Toray HFUG Series User manual

“HFUG Series”
[HFUG-B2315AN (type AN)]
Instruction
Manual
Instruction
Manual
Toray UF
Last updated September 2022
06-G-MB2-HFUG-B2315AN-220930

Instruction Manual
Toray UF
06-G-MB2-HFUG-B2315AN-220930
Notice
The data and information contained in this document are based upon rigorous technical
testing by Toray, and is to the best of our knowledge reliable. Toray cannot control design
and operating conditions, and consequently Toray does not assume any liability for results
obtained or damage incurred through the application of the information provided herein.
No liability, warranty or guarantee of nal product performance by Toray is implied by the
information provided in this document.
This manual supersedes all previous versions. Technical modication of products or
production technology may necessitate changes to information in this manual without prior
notice. Please verify that your version of the manual is the latest version available by either
contacting Toray, or checking online at www.water.toray.
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Instruction Manual
Toray UF
06-G-MB2-HFUG-B2315AN-220930
Contact Information
Toray Industries, Inc. — UF & MBR Membrane Products Department (Global Headquarters)
Nihonbashi Mitsui Tower, 1-1, Nihonbashi-Muromachi 2 chome, Chuo-ku, Tokyo, 103-8666
Japan
Tel: [phone] Fax: [phone]
Toray Membrane USA, Inc. (TMUS)
13435 Danielson Street, Poway, California 92064 USA
Tel: [phone] Fax: [phone]
Toray Membrane Europe AG (TMEU)
Grabenackerstrasse 8b, Muenchenstein 1 CH-4142, Switzerland
Tel: [phone] Fax: [phone] E-mail: [e-mail]
Toray Asia Pte. Ltd. (TAS)
111 Somerset Road, #14-22 - #14-27, Singapore 238164, Republic of Singapore
Tel: [phone] Fax: [phone]
Toray BlueStar Membrane Co., Ltd. (TBMC)
Zone B, Tianzhu Airport Industrial Zone, Beijing 101318, China
Tel: [phone] Fax: [phone]
Toray Membrane Middle East LLC (TMME)
PO Box 20279, Dammam 31952, Kingdom of Saudi Arabia
Tel: [phone] Fax: [phone]
Toray Advanced Materials Korea Inc. (TAK)
Korea Toray R&D Center 7, Magokdonng-ro 10-gil, Gangseo-gu, Seoul 07790, Republic of
Korea
Tel: [phone] Fax: [phone]
website: www.water.toray

TORAY UF
Instruction Manual 06-G-MB2-HFUG-B2315AN-220930
TABLE OF CONTENTS
I. Introduction ................................................................................................................... 1
1. Characteristics of Toray "HFUG series" Membrane Module......................................... 1
2. Applications of Toray "HFUG series" Membrane Module ............................................. 2
II. For Your Safety ............................................................................................................. 3
1. Safety Instruction for Unpacking and Installation ......................................................... 4
2. Safety Instruction for Filtration Operation .................................................................... 6
3. Safety Instruction for Chemical Cleaning..................................................................... 8
4. Safety Instruction for Disposal..................................................................................... 9
5. Warranty Claims.........................................................................................................10
6. Warranty Policy ..........................................................................................................11
III. Specifications of Toray “HFUG Series” Membrane Module...........................................12
IV. Configuration of Toray “HFUG Series” Membrane Module............................................15
V. Installation....................................................................................................................17
VI. Operation .....................................................................................................................20
1. Filtration .....................................................................................................................20
2. Backwash and Air-scrubbing ......................................................................................22
3. Toray Maintenance Cleaning ......................................................................................24
4. Basic Trans-Membrane Pressure Calculation.............................................................27
5. Temperature Correction Factor...................................................................................28
6. Performance Recording .............................................................................................29
VII. Chemical Cleaning .......................................................................................................30
VIII. Storage of Membrane Module ......................................................................................34
1. Storage of New Membrane Module............................................................................34
2. Storage of Membrane Module after Use.....................................................................34
3. Replace Preservative Chemical .................................................................................35

