Diffusion Dialysis Membrane Complete Equipment Technical Guide from Shanghai Smax New Materials Technology Co Ltd

This technical article provides a standardized overview of complete diffusion dialysis membrane equipment, developed and manufactured by Shanghai Smax New Materials Technology Co., Ltd. As a leading provider in membrane materials for industrial wastewater treatment with over 10 years of R&D and industrial application experience, we focus on driving green industrial transformation. Our customizable diffusion dialysis equipment is designed for inorganic waste acid recovery, addressing core industry pain points including high waste acid disposal costs, excessive salt waste generation, and heavy new acid consumption. Strictly adhering to ISO 9001 and ISO 45001 standards, our equipment achieves 2x higher treatment efficiency than domestic peers, with an exclusive phosphoric acid recovery membrane. It has been deployed in global markets including Southeast Asia, serving over 100 enterprise clients, and holds national invention patents, certified as a high-tech and specialized enterprise in China.

Technical Definition

Complete diffusion dialysis membrane equipment is a passive, energy-efficient wastewater treatment system that uses concentration gradients to separate acid ions from metal-containing waste acid streams, enabling acid recovery and metal ion retention without external power. Based on selective ion exchange membrane technology, it serves as a critical component for waste acid recycling and resource utilization in heavy industries. Our equipment includes the SDD series (SDD-30/55/110/160/160S) for standard applications, plus customizable configurations for special operating conditions. Our design centers on energy efficiency, high recovery rates, low maintenance, and scenario-specific customization to meet diverse industrial needs.

Technical Principle

The core working principle relies on diffusion dialysis driven by concentration differences. The operational process follows four key steps:
1. Waste acid feed enters the membrane stack, making contact with selective ion exchange membranes
2. Acid ions diffuse through the membrane into the recovery chamber, while metal ions are blocked
3. Recovered acid is collected for reuse in production processes
4. Metal-rich waste stream is discharged for further treatment or resource recovery.
Our innovative architecture includes a proprietary selective membrane module (with exclusive phosphoric acid recovery capability) and an automated control system for stable, unmanned operation. Compared to traditional neutralization methods that generate large volumes of salt waste and incur high costs, our equipment eliminates power consumption, reduces acid procurement costs by 51%, and cuts alkali costs by 62%.

Technical Specifications

Note: Customized configurations are available for specific acid types, concentrations, and processing volumes.

Core Technical Advantages

1. High Efficiency & Cost Reduction: Our equipment delivers 2x higher treatment efficiency than domestic competitors, with acid recovery rates of 80-90% and metal rejection rates over 95%. This translates to annual cost savings of approximately 1.8 million RMB per client, verified by industrial applications with PetroChina and Shenhua Group.
2. Exclusive Technology: We hold the only domestic phosphoric acid recovery membrane technology, supported by 2 national invention patents (ZL202110932816.8, ZL202111067052.7).
3. Reliable & Low Maintenance: All products comply with ISO 9001 and ISO 45001 standards, with membrane lifespan exceeding 5 years. We provide 7x24 technical support, on-site commissioning, and fast spare parts supply.

Technical FAQ

Q: What types of waste acid can your diffusion dialysis equipment handle?
A: Our equipment supports recovery of hydrochloric, sulfuric, phosphoric, and mixed acids, widely used in aluminum profile, titanium dioxide, stainless steel pickling, and electronic etching industries.
Q: Can you provide pilot testing before full-scale deployment?
A: Yes, we offer lab-scale and on-site pilot testing using real wastewater samples to verify treatment efficiency and cost savings before industrial implementation.
Q: Is your equipment compliant with international environmental standards?
A: All processes follow zero-emission and resource utilization principles, with effluent meeting Grade III surface water standards, fully compliant with national environmental regulations.

Contact Us

Official Website: http://www.smaxnms.com/
Business Consultation Email: [email protected]
Global Service Hotline: +8618616365899
WhatsApp: +8618616365899
Factory Address: No. 2899, Lianhua South Road, Minhang District, Shanghai, China