Toray HSU-1515 Instruction Manual
  1. Manuals
  2. Brands
  3. Toray Manuals
  4. Water Filtration Systems
  5. HSU-1515
  6. Instruction manual

Toray HSU-1515 Instruction Manual

Submerged uf membrane element
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
Issued in June 2009
Revised in March 2014
TORAY Submerged UF
MEMBRANE ELEMENT
Instruction Manual
Model:
HSU-1515
Toray Industries, Inc.
issued by
Water Treatment & Environment Division
2-1-1, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8666 Japan
Tel: +81-3-3245-4557
Fax: +81-3-3245-4913
URL: http://www.toray.com
BJADJCAG

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the HSU-1515 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Toray HSU-1515

Summary of Contents for Toray HSU-1515

  • Page 1 Issued in June 2009 Revised in March 2014 TORAY Submerged UF MEMBRANE ELEMENT Instruction Manual Model: HSU-1515 Toray Industries, Inc. issued by Water Treatment & Environment Division 2-1-1, Nihonbashi-Muromachi, Chuo-ku, Tokyo 103-8666 Japan Tel: +81-3-3245-4557 Fax: +81-3-3245-4913 URL: http://www.toray.com BJADJCAG...

  • Page 2: Table Of Contents

    Content Introduction ...................... 1 1. Characteristics of Toray Submerged UF Membrane Rack ....... 1 2. Applications of Toray Submerged UF Membrane Rack ........2 For Your Safety ....................3 1. Safety Instruction for Unpacking and Installation ..........4 2. Safety Instruction for Filtration Operation ............6 3.

  • Page 3: Introduction

    Introduction Toray Submerged UF Hollow Fiber Membrane Rack is the submerged type hollow fiber UF (ultra filtration) membrane rack developed with the polymer science and the membrane fabrication technologies accumulated for a long time in Toray Industries, Inc. The membrane material is Polyvinylidene fluoride (PVDF). The nominal molecular weight cut off of the membrane is 150,000 daltons.

  • Page 4: Applications Of Toray Submerged Uf Membrane Rack

    The membrane material is PVDF, which allows you 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. 2. Applications of Toray Submerged UF Membrane Rack Drinking Water Production Membrane Elements certified with NSF61...

  • Page 5: For Your Safety

    For Your Safety Please be sure to read and follow the instructions below before using. 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.

  • Page 6: Safety Instruction For Unpacking And Installation

    1. Safety Instruction for Unpacking and Installation DANGER DANGER Be sure to wear safety gear such as rubber gloves and safety glasses for unpacking. The membrane is packaged in sodium hypochlorite Instruction solution (100mg/L). If the solution happens to touch on the skin, wash the affected part with running water.
  • Page 7 Be careful not to damage or dent the element during handling. Prohibited IDF/ISO Clamp Union Fittings 1.5 are applied for connecting the element of HSU-1515 to the piping. Do not overtighten the cramp as Instruction damage to the element may occur.

  • Page 8: Safety Instruction For Filtration Operation

    2. Safety Instruction for Filtration Operation DANGER DANGER Flush all the piping out with clean water and make sure no debris is remaining in the piping prior to charging water to the element from the Instruction piping. Confirm that the preservative chemical in the element and the piping is completely washed out before starting the filtration operation.
  • Page 9 The air flow rate should be within the range below for each element. Instruction HSU-1515: 1.5 – 3.0 Nm At the Integrity tests, such as Pressure Decay Test (PDT) or Diffusive Air Flow (DAF) Test, keep the air pressure below 125 kPa. Keep the...

  • Page 10: Safety Instruction For Chemical Cleaning

    3. Safety Instruction for Chemical Cleaning DANGER DANGER Take special precautions when handling chemicals during chemical cleaning. Wear the safety gear such as safety glasses and protective Instruction gloves. If chemicals come in direct contact with your skin or your clothes, treat the contacted part appropriately based on the MSDS.

  • Page 11: Safety Instruction For Disposal

    4. Safety Instruction for Disposal WARNING WARNING When dispose the element, please apply a service of a qualified waste disposing company. When the element is to be incinerated, please Instruction apply the appropriate facilities in which hydrogen fluoride (HF) gas can be neutralized.

  • Page 12: Outline

    The diameter of the hollow fiber membrane is designed to be as follows: For HSU-1515: Outside diameter is 1.4 mm. Inside diameter is 0.9 mm. Molecular weight cut off (MWCO) of the HSU membrane is shown in Fig. 2. The MWCO is determined by dextran solution having molecular weight of 70,000, 200,000 and 500,000.

