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Issued in December 2018
TORAY Pressurized PVDF Hollow Fiber
TM
Membrane Module "TORAYFIL
"
Instruction Manual
Model: "HFU series"
(type AN)
Toray Industries, Inc.
Issued by
Water Treatment & Environment Division
2-1-1, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8666 Japan
Tel: +81-3-3245-4552
Fax: +81-3-3245-4913
URL: www.toraywater.com
BJAHABJE
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Table of Contents
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Summarization of Contents
I. Introduction
1. Characteristics of Toray "HFU series" Membrane Modules
Details the key features of HFU series membrane modules, including filtration flux, water quality, mechanical strength, and chemical durability.
2. About "type AN"
Explains the specific modifications and advantages of the 'Type AN' module variant, including its compatibility with 'Type N' modules.
3. Applications of Toray "HFU series" Membrane Module
Lists the primary applications for Toray HFU series membrane modules, such as drinking water and RO pretreatment.
II. For Your Safety
Safety Precautions and Symbols
Outlines important safety instructions and explains the meaning of hazard symbols (Danger, Warning, Caution) and action symbols (Prohibited, Instruction).
1. Safety Instruction for Unpacking and Installation
Provides crucial safety guidelines for unpacking membrane modules, including handling preservative solutions and protective gear.
2. Safety Instruction for Filtration Operation
Details safety measures during filtration operation, covering piping, chemical presence, air purging, and monitoring filtrate quality.
3. Safety Instruction for Chemical Cleaning
Emphasizes safety precautions during chemical cleaning, including chemical handling, mixing hazards (chlorine gas), and anomaly detection.
4. Safety Instruction for Disposal
Instructs on the safe disposal of modules, recommending qualified waste disposal services and proper handling of incineration byproducts.
III. Specifications of Toray "HFU series" Membrane Module
Membrane and Feed Water Specifications
Presents key specifications for membrane material, pore size, pressure limits, operating ranges, and feed water quality limits.
Module Specifications and Cleaning Limits
Details module dimensions, weight, materials, connections, operating conditions, and specifies limits for cleaning parameters like pH and temperature.
V. Installation
Unpacking and Module Preparation
Guides users through unpacking modules, removing plugs, and draining preservative solutions, highlighting safety measures for handling chemicals.
Module Mounting and Securing
Explains how to mount modules vertically, secure them using hanging hooks or support belts, and avoid dropping or overtightening.
Piping Connections and Air Inject Setup
Provides instructions for connecting piping using housing type joints, specifying torque limits, and detailing the correct placement for air inject.
Vertical Installation Verification
Confirms the importance of vertical module installation to ensure effective air scrubbing and optimal filtration performance.
IV. Configuration of Toray "HFU series" Membrane Module (type AN)
Module Configuration and Connection Details
Illustrates module configurations (HFU-2020AN, HFU-1020AN) and details pipe fitting diameters and connector types for each port.
VI. Operation
1. Filtration Startup Procedure
Details the steps for initiating filtration, including checking piping, closing valves, opening exhaust, and gradually introducing feed water.
Filtration Monitoring and Stopping
Covers monitoring filtrate flow, pressure limits, and guidelines for gradually closing feed water valves when stopping operation.
2. Backwash and Air-Scrubbing
Backwash and Air-Scrubbing Sequence
Describes the process of physical cleaning using backwash followed by air-scrubbing, including timing and avoiding simultaneous operations.
Air Flow Rate and Pressure for Scrubbing
Specifies the recommended air flow rates and maximum pressure for air-scrubbing to prevent membrane damage and ensure effectiveness.
Filtrate Quality Monitoring during Operation
Highlights the need for continuous monitoring of filtrate water quality and outlines integrity tests (PDT, DAF) if abnormalities are detected.
3. Toray Maintenance Cleaning (TMC)
TMC Procedure and Frequency
Explains Toray Maintenance Cleaning (TMC) as an alternative to chemical dosing, detailing its process, frequency, and soaking times.
TMC Chemical Soaking and Air-Scrubbing
Details the TMC steps involving chemical soaking, air-scrubbing, and rinsing, including air flow rate recommendations for scrubbing.
TMC Repeat Procedure and Quality Check
Describes repeating TMC steps until water quality is met and ensuring valves are closed, with a reminder to monitor filtrate quality.
4. Basic Trans-Membrane Pressure Calculation
TMP Calculation Formula and Example
Provides the formula for calculating Trans-Membrane Pressure (TMP), considering pressure gauge height differences, with a worked example.
5. Temperature Correction Factor
TCF for Permeability and Flow Rate
Explains how temperature affects membrane permeability and flow rate, and introduces the Temperature Correction Factor (TCF) for adjustments.
VII. Chemical Cleaning
Chemical Cleaning Precautions and Procedure
Highlights precautions for chemical cleaning, including pressure limits, following manual instructions, and handling chemicals safely.
Chemical Cleaning Flow Diagram and Circulation
Presents a flow diagram for chemical cleaning and outlines steps for circulating chemicals, including opening specific valves and using pumps.
Standard Chemical Cleaning Conditions
Defines standard conditions for chemical cleaning, including pollutants, chemicals, concentration, circulation time, temperature, and flow rates.
Chemical Cleaning Alternatives and Warnings
Lists alternative cleaning chemicals and provides critical warnings about mixing chemicals (toxic chlorine gas) and proper rinsing procedures.
VIII. Storage of Membrane Module
Storage of New and Used Membrane Modules
Details storage guidelines for new modules (original packing, cool place) and used modules (short-term, long-term with chemical preservation).
Long-Term Storage Chemical and Replacement
Specifies chemicals for long-term storage (more than seven days), including sodium bisulfite, and guidelines for replacing preservative chemicals.
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