Activated alumina ball defluorination agent is also called water treatment defluoridation and arsenic removal activated alumina ball, activated alumina defluorination agent. The appearance is white pellets, which has the characteristics of large fluorine removal capacity, good physical properties, high strength, no softness after soaking in water, no expansion, no cracking, easy regeneration, and long life.
1. Why do we need to clean the activated alumina ball defluorinator regularly?
As the activated alumina ball for fluoride removal in water treatment, after a period of use, impurities in the water will cause the surface to appear yellowish brown, or adsorb a large amount of fluoride ions, the adsorption reaches saturation, and the fluorine removal effect is significantly reduced. At this time, it needs to be carried out in time Regenerated.
2. What are the benefits of cleaning the activated alumina ball defluorinator regularly?
In the course of use, the regeneration treatment can be carried out at intervals to make the activated alumina ball continue to be used. Activated alumina balls can restore the adsorption performance and use them to make their lifespan reach 6-8 years, which is enough to extend the use time and save costs. This is a low-cost and cost-effective product.
3. What is the regeneration treatment method of activated alumina ball defluorinating agent?
a. When the fluorine content of the water reaches a high level, it should be regenerated. Sodium hydroxide solution or aluminum sulfate solution is used as the regeneration liquid. When sodium hydroxide is used for regeneration, the regeneration process can be divided into four stages: first backflushing, regeneration, second backflushing and neutralization.
b. When aluminum sulfate is used for regeneration, there are three stages of first backflushing, regeneration and second backflushing. The first backwashing filter layer expansion rate can be 30%-50%, the backflushing time can be 10-15min, and the washing intensity depends on the size of the filter material, generally 12-16L/m2.s can be used. The regeneration solution should pass through the filter layer from top to bottom.
c. The flow rate, concentration and amount of the regeneration solution can be used in accordance with the following regulations: Aluminum sulfate regeneration: the concentration is 2% to 3%, and the consumption of aluminum sulfate can be calculated based on the 60-80g solid aluminum sulfate needed to remove 1g of fluoride. The regeneration time can be 8-12h, and the regeneration solution in the filter tank must be emptied after regeneration.
4. Simple regeneration defluoridation method of household defluoridation agent
a. Configure hydrochloric acid solution, use hydrochloric acid solution to clean the activated alumina ball
b. According to the content of fluoride, it is calculated that the quality of aluminum sulfate is needed and then the aluminum sulfate solution is prepared. The fluorine-absorbed activated alumina ball defluorinator is soaked in the aluminum sulfate solution for about 30 hours.
c. Pour out the solution after regeneration, add clean water and wash repeatedly.
