FLUORIDE REMOVAL FILTER

FLUORIDE REMOVAL FILTER

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Our high efficiency fluoride removal technology  is based on  aluminium activated calcium hydroxyapatite   – the most effective media for fluoride removal and minimum impact from competing ions.  We supply our filters with options including automated backwash or just  upflow in/out heads.  Our fluoride removal filters can be used for potable and waste water treatment applications.  The calcium hydroxyapatite  can be regenerated  once the media has been saturated.

 

                                                            

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Description

Fluoride Removal Filter

 

Our fluoride removal technology  is based on aluminium activated calcium hydroxypatite proven to be one of the most effective media for fluoride removal. 

NEWDEF ®Hydroxyapatite – Fluoride removal

Hydroxylapatite, also called hydroxyapatite (HA), is a naturally occurring mineral form of calcium apatite with the formula Ca5(PO4)3(OH), but is usually written Ca10(PO4)6(OH)2 to denote that the crystal unit cell comprises two entities. Hydroxylapatite is the hydroxylendmember of the complex apatite group. The OH ion can be replaced by fluoridechloride or carbonate, producing fluorapatite or chlorapatite. It crystallizes in the hexagonalcrystal system. Pure hydroxylapatite powder is white. Naturally occurring apatites can, however, also have brown, yellow, or green colourations, comparable to the discolou®rations of dental fluorosis.  

Source: Wikipedia.

It is one of the most effective adsorbents of fluoride  with much faster reaction times than Activated Alumina.

 

 Aluminium activated hydroxyl apatite is the most

effective media for fluoride removal from water.

1.   Defluoridation Capacity

The defluoridation capacity of NEWDEF®1 is about 1~4 mg/g which is higher than normal media in the same conditions. The capacity is impacted  by different raw water quality conditions  including fluoride concentration、 temperature、co-existing ions etc..

 

   Hydroxyapatite  Features and Benefits

  • High capacity and shorter contact time
  • Very safe to use; no dissolution of toxic and hazardous substances
  • High efficiency, NEWDEF®1 can remove  up to 99% fluoride  in raw water.
  • Limited inhibition by other competing ions
  • Lower regeneration cost and simple regeneration process
  • Not only restricted to Fluoride ,but can remove iron and manganese as well
  • Can be regenerated.

Performance Comparison- Fluoride Removal media 

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

Comparison of various defluoridation media

Details Fluoride Removal Backwash valves 

 

Our composite tanks come with  a number of options including  Clack  Automated Backwash Valves .