Breaking the Barrier of Strong Acid Separation with Jiuwu Hi-Tech NF-A Acid Resistant Nanofiltration Membrane

There are many processes in industrial production that generate acidic wastewater, and the treatment of these acidic wastewater places extremely high demands on acid resistant separation technology. With its profound technical accumulation and innovation capabilities, Jiuwu Hi-Tech has launched the NF-A acid resistant nanofiltration membrane product, which is specifically designed to address the separation and application problems under extremely strong acid conditions. This has brought efficient and reliable solutions to the treatment of titanium dioxide pickling water, metal processing wastewater, and new energy wastewater.

Three major advantages of NF-A acid resistant nanofiltration membrane

The NF-A acid resistant nanofiltration membrane has undergone strict quality testing and practical project validation. It can operate stably under various complex working conditions, providing reliable performance guarantee for users. Whether it is short-term high-intensity operation or long-term continuous use, it can maintain excellent separation effect and anti pollution performance.

Strong acid resistance

NF-A acid resistant nanofiltration membrane can operate stably in extremely harsh strong acid environments, with a stable desalination rate of over 97% for MgSO4, demonstrating excellent acid resistance. It can achieve material separation in high-strength acid solutions such as 30wt% sulfuric acid, 20wt% hydrochloric acid, 20wt% nitric acid, and 20wt% phosphoric acid. This means that in practical applications, whether dealing with high concentration acidic wastewater or material separation in strong acid systems, the membrane has excellent performance and can provide solid guarantees for the continuity and stability of the production process.

Good separation performance

The pore size of the nanofiltration membrane is in the range of 0.6nm. The molecular weight cutoff is around 200 Daltons. It has the ability to accurately separate small molecules. This precise separation ability enables it to perform well in application scenarios such as material separation and concentration in acidic solutions, recovery and purification of organic acid solutions, etc. For example, in the process of recovering organic acid solutions, it can intercept metal ions in acid solutions, selectively pass through acid solutions such as sulfuric acid, and efficiently separate the target organic acid from other impurities, thereby improving the recovery purity and efficiency.

High anti-pollution performance

NF-A acid resistant nanofiltration membrane has a low flux attenuation rate during long-term operation, and the filtration performance of the membrane can be relatively stable without frequent cleaning or replacement of membranes, greatly extending the service life of the membrane and reducing operating costs. For enterprises, it not only reduces the workload and downtime of equipment maintenance, but also reduces overall operating costs and improves economic benefits.

NF-A acid resistant nanofiltration membrane has special chemical stability and can operate stably in strong acidic environments for a long time, while maintaining a high retention rate for high valence ions. It has been successfully applied in titanium dioxide acidic wastewater projects. In the treatment of acidic wastewater from titanium dioxide, the traditional neutralization method generates a large amount of waste residue, while the acid resistant nanofiltration membrane technology realizes the resource utilization of acidic wastewater to avoid the problem.

The first-wash wastewater from titanium dioxide production in this project mainly contains high concentrations of sulfuric acid, iron ions, ferrous ions and other metal impurities. The acid concentration of the water quality on site fluctuates greatly. The customer uses NF-A acid-resistant nanofiltration membrane to effectively separate these impurities, and the stable iron ion removal rate can reach more than 93%, achieving a wastewater reuse rate of more than 80%, greatly reducing new water consumption, and reducing operating costs by recycling sulfuric acid and water resources.

NF-A acid-resistant nanofiltration membrane is not only a technological breakthrough, but also provides an efficient, stable and sustainable solution for the industrial field to cope with the challenges of harsh acidic environments. From significantly improving the wastewater reuse rate and reducing new water consumption to effectively recovering valuable acid resources and reducing solid waste generation. NF-A acid-resistant nanofiltration membrane is helping many industrial customers achieve a win-win situation in economic and environmental benefits, and promoting the transformation and upgrading of the industry towards greening and resource utilization.