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I. Introduction
Toray PVDF Hollow Fiber Membrane Module "HFUG series" is a pressurized hollow fiber UF
(Ultra Filtration) membrane module developed with polymer science and membrane fabrication
technologies accumulated over decades of successful membrane manufacturing at Toray
Industries, Inc.
The membrane material is Polyvinylidene fluoride (PVDF). The nominal pore size of the
membrane is 0.01 micrometers.
The module, which is permanently potted in its casing, is pressure-driven which provides filtrate
quality equal to submerged modules, while offering greater TMP range for more flexible plant
operation. Maximum operating pressure is 300 kPa (43.5 psi). The flow direction is outside-in,
which is more suitable for higher turbidity water treatment because of the air-scrubbing
effectiveness. Additionally, outside-in modules can remove suspended solids more effectively
at higher recovery rates compared to inside-out fibers.
1. Characteristics of Toray "HFUG series" Membrane Module
(1) High Filtration Flux
HFUG series provides high filtration flux and stable operation for the filtration of various
raw water sources. The membrane is made with a special spinning method, which enables
high permeability and high fouling resistance.
(2) Excellent Water Quality
HFUG series provides very good water quality for the filtrate, extremely low turbidity since
the membrane has 0.01 micrometers nominal pore size. HFUG series is recommended to
be applied to the tertiary treatment of sewage and RO pretreatment in desalination.
(3) High Mechanical Strength
The membrane of HFUG series has very high mechanical strength because it is made of
PVDF with the special spinning method developed by Toray. HFUG series provides high
integrity and durability under recommended operating conditions.
(4) High Chemical Durability
The membrane material of HFUG series is PVDF, which allows to clean the membrane
with high concentrations of chlorine and with high concentrations of acid resulting in better
cleaning and longer sustainable membrane flux rates.

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2. Applications of Toray "HFUG series" Membrane Module
Drinking Water Production
Tertiary Treatment
RO Pretreatment
Industrial Water Production
Reuse of Industrial Wastewater

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II. For Your Safety
Please be sure to read and follow the instructions below before using HFUG series. This
manual should be retained for future reference.
Follow the safety precautions as they are intended to protect operators and equipment
from various risks such as physical harm and/or property damage. The following table
shows a level of potential risk for each indicated symbol.
This symbol indicates an imminent hazardous situation which
will result in serious injury or death when the instruction is not
observed.
This symbol indicates a potentially hazardous situation which
will result in serious injury or death when the instruction is not
observed.
This symbol indicates a potentially hazardous situation which
might result in injury or property damage when the instruction
is not observed.
The following table explains the information to be noted.
“Prohibited”
This symbol indicates a prohibited action or procedure.
“Instruction”
This symbol indicates an important action or procedure which
has to be taken without fail.
Prohibited
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1. Safety Instruction for Unpacking and Installation
Be sure to wear safety gears such as rubber gloves and safety glasses for
unpacking. The membrane is packaged in sodium hypochlorite solution (Max. 200
mg/L as Cl2). If the solution happens to splash onto the skin, wash the affected part
with running water. If the solution happens to get in the eyes or mouth, wash the
affected part with sufficient amounts of clean running water for more than 15
minutes and see the doctor immediately.
Be sure to wear safety gears such as a helmet and safety shoes to avoid injury due
to falling of related parts or equipment, such as module, etc.
The preservative solution should be drained out before using the modules. After
that, fill tap water or equivalent quality water into the modules to prevent the hollow
fiber membrane from drying out. Do not allow the modules to dry even for a few
hours.
The membrane modules should not be frozen.
Be careful not to damage or dent the modules during handling.
Be sure to wear protective gloves to avoid injury of hands by packing box of the
modules.
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Housing type joints and screw are applied to connect the modules to the piping.
Follow the instruction of the connection provided by the supplier at the connection
point. Wrong connections may damage the modules.
When connecting and unconnecting the modules to the piping, be sure to secure a
sufficient working space, and take care not to catch and hurt fingers.
Keep the connection surface free of any dirt or oil.
Be sure to install the modules vertically for effective air-scrubbing.
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2. Safety Instruction for Filtration Operation
Flush all the piping out with clean water and make sure no debris is remaining in
the piping prior to connecting the modules.
Confirm that the preservative chemical in the modules is completely drained out
before starting the filtration operation. The preservative chemical is harmful to
humans.
Flush the modules at low pressure, filling from the bottom, and vent to remove any
air from the modules. Air left in the modules may cause water hammer and may
result in damage to the membrane.
Prior to use, make certain modules are flushed. Filtrate should be drained unless it
meets the required quality.
Protect modules from direct sunlight and ultraviolet light. Ultraviolet light can
degrade module housings and membranes.
Constantly monitor filtrate quality such as turbidity and/or the number of particles
during filtration, and stop the operation if abnormal water quality is detected.
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Do not exceed the maximum applicable pressure of 300 kPa (43.5 psi). Higher
pressures can damage the modules. Do not exceed the maximum temperature of
40 deg C (104 deg F). The higher temperature damages the modules.
Do not freeze the membrane modules.
The operating conditions, including the filtration flux and the periodical physical
cleaning, must be properly set up otherwise the trans-membrane pressure may rise
too quickly. The operation range is described in the latter section of this manual.
Make sure air tubes or connected pipes are properly fixed. Otherwise, the tubes or
connected pipes may be blown away or behave violently during air-scrubbing.
Do not overfeed air to the modules. Excessive scrubbing air damages the
membranes and/or shortens the membrane life.
The air flow rate should be within the range below for each module type.
Air flow rate: 3.6 – 6.7 Nm3/h (2.1 – 3.9 scfm)
The maximum required air pressure during the air-scrubbing for the inside of the
module will be 40 kPa (6 psi).
At the integrity tests, such as Pressure Decay Test (PDT) or Diffusive Air Flow (DAF)
Tes t, keep the air pressure below 130 kPa (18.9 psi). Also, keep the source air
pressure lower than 200 kPa (29 psi), to prevent excess air inflow. All the air used
for air-scrubbing and integrity testing must be dry oil-free air.
Prohibited
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Prohibited

