Did you search for Activated Alumina Deflouridarion Filter? Water, a universal drink comprises minerals and substances in varying nature from place to place. The originating source’s topography and availability of elements in the area, gives characteristics to water. Fluorine which is good for children below the age of 8 years for calcification of dental enamel on teeth is added in bottled water in America while a number of countries filter its excessive presence in water for house holds with activated alumina deflouridation filter. You can buy these where you buy charcoal pills.
Activated Alumina Deflouridarion Filter — Standards
The presence of fluorine in water beyond permissible standards established by WHO, is dangerous for human life. It gives birth to dental as well as skeletal fluorisis which is a very serious disease usually found in parts of China, India etc. Its excessiveness also reduces I.Q. and results in less motivation and aggressiveness. It is also a cause of mental diseases, cancer and associated ailments. Deflouridation of water to less than 0.1ppm (allowable fluoride concentration of 1.5mg/lit) therefore, is a must process to make it usable for human beings. Precipitate and absorptive principles are followed for fluorine reduction. The various process common in use are Nalgonda process, distillation, activated alumina deflouridation filter process, electrical dialysis process and reverse osmosis process. Each process has got some pros and cons. Reverse osmosis process is operated by trained person with special equipment which consumes lot of power. It is difficult to maintain and hence very expensive and un affordable in public use.
A universal acceptance for activated alumina deflouridation filter which removes 85 to 90 percent fluorine from water has lead to its manufacturing for household purposes. The more and more alumina is used; more purified water is delivered by the filter. This is why a 5 to 7 stage filtering is recommended and is incorporated and built up in model by a number of manufacturers in this field. Various factors affect the removal of fluorine from water. With the increase in dose of activated alumina more sorption surface is available for reaction resulting in more removal of fluorine. But a stage comes when adding more activated alumina does not give any effect and this equilibrium quantity is recommended by the manufacturers.
Activated Alumina Deflouridarion Filter — Waiting Time
With the increase of contact time of activated alumina with fluorinated water percent removal of fluorine increases but gradually becomes constant in about 60 minutes. This is the equilibrium stage and kept in mind while giving stages of filtration. Similarly higher removal of fluorine with lower ph water, i.e. acidic water is due to hydrolysis occurring side by side. Increase alkalinity is harmful for activated alumina as it reduces its capacity in fluorine removal Presence of hardness also affects fluorine removal. Chloride and sulphate ions usually do not create any problem in deflouridation. Presence of carbonate anions decreases the sorption capacity. Sodium and magnesium ions also affect in the same manner. Activated alumina is the most preferable substance for fluorine removal as it can be effectively used to reduce fluorine content in water from 5 mg per litre to less than I mg per litre. It can be regenerated for reuse by treating it with a solution of distilled water, sodium hydro oxide, sulphuric acid or hydrochloric acid. After the exhaustion of activated alumina, it needs replacement with fresh or regenerated form. Sodium hydroxide is supposed to be the best regenerating medium having almost eighty percent efficiency.
Cost of deflouridation comes out to be $ 1/mg/fluorine 100 litre with fresh activated alumina. It can be reduced sharply with reuse and regenerated use of activated alumina.
With these findings various manufacturers devised their own instruments for household application. They generally used a ceramic candle and filled its hollow portion with activated alumina plugged with cotton. Water was passed around this candle and the process was repeated, hereby increasing the number of stages of purification. This resulted in almost fluoride free water for domestic uses.
Activated Alumina Deflouridarion Filter — Cost
The cost of these filters is very moderate in a range of $30 per filter. Various manufacturers and marketing sites provide specifications of activated alumina deflouridation filters supplied by them. The cost of their products may be compared keeping in mind the specialties and quality of each product. The suitable one and pocket friendly model can be owned and used to avoid diseases caused by fluorinated water.
Pur, Brita filters with seven stage filtering, Berky and ecola blue filters and white PF-4 filters have unique features giving best results. These along with products of other giants in field give satisfactory performance and are common in use in almost all the affected countries.
Recommended reduction of fluorine in a particular zone requires studies at local level. These recommendations must be adhered to in filters and quantity of alumina should be monitored. Areas affected by epidemic must be cared for and a compulsory use of filter must be introduced for houses. Most of the schemes supported by municipal authorities remain in effective due to improper maintenance and heavy incurring expenditure in operation. Therefore a regular and effective use of candle type activated alumina deflouridation filter plays a dominant role in eradication of the menaces caused due to excessive use of fluoride. Activated alumina is the most dependable medium to act against fluorine and proved its importance in times of troubles. Activated Alumina Deflouridarion Filter is cool for you and me.
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