RO/NF

UFMBRChemicals

C A S E S T U DY
RO | UF | MBR |Wastewater Treatment
Rayong, Chonburi
Thailand

Toray's Low-Fouling Reverse Osmosis Technology Keeps Replacement
Costs Down at Wastewater Reuse Plants in Thailand
BACKGROUND
The Amata Corporation is an industrial real estate developer
managing properties primarily in Thailand but also in Vietnam.
Between two business parks in Chonburi and Rayong, Thailand,
there are more than 500 factories and 1,100 manufacturers
operating at these sites, including Fortune 500 companies
such as Toyota, Nestle, BASF, and Sony. The continuous supplyof clean water is essential for sustaining these businesses andsurrounding communities.
Amata Water, a fully-owned subsidiary of Amata Corporation
Public Company Limited, manages water treatment anddistribution. Amata Water operates under the mission ofcontinually developing products and services for the tenants of
Amata while providing sufficient and sustainable water resources,
purification systems, and wastewater treatment systems, with aparticular aim toward environmental conservation.

Bangkok
Chon Buri
RayongFigure 1: Plant locations in Thailand

The designated engineering firm and Build-Operate-Transfer (BOT)
contractor for the water treatment plants (WTP) at both Rayong andChonburi estates is TESCO (www.tescoenvigroup.com), who evaluated
Toray's reverse osmosis (RO) membrane technologies to improve thewater quality at the Amata estates.
Table 1 — Quick Facts

PRODUCT SELECTION

Plant location

TESCO conducted pilot tests of Toray's low-fouling RO membraneelements alongside products by other leading RO membrane
manufacturers. Since the feed water was tertiary wastewatercontaining various organic and inorganic contaminants withhigh fouling potential, low-fouling membrane technology waspreferred.
The pilot tests revealed that Toray RO membrane did not requirea clean-in-place (CIP) for an extended period (2–3 months forAMATA), which would lead to selecting Toray, including the timely
availability of regional technical support.

RayongChonburi

Feed source

Tertiary wastewater

Treatment

UF > RO

Membrane model

TML20D-400

Membrane typeLow-fouling polyamide
37 m2 (400 ft2)

Active area
System capacity

9,360 m3/d

Elements/train

7,000 m3/d
6M

SOLUTION

End useIndustrial process and grey water

For two-thirds of all wastewater, the WTP's at AMATA uses Sequencing
Batch Reactors with Biological Aerated Filtration technology,
while conventional activated sludge treats the remaining water.
Ultrafiltration (UF) treats seventy percent of the tertiary wastewaterto reduce turbidity, followed by Toray's low-fouling RO membrane toreduce total dissolved solids (TDS) before being resupplied to nearby
factories. The remaining thirty percent of the treated wastewater isused in the estates for irrigation of common areas and golf courses andcooling processes at the Amata B. Grimm power plants.

Commissioned

Jan 201203-TH-MB1-Amata-202108

1 of 2

Dec 2015

C A S E S T U DY
RO | UF | MBR |Toray's Low-Fouling Reverse Osmosis Technology Keeps Replacement
Costs Down at Wastewater Reuse Plants in Thailand

KEY RESULT
Using Toray's low-fouling polyamide composite membranes, theWTPs at the AMATA estates operated the RO systems for morethan five years before requiring replacement of the RO elements.
This low replacement rate has saved the end-user considerable
operational and capital costs and is one of the most successful
wastewater reuse plants in Thailand.

Figure 2: RO permeate

Figure 3 : RO skid

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

LinkedInYouTubeMarks designated with a ™ or ® are trademarks of Toray Industries, Inc.
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-TH-MB1-Amata-202108

2 of 2