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3. Safety Instruction for Chemical Cleaning
Take special precautions when handling chemicals during chemical cleaning. Wear
the safety gears such as safety glasses and protective gloves. If chemicals come in
direct contact with your skin or clothes, treat the contacted part appropriately based
on the SDS.
Do not mix sodium hypochlorite with acid. Such mixture generates toxic chlorine
gas.
Stop operation whenever any anomaly occurs with the equipment or any signs of
an anomaly are observed.
In the chemical cleaning, strictly follow the procedure described in the latter section
of this manual. Otherwise, it may damage the modules or negatively affect the
membrane performance.
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Prohibited
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4. Safety Instruction for Disposal
Apply a service of a qualified waste disposing company when disposing of the
modules. Use the appropriate facilities in which hydrogen fluoride (HF) gas can be
neutralized when the module is to be incinerated. HF gas is generated with the
incineration of membrane.
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5. Warranty Claims
UF modules that are damaged due to improper loading, shipping, handling, or storing shall not
be covered by Toray Industries, Inc.’s warranty. Therefore, it is very important that the customer
firmly follows instructions of loading, shipping, handling, and storing of the UF modules
mentioned in this Instruction Manual.
UF modules which are in their original sealed package can be stored for 12 months from the
date they were shipped from the factory or warehouse. If they are stored for longer than 12
months, the warranty will become void unless otherwise Toray Industries, Inc. agrees.

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6. Warranty Policy
Full and proper compliance with this Instruction Manual is a mandatory required thing for the
claims under the warranty. In case of making a warranty claim, the customer automatically
agrees to provide Toray Industries, Inc. with the information about operation mode, recording
performance data of UF systems.
Kindly please contact Toray Industries, Inc. if the customer wishes to deviate from any of the
procedures or specifications mentioned in this Instruction Manual and request written approval
in advance. Otherwise, the customer has a risk of invalidation for any warranty claims that they
may make in the future.

