Applicability of Defluoridation Effect Under Different Hydrochemical Characters of Porous Magnesium Oxide

China Rural Water and Hydropower ›› 2017 ›› (8) : 127-131.

LI Lian-xiang1，2，LIU Wen-chao1，2，LI Tie-guang1，2，SUN Ｒui-gang3

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In order to overcome the current application difficulties，the applicability and defluoridation effect of MgO adsorbent under lowfluoride and high -fluoride groundwater are studied in this paper．Ｒesults show that MgO adsorbent possesses good applicability and can remove fluoride below the drinking water standard＇s limit value with low adsorbent dose 0．3 g /L． Meanwhile，MgO adsorbent also adsorbs a lot of coexistence competitive anions，especially bicarbonate and sulfate． These coexistence competition anions have a significant effect on the reused performance of MgO adsorbent． The regeneration method under the condition of deionized water with NaF can hardly satisfy the actual demand of high-fluoride groundwater． As for the regeneration method，it is necessary to consider the desorption and regeneration of fluoride but also the desorption of bicarbonate，sulfate and chloride and thus releasing more adsorption sites．

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LI Lian-xiang，LIU Wen-chao，LI Tie-guang，SUN Ｒui-gang. Applicability of Defluoridation Effect Under Different Hydrochemical Characters of Porous Magnesium Oxide. China Rural Water and Hydropower. 2017, 0(8): 127-131

References

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Received	Revised	Published
2016-11-28	2016-12-19	2017-08-15
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2020-04-25

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