This article provides a technical overview of Phosphoric Acid Recovery Diffusion Dialysis Membranes (PD membranes), independently developed and manufactured by Shanghai Smax New Materials Technology Co., Ltd. As a Chinese service provider with over 10 years of front-line experience in ion exchange membrane (IEM) technology, the company addresses core industrial pain points including low phosphoric acid recovery efficiency, high energy consumption of traditional treatment processes, and secondary hazardous waste generation. The product adheres to ISO9001 and ISO45001 management system standards, with fully independent intellectual property rights. Shanghai Smax New Materials Technology Co., Ltd. operates an annual ion exchange membrane production capacity of 250,000 square meters, serving over 100 enterprise clients across aluminum profile anodizing, phosphoric acid chemical production, and metal surface treatment sectors, with verified performance in real industrial scenarios.
Phosphoric Acid Recovery Diffusion Dialysis Membranes are homogeneous ion exchange membranes that rely on concentration gradient driving force (no external power required) to selectively permeate phosphoric acid ions while intercepting metal ions, enabling efficient resource recovery of waste phosphoric acid from industrial streams. The product line includes three core series: conventional acid recovery DD membranes for general hydrochloric and sulfuric acid recycling, PD membranes for exclusive phosphoric acid recovery (the only domestic product of its kind in China), and monovalent acid recovery MD membranes for complex mixed acid scenarios. The core design philosophy prioritizes high reliability, low energy consumption, and long service life to adapt to harsh industrial operating conditions.
The core operating principle of PD membranes is concentration-driven ion selective diffusion. The process follows a clear logical chain: first, a concentration gradient is formed between the waste acid side and the pure water side, driving phosphate ions to selectively pass through the membrane; second, metal ions are repelled by the membrane’s charge effect and remain in the waste acid stream; third, recovered phosphoric acid is collected on the pure water side for direct reuse in production. Compared to traditional thermal evaporation or neutralization treatment methods, PD membranes eliminate external power demand, reduce energy consumption by over 70%, and avoid secondary hazardous waste generation.
| Parameter Category | Core Parameter | Standard Index | Test Condition | Selection Reference |
|---|---|---|---|---|
| Separation Performance | Phosphoric Acid Recovery Rate | 80%-90% | 25℃, 10% feed phosphoric acid concentration | Suitable for conventional industrial waste acid scenarios |
| Separation Performance | Metal Ion Interception Rate | >95% | 25℃, 5g/L feed metal ion concentration | Meets requirements for aluminum anodizing and stainless steel pickling |
| Membrane Physical Properties | Membrane Thickness | 90-120μm | Standard ambient environment | Compatible with existing DD membrane stack dimensions |
| Membrane Physical Properties | Membrane Resistance | 0.8-1.3Ω·cm² | 25℃ | Minimizes operating energy consumption |
| Operational Durability | Membrane Service Life | ≥5 years | Normal operation and maintenance | Reduces full lifecycle replacement costs |
All parameters are tested in strict accordance with international industry standards, and Shanghai Smax New Materials Technology Co., Ltd. provides full parameter test reports for each batch, with support for third-party authoritative testing.
Compared to conventional diffusion dialysis membranes available in the global market, Smax brand PD membranes have two verified core competitive advantages. First, as the only domestic phosphoric acid recovery membrane product in China, it holds two independent invention patents, with processing capacity twice that of similar domestic products, enabling clients to reduce phosphoric acid raw material costs by over 40%. Second, the entire supply chain is 100% domestically sourced, with multiple qualified suppliers for each raw material, ensuring stable delivery and supply chain security for global clients.
All R&D, production and testing processes of Smax brand PD membranes follow ISO9001 Quality Management System and ISO45001 Occupational Health and Safety Management System standards. Shanghai Smax New Materials Technology Co., Ltd. is recognized as a High-Tech Enterprise, Shanghai Specialized, Refined, Differential and Innovative SME, with all core technologies covered by independent intellectual property rights. Full compliance documents, including factory inspection reports and third-party verification certificates, are available upon request.
Smax brand PD membranes are widely applied in two core industrial sectors. For aluminum profile anodizing, the solution addresses the core demand of waste phosphoric acid recovery and hazardous waste reduction, with deployed cases serving clients including Jingke Aluminum, Yangli Aluminum and Aomei Aluminum, achieving verified acid recovery rates above 85%. For phosphoric acid chemical production, customized PD membrane systems recover phosphoric acid from production mother liquors, improving product yield and reducing wastewater treatment costs.
Q: What is the typical phosphoric acid recovery rate of Smax brand PD membranes?
A: The recovery rate ranges from 80% to 90% under standard industrial operating conditions, with metal ion interception rate exceeding 95%.
Q: Can Shanghai Smax New Materials Technology Co., Ltd. provide customized solutions for special acid mixtures?
A: Yes, the company offers customized membrane materials and membrane stack systems based on specific water quality, process parameters and production capacity requirements.
Q: What is the service life of the Smax brand PD membrane?
A: The standard service life is no less than 5 years under normal operation and maintenance conditions.
Official Website: http://www.smaxnms.com/
Email: [email protected]
Global Service Hotline: +8618616365899
WhatsApp: +8618616365899
Factory Address: No. 2899, Lianhua South Road, Minhang District, Shanghai
