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Method for removing bromate in water through Fe<2+> and beta-FeOOH supported red mud ceramsite

A red mud ceramsite and bromate technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water/sewage treatment, etc., can solve the problems of large dosage of chemicals, easy hydrolysis, etc. The effect of dosage, improving adsorption performance and simple operation process

Active Publication Date: 2015-12-16
哈尔滨学博环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention is to solve existing method to add Fe separately 2+ When removing bromate in water with β-FeOOH, the dosage of reagents is large, and it is loose and easy to hydrolyze in powder form.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0010] Specific implementation mode one: a kind of loading Fe in this implementation mode 2+ The method of removing bromate in water by red mud ceramsite with β-FeOOH is carried out according to the following steps:

[0011] Add loaded Fe to bromate-containing water under the condition of temperature 15℃~35℃ and shaking 2+ Adsorb with red mud ceramsite of β-FeOOH, the adsorption time is 1h~4h, and obtain the solution after treatment; the concentration of bromate in the water containing bromate is 600μg / L~1000μg / L; The pH range of the salt water is 5.8 to 8.8; the loaded Fe 2+ The mass ratio of red mud ceramsite with β-FeOOH to the water containing bromate is 1g:(8~12)mL.

specific Embodiment approach 2

[0012] Embodiment 2: This embodiment differs from Embodiment 1 in that the concentration of bromate in the bromate-containing water is 800 μg / L. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0013] Embodiment 3: This embodiment is different from Embodiment 1 or Embodiment 2 in that: the pH of the bromate-containing water is 6.8. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for removing bromate in water, particularly to a method for removing bromate in water through Fe<2+> and beta-FeOOH supported red mud ceramsite, and aims to solve problems that the drug dosage is large and Fe<2+> and beta-FeOOH are loose in a powder shape and easy to hydrolyze when Fe<2+> and beta-FeOOH are added separately to remove the bromate in the water according to existing methods. The method comprises steps as follows: a certain amount of the Fe<2+> and beta-FeOOH supported red mud ceramsite is added to a to-be-treated bromate solution, a treated solution is obtained after vibration at a certain temperature, and the bromate concentration of the solution is measured. The bromate in the water is removed with the method.

Description

technical field [0001] The invention relates to a method for removing bromate in water. Background technique [0002] Bromate has been classified as a 2B potential carcinogen by the International Agency for Research on Cancer. Studies have shown that when people drink drinking water with a bromate concentration of 5.0 μg / L for a lifetime, the risk of carcinogenicity is 10. -1 . At present, there are many researches on bromate removal technology at home and abroad. Among them, the ferrous sulfate reduction method has been verified to quickly reduce BrO 3 - Revert to Br - , but the Fe required during the reaction 2+ If the concentration is high, the iron content in the water body will exceed the standard after the reaction. Therefore, it can be loaded on the surface of ceramsite to overcome the problem of large dosage. [0003] β-FeOOH is an environmentally friendly material and is widely used as an adsorbent to remove pollutants in water. Among iron oxides, β-FeOOH ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/28C02F1/70C02F1/58C02F1/42
Inventor 朱琦陈思辰邢子鹏满可心李丽
Owner 哈尔滨学博环保科技有限责任公司
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