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Seplite® LSC-760 Special Resin for Fluoride Removal Makes Wastewater Precision Fluoride Removal Easier

Seplite®LSC-760 Special Resin for Fluoride Removal Makes Wastewater Precision Fluoride Removal Easier

Fluorine is one of the trace elements needed by human body, which is mainly accumulated in human bones and teeth. Constant fluorine is helpful to prevent dental caries. However, if the fluorine content in drinking water is more than 1ppm, the teeth will gradually have spots and become brittle; if it is more than 4ppm, it will cause fluorosis, and lead to bone marrow deformity and harm human health. Therefore, the country has clear requirements for fluorine content in drinking water (less than 1ppm). For the discharge requirements of fluorine content in industrial wastewater, some regions have also raised the national discharge standard of less than 10ppm to less than 1ppm, which brings challenges to the precision removal of fluorinein industrial wastewater.

At present, there are two main methods to remove fluorine from wastewater in the market: chemical method and adsorption method.

Processing methodAdvantagesDisadvantages
Chemical methodLimeSimple, convenient and low cost.The effluent accuracy is 
generally 15-20 mg/L, 
which is usually used as the 
pretreatment for 
fluorine-containing 
wastewater.
Aluminum salt, iron saltLarge capacity, able to meet the wastewater discharge standard (10 ppm), 
simple and convenient operation
When the treatment accuracy is less than 10ppm, 
the drug dose and waste 
residue are large and the 
treatment cost is high.
Adsorption methodConventional adsorbents
(zeolite, carbon-based 
apatite, activated alumina, 
etc.)
It is suitable for the defluorination 
treatment of low concentration 
fluorinated ionic water, the treatment 
accuracy is higher than the 
precipitation method, and the 
adsorbent cost is lower
When the treatment accuracy is less than 1ppm, it is not 
stable enough, with large 
fluctuation, low adsorption 
capacity, and obvious 
attenuation after multiple 
regeneration.
Special resin for fluorine 
removal
Suitable for the defluorination 
treatment of low concentration 
fluorinated ionic water, the treatment 
accuracy can be stable below 1ppm, 
and it is easy to regenerate and has 
long resin life. The resin system can 
be designed to be automated and 
easy to operate, with low operating 
cost.
One-time investment cost 
is relatively high.


For the low content and precision required to remove (<1ppm) fluorine containing wastewater, the traditional chemical treatment process is limited by the treatment precision and cost, and is gradually replaced by adsorption treatment process.

However, in the adsorption process, the conventional adsorbents (such as zeolite, activated alumina, etc.) in the precision treatment of fluorine, there are some problems such as large fluctuation, low treatment capacity and obvious attenuation. However, conventional anion exchange resin has a low selectivity to fluorine due to the limitation of ion selectivity order. In competitive exchange adsorption, fluorine ion is at a disadvantage, which affects the removal effect of the resin on fluorine ion.

(selective order of anions: CIO4-> I-> CrO42-> SO42-> BR-> CN-> NO3-> Cl-> F-)

LSC-760 special resin for defluorination developed by Sunresin is a new nano metal loaded polymer resin. The resin has a single selectivity for fluorine ions in the water phase. Compared with the conventional anion exchange resin, the resin has the characteristics of high selectivity, large processing capacity, high processing accuracy, less resin consumption under the same working conditions, and long service life (generally more than years). Through pilot test and industrial verification of many industrial enterprises, the fluorine content in the effluent can be maintained below 1ppm stably, and the resin performance is stable and reliable. Seplite ® LSC-760 resin is considered as the reliable guarantee for the accurate fluorine removal of wastewater by the majority of users.

Seplite®LSC-760 Special Resin for Fluoride Removal:

Operation temperature(℃)≤60
pH69
Total hardness(ppm,CaCo3)<300



Application process flow diagram of Seplite ® LSC-760 fluoride removal special resin:
application-process-flow-diagram-of-seplitelsc-760-fluoride-removal-special-resin



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