In April 2026, at the 27th China International Environmental Protection Expo (CIEPEC), Shuiyi Membrane Technology Co., Ltd. showcased its high-performance municipal wastewater treatment membrane products and process solutions under the theme “Dual-Engine Membrane Solutions: Focus on Power and Municipal Sectors.”The company attracted strong interest in its solutions for boiler feedwater treatment in the power industry and for municipal wastewater treatment. The following summarizes the key technical features and process advantages across these two core application sectors.
Municipal Wastewater Treatment Membrane: Fifth-Generation MBR Technology
To address the stringent requirements of power plants for boiler feedwater — such as high purity, low energy consumption and long-term stable operation — Shuiyi Membrane has launched two major product series based on membrane separation technology: the Shuiyi HR Series.
Desalination Performance of Second-Generation Industrial Pure Water Reverse Osmosis Membrane
HR Series
- Achieves ultra-high salt rejection of ≥ 99.7%
- Recommended for the first stage of demineralized water systems
- Meets requirements for high recovery rate and superior permeate quality
Permeate Stability
- Improved and more stable permeate flow compared to the previous generation
- Slower increase in differential pressure
- Extended chemical cleaning intervals
Cost Efficiency
- HRLE series is recommended for the second stage of demineralized water systems
- Features lower operating pressure and higher permeate flow
Applicable Scenarios
The Shuiyi HR Series industrial pure water reverse osmosis membranes, characterized by high salt rejection and high permeate flow, are widely used in industrial feedwater applications such as power generation, photovoltaics, and chemical industries.
The key performance parameters of Shuiyi pressurized ultrafiltration membranes, fabricated from PVDF using the Thermally Induced Phase Separation (TIPS) process, are as follows:
| Indicators | Specifications/Performance Benefits |
| Breaking Force | >6N,Continuous filament; withstands simultaneous backwashing with air and water |
| Operating Throughput | More than 30% improvement over traditional NIPS products |
| Chemically Resistant | Can withstand repeated cleaning with a 4% NaOH solution over the long term, with high flux recovery |
| Resistance To Pollution | Suitable for influent with high turbidity and high organic content |
Application Value:
Serves as a pretreatment unit for reverse osmosis (RO)
Significantly reduces the Silt Density Index (SDI) value
Ensures long-term, stable operation of the downstream RO system
Reduces the frequency of membrane replacement
Municipal Wastewater Treatment Solutions
Shuiyi Fifth-Generation MBR Membrane
Addressing key challenges in municipal wastewater treatment, including stricter discharge standards, limited land availability, and energy consumption control, Shuiyi has achieved three major technological upgrades with its fifth-generation MBR membrane product.
Core Performance Parameters
| Parameter | Value |
| Operating Flux | 25–35 LMH (approximately 40% higher than the fourth generation) |
| Membrane Area | Reduced by 40% for the same treatment capacity |
| Aeration Energy Consumption (Air-to-Water Ratio) | ≤3:1 (Aeration energy consumption and blower investment reduced by over 30% compared to conventional MBR) |
Process Advantages
Cost Efficiency & Capacity Enhancement: The high-flux design directly reduces membrane tank footprint and membrane module procurement costs.
Effluent Quality: High membrane fiber integrity ensures effluent turbidity of <1 NTU, allowing direct feed into reverse osmosis (RO) for advanced treatment, suitable for water reuse applications.
Energy-Efficient Operation: The low air-to-water ratio significantly reduces aeration energy consumption, lowering electricity usage and carbon footprint.
Applicable Scenarios: New construction or upgrading and expansion of municipal wastewater treatment plants, centralized treatment of industrial park wastewater, decentralized wastewater reclamation and reuse.
Technical Exchange and Industry Feedback
During the exhibition, the Shuiyi Membrane booth welcomed professional visitors from global power companies, municipal design institutes, engineering firms, and end-users. The sales and technical teams engaged in in-depth discussions around the following topics:
- Long-term stability of reverse osmosis membranes under high-salinity conditions
- Application cases of ultrafiltration in power plant wastewater treatment
- Energy consumption comparison of fifth-generation MBR systems in low-carbon wastewater plants
Several potential partners expressed strong interest in the product performance and have initiated technical discussions for further cooperation.
Summary and Outlook
Shuiyi Membrane Technology Development Co., Ltd. continues to advance its R&D capabilities in membrane materials and process technologies.
The “Dual-Engine Membrane Solutions” presented at CIEPEC have already been successfully validated in multiple power and municipal projects.
Looking ahead, the company will further develop advanced RO membranes with higher rejection and lower energy consumption, expanding applications in zero liquid discharge (ZLD) and high-strength wastewater treatment.
