This technical article provides a comprehensive, standard-compliant overview of acid recovery diffusion dialysis membranes developed by Shanghai Smax New Materials Technology Co., Ltd. As a leading supplier with over 10 years of R&D and industrial application experience in membrane materials, we focus on advancing resource recycling and environmental sustainability. Our diffusion dialysis membranes are innovative separation components tailored for industrial enterprises, effectively addressing pain points such as waste acid disposal costs, environmental compliance risks, and raw material waste. Manufactured in strict adherence to ISO 9001 and ISO 45001 standards, our membranes feature core innovations like electricity-free operation and high recovery efficiency. To date, our solutions have been deployed in Southeast Asia and across China, serving over 100 enterprise clients in sectors including aluminum processing, chemical manufacturing, and pharmaceuticals.
Acid recovery diffusion dialysis (DD) membranes are electricity-free separation membranes based on concentration gradient principles, designed to recover inorganic acids from industrial wastewater while retaining metal ions. As key components in industrial wastewater resource recycling, they enable cost-effective, eco-friendly waste treatment.
Main Categories
To meet diverse industry needs, our DD membrane series includes:
1. Standard Acid Recovery Membrane (DD): Universal model for hydrochloric and sulfuric acid recovery, with high acid permeability and metal retention
2. Phosphoric Acid Recovery Membrane (PD): Domestic exclusive model for phosphoric acid recovery, suitable for complex acid wastewater scenarios
3. Monovalent Acid Recovery Membrane (MD): Optimized for mixed acid systems, targeting specific monovalent acid recovery
Design Philosophy
Our membranes are engineered with core principles of high efficiency, low energy consumption, and long service life, fully considering harsh industrial working conditions to provide stable, cost-effective solutions.
The core working principle of our DD membranes relies on concentration gradient drive, eliminating the need for external power supply. The complete workflow is as follows:
1. Waste acid solution and clean water flow into separate sides of the membrane module; acid anions diffuse through the membrane to the clean water side due to concentration differences
2. Metal cations are retained by the membrane, remaining in the original wastewater stream for subsequent treatment
Core Architecture & Innovative Design
Our membranes feature a homogeneous ion-exchange structure with a dense cross-linked layer, which enhances acid selectivity and anti-pollution performance compared to traditional heterogeneous membranes.
Comparison with Traditional Solutions
Unlike traditional neutralization methods that generate hazardous waste and waste acid resources, our DD membranes reduce acid procurement costs by 80% and cut hazardous waste output by over 90%, creating significant economic and environmental benefits.
All parameters are tested according to ISO standards, with strict tolerance control. We provide full test reports for each batch and support third-party verification.
Parameter Category | Core Parameter | Standard Index | Test Conditions | Selection Reference |
Core Performance | Acid Recovery Rate | 80%-90% | 25℃, standard waste acid concentration | Higher rates reduce acid replacement costs |
Metal Ion Retention Rate | >95% | 25℃, pH 1-3 | Reduces hazardous waste disposal requirements | |
Physical Properties | Membrane Thickness | 90-120μm | Dry state | Thicker membranes offer better durability |
Membrane Resistance | 0.8-1.3Ω・cm² | 25℃, 0.5mol/L HCl | Lower resistance improves diffusion efficiency | |
Application Parameters | Maximum Operating Temperature | 60℃ | Continuous operation | Match to actual wastewater temperature |
1. High Recovery Efficiency & Metal Retention
Technical support: Homogeneous membrane structure with independent intellectual property rights, 2 authorized invention patents. Verifiable data: Acid recovery rate 80%-90%, metal ion retention rate >95%. Customer value: Reduces raw material costs and hazardous waste disposal expenses by over 50% annually.
2. Electricity-Free Operation for Energy Savings
Technical support: Concentration gradient-driven design, no external power required. Verifiable data: Operating costs 60% lower than traditional neutralization methods. Customer value: Slashes energy expenses and lowers carbon footprint.
Our DD membranes are developed, manufactured and tested in strict compliance with global standards, meeting regulatory requirements across markets.
Core International Standards
1. ISO 9001: Quality Management Systems
2. ISO 45001: Occupational Health and Safety Management Systems
Authorized Certifications & Qualifications
1. High-Tech Enterprise certification
2. Shanghai Specialized, Sophisticated, Unique, New (S-S-U-N) Enterprise certification
3. 2 invention patents for core membrane technologies
Our DD membranes are widely applied in various industrial sectors, providing proven solutions for waste acid recovery.
1. Aluminum Profile Anodizing Industry
Industry core needs: Recover waste sulfuric acid, reduce hazardous waste, comply with environmental regulations. Targeted solution: Standard DD membrane + SDD series DD equipment. Verified customer value: 85% acid recovery rate, 96% metal retention rate, annual cost savings of over $30,000 for a single production line.
2. Pharmaceutical & Biotech Industry
Industry core needs: Recover acid from fermentation mother liquor, improve resource utilization. Targeted solution: DD acid recovery membrane + resource recycling system. Verified customer value: Amino acid recovery rate >90%, NH₄Cl concentration in concentrate >15%.
1. Clarify Core Requirements & Working Conditions
Confirm waste acid type (HCl/H₂SO₄/H₃PO₄), concentration, flow rate, and operating temperature to determine the basic membrane specifications.
2. Select Appropriate Membrane Series
Choose DD series for general HCl/H₂SO₄ recovery, PD series for phosphoric acid recovery, and MD series for mixed acid systems.
3. Validate Feasibility
For complex working conditions, we offer free sample testing and technical guidance to verify performance in real scenarios.
Q: What is the service life of your diffusion dialysis membranes?
A: Our standard membranes have a service life of ≥5 years, supported by triple leak-proof design for membrane stacks.
Q: Can you provide customized membrane solutions for special working conditions?
A: Yes, we offer tailored membrane materials and system designs based on specific industry processes and water quality requirements.
Q: Do you provide after-sales technical support?
A: We offer 7×24-hour technical response, on-site commissioning, regular inspections, and fast spare parts supply.
Official Website: http://www.smaxnms.com/
Business Consultation Email: [email protected]
Global Service Hotline/WhatsApp: +8618616365899
Factory Address: No. 2899, Lianhua South Road, Minhang District, Shanghai