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III. Specifications of Toray “HFUG Series” Membrane Module
Table 1. Specifications of membrane *1)
Membrane Material PVDF (Polyvinylidene fluoride)
Nominal Pore Size *2) 0.01 micrometers
Trans-Membrane
Pressure
Maximum *3) 300 kPa (43.5 psi)
Normal Operation Lower than 200 kPa (29.0 psi)
Storage and Operating
Temperature Range
1 – 40 deg C
(34 – 104 deg F)
Operating pH Range 1 – 10
*1): Note that the specifications are subject to change without notice.
*2): Estimation from removing model particles.
*3): TMP (Trans-Membrane Pressure) should be below 300 kPa (43.5 psi) at any time even during the
filtration.
Table 2. Feed water limits *1), *4)
Turbidity Intermittent Peak *5) 200 NTU
Continuous Maximum 50 NTU
TSS Intermittent Peak *5) 200 mg/L
Continuous Maximum 50 mg/L
Ozone Not detected
Pretreatment Filter Mesh Size Smaller than 200 micrometers
Temperature Range 1 – 40 deg C
(34 – 104 deg F)
pH Range 1 – 10
Max. Feed Pressure 300 kPa (43.5 psi)
*1): Note that the specifications are subject to change without notice.
*4): For design, please contact us.
*5): The duration time should be less than 48 hours and the occurrence frequency should not exceed
more than once a month.

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Table 3. Cleaning limits *1)
Cleaning pH Range 0 – 12
Cleaning Temperature Range 1– 40 deg C
(34 – 104 deg F)
Maximum Concentration of NaClO as Cl23,000 mg/L (10 < pH < 12)
Maximum NaClO Exposure
(Lifetime contact time) as Cl21,000,000 mg/L hours
Maximum Acid Contact Time 1,000 hours (pH > 0)
*1): Note that the specifications are subject to change without notice.
Table 4. Specifications of modules *1)
Module Type HFUG-B2315AN
Membrane Surface Area
(Outer Surface)
75 m2(807 ft2)
Dimensions
Diameter 178 mm (7.01 inches)
Length *6) 2,332 mm (7.651 ft)
Weight
Full of Water 65 kg (143 lbs)
Drained 35 kg (77 lbs)
Materials
Housing PVC and/or equivalent
Potting Epoxy and/or equivalent
Connections
Top Housing type joint, 2 inches (U.S.)
Bottom Housing type joint, 2 inches (U.S.)
Side Screw, 2.3 inches (original)
Operating
Conditions
Max. Feed Water Flow
(Feed Water only) 12.5 m3/h (55 gpm)
Max. Backwash Flow
(Backwash only)
13.8 m3/h (61 gpm)
Max. Air Flow
(Air only)
6.7 Nm3/h (3.9 scfm)
Filtration Method Outside to inside, dead end
Max. Inlet Pressure 300 kPa (43.5 psi)
Max. Temperature 40 deg C (104 deg F)
*1): Note that the specifications are subject to change without notice.
*6): The length above is for TYPE A. In case of TYPE B, 2,372mm (7.782ft), In case of TYPE C, 2,336mm
(7.677ft).

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Handle and operate the modules within the ranges and
the limits indicated in Table 1 to 4. Operation out of these
ranges or limits may damage the modules and affect
filtration performance.

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IV. Configuration of Toray “HFUG Series” Membrane Module
(1): Filtrate Outlet / Inlet of Backwash Water
(2): Air Outlet / Backwash Water Outlet
(3): Feed Water Inlet / Air Inlet / Drain Outlet
Connections
Pipe fitting outer
diameter
mm (in)
Connectors
(1) 60.3 (2”)
Housing type
joint 2 inches
(U.S.)
(2) 57.9 (2.3”)
Original *)
+ AS568-325
(Gasket)
(3) 60.3 (2”)
Housing type
joint 2 inches
(U.S.)
*)Referential Drawings:
Fig.
1. HFUG-B2315AN (TYPE A)

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Depending on customer demands, HFUG Series provides several connection options. TYPE
B or C can be used depending on how the top or bottom is connected. Please contact Toray
for more information.
Table 5. Referential drawings for HFUG-B2315AN (TYPE A, B and C)
HFUG-B2315AN
(TYPE A)
HFUG-B2315AN
(TYPE B)
HFUG-B2315AN
(TYPE C)
Figure
Top
Cap
Bottom
Cap