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首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >Direct phosphorus recovery from municipal wastewater via osmotic membrane bioreactor (OMBR) for wastewater treatment
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Direct phosphorus recovery from municipal wastewater via osmotic membrane bioreactor (OMBR) for wastewater treatment

机译：通过渗透膜生物反应器（OMBR）从市政废水中直接回收磷用于废水处理

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This work reports, for the first time, a new approach to direct phosphorus recovery from municipal wastewater via an osmotic membrane bioreactor (OMBR). In the OMBR, organic matter and NH_4~+ were removed by biological activities. PO_4~(3-), Ca~(2+), Mg~(2+) and unconverted NH_4~+ were rejected by the forward osmosis (FO) membrane and enriched within the bioreactor. The resultant phosphorus-rich supernatant was then used for phosphorus recovery. By adjusting the pH to 8.0–9.5, PO_4~(3-) was recovered via precipitation with Ca~(2+), Mg~(2+) and NH_4~+. The OMBR showed up to 98% overall removal of TOC and NH4 + -N. At pH 9.0, more than 95% PO_4~(3-)-P was recovered without addition of magnesium and calcium. The precipitates were predominantly amorphous calcium phosphate (ACP) with phosphorus content >11.0%. In principal, this process can recover almost all the phosphorus, apart from the portion assimilated by bacteria. The global phosphorus recovery efficiency was shown to be 50% over 84 days.
机译：这项工作首次报道了一种通过渗透膜生物反应器（OMBR）直接从市政废水中回收磷的新方法。在OMBR中，生物活性去除了有机物和NH_4〜+。 PO_4〜（3-），Ca〜（2 +），Mg〜（2+）和未转化的NH_4〜+被正向渗透（FO）膜排斥，并在生物反应器中富集。然后将所得的富含磷的上清液用于磷回收。通过调节pH值至8.0-9.5，可通过用Ca〜（2 +），Mg〜（2+）和NH_4〜+沉淀回收PO_4〜（3-）。 OMBR显示TOC和NH4 + -N的去除率高达98％。在pH 9.0时，不添加镁和钙就可以回收超过95％的PO_4〜（3-）-P。沉淀物主要是磷含量> 11.0％的无定形磷酸钙（ACP）。原则上，除了细菌吸收的部分外，该过程几乎可以回收所有磷。在84天内，全球磷回收效率显示为50％。

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