China EDI stacks
LCX-20H High-Temperature China EDI Stacks A Complete Guide to Parameters Cases and Maintenance
Recently, many customers in the pharmaceutical, electronics, and vehicle urea purification industries have asked me: what EDI stacks should I choose for high-temperature scenarios? Today, I will focus on a highly practical one - the LCX-20H high-temperature China EDI stacks, which has performed beyo
Recently, many customers in the pharmaceutical, electronics, and vehicle urea purification industries have asked me: what EDI stacks should I choose for high-temperature scenarios? Today, I will focus on a highly practical one - the LCX-20H high-temperature China EDI stacks, which has performed beyond expectations in scenarios requiring frequent high-temperature disinfection.
I. LCX-20H: The "Must-Have" China EDI Stacks for High-Temperature Scenarios
Let me start with a real case: a biopharmaceutical factory previously used ordinary EDI membrane stacks. Every time it conducted 85°C high-temperature disinfection in accordance with GMP requirements, either the quality of the produced water fluctuated or the service life of the membrane stacks was drastically reduced. It had to replace the membrane stacks twice a year, resulting in extremely high costs. Later, it switched to the LCX-20H China EDI stacks. After 18 consecutive months of use and more than 160 disinfections, the resistivity of the produced water remained stable at 12-15 MΩ·CM, fully meeting the requirements for water for injection, and the maintenance cost was reduced by nearly 40%.
Why is it so durable? The core lies in its design specifically for high-temperature scenarios. It can withstand inlet water at 60°C for a long time and also resist high-frequency disinfection at 85°C. In industries with high hygiene requirements such as pharmaceuticals and food, it is simply a "must-have" EDI stacks.
II. Core Parameters of LCX-20H: Complete Compilation of High-Temperature Inlet Water & Operation Data
No matter which EDI stacks you choose, parameters are hard indicators. I have compiled the high-temperature inlet water requirements and operation parameters of LCX-20H into tables for your easier reference:
1. High-Temperature EDI Inlet Water Quality Requirements (Must Remember!)
| Item | Requirement Standard | Remarks |
|---|---|---|
| Inlet Water Source | Reverse Osmosis (RO) Product Water | Non-RO product water will severely damage the membrane stack |
| Inlet Water Conductivity | ≤10μs/cm (including CO₂ and silicon) | It is recommended to be ≤5μs/cm for longer service life |
| Temperature | 5-60°C | Exceeding the range will trigger protective shutdown |
| Inlet Water Pressure | 0.1-0.3MPa | Unstable pressure will affect ion migration efficiency |
| Maximum Total Chlorine (Cl₂) | <0.02ppm | Chlorine will oxidize ion exchange resins |
| Iron (Fe)/Manganese (Mn) | Each <0.01ppm | Exceeding the standard will form precipitates and block the membrane |
| Sulfide (S²⁻) | <0.01ppm | To avoid reaction with resins |
| pH Value | 7-8 | Deviation will reduce desalination efficiency |
| Total Hardness (calculated as CaCO₃) | <0.5ppm | To prevent scaling and blocking the fresh water chamber |
| Dissolved Organic Matter (TOC) | <0.5ppm (calculated as C) | To avoid organic matter contaminating the membrane and resins |
| Silicon (calculated as SiO₂) | <0.5ppm | Silicon is prone to precipitation at high temperatures, affecting produced water |
| Oxidizing Substances/Oil/Fat | Not Detected | Any residue will damage the membrane structure |
2. High-Temperature EDI Operation Parameters (Exclusive to LCX-20H)
| Item | Parameter Value | Description |
|---|---|---|
| Flow Range | 1.8-2.3m³/h | Can be fine-tuned according to water demand, not less than 1.8m³/h |
| Operating Current | 2.5A (0-6A adjustable) | Stable current ensures more uniform desalination efficiency |
| Operating Voltage | 0-340VDC | Automatically adapts to inlet water quality without manual adjustment |
| Maximum Power | 2KW/H | Saves about 15% energy compared with ordinary high-temperature EDI |
| Recovery Rate | 85-95% | Concentrated water can be reused for RO inlet to save water |
| Maximum Inlet Water Temperature | 60°C | Stable threshold for long-term operation |
| Disinfection Temperature | 85°C | Disinfection frequency ≥150 times, no membrane replacement required |
| Produced Water Quality | ≥10MΩ·CM | Usually 12-18 MΩ·CM in actual operation |
| Overall Dimensions (Height × Width × Total Length) | 605mm×315mm×560mm | Small floor space, can be installed in the corner of the workshop |
| Inlet/Outlet Connections | Fresh water: 1-1/4″PT internal thread; Concentrated water: 3/4″PT internal thread | Compatible with common industrial pipelines for easy installation |
III. Maintenance Methods for LCX-20H: Use It This Way to Extend Service Life by 2 More Years!
Many customers say "EDI stacks are difficult to maintain", but in fact, they just haven't found the right method. For the LCX-20H China EDI stacks, I have summarized 5 simple maintenance tips that electricians can master after reading once:
IV. 3 Frequently Asked Questions by Customers: "High-Frequency Doubts" About LCX-20H
Q1: Can the LCX-20H China EDI stacks be used in parallel with other types of EDI?
A1: Absolutely! For example, two LCX-20H units in parallel can produce 3.6-4.6m³/h of water, meeting higher water demand. However, it is important to use the automatic control mode to ensure uniform inlet water flow and pressure for each membrane stack, avoiding overload of some membrane stacks.
Q2: If the inlet water conductivity occasionally exceeds 5μs/cm, will it break immediately?
A2: An occasional exceedance is not a big problem, but it should not last more than 30 minutes! Long-term exceedance of 10μs/cm will cause "overload" of ion exchange resins, reduce desalination efficiency, and shorten the service life of the membrane stack. Therefore, you must keep a close eye on the quality of RO product water.
Q3: Is the after-sales response for LCX-20H fast?
A3: The after-sales service of the manufacturer is very timely. If you have any problems, call +86-13646187144 or send an email to [email protected]. Generally, a solution will be provided within 2 hours. For example, a customer once had a pressure alarm, and the engineer solved it in 10 minutes through remote guidance.
V. What Do Customers Say? Real Feedback Is More Reliable
VI. Summary of LC PURE Full Range of EDI Models
In addition to the LCX-20H, LC PURE has many EDI stacks suitable for different scenarios. You can choose according to water consumption and temperature requirements:
For more models, please click: https://www.fgwater.com/China-EDI-stacks/587.html





Send Your Water Treatment Requirement
Tell us the feedwater, required capacity, target water quality and project conditions. Your inquiry email will automatically include the page you are viewing so our team can understand the exact product, technology or reference that led to your request.
- Feedwater source / available analysis
- Design flow or required production capacity
- Target product-water quality or process duty
- Project country, operating conditions and delivery target