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Feasibility of Co-Treating Olive Mill Wastewater and Acid Mine Drainage
Mine Water and the Environment ( IF 2.1 ) Pub Date : 2020-10-03 , DOI: 10.1007/s10230-020-00719-1
Jorge Dias Carlier , Ana Teresa Luís , Luís Miguel Alexandre , Maria Clara Costa

Previous tests using a growth medium and olive mill wastewater (OMWW) have shown that it supplies carbon and electron donors suitable for sulphate reducing bacteria (SRB). We assessed the co-treatment of acid mine drainage (AMD) and OMWW using SRB-enriched bioreactors and identified the most abundant bacterial populations present under optimized conditions. The process requires a neutralizing agent to create optimal pH conditions for successful removal of the AMD’s main contaminants. Concentrations of SO42−, Al, Fe, Cu, Zn, and Mn decreased to below Portugal’s maximum admissible values for irrigation waters, and all but Mn were reduced to less than Portugal’s emission limit values (ELVs) for wastewater discharges. Phenol concentrations—the main pollutants in OMWW—dropped to values between 1/10 and 1/5 their initial concentrations in batch tests using mixtures of AMD and OMWW, and to 1/2 their initial concentrations in flow-through tests. The final total phenol concentrations were still above the ELV for wastewater discharges, but phenols are not regulated in irrigation waters, and OMWW is used by some producers to irrigate soils. Six main SRB groups were identified as likely having a fundamental role in the bioremediation process: the genera Desulfovibrio, Sulfurospirillum, and Acetobacter and the families Sphingomonadaceae, Prevotellaceae, and Deferