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题名: Granular ferric hydroxide adsorbent for phosphate removal: demonstration preparation and field study
作者: Bei Zhao; Yu Zhang; Xiaomin Dou; Hongying Yuan; Min Yang
刊名: Water Science & Technology
出版日期: 2015
卷号: 72, 期号:12, 页码:2179-2186
关键词: adsorption, field test, granulation, phosphate removal, secondary effluents
DOI: 10.2166/wst.2015.438
英文摘要:       Ferric hydroxide (FHO), which has high phosphate adsorption capacity, was prepared by
precipitation at industrial scale and then fabricated via the drum granulation method with crosslinked poly(vinyl alcohol) as the binder. The optimum binder/FHO powder ratio was 0.6 for producing a granular adsorbent with a high phosphate adsorption capacity and stability. The Langmuir maximum adsorption capacities of powder and granular FHOs were 74.07 mg g1 and 56.18 mg g1 at pH 7.0±0.2, respectively, which were higher than those of other reported phosphate adsorbents under neutral or acidic conditions. Phosphate-loaded granular FHO could be regenerated by NaOH solution. Columns containing the granular FHO were used for phosphate removal from ozonated secondary effluents of a municipal wastewater treatment plant at space velocity (SV) of 2 and 5 h1. During more than 2 months’ operation, the average removal percentage of PO43– was more than 90% and the turbidity and concentration of CODMn in the effluents were lower than in the influents. In addition, energy dispersive X-ray results suggested that active sites inside the granular FHO were
available for phosphate removal. The results demonstrated that granular FHO can be applied as an assist technology for phosphate removal from secondary effluents.
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/37295
Appears in Collections:中国科学院饮用水科学与技术重点实验室_期刊论文

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Bei Zhao; Yu Zhang; Xiaomin Dou; Hongying Yuan; Min Yang. Granular ferric hydroxide adsorbent for phosphate removal: demonstration preparation and field study[J]. Water Science & Technology,2015,72(12):2179-2186.
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