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首页> 外文期刊>Environmental Science: Water Research & Technology >Impact of ferrous iron dosing on iron and phosphorus solids speciation and transformation in a pilot scale membrane bioreactor
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Impact of ferrous iron dosing on iron and phosphorus solids speciation and transformation in a pilot scale membrane bioreactor

机译：铁铁给药对铁和磷固体形态的影响，在试验规模膜生物反应器中的转化

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摘要

In this study, the distributions of iron and phosphorus species in a 1.25 m(3) pilot scale submerged membrane bioreactor dosed with Fe(ii) salts to either the membrane chamber or the 1st anoxic chamber were determined using X-ray absorption spectroscopy (XAS) at the iron and phosphorus K-edges. Significant differences in the distribution of Fe species were evident at the commencement of dosing depending on the chamber to which Fe(ii) was dosed though these differences were much less distinct by the time steady state conditions were achieved. Both the co-precipitation of P with Fe and adsorption of phosphorus to iron oxides play important roles with regard to the removal of phosphorus from the MBR supernatant with the results of this work suggesting that P removal via formation of Fe(iii)-phosphate mineral species is preferred if Fe(ii) is dosed to the membrane chamber rather than the 1st anoxic chamber.
机译：在本研究中，使用X射线吸收光谱法测定用X射线吸收光谱法测定用Fe（II）盐的1.25米（3）升浸没膜生物反应器中的铁和磷物种分布在膜室或第一缺氧室中（XAs ）在铁和磷酸k边缘。取决于当这些差异无稳态条件的情况下，虽然这些差异不太明显，因此在给药时，在给药的开始时，Fe种的分布的显着差异是显而易见的。对铁氧化铁的Pe和吸附磷的P的共沉淀作用于从MBR上清液中除去磷的磷的重要作用，并通过形成Fe（III） - 磷酸矿物的P脱离P切除如果将Fe（II）给予膜室而不是第一个缺氧室，则优选物种优选。

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    Wu Hao; Wang Yuan; Ikeda-Ohno Atsushi; Miller Christopher J.; Waite T. David;

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    Univ New South Wales Sch Civil & Environm Engn Water Res Ctr Sydney NSW 2052 Australia;

    Univ New South Wales Sch Civil & Environm Engn Water Res Ctr Sydney NSW 2052 Australia;

    JAEA CLADS 2-4 Shirakata Tokai Ibaraki 3191195 Japan;

    Univ New South Wales Sch Civil & Environm Engn Water Res Ctr Sydney NSW 2052 Australia;

    Univ New South Wales Sch Civil & Environm Engn Water Res Ctr Sydney NSW 2052 Australia;

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