About us
Hangzhou Lanran Tech stands as a global leader in the manufacturing of ion exchange membranes, with an impressive annual output of 1,850,000m2.
We specialize in delivering tailored membrane solutions and advanced equipment to meet the specific needs of our clients, combining flexibility and efficiency with exceptional service.
wholly-owned companies
6
plants
4
sales offices
3
employees
380
R&D
5 R&D centers
176 highly skilled technical professionals
43 invention patents
62 utility model patents
Lanran’s dedicated R&D team works closely with customers to develop solutions that precisely align with their application requirements. From laboratory-scale trials to pilot projects and full-scale industrial production, we offer comprehensive expertise across all stages of equipment development, including integrated modular systems.
Industry solutions
Suatainability
Sustainability drives our innovation. We develop solutions that help industries thrive while reducing their environmental footprint. From advancing the circular economy to combating climate change, our technologies focus on preserving natural resources, reducing pollution, and promoting responsible water management. Our vision is a future where industrial growth aligns with environmental stewardship, fostering sustainable progress for generations to come.
Team Building
“Industrial cleanliness, Resource Hanmony”
At Lanran, we believe strong teams create innovative solutions. Our team-building activities foster collaboration, creativity, and trust, ensuring a vibrant workplace culture that drives excellence. We cultivate the synergy to redefine separation and refine solutions, delivering cutting-edge technologies to our valued clients.
News
How to Increase Lithium Extraction Capacity Without Building a New Production Line?
For many aging lithium extraction plants, the biggest challenge is no longer raw material supply — it’s production bottlenecks caused by outdated membrane performance and early-stage system design limitations. A leading salt lake lithium producer in China recently faced this exact issue. After more than 7 years of operation, its lithium concentration production line had reached the processing limit of the original electrodialysis system. The conventional solution would have required: Instead, the company chose to optimize its existing lithium extraction system. LANRAN implemented a targeted electrodialysis retrofit solution by upgrading the core ion exchange membranes and key stack components. The project introduced next-generation high-selectivity membranes with improved ion transport efficiency, combined with optimized process engineering developed through 17 years of industrial electrodialysis experience. The retrofit was completed in just two weeks — without changing the existing equipment footprint or power configuration. Results after the upgrade:✔ 10% increase in production capacity✔ Lithium concentration increased to over 21 g/L✔ Improved mass transfer efficiency✔ Faster ROI with minimal capital investment For lithium brine processing and salt lake lithium extraction projects, upgrading membrane systems can often deliver significant capacity expansion without building new facilities. At LANRAN Technology, we help industrial clients optimize electrodialysis systems, improve lithium recovery efficiency, and unlock additional value from existing production assets through advanced ion exchange membrane technology and engineering upgrades.
Rising Sulfuric Acid Costs Are Changing How Industries Handle Waste Salt
As industries face rising sulfuric acid prices, stricter wastewater discharge regulations, and growing pressure to improve resource efficiency, more manufacturers are turning to Bipolar Membrane Electrodialysis (BPED) technology for industrial brine treatment and chemical recovery. A BPED system for sodium sulfate recovery and industrial waste salt recycling has recently been successfully commissioned in Ningxia, China, demonstrating a practical approach to converting high-salinity wastewater into valuable reusable resources. The project is designed to treat sodium sulfate-rich nanofiltration concentrate generated from industrial wastewater processes. Instead of treating the stream as waste, the system enables resource recovery and supports zero liquid discharge (ZLD) and circular manufacturing strategies. Project Overview • Technology: Bipolar Membrane Electrodialysis (BPED)• Application: Sodium sulfate recovery & industrial brine recycling• Feed Stream: Sodium sulfate-rich brine containing trace NaCl• Current Feed TDS: ~100 g/L• Original Design Feed TDS: 190–210 g/L The original process design utilized dissolved sodium sulfate solids recovered from nanofiltration concentrate. Following pretreatment processes including ozone oxidation, resin purification, ultrafiltration, and decarbonization, the feed solution entered the BPED system for further conversion and resource utilization. One of the key challenges of this project was fluctuating onsite feedwater quality. Despite significant variations between actual operating conditions and the original design parameters, the BPED system maintained stable, continuous operation throughout commissioning. This project highlights several important advantages of membrane-based acid and alkali recovery technologies: ✔ Stable operation under complex and variable brine conditions✔ Reduced dependence on externally purchased sulfuric acid and caustic soda✔ Lower hazardous waste treatment and disposal costs✔ Efficient treatment of high-salinity industrial wastewater✔ Support for zero liquid discharge (ZLD) systems✔ Flexible integration with existing wastewater treatment infrastructure✔ Improved industrial resource recovery and circular utilization With increasing global demand for sulfate waste recovery, sustainable chemical recovery, and industrial wastewater reuse, BPED technology is becoming an increasingly important solution for industries including chemicals, mining, lithium battery materials, metallurgy, and environmental engineering. Backed by in-house ion exchange membrane manufacturing, electrodialysis stack production, and integrated BPED system engineering capabilities, LANRAN provides customized solutions for complex industrial separation and resource recovery applications worldwide.
LANRAN Mamicuo Salt Lake Bipolar Membrane project
We’re honored to be featured by the Membrane Industry Association of China for our Mamicuo Salt Lake Bipolar Membrane project in Tibet, China. At an altitude of 4,400 meters, LANRAN’s BPED system is helping transform post-lithium extraction NaCl wastewater into reusable hydrochloric acid and caustic soda — supporting resource recovery, closed-loop production, and zero-liquid-discharge goals in the salt lake lithium industry. The project is built around our 110-type bipolar membrane stack, designed for:✔ High efficiency✔ Lower energy consumption✔ Compact footprint✔ Reliable operation in harsh plateau environments Once operational, the system will help reduce dependence on externally purchased chemicals while enabling sustainable reuse of wastewater streams. This project reflects how electrodialysis and bipolar membrane technologies can support greener lithium extraction and circular resource utilization in challenging industrial environments. Special thanks to the Membrane Industry Association of China for sharing this story. Read the original article here: https://mp.weixin.qq.com/s/pbb1weei7zhZlFArfoCpGA