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Preparation method of bone char fluoride removal agent loaded with aluminium ions

A technology of aluminum ion and fluoride removal agent, which is applied in chemical instruments and methods, adsorption water/sewage treatment, and other chemical processes, can solve the problem of low bone char adsorption capacity, reduce workload, reduce water production costs, and ensure The effect of drinking water safety

Inactive Publication Date: 2009-12-09
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problem of low adsorption capacity of bone char, the present invention proposes a preparation method of a bone char defluoride agent loaded with aluminum ions and the obtained bone char defluoride agent loaded with aluminum ions, so as to improve the performance of the bone char defluoride agent loaded with aluminum ions. Adsorption capacity and performance

Method used

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  • Preparation method of bone char fluoride removal agent loaded with aluminium ions

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Effect test

Embodiment 1

[0019] The production method of loaded aluminum ion bone charcoal defluoridation agent is carried out according to the following process:

[0020] 1. Weigh 5g of bone char and put it into 60mL aluminum nitrate solution with an aluminum ion concentration of 1.2g / L;

[0021] 2. Put the bone charcoal and solution mixture into a shaker, shake at 20°C, 100rpm for 24 hours;

[0022] 3. After shaking, take out the bone charcoal, rinse it with clean water several times and dry it.

Embodiment 2

[0024] The production method of loaded aluminum ion bone charcoal defluoridation agent is carried out according to the following process:

[0025] 1. Weigh 10g of bone char and put it into 100mL aluminum nitrate solution with an aluminum ion concentration of 2.4g / L;

[0026] 2. Put the bone charcoal and solution mixture into a shaker, and shake for 48 hours at 30°C and 80rpm;

[0027] 3. After shaking, take out the bone charcoal, rinse it with clean water several times and dry it.

Embodiment 3

[0029] The production method of loaded aluminum ion bone charcoal defluoridation agent is carried out according to the following process:

[0030] 1. Weigh 50g of bone char and put it into 400mL aluminum nitrate solution with an aluminum ion concentration of 4.0g / L;

[0031] 2. Put the bone charcoal and solution mixture into a shaker, and shake at 25°C and 100rpm for 36 hours;

[0032] 3. After shaking, take out the bone charcoal, rinse it with clean water several times and dry it.

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Abstract

The invention relates to a preparation method of a bone char fluoride removal agent loaded with aluminium ions, belonging to the field of drinking water fluoride removal treatment. In the method, bone char of certain mass is put into an aluminium salt solution of certain volume; the mixture of the bone char and the aluminium salt solution is oscillated for certain time under certain condition; the bone char is taken out, washed by clear water and dried under room temperature. The mass ratio between the bone char and the aluminium salt solution is 1:8-1:12. The condition of the oscillation is as follows: the bone char and the aluminium salt solution is fully mixed in the process of oscillation, the time of oscillation is not less than 24h, the temperature of the mixture is kept at 20-40 DEG C during oscillation. Batch adsorption tests show that the adsorption capacity of the aluminium-loaded bone char fluoride removal agent is 60% higher than that of ordinary bone char fluoride removal agents. Used in the areas taking high-fluoride ground water as drinking water resource, the fluoride removal agent can effectively ensure the residents with drinking water safety, reduce the cost for producing water and the workload of daily maintenance of water supply engineering simultaneously.

Description

technical field [0001] The invention belongs to the field of drinking water defluoridation treatment, and in particular relates to a bone char defluoridation agent loaded with aluminum ions and a preparation method thereof. Background technique [0002] Fluorosis caused by high-fluoride groundwater is an endemic disease in drinking water worldwide, and there are similar situations in about 25 countries around the world. China is one of the countries with the most serious fluorosis in the world. Endemic fluorosis in drinking water is distributed in 29 provinces, municipalities, and autonomous regions in my country. By the end of 2005, 45.95 million rural residents in my country were still suffering from excessive fluoride in drinking water. troubled. my country plans to solve the problem of high fluoride water for 38.11 million rural residents during the "Eleventh Five-Year Plan" period. [0003] At present, the commonly used methods for defluoridation of drinking water incl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28
Inventor 周律赵宇
Owner TSINGHUA UNIV
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