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Summary of Contents for Eurotec ETUF-9060R
- Page 1 ETUF-9060R Ultrafiltration Membrane User Manual Version 1.0 Product Manual...
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Page 2: Table Of Contents
CONTENT PAGE Section 1. General Information ………………………………………………………………………………………… Section 2. Ultrafiltration System Basics …………………………………………………………………………… Section 3. Module Installation ………………………………………………………………………………………… Section 4. Operations and Maintenance ………………………………………………………………………… Section 5. Storage and General Handling ………………………………………………………………………… User Manual... -
Page 3: General Information
Section 1: General Information 1.1 About EuroTec Established in Singapore as a regional center, EuroTec Pte Ltd is a subsidiary of First Line Co., a premium supplier and manufacturer of key water treatment equipment components. First Line Co. began in 2012 with its global headquarters, R&D center and more than 10 hectares of production facilities situated in Harbin, China. - Page 4 1.3 ETUF-9060R Specifications Membrane Specifications Property Specification Material Polyvinylidene Fluoride (PVDF) Flow Direction Outside-In OD/ ID/ Thickness 1.30/ 0.70/ 0.30 Pore Size Daltons/ µm 0.025 pH Tolerance (General Operation) 2 – 11 pH Tolerance (Short Term/ Cleaning) 1 – 12 Temperature Tolerance °C...
- Page 5 1.4 ETUF-9060R Module Parts End Cap Clamps w/ Bolts & Nuts O-Rings 216mm Collar Concentrate Chamber 2,340mm Module Housing Filtrate Outlet 1.5” FNPT Concentrate Outlet 1.5” FNPT Feed Inlet 1.5” FNPT Filtrate End (Top) Feed End (Bottom) 344mm Item Material...
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Page 6: Ultrafiltration System Basics
Section 2: Ultrafiltration System Basics 2.1 Basic System Design The schematic diagram below shows the basic configuration for a typical ETUF system’s key equipment and arrangement: Feed Chemicals Water + Water Discharge Chemicals Feed Filtrate Tank Tank Pump Pump Filtrate (P03) (P04) Feed... - Page 7 2.2 Key Auxiliary Equipment The key auxiliary equipment for a typical ETUF system includes (but is not limited to) the following: ▪ Feed and filtrate (or dedicated backwash) tanks When designing for the tanks, make sure that the material chosen (typically: fiber-reinforced plastic, reinforced concrete or stainless steel) is suitable for type of water it is to contain and for the type of environment that the system is situated in (i.e.
- Page 8 ▪ Backwash pump The backwash pump(s) should provide the required backwash flow with suitable allowance at a pressure no greater than the stated backwash pressure limit. The backwash pump should be controlled by a VFD or an equivalent device, which is linked to the control system.
- Page 9 The functions that are handled by the control system typically include: automated start-up/ shut-down of pumps, opening/ closing of critical valves, timed processes, emergency procedures, data recording and transmission (such as to a Supervisory Control and Data Acquisition or SCADA system). ▪...
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Page 10: Module Installation
The skid must be designed such that the modules can rest stably, with proper weight distribution, onto its platforms. The ETUF-9060R has a designated locating base for the module to rest on (see picture below). This locating base must be properly mounted onto the skid. Preferably, the bases is to be bolted onto the skid platform. - Page 11 ▪ The material and dimensions of the skid must be suitable for the environment it is located in and can withstand the weight of the modules as well as the vibration of the skids during operation. ▪ The feed, filtrate and concentrate ports of the modules are to be connected to their respective headers via pipes or hoses and adaptors.
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Page 12: Operations And Maintenance
Section 4: Operations and Maintenance 4.1 Key Operating Parameters The key parameters to note during the operation of the ETUF system are: ▪ Net filtrate flow rate This describes the final filtrate production rate of the system after deducting filtrate losses due to mainly the backwash, CEB and (most of the time) CIP processes. - Page 13 ▪ Backwash pressure Backwash pressure is the pressure required to backflush the membrane (during backwash process) at the design backwash flow rate. Similar to the TMP, the backwash pressure can also be an indicator of the fouling condition on the membrane. The higher the current backwash pressure in comparison to the startup/ post-chemical cleaning backwash pressure, the more the membrane is fouled.
- Page 14 ▪ CIP duration The CIP duration describes the length of time required for the entire CIP process. ▪ Recovery rate The recovery rate refers to the net amount of filtrate produced as a percentage of the total amount of filtrate produced. Recovery = [Net amount of filtrate produced/ Total amount of filtrate produced] x 100% 4.2 Start Up and Shut Down Before starting up the system, ensure that:...
- Page 15 4.3 Filtration Stage Filtration and backwash can be considered the “routine” part of UF operation. Both are typically performed with fixed parameters and sequences which are programmed into and executed by the control system. To initiate filtration, feed water is first pumped into UF modules using the feed pump. Filtration occurs under pressure and the filtrate is then channeled to the filtrate water tank.
- Page 16 4.4 Backwash Stage Backwash is conducted periodically and is intended as a means to, on a regular basis, physically remove foulants that are attached to the surface of the membranes and/ or that remain within the module. When the backwash stage is initiated by the control system, filtration is stopped (with the feed water remaining within the modules).
