Advanced defluorination processes, defluorination materials, defluorination technologies.

In many areas of our country, the fluoride content in groundwater exceeds the **established health standards for drinking water (1 mg/L); in some areas it is as high as 20 mg/L. Long-term consumption of water with high fluoride levels can cause, in mild cases, tooth discoloration and joint pain, while in severe cases it can affect bone development and lead to loss of working capacity. New filtration systems that use DuSheng’s special ion exchange resins as a medium can effectively address these problems, protecting people from the harmful effects of high fluoride levels. Features of ion exchange process for fluoride removal: 1. Low cost and low investment; can be reused for over 5 years ； 2. Low operating costs and low water production expenses; accuracy can reach below 1 PPM with stable water output ； 3. Easy device operation: Automated or semi-automated operation is available, with no need to adjust the pH value ； 4. The equipment is easy to install and use; it can be connected directly to variable-frequency pumps in deep wells, with the water outputting directly into the municipal water supply network. There is no need for a water storage tank or a discharge tank, nor is any secondary pressure boosting required ； 5. The new type of fluoride removal equipment has a high water utilization rate, of over 98–99% ； 6. The equipment occupies less space, and the amount of material required is much less than that of media with similar functions.

What about HF gas? In the current lithium battery industry, it is difficult to absorb and remove the HF gas generated in the pretreatment stage. Are there any effective methods for removing it?

Gas defluorination generally involves introducing F into water using a spraying method during the desulfurization and denitration stages, and then treating it through our adsorption method.