Working principle of defluoridation equipment
       When the raw water flows through the defluoridator, the core filter layer inside the defluoridator, and the mineral filter material, the water comes into contact with the defluoridator and the mineral filter material in the defluoridator. Through physical and chemical reactions——adsorption and ion exchange, the fluoride ions in the water are adsorbed and exchanged by the filter material, and the fluoride ions in the water are removed, so that the fluorine content in the water reachesGB5749-2006within the national drinking water health standards (1.0mg/L). After a period of operation, the adsorption and exchange of the mineral filter material is saturated and needs to be regenerated through the regeneration system. After regeneration, the performance of the filter material returns to the original state and can be used repeatedly for a long time. Potassium aluminum sulfate (alum) can be used as the regeneration agent.

Main features
       1, new natural mineral filter material that is beneficial to the human body;
       2, remove fluoride while removing a variety of harmful substances in the water;
       3, stable performance, long service life; low operating costs, generally0.3yuan/tons of water.
       4, simple structure, small footprint, easy operation, maintenance and management;
       5, flexible scale, can be large or small, designed and manufactured according to user requirements;
       6, manual, semi-automatic and fully automatic specifications are available for users to choose.

The necessity of fluorine removal
       氟是属于卤素的在化合物中显负一价的非金属yuan素,通常情况下氟气是一种浅黄绿色的、有强烈助燃性的、刺激性毒气。氟气与水的反应很复杂，主要氟化氢和氧，以及较少量的过氧化氢，二氟化氧和臭氧产生，也可在化合物中置换其他非金属yuan素。可以同所有的非金属和金属yuan素起猛烈的反应，生成氟化物，并发生燃烧。有强的腐蚀性和毒性。

Functional features of fluoride removal equipment
       1uses specially activated activated alumina as the adsorbent, which has the characteristics of fast adsorption speed, large adsorption capacity, little influence on thePHvalue, easy desorption, etc. All performances are better than conventional activated alumina.
       2The regeneration agent uses sodium hydroxide to replace the traditional aluminum sulfate, eliminating the harm to the human body caused by excessive aluminum ions in the effluent.
       3, using the cycle regeneration method, the traditional regeneration time can be shortened to4hours.
       4, adjustingPHvalue and catalytic adsorption process greatly increase the adsorption capacity.
       5, quantitatively and continuously add catalyst to increase the fluorine adsorption rate.
       6, solving the“hardening”problem of activated alumina and the“false fatigue”phenomenon.