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.
Ventures
12
plants
4
sales offices
3
employees
380
R&D
5 R&D centers
176 highly skilled technical professionals
44 invention patents
68 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
Electrodialysis for RO Concentrate Management in Steel Wastewater ZLD
Steel production generates complex, high-salinity wastewater streams. As water reuse and zero-liquid-discharge requirements become increasingly important, the treatment of RO concentrate has become a key challenge—particularly when the concentrate must ultimately be handled by energy-intensive evaporation processes. In the Yunnan Shenlong Steel Wastewater Zero Liquid Discharge Project, LANRAN’s electrodialysis system is integrated downstream of the secondary RO process to further concentrate the RO concentrate before final evaporation. At the same time, the dilute stream produced by electrodialysis is returned to the upstream RO process for further treatment and water recovery. Secondary RO Concentrate → Electrodialysis → Concentrate → Final Evaporation ↘ Dilute Stream → RO Process By introducing electrodialysis as an intermediate concentration step, the process helps reduce the water volume entering the final evaporation stage while maintaining water within the treatment loop. The system was installed, commissioned, and put into production in July 2026. This project demonstrates how ED can be integrated with RO and evaporation to optimize high-salinity wastewater treatment and support ZLD in the steel industry.
Bipolar Membrane Electrodialysis for High-Purity Molybdic Acid Production
Molybdic acid is an important molybdenum chemical intermediate widely used in catalysts and other high-value applications. With increasing demand for high-purity molybdic acid, producers are looking for cleaner and more resource-efficient ways to convert molybdate salts into valuable products. Traditional chemical conversion processes may require external acid or alkali and generate additional salt streams. Bipolar Membrane Electrodialysis (BPED) offers an alternative approach by generating H⁺ and OH⁻ through water dissociation, enabling the conversion of dissolved salts into acid and alkaline streams. LANRAN BPED Solution for Molybdate Conversion In this project, dissolved ammonium molybdate and sodium molybdate are used as feedstocks. LANRAN’s BPED system converts the feed solution into a molybdic acid solution and an alkaline stream. The molybdic acid solution is further processed to produce high-purity molybdic acid, while the generated alkali is returned to the upstream process for feedstock dissolution. Molybdate Salts → BPED → Molybdic Acid Solution + Alkali → High-Purity Molybdic Acid This process design makes the generated alkali part of the production cycle rather than simply treating it as a separate output, creating opportunities for chemical reuse and improved process integration. From Technology to Industrial Application The project is equipped with a containerized BPED system, designed and manufactured by LANRAN for industrial application. LANRAN’s technical team is supporting the on-site installation and commissioning of the system. More importantly, the project demonstrates the potential of BPED to integrate molybdate conversion, downstream purification, and alkaline reuse within a single production process. By reducing the need for external chemical inputs and enabling internal alkali reuse, BPED offers a promising approach to more resource-efficient molybdic acid production and molybdenum chemical processing.
Lithium Battery Recycling Expansion Project Progresses with LANRAN Electrodialysis Technology
Supporting Lithium Resource Recovery from Spent LFP Batteries With the rapid development of electric vehicles and energy storage systems, the demand for lithium resources continues to increase. Meanwhile, efficient recycling of spent lithium-ion batteries has become an important pathway for resource conservation and sustainable battery supply chains. Located in Qujing, Yunnan Province, China, this lithium battery recycling expansion project focuses on the comprehensive utilization of spent lithium iron phosphate (LFP) batteries. Through hydrometallurgical recycling processes, valuable lithium resources are recovered from battery materials and converted into reusable resources. Since 2020, LANRAN has participated in multiple phases of lithium concentration projects at this site, providing membrane separation solutions to support lithium recovery and resource utilization. LANRAN Electrodialysis System for Lithium Recovery For this expansion phase, LANRAN is supplying a two-stage electrodialysis system based on semi-homogeneous membrane technology. The system is designed to purify and concentrate lithium nitrate (LiNO₃) from cathode material leaching solutions, improving lithium recovery efficiency in the hydrometallurgical recycling process of spent LFP batteries. By applying advanced electrodialysis technology, the system helps optimize lithium solution treatment, reduce resource loss, and support the production of high-value lithium products from recycled battery materials. Project Installation Progress The electrodialysis equipment was shipped on July 18, 2026, and delivered to the project site starting July 21. Following equipment arrival, the LANRAN project team quickly coordinated installation activities and worked closely with on-site partners to advance equipment positioning, piping installation, and system integration. The project is currently progressing according to schedule, with commissioning preparation underway. Advancing Sustainable Battery Recycling Upon completion, the electrodialysis system will further enhance lithium resource recovery capabilities at the recycling facility, supporting more efficient utilization of valuable resources from spent lithium batteries. Through ion exchange membrane technology and industrial electrodialysis solutions, LANRAN continues to support global customers in developing cleaner and more sustainable resource recovery processes.