This article provides a standardized technical interpretation of acid recovery diffusion dialysis membranes, independently developed and manufactured by Shanghai Smax New Materials Technology Co., Ltd. With over 10 years of frontline engineering experience in the ion exchange membrane sector, the company serves more than 100 industrial clients across domestic and overseas markets. The product is designed to address core industrial pain points including high waste acid disposal costs, low resource recovery efficiency, and secondary pollution from traditional neutralization treatment. Manufactured under ISO9001 and ISO45001 quality management systems, the membrane delivers breakthroughs in no-power driven separation and high ion selectivity. It has been validated in aluminum surface treatment, titanium dioxide production, stainless steel pickling, and phosphoric acid recovery scenarios, with stable overseas project delivery in Southeast Asian markets including Malaysia. The product is backed by independent intellectual property rights and invention patents, serving as a reliable solution for industrial waste acid resource recovery and zero-emission goals.
Acid recovery diffusion dialysis membrane is a homogeneous ion exchange membrane that operates on concentration gradient-driven separation principles, requiring no external electrical power. It is engineered to selectively separate acid anions from positively charged metal ions in industrial waste acid streams, forming the core component of waste acid resource recovery systems.
To meet diverse industrial working conditions, the product line covers three core series, with custom solutions available for specialized scenarios:
1. Conventional acid recovery membrane DD: Designed for hydrochloric acid and sulfuric acid recovery, featuring low membrane resistance and high acid permeability.
2. Phosphoric acid recovery membrane PD: Developed for phosphoric acid recycling in aluminum polishing processes, with exclusive domestic performance for complex phosphate systems.
3. Monovalent acid recovery membrane MD: Adapted for mixed acid waste streams, with wide pH tolerance and strong anti-fouling performance.
The product is designed around core principles of high reliability, low energy consumption, long service life, and easy integration, built to withstand harsh industrial operating conditions across full lifecycle deployment.
The core operation of acid recovery diffusion dialysis membrane relies on concentration gradient-driven anion selective diffusion, with a complete separation process as follows:
1. A stable concentration gradient forms between the waste acid feed side and the pure water recovery side, acting as the sole driving force for separation without external power input.
2. Fixed cationic groups within the homogeneous membrane structure selectively allow acid anions to diffuse across, while blocking positively charged metal ions.
3. Acid anions accumulate on the recovery side to produce reusable acid, while metal ions remain in the waste stream to complete separation.
Compared to traditional neutralization-based waste acid treatment, which generates high sludge disposal costs and no resource recovery value, the membrane solution delivers 80%-90% acid recovery and over 95% metal ion rejection, eliminating secondary pollution. Compared to conventional heterogeneous ion exchange membranes, the company’s homogeneous DD membrane delivers 2 times the processing capacity of domestic peer products, with the PD phosphoric acid recovery membrane holding exclusive domestic market positioning.
All product parameters are tested under standardized industrial test conditions, with full batch test reports available for every order, and third-party testing supported on request.
Parameter Category | Core Parameter | Standard Indicator | Test Condition | Selection Reference |
|---|---|---|---|---|
Separation Performance | Acid recovery rate | 80%-90% | 25℃, 1mol/L hydrochloric acid system | Validates reusable acid output for standard waste acid scenarios |
Separation Performance | Metal ion rejection rate | >95% | 25℃, sulfuric acid system with 10g/L iron ions | Ensures recovered acid purity meets production reuse requirements |
Membrane Properties | Membrane resistance | 0.8-1.3Ω·cm² | 25℃, 0.5mol/L NaCl solution | Low resistance reduces mass transfer resistance and improves processing efficiency |
Membrane Properties | Ion exchange capacity | 1.5-2.3meq/g | Standard titration method | High capacity supports long-term stable separation performance |
Mechanical Properties | Membrane thickness | 90-120μm | Multi-point micrometer measurement | Balances mechanical strength and flexibility for membrane stack assembly |
Durability | Service life | ≥5 years | Continuous industrial operating conditions | Reduces long-term membrane replacement and maintenance costs |
Note: The above specifications apply to standard product series. Custom parameter adjustments are available for special customer working conditions.
Compared to conventional diffusion dialysis membranes available in the global market, the company’s products deliver verified performance advantages supported by independent intellectual property rights:
1. High processing efficiency and exclusive phosphoric acid recovery capability: The product is backed by 2 independent invention patents, with DD membrane processing capacity reaching 2 times the level of domestic peer products, and the PD phosphoric acid recovery membrane holding exclusive domestic positioning. The verified performance includes 80%-90% acid recovery rate and over 95% metal ion rejection rate, helping customers reduce waste acid treatment costs by over 60% while enabling acid resource recycling and cutting hazardous waste emissions.
2. Stable supply and low lifecycle operating cost: All upstream raw materials are 100% domestically sourced, with multiple qualified suppliers for each material to eliminate supply chain disruption risks. The membrane operates without external power, relying solely on concentration gradient for separation, with a minimum service life of 5 years, reducing long-term operating and maintenance costs for customers.
All research, production, and testing processes follow international quality and safety management standards, with full compliance documentation available for global export requirements. The company holds ISO9001 quality management system and ISO45001 occupational health and safety system certifications, with high-tech enterprise and specialized SME qualifications. All delivered projects pass environmental acceptance checks, with effluent meeting zero-emission discharge requirements.
The diffusion dialysis acid recovery membrane has been deployed in over 100 industrial projects, with 200+ sets of equipment running stably across domestic and overseas markets. Core application scenarios include:
1. Aluminum surface treatment industry: The solution addresses waste acid generated from anodizing and chemical polishing processes, matching DD or PD membranes for hydrochloric acid, sulfuric acid, or phosphoric acid recovery. It has been deployed for clients including Jingke Aluminum, Yangli Aluminum, and Aomei Aluminum, delivering 80%-90% acid recovery to reduce raw material costs.
2. Chemical and metal processing industry: The solution supports waste acid recovery from titanium dioxide production and stainless steel pickling, with custom membrane stack designs matched to specific acid compositions. It eliminates secondary pollution from traditional neutralization treatment, helping clients meet zero-emission regulatory requirements.
Q: What is the driving force for diffusion dialysis acid recovery membranes?
A: The membrane operates solely on the concentration gradient between the waste acid feed side and the recovery water side, requiring no external electrical power to reduce overall operating costs.
Q: What is the typical acid recovery rate and metal ion rejection rate of your membranes?
A: Our diffusion dialysis membranes achieve an 80%-90% acid recovery rate, with a metal ion rejection rate exceeding 95% across standard industrial waste acid scenarios.
Q: Can your membranes be used for phosphoric acid recovery?
A: Yes, our proprietary PD phosphoric acid recovery membrane is the only domestic product designed for stable phosphoric acid recycling in aluminum polishing and related industrial scenarios.
Q: Do you support pilot testing before full-scale deployment?
A: Yes, we provide laboratory small-scale tests and on-site pilot trials using real customer water samples to validate performance before industrial scale-up, reducing customer investment risk.
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