- Page 17 Module Draining The feed water is then drained from the modules. The feed and concentrate discharge valves are opened to allow this to happen. Feed Chemicals Water + Water Discharge Chemicals Feed Filtrate Tank Tank Pump Pump Filtrate (P03) (P04) Feed Pre- Backwash...
- Page 18 Backflush (Concentrate Side Discharge) After the module is drained, the first backflush conducted. Filtrate water is pumped from the filtrate/ backwash tank back into the membranes through the lumen side (i.e. a “reverse” of the feed flow direction). Backflush is conducted to further remove the foulants from the surface of the membrane as well as those trapped within the pores.
- Page 19 Backflush (Feed Side Discharge) After the first backflush is conducted, the second backflush takes place. Essentially it is the same as the first except that the discharge point for the backflush water is through the feed drain. Feed Chemicals Water + Water Discharge Chemicals...
- Page 20 Forward Flush Forward flush is usually conducted just before filtration is resumed. For this step, the feed water is pumped from the feed tank, passing through the modules and flushed out via the concentrate drain. There is no filtration during this time. The purpose of the forward flush, like air scouring, is to remove foulants from the surface of the membranes.
- Page 21 4.5 Chemical Cleaning – Chemical Enhanced Backwash (CEB) Even with physical cleaning (i.e. backwash), sometimes it is inevitable that foulant-buildup will still occur on the membranes over time. Thus, chemical cleaning methods are required to further clean the membranes. The two main methods for chemical cleaning are: Chemical Enhanced Backwash (CEB) and Clean-In-Place (CIP).
- Page 22 Soaking Following the chemical enhanced backwash, the module(s) is then isolated with all the valves being closed off to let the membranes soak for approx. 5 – 10 mins. Feed Chemicals Water + Water Discharge Chemicals Feed Filtrate Tank Tank Pump Pump Filtrate...
- Page 23 4.6 Chemical Cleaning – Clean-In-Place (CIP) CIP is conducted as a means to thoroughly clean the membranes. It typically requires a longer duration with more chemicals involved as compared to CEB. The procedures for conducting a CIP are: CIP Solution Recirculation The pre-mixed CIP solution (typically 100 –...
- Page 24 Air Scouring Air scouring is also conducted as part of the procedure. This step usually takes between 5 – 30 mins. Feed Water Chemicals + Water Discharge Chemicals Feed Filtrate Tank Tank Pump Pump Filtrate (P03) (P04) Backwash Feed Pre- Pump Filter Pump...
- Page 25 Backflush (Both Feed and Concentrate Side Discharge) This is similar to the backflush conducted during CEB except that no chemicals are dosed into the backflush water. This step usually takes between 1 – 2 mins. Feed Chemicals Water + Water Discharge Chemicals Feed...
- Page 26 The recommended chemicals for CIP are: Category Name Purpose Remarks Acid Hydrochloric Acid (HCl) Targets inorganic foulants. Adjust to pH 2 – 3 Sulfuric Acid (H Citric Acid (C Alkaline Sodium Hydroxide (NaOH) Targets organic foulants. Adjust to pH 10 – 11 (to use together with NaOCl).
- Page 27 If it is indeed determined that fiber breakages have occurred, then a leak arrest must be conducted. The procedure for fiber leak arrest for the ETUF-9060R is as below: 1. Drain the modules to be repaired. 2. Remove filtrate and concentrate connections.
- Page 28 Some of the key operating parameters and their typical values are listed below for reference only. Ultimately, the parameters depend on various factors such as the feed water quality and onsite limitations and conditions. (Note: Please consult with EuroTec Technical Support for further information). Parameter...
- Page 29 CIP Recirculation Flow Rate (per module) 2 – 4 System Recovery Rate 85 – 95 4.9 Troubleshooting The table below shows possible issues that operators may encounter when handling and operating ETUF membranes, their causes and suggested methods of resolving those issues. Issue Possible Cause Remedy...
- Page 30 Find leak location and repair the leak. Air valve closed. Open the air valve. Note: The issues, causes and remedies featured in the table above are non-exhaustive. For further enquiries, please consult EuroTec Technical Support. Page | 28 User Manual...
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Page 31: Storage And General Handling
Section 5: Storage and General Handling 5.1 General Storage and Handling Requirements ▪ Protect from impact and shock Exercise reasonable care when handling the modules. Excessive impact and shock may damage the module components as well as the membranes. ▪ Prevent water hammer All valves, pumps and equipment in the system must be designed and configured such that there is no sudden surge of air or water pressure entering the modules. - Page 32 5.2 Membrane Storage and Preservation ▪ New ETUF modules should be kept in their original packaging before use. ▪ When not mounted on the skids, ETUF modules must be rested parallel to the ground. ▪ Storage temperature should be between 5 – 40°C. ▪...
- Page 33 All title, ownership rights and intellectual property rights in and relating to this manual or any copies thereof including but not limited to copyright, logos, names, trademarks, concept and themes are owned by EuroTec Water Pte Ltd or used under authorized license by EuroTec Water Pte Ltd.
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