Recently, YIME successfully completed the installation of a silver recovery membrane system project in Xinfeng, Jiangxi, China.
This project was not simply the delivery of a membrane unit. Instead, it covers a complete process chain, from the generation and treatment of electroplating wastewater in the production workshop to resource recovery and water reuse in the recycling workshop.
As one of the core technologies of the project, the silver recovery membrane is applied to the silver recovery stage of the wastewater treatment process. Through membrane separation, silver-containing wastewater can be selectively treated and concentrated based on the separation characteristics of different substances. This provides favorable conditions for subsequent silver recovery while supporting the reduction, resource recovery, and refined management of industrial wastewater.
The project involved multiple stages, including equipment fabrication, factory assembly, equipment transportation, on-site piping installation, and membrane element installation in Xinfeng, Jiangxi. Each stage has a direct impact on the stability of the final system and reflects YIME's focus on the complete delivery of industrial wastewater resource recovery projects.
Equipment Fabrication: Preparing the System for On-Site Installation
The implementation of an industrial membrane system does not begin when the equipment arrives at the customer's site. For the Xinfeng silver recovery membrane project, YIME began planning from the equipment fabrication stage.
Based on the process requirements of the project, YIME coordinated the design and fabrication of the main equipment, system structure, piping configuration, and membrane installation. The main equipment for the silver recovery system was fabricated in advance, establishing the foundation for subsequent on-site installation and commissioning.
During equipment fabrication, the main structural frame was made of 304 stainless steel. This material provides good corrosion resistance, oxidation resistance, and mechanical strength, making it suitable for industrial wastewater treatment environments that may involve acidic, alkaline, and chloride-containing media.
At the same time, 304 stainless steel offers good toughness and machinability, providing stable structural support for the membrane system and helping improve the durability of the equipment during long-term operation.
The membrane housings were made of fiberglass-reinforced plastic (FRP). Compared with conventional metal materials, FRP is lightweight, mechanically strong, and highly resistant to chemical corrosion. It also provides good electrical insulation and does not rust easily.
The relatively smooth internal surface of an FRP membrane housing can help reduce the accumulation of deposits and scale, providing a more stable operating environment for the membrane elements. For electroplating wastewater, which can contain complex components and corrosive substances, FRP membrane housings can provide a practical solution for long-term operation while helping reduce maintenance requirements.
Because electroplating wastewater can vary significantly in composition and pollutant concentration across different production processes, actual operating conditions must be considered from the equipment design stage.YIME therefore integrated the requirements for pretreatment, equipment configuration, piping connections, membrane installation, and operating conditions into the overall system design. Equipment pre-assembly and inspection were also completed before shipment.
Pre-assembly and factory inspection make it possible to identify potential issues with equipment interfaces, dimensional matching, piping connections, and component assembly before the equipment reaches the project site. This can reduce the amount of adjustment required during on-site construction and provide additional assurance for subsequent installation and commissioning.
After fabrication and pre-inspection were completed, the main equipment was transported from the Minghui project site in Shenzhen to Xinfeng, Jiangxi.
Once the equipment arrived at the project site, the YIME project team carried out the installation of the main equipment, on-site piping construction, system connections, and membrane element installation according to the project plan and site conditions.
At present, the main equipment installation has been completed. The main structural frame has also undergone on-site testing and verification, and the system structure is operating stably with no abnormalities identified.
The project has subsequently entered the stage of system commissioning and process integration, preparing the silver recovery membrane system for future operation.
On-Site Installation in Xinfeng: Piping Construction and Membrane Installation
After the equipment arrived in Xinfeng, Jiangxi, the YIME project team began the on-site installation phase.
Based on the actual site conditions, the team completed piping construction and equipment connections. As an essential part of an industrial membrane system, the piping network connects different treatment units and allows wastewater to move through the process according to the designed treatment route.
At the same time, the membrane elements were installed on site.
As an important component of the project, the silver recovery membrane performs the membrane separation function within the silver recovery stage. Once the membrane system enters operation, parameters such as feed water quality, operating pressure, flow rate, recovery rate, and concentration polarization need to be properly managed to maintain stable operation under the designed conditions.
From equipment installation and membrane installation to piping connections, every step needs to remain coordinated with the overall treatment process.
Silver Recovery Membranes: Supporting Resource Recovery from Electroplating Wastewater
Electroplating processes generate different types of industrial wastewater, some of which may contain valuable metal resources.Traditional wastewater treatment has generally focused on pollutant removal and compliance with discharge requirements. With the development of industrial water treatment technologies, however, the industry is increasingly moving toward an integrated approach that combines pollution control, resource recovery, and water reuse.
Silver recovery membrane technology is one application of this approach in industrial wastewater resource recovery.This is precisely an application of specialty membranes: a form of precious metal recovery membrane technology. In addition, the Acid Recovery Purification Membrane is also another example of its application, which is used for phosphoric acid recovery.
Through membrane separation, different substances can be separated and concentrated according to their transport characteristics across the membrane. This provides suitable process conditions for subsequent silver recovery. At the same time, appropriately treated water can be further introduced into a reuse process, helping reduce freshwater consumption and improve the efficiency of industrial water recycling.
It is important to note that the actual performance of a membrane system does not depend solely on the membrane element itself. Feed water quality, pretreatment, operating pressure, flow rate, recovery rate, concentration polarization, and maintenance practices can all have a significant impact on system performance.
Therefore, a silver recovery membrane should not be considered an isolated product. It is an important technical unit within an integrated industrial wastewater resource recovery system and needs to operate in coordination with pretreatment, process equipment, and downstream water reuse processes.
The significance of the Xinfeng project extends beyond the installation of a silver recovery membrane system. More importantly, the project establishes a process connection from the electroplating workshop through wastewater treatment and silver recovery to the water reuse workshop.
The system is designed to connect different treatment units according to the defined process route, forming an integrated workflow centered on wastewater treatment, resource recovery, and water reuse.This approach represents a shift in industrial water management from simply addressing wastewater discharge to pursuing a broader combination of resource recovery and water recycling.
While controlling pollutants, the system also considers the potential resource value contained in wastewater and seeks to reduce dependence on freshwater through water reuse.For electroplating companies, this means that wastewater treatment systems increasingly need to be integrated with actual production processes.
Rather than treating water treatment equipment as an isolated end-of-pipe solution, systematic planning around the production process can help improve coordination between wastewater treatment, metal recovery, and water recycling.The successful completion of the Xinfeng silver recovery membrane system project represents another practical application of YIME's technology in silver recovery and industrial wastewater resource recovery.
The project extends YIME's capabilities beyond membrane products to equipment fabrication and integrated system applications. It also demonstrates YIME's ability to develop and deliver solutions based on the actual requirements of industrial customers.Looking ahead, YIME will continue to focus on industrial wastewater treatment, metal resource recovery, and water recycling. By combining membrane separation technology with engineering applications, YIME aims to provide industrial customers with technical support covering membrane products, equipment manufacturing, and integrated system solutions.
