1. Identification of the Material Product Name: NEWDEF®2 DEFLUORIDATION MEDIA Recommended Use: Removal of excessive fluoride in drinking water
2. Material Origin and Physical Properties Material Origin: Biological Material Physical State: Solid Sheet Color: Gray Solubility: Insoluble in water Bulk Density: 0.98 g/ml Particle Size: 0.5mm~1.5mm
3. Toxicological Information Ingestion: No adverse effects expected Skin contact: Not expected to be a skin irritant Eye contact: No an eye irritant. No physical irritation
4. Mechanism Defluoridation mechanism: The binding of fluoride ion to Ca2+ on NEWDEF® 2 surface while OH- will be released
5. Defluoridation Capacity Thedefluoridation capacity of NEWDEF® 2 is about 2~5 mg/g which is higher than normal media in the same conditions. The capacity is changed by different raw water quality including fluoride concentration、temperature、co-existing ions etc..
6. Technical Advantages Ø High capacity and shorter contact time Ø Safety, no dissolution of toxic and hazardous substances Ø High efficiency, NEWDEF®2 can remove 99% fluoride of the raw water. Thereby the treated water could be mixed with the raw water in order to reduce the operating costs and extend the operation cycle. Ø Steady capacity under other ionic competition Ø Lower regeneration cost and simple regeneration process Ø Not only for fluoride removal but also can removal of iron and manganese
7. Performance Comparison Figure 1 and Figure 2 demonstrate that the NEWDEF® media have higher performance than other common defluoridation materials under the same conditions. The treated water volume of NEWDEF is About 5.09—11.7 times of activated alumina and 12.9—23 times of activated clinoptilolite.
Figure 1. The volume of water treated by different media under the same conditions, the concentration of fluoride is 6mg/L in raw water
Figure 2. The volume of water treated by different media under the same conditions, the concentration of fluoride is 2mg/L in raw water
Fluoride in waste water
Sodium hydroxide regeneration: It’s an opposite reaction of defluoridation mechanism. OH- replace F- on NEWDEF® 2 surface.