) Alleviates Pressures ofIndonesia's Rapid Urbanization
Table 1 — Quick Facts
Feed source

Surface water

Treatment scheme

DAF Submerged UF RO

System capacity

14,000 m3/day

Membrane type

UFRO

HSU-1515

TM720D-400

PVDF

Polyamide

20 (215)37 (400)

No. of skids

34

System design

152 modules per rack

20:11 (7M)

System recovery

90%

75%

ModelMembrane material
22

Active area [m (ft )]BACKGROUND
Jakarta is one of the fastest-growing metropolises in the world.
The World Bank estimated that Indonesia's urban population
increased at an average annual rate of 4.1 percent between 2000
and 2010, and the greater Jakarta region added 7 million people
during this period (The World Bank 2016). As a result, about twothirds of Jakarta's population is expected to migrate to suburbs
like Pantai Indah Kapuk (PIK).
Situated in northern Jakarta, PIK has become a bustling region thatis notable for gated communities, numerous tourist attractions, andbusinesses to support the thriving population. However, as Jakarta
continues to grow, the environmental challenges arising from rapid
urbanization often outweigh the solutions available to address them.

End usePotable use

Commissioned

Aug 2018

manufacturer's expertise. The heightened deterioration of water
quality and increased demand for clean water, PIK's private utility wasforced to look for improved measures. PIK already had installations
with Toray UF and RO products and once again sought out Toray's
expertise.
SOLUTIONURBANIZATION & WATER QUALITY
A network of 13 rivers that pass through Jakarta serves as its
primary water supply. However, as the city does not have anadequate drainage and sanitation system, these rivers havebecome a channel for domestic and industrial sewage. E. colicontamination was detected in more than 50 percent of shallow
wells, and more than 10 percent of wells contained iron andmanganese (Apip 2015). Turbidity and Total Suspended Solids(TSS) fluctuated anywhere between <100 ppm and as high as
1,000 ppm during the dry seasons. Furthermore, excessive landdevelopment has contributed to severe flooding, soil subsidence,and seawater intrusion, all factors that cause sur face andgroundwater contamination.
A conventional treatment scheme was in operation but would nolonger be able to produce water quality sufficient to sustain healthy
standards of living. PIK's water utility had previous installations using
Toray's UF and RO technologies and would seek out the membrane

03-ID-MB1MB2-Jakarta-202108

Technical evaluations revealed that two treatment objectives
would be required to reduce the high levels of BOD (BiochemicalOxygen Demand) and TSS resulting from the sewage in thefeed. Secondly, as PIK is situated close to the ocean, the secondtreatment line would reduce salinity ( TDS). The solution tomeet both objectives would be Toray's Integrated Membrane
System (IMS) design incorporating Toray's submerged PVDF
ultrafiltration (UF) membrane modules followed by highrejection reverse osmosis (RO) membranes. The low-pressure UF
modules provide:•Ease of operation.

•High mechanical and chemical durability for effective
separation of target contaminants.

•Protection of the downstream RO.

The RO elements would polish the UF filtrate and produce a
quality acceptable for potable use. Table 2 shows the treatedwater quality.

1 of 2Toray's Integrated Membrane System (IMS) Alleviates Pressures ofIndonesia's Rapid UrbanizationC A S E S T U DY
RO | UF | MBR |REFERENCES

Table 2 — Water Quality (temp. 29–32°C)
Item

UF feedRO permeate

TDS, mg/L

2,000–8,000<500

TSS, mg/L

100

<0.1

[1] "Indonesia's Urban Story." The World Bank Group. Jakarta, Indoneisa. June,
2016.
[2] Apip. Sagala, Saut AH. Pingping, Luo. "Overview of Jakarta Water-Related
Environmental Challenges." Water and Urban Initiative Working Paper Series,
Number 04. United Nations University. April 2015.
Submerged UF

Dissolved AirFiltration

Reservoir

UF filtrate

Feed water

RO permeate

High-rejection ROHP pump

Figure 2 (left): Submerged PVDF UF skid
Figure 3 (above): RO skids

TORAY INDUSTRIES, INC.
Head Office: Nihonbashi Mitsui Tower 24th Floor, 1-1, Nihonbashi-Muromachi 2 chome, Chuo-ku,
Tokyo, 103-8666, JAPANwww.water.toray+81 3 3245-4540

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All information presented herein is believed reliable and in accordance with accepted engineering practices. Toray makes nowarranties as to the completeness of this information. Users are responsible for evaluating individual product suitability forspecific applications. Toray assumes no liability whatsoever for any special, indirect or consequential damages arising from thesale, resale or misuse of its products. © 2021 Toray Industries, Inc. Subject to change without notice.
03-ID-MB1MB2-Jakarta-202108

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