This paper explored the positive attributes of aerobic membrane bioreactor for recycling and reuse of domestic wastewater for irrigation. For this purpose, performances of two different full-scale treatment plants, one designed as aerobic membrane bioreactor (AMBR) equipped with a hollow fiber membrane with a nominal pore size of 0.03 μm, and the other, as a conventional nitrogen removal activated sludge plant with pre-denitrification (A²O) were evaluated and compared. The effluent of the A²O system included an average of 109 mg L⁻¹ chemical oxygen demand (COD), 32 mg L⁻¹ total suspended solids (TSS) and 17 mg L⁻¹ of total nitrogen. The AMBR system was able to reduce the effluent COD level to 24 mg L⁻¹, obviously with lower TSS and turbidity. The effluent quality of the AMBR was in compliance with irrigation water standards; its nitrogen content should be evaluated as an added nutritional value for most plants. Considering the additional profit of the recovered water, the investment and operational costs of A²O and AMBR processes were compatible. The results underlined the merit of AMBR process, especially in low populated areas also requiring resources for irrigation.

中文翻译：

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好氧膜生物反应器在生活污水回用和再利用中的潜力

本文探讨了好氧膜生物反应器在生活污水回用和灌溉中的积极作用。为此，两种不同的全规模处理厂的性能，一种设计为需氧膜生物反应器（AMBR），配备了标称孔径为0.03μm的中空纤维膜，另一种则用作常规的脱氮活性污泥厂。进行了预脱氮（A ² O）的评估和比较。A ² O系统的废水平均包括109 mg L ^-1的化学需氧量（COD），32 mg L ^-1的总悬浮固体（TSS）和17 mg L ^-1的总氮。AMBR系统能够将废水的COD水平降低至24 mg L^-1，显然具有较低的TSS和浊度。AMBR的出水水质符合灌溉水标准。它的氮含量应作为大多数植物的附加营养价值进行评估。考虑到回收水的额外利润，A ² O和AMBR工艺的投资和运营成本是兼容的。结果强调了AMBR工艺的优点，特别是在人口稀少的地区，这些地区也需要灌溉资源。