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Preparation method of compound absorbent filter medium for removing florin, iron and manganese of water treatment

A composite adsorption and water treatment technology, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of poor water taste, easy to harden, large equipment, etc., to reduce water treatment costs, simple production process, and large adsorption capacity. Effect

Inactive Publication Date: 2008-10-22
杨劭
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bone charcoal has been used to remove fluoride from drinking water in rural China. Although the defluoridation effect is good, it has been withdrawn from the Chinese market due to the disadvantages of low strength of bone charcoal adsorbent, short service life, poor taste of effluent, and unenvironmental protection during the processing process; activated alumina is At present, the main drinking water defluoridation adsorbents in the market are rich in sources and moderate in price, but activated alumina is suitable for defluoridation under acidic pH conditions, and its defluoridation capacity is low. , and there is a risk of aluminum ion dissolution in the effluent, which poses a safety hazard. Activated alumina has been widely used in rural China, but due to the above reasons, the application effect is very poor; The service life of the material is long, but the fluorine removal capacity is very low (usually the static fluorine removal capacity is <1.0mg / g), so the equipment regeneration is frequent, the water treatment contact time is long, and the equipment is huge, especially when the fluorine content is high, the fluorine content of the effluent is relatively high It is difficult to meet the standard requirements, and the application effect in rural areas is not good
The filter material for iron and manganese removal is mainly manganese sand, but manganese sand has no fluorine removal effect, so when the multi-factors of fluorine and iron and manganese exceed the standard, two technologies need to be used together, which increases the cost and difficulty of management and maintenance

Method used

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  • Preparation method of compound absorbent filter medium for removing florin, iron and manganese of water treatment

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Embodiment 1

[0019] The present invention is a preparation method of a composite multifunctional adsorption filter material (Bio-F) for removing fluorine and iron and manganese, and its specific implementation method is as follows:

[0020] 1. Selection of raw materials, using waste biological materials as raw materials (non-bone materials), such as egg shells or shrimp and crab shells or shellfish shells, washed and dried for later use;

[0021] 2. Crushing, crush the raw materials in step 1 and sieving to obtain 5 or 8 or 11 or 16 or 25 or 30 or 35 or 39 or 42 or 46 or 50 or 52 or 58 or 60 mesh particles;

[0022] 3. The particles obtained in step 2 are calcined in the furnace to ensure uniform heating of the raw materials in the furnace. Under normal pressure, the temperature is controlled at 300 or 350 or 380 or 410 or 460 or 520 or 550 or 580 or 620 or 660 ℃ , Keep warm for 30 or 60 or 78 or 85 or 95 or 99 or 103 or 120 or 130 or 135 or 140 or 145 or 150 or 155 or 160 or 166 or 168 or 175...

Embodiment 2

[0029] The preparation method of fluorine-removing iron-manganese composite adsorption filter material, its steps are:

[0030] 1. Selection of raw materials, using waste biological materials as raw materials (non-bone materials), such as egg shells or shrimp and crab shells or shellfish shells, washed and dried for later use;

[0031] 2. Crushing, crush the raw materials in step 1 and sieving to obtain 7 or 9 or 13 or 18 or 20 or 25 or 37 or 40 or 45 or 48 or 51 or 55 or 59 mesh particles;

[0032] 3. Put the particles obtained in step 2 into the furnace for calcination to ensure that the raw materials in the furnace are uniformly heated. Under normal pressure, the temperature is controlled at 310 or 360 or 390 or 420 or 450 or 530 or 560 or 590 or 650 ℃, and heat preservation 33 or 50 or 60 or 80 or 90 or 100 or 110 or 125 or 128 or 134 or 141 or 146 or 152 or 158 or 165 or 169 or 170 or 179 minutes;

[0033] 4. Turn off the heating equipment, and let it cool to 16 or 19 or 25 o...

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Abstract

The invention discloses a preparation method for water-disposal fluorin-removal iron-manganese-removal composite adsorption filter material, comprising the steps as follows: A. raw material selection: abandoned biomaterials are adopted; B. the raw material is crushed and screened; C. the grains enters a furnace for combustion; D. a heating device is stopped and cooled, and the raw material is taken out; E. the raw material is screened; F. the raw material is arranged in a container, phosphoric acid or sulphuric acid or hydrochloric acid is added to dip the raw material, and the raw material is cleaned by clean water after the solution is removed; G. the raw material is then dipped in NaOH solution or KOH solution or CaCl2 solution and washed by clean water after the solution is removed; H. the raw material is circularly disposed by CaO solution or CaCl2 solution and washed by the clean water after the solution is removed, and is dried to gain the composite adsorption filter material. The method of the invention has low cost, wide applicable range for water quality and pH value, convenient usage, rapid speed in removing fluorin, iron and manganese, large adsorption capacity, no secondary pollution, which greatly reduces the expense of water disposal. The disposed water has good taste, stable water quality, high safety and regeneration for a plurality of times.

Description

Technical field [0001] The invention relates to drinking water treatment and wastewater treatment, and more particularly to a preparation method of a water treatment defluoridation and iron manganese removal composite adsorption filter material (Bio-F). It is suitable for the removal of fluoride and iron and manganese in drinking water, and it can also be used for the removal of fluoride and iron and manganese in industrial wastewater. Background technique [0002] According to reports, more than 300 million people in China have unsafe drinking water. Unsafe drinking water quality mainly includes direct drinking of untreated high fluoride water, high arsenic water, brackish water, contaminated water with excessive bacteria, water with excessive iron and manganese, and schistosomiasis-infected water. Among them, the largest population of drinking high-fluoride water, about 60 million people, has become the primary issue of drinking water safety in China. High-fluorine water involv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/30
Inventor 杨劭朱迟赵良元
Owner 杨劭