Molecular sieve manufacturer explains molecular sieve and environmental protection: groundwater treatment

Among various novel applications of molecular sieves, the treatment of groundwater pollution indeed deserves special attention. The quality of groundwater depends on the nature and concentration of pollutants that should be removed to provide a source of water for human use.
According to traditional methods, treatment is accomplished using a "pumping treatment" technique, which involves pumping groundwater out, treating it on the ground, and then injecting it back into the ground. Although widely used, this technology still has many drawbacks, as it is costly due to long operation times and the large amount of energy required to pump water. To overcome these limitations, there is another new technology based on so-called permeable reactive barriers, which allow groundwater to be directly treated without pumping to the ground.
Depending on the type of treatment, permeable reactive barriers are classified into different types:
① The material used for the adsorbent canopy is an adsorbent similar to granular activated carbon;
② Biological barriers that utilize native bacterial populations to destroy organic pollutants without leaving toxic substances behind;
③ Chemical barriers are based on the use of materials that can convert organic pollutants into less toxic substances or reduce certain heavy metals to non-toxic species.
Compared to adsorbent barriers, biological barriers and chemical barriers have more advantages because in principle neither requires regeneration. However, in the case of the use of chemical barriers, there are some major shortcomings, which are related to the limitations of their application scope, relatively slow degradation reaction kinetics, and the overall life of the material. The total lifetime of a material depends on the nature and concentration of the chemicals dissolved in groundwater.
In this case, molecular sieves may be an attractive option due to their special ion exchange and adsorption properties. For example, cheap and abundant natural zeolite is widely used to remove organic pollutants from water. They have also been applied in several important areas, such as the treatment of radioactive waste generated in nuclear power plants or contaminated by nuclear accidents; In addition, they can also be applied to some forward-looking fields, such as in the development of advanced equipment or the storage of radioactive waste in the deposits of mordenite and clinoptilolite.
Many experiences have also demonstrated the advantages of using molecular sieves, including: high adsorption capacity; It is hydrophobic to substances with high relative molecular weight and organic cations present in groundwater; Maintain good structural stability even after long-term immersion in water; It is possible to achieve regeneration of its initial adsorption capacity through simple heat treatment. These advantages are sufficient to partially offset the high cost compared to traditional materials, making molecular sieve based technology eager for wider applications in the future. Hunan Providence New Materials Co., Ltd is a professional molecular sieve manufacturer which can provide USY zeolite, NaY zeolite, REY zeolite, ZSM-5 zeolite, welcome to consult.