  • Page 13: Outline Of Element

    The membrane is manufactured with special spinning method developed by TORAY and the nature of the membrane surface is modified for high fouling resistance. As a result, this membrane enables very high filtration flux compared to other PVDF membranes. In addition, the physical strength of the membrane fiber is so high that it hardly gets breakage during the normal operation for many years.

  • Page 14: Outline Of Rack

    3. Outline of rack “Rack” contains a number of membrane elements stacked at equal clearance and two air diffusers. Each element is connected to the permeated water manifold. The air diffuser consists of a number of holes to supply scouring air to each membrane element.

  • Page 15: Specifications And Configuration

    IV. Specifications and Configuration 1. Specifications of Membrane Table 1. Specifications of membrane * Membrane Type Nominal Molecular Weight Cut Off 150,000 * Membrane material PVDF Maximum * 100 kPa Filtrating Trans-Membrane Pressure Normal Operation Not higher than 100 kPa Backwashing Maximum * 200 kPa...

  • Page 16: Specifications And Configuration Of Element

    2. Specifications and Configuration of Element (1) Specifications of element Table 2. Specifications of element * Element Type HSU-1515 Membrane Type Membrane Surface Area 20 m (Outer Surface) Diameter 147 mm Dimensions Length 1,327 mm Weight Wet Condition 18 kg...
  • Page 17 (2) Configuration of element Filtrate Outlet Filtrate Outlet Inlet of Backwash Water Inlet of Backwash Water (a): Nozzle (b): Nut Lowest Water Level Lowest Water Level in Filtration in Filtration Feed Feed Feed Feed Drain Drain Drain Drain Connections Pipe fitting outer Connectors diameter...

  • Page 18: Specifications And Configuration Of Rack

    3. Specifications and Configuration of Rack (1) Specifications of Rack Table 3. Specifications of Rack Module “R16“ * No. of Elements / Rack 16 elements Element Type HSU-1515 Total Membrane Area 320 m (Outer Surface) Height 1,800 mm Dimensions Length...
  • Page 19 Table 4. Specifications of Rack Model “R08“ * No. of Elements / Rack 8 elements Element Type HSU-1515 Total Membrane Area 160 m (Outer Surface) Height 1,800 mm Dimensions Length 851 mm Width 365 mm Weight Wet Condition Max. 250 kg...
  • Page 20 (2) Configuration Rack Model “R16”...
  • Page 21 Rack Model “R08”...

  • Page 22: Feed Water And Cleaning Limits

    4. Feed water and Cleaning Limits Table 5. Feed water limits * Element Type HSU-1515 Intermittent Peak * 1,000 NTU Turbidity Continuous Maximum 200 NTU Intermittent Peak * 1,000 mg/L Continuous Maximum 200 mg/L Pretreatment Filter Mesh Size Smaller than or equal to 0.5 mm...

  • Page 23: Installation

    V. Installation 1. Element into Rack (1)Unpack the wooden box. Take the element out of plastic bag. - Wear rubber gloves and safety glasses when you DANGER DANGER unpack the element. (2) Confirm the nozzle and the nut are not loose. - Do not drop the element.
  • Page 24 - Do not drop the element rack. WARNING WARNING - Use the equipments such as chain blocks, a crane or a forklift truck when you handle the element rack. (6) Make sure that the element rack is installed vertically. - If the element is not installed vertically, the effect of CAUTION CAUTION the air scrubbing would be reduced and an effective...
  • Page 25 2. Layout of Rack in Membrane Submerged Tank Fig.7 and Fig.8 present a top view and a side view of the tank containing three membrane racks. It is required to keep the dimensions of W1, W2, W3 and L1 as mentioned below. Liquid Level Liquid Level Union...
  • Page 26 P1: more than 424 mm (ii) L1: L1, the distance between the top of the rack and the liquid level of the tank, should be more than 100 mm at anytime of the normal operation. (the maximum is when after finishing backwash, the value is changing depend on operation condition.

  • Page 27: Operation

    VI. Operation 1. Advance preparation (1) Check that all piping is connected appropriately and flushed out prior to the operation. Fig. 9 shows a typical example of piping. Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Rack Rack Feed Feed...
  • Page 28 - The element is packaged in sodium hypochlorite CAUTION CAUTION solution (100mg/L) as the preservative at the time of shipment. The preservative should be washed out before using the element. After that, keep clean water on the element to prevent the membranes from drying out.

  • Page 29: Filtration

    2. Filtration Fig. 10 shows a typical example of the flow diagram for filtration. Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Membrane Rack Rack Feed Feed Feed Feed Feed Feed Feed Feed Feed Feed Feed Feed Feed Feed raw water raw water...
  • Page 30 If abnormal water quality is detected, check the integrity of the element with PDT (Pressure Decay Test) or DAF (Diffusive Air Flow) Test. The test procedure is provided as the technical information by Toray.

  • Page 31: Backwash And Air-Scrubbing

    3. Backwash and Air-scrubbing The physical cleaning with backwash and air-scrubbing should be carried out periodically and automatically for the continuous filtration. The frequency of the physical cleaning mainly depends on the raw water quality (Typical frequency is once every 30 minutes normally. Please contact us if you need technical support.). Fig.
  • Page 32 Excessive air flow rate may damage the membranes. HSU-1515: 1.5 – 3.0 Nm (5) After backwashing with air-scrubbing for a fixed time (normally 60 seconds), close the air scrubbing valve (V-5), stop the chemical feed pump (if used) and the backwash pump and close the chemical feed valve (V-7) and the backwash valve (V-4).

  • Page 33: Toray Maintenance Cleaning

    Instead of chemical dosing for every backwash, soaking the membranes in chemical solution several tens of minutes a day is also effective for membrane performance retention. This process is called Toray Maintenance Cleaning (TMC). TMC is usually held following the backwash and air-scrubbing which does not contain the chemical dosing.

  • Page 34: Air Diffuser Cleaning

    5. Air Diffuser Cleaning The clogging of diffuser holes causes uneven air diffusion and membrane clogging, and the racks are broken in the worst case. Please clean the air diffusers once a day to prevent such trouble.(it is recommended to install the automatic air diffuser cleaning system with automatic valves).
  • Page 35 (3) After keeping the cleaning process Compressor Compressor for about 5 seconds, stop the or Blower or Blower operation again. Repeat the stop and cleaning process for about 5 times, then close V1, V2 and V3 valves. Drain out the water inside the tank, restart the feed and filtration process.

  • Page 36: Temperature Correction Factor

    6. Temperature Correction Factor The permeability of the membranes is influenced by temperature mainly because the water viscosity changes with temperature. When you evaluate the permeability correctly, you need to eliminate the temperature effect with the temperature correction factor (TCF) shown in Fig 15. A Trans-Membrane Pressure (TMP) measured at some real temperature can be converted to 25 degree C corrected TMP with multiplying by TCF at real temperature shown in Fig.

  • Page 37: Integrity Test And Maintenance

    VII. Integrity Test and Maintenance 1. Pressure Decay Test (PDT) Pressure Decay Test (PDT) is recommended for testing the integrity of TORAY Submerged PVDF Hollow Fiber Membrane Element. The PDT is conducted by applying pressurized air to the element and monitoring the rate of pressure decay over a specific duration of time.
  • Page 38 A single broken membrane fiber in 128 HSU-1515 elements gives a pressure decay of approximately 5 kPa in 5 minutes, so a decay of 5 kPa in 5 minutes is normally used to indicate the presence of a single broken membrane fiber for this size of unit.
  • Page 39 Diffusion Only (No Breaks) Pressure Decay Time, minutes Fig. 17 HSU-1515 pressure decay rates with one broken membrane fiber (calculated) NOTE: Above figure and indicates the estimate values. The actual values may depend on the volume of the pipe work, temperature, etc.

  • Page 40: Maintenance

    VIII. Maintenance 1. Chemical cleaning The chemical cleaning should be carried out to remove foulants accumulated in the membrane pores or sticking to the membrane surface. - Carry chemical cleaning before CAUTION CAUTION trans-membrane pressure rises up to 70 kPa or at least every 6 months, otherwise the element filtration performance could be reduced significantly.
  • Page 41 Membrane Membrane Membrane Rack Rack Rack Feed Feed Feed Feed Feed Feed Feed raw water raw water raw water raw water raw water raw water raw water Filtrate Filtrate Filtrate Filtrate Filtrate Filtrate Filtrate Filtrate Filtrate Filtrate pump pump pump pump pump pump...
  • Page 42 Excessive air flow rate may damage the membranes. HSU-1515: 1.5 – 3.0 Nm (6) Open the drainage valve (V-3) to drain the chemical out from the submerged tank completely and from the element almost completely.
  • Page 43 of the filtrate piping, close the feed water valve (V-1). - Take appropriate measures prevent CAUTION CAUTION mis-operation or accidents that could cause the chemicals to get into the product water. Check the piping and correctly position of each valve before starting the chemical cleaning.

  • Page 44: Storage Of New Element And Rack After Use

    IX. Storage of New Element and Rack after use Follow the instruction below when you store the element. - Be careful not to freeze the element. CAUTION CAUTION 1. Storage of New Membrane Element Keep the element in the original packing in a dark and cool place (0 – 40 degree Avoid direct sunlight and moisture.
  • Page 45 This Instruction Manual does not intend to guarantee the results of application of the information provided herein or the safety and the compatibility of this product. Before using this product, the user is asked to check for its safety and compatibility with the intended purpose.

Table of Contents