Process for preparing fluorine reducing ion sieve of aquatic body
A technology of ion sieve and fluoride reduction, applied in the direction of adsorption of water/sewage treatment, crystalline aluminosilicate zeolite, etc., can solve the problems of damage, difficult sludge volume, large power consumption, etc., and achieve fast adsorption speed and high adsorption capacity The effect of high and good mechanical strength
Examples
example 1
[0010] Add 25% sulfuric acid dropwise to 0.1mol / L sodium silicate aqueous solution under the stirring condition of 60 rev / min, and form silica gel when the pH reaches 7~8, and age at a temperature of 25~30°C 12 hours. After the aging of the silica gel is complete, 0.01 mol / L zirconium oxychloride aqueous solution is added dropwise to the gel system at a rate of 10 ml / min under the stirring condition of 40 rpm. The sample obtained at the time of completion is a white slurry system, in which gel particles with a particle size of about 3-5 mm are uniformly dispersed, aged for 4 hours, filtered, washed until the chloride ion content in the washing water is less than 10 mg / L, and the solid Dry at 110°C. The dried product is heated to 240°C at a heating rate of 2°C / min, kept for 1 hour, and cooled naturally, that is, the finished product. When this finished product is used to treat raw water with a fluoride ion content of 10mg / L, the average adsorption capacity is 6.8gF / Kg under t...
example 2
[0012] Add 15% sulfuric acid dropwise to 0.075 mol / L sodium silicate aqueous solution under the stirring condition of 55 rev / min, and form silica gel when the pH reaches 7-8, and age at a temperature of 25-30°C 12 hours. After the aging of the silica gel is complete, add a 0.15 mol / L cerium sulfate aqueous solution dropwise to the gel system at a rate of 5 ml / min under the stirring condition of 35 rpm. The sample obtained at the time of completion is a white slurry system, in which gel particles with a particle size of about 3-5 mm are uniformly dispersed, aged for 4 hours, filtered, washed until the chloride ion content in the washing water is less than 10 mg / L, and the solid Dry at 110°C. Heat the dried product to 310°C at a heating rate of 1°C / min, keep it warm for 1.5 hours, and then cool down naturally, that is, the finished product. When this product is used to treat raw water with a fluoride ion content of 10mg / L, the average adsorption capacity is 6.5gF / Kg under the ...
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Abstract
Description
Claims
Application Information
- IPC
- C01B39/04; C02F1/28
- Inventors
- 孙岩; 王榕树