Yasser Attia Attia Thanks for the question. Nanotechnology can treat the high saline nature of well water but the overall process is quite lengthy and may also involve the extra expenditure for its establishment.
The use of Carbon nanotubes and capacities deionization are two major processes that have the tendency to treat saline water.
Two major companies such as NanOasis and NanoH20 are working with the membranes and other additives to treat the saline water.
I will be sharing some data with you. Please check it. The following articles might be helpful for you.
Article Nanotechnology for sustainable water treatment – A review
https://www.nature.com/articles/s41565-018-0234-8
Article Overcoming Implementation Barriers for Nanotechnology in Dri...
There are still many unknowns in the world of water desalination, however, one thing is known for sure, the techniques of the past are not the solution to the world's water treatment problem. The primary method of reverse osmosis is the most effective but has its limitation. Reverse osmosis requires a high input of energy to produce clean water. In addition, the membranes used in reverse osmosis have glaring downsides. With a predisposition to failing due to fouling and a lack of self-maintenance, plants are forced to produce a high amount of membranes and shut down portions of the site in order to replace them. All processes have their flaws, but nanotechnology aids to remedy them. Nanotechnology streamlines the process of water desalinization, making it a viable option on the industrial level. The NAWADES project and NanoH2O have proved this with their research into new technologies for desalination.
To add to it, bioremediation methods towards pollutants aren't that effective. specially textile dyes structure are very complex in nature and very resistant to biological organism. also, the biodegradation operation is complex, and microorganisms can easily die due to changes in culture condition which drastically effect the applicability. If you take examples of advanced oxidation process using nanoparticles, it releases a lot of toxic byproducts (>TOC or COD level ).
i suggest using biochar or activated carbon when it comes to cost and versatile nature towards toxic pollutants. The only issue could be recyclability after some cycles which may significantly increase the cost.
here are some articles if you would like to go through
Article A brief commentary on activated carbon material as an effici...
Chapter Application of Biochar for Wastewater Treatment
Article Research progress of biochar activation technology and bioch...