Fluoride Removal Filter

Product Detail

Activated alumina adsorption and filtration is the most mature technology, the most widely used and effective method for fluoride removal. Activated alumina is a two sex material, in water with ion exchange, isoelectric point of about pH=9.5, when the water pH value is less than 9.5 can be adsorbed anions, when the water pH value is greater than 9.5 can be adsorbed cations, so in the acidic solution of active alumina as anion exchange agent, the fluoride has great selectivity.

Working principle

Fluoride exists widely in nature. The fluoride content in natural water is generally 0.3~0.5mg/L. Through the fluoride layer of groundwater, sometimes can be as high as 2-5 mg/L. People from the daily food and water intake of a certain amount of fluorine, has anti caries effect to tooth. Excessive intake of fluoride can cause chronic poisoning. Mild cases of tooth enamel, joint pain, severe skeletal development is affected, the loss of labor, water fluorine in reverse osmosis (RO) equipment containing fluoride, a direct impact on RO membrane life, China's "living standards for drinking water, fluoride content in water is less than 1.0 mg / L. The fluoride removal, the use of adsorption filtration, the fluoride in drinking water by activated alumina fluoride adsorption, fluoride is adsorbed on the adsorbent surface and the formation of insoluble fluorides, when removing fluorine down to a certain limit value (saturated), through the regeneration recycling agent, restore adsorbent for fluoride removal capacity. Cleaning and regeneration of the aluminum sulfate, the amount and for removing fluorine content ratio of 60:1, regeneration concentration of 1-2%, the operation of 3 to 4 months with a concentration of 3.5% HCl solution cleaning time, cleaning after available in addition to fluoride water flushing, time 8~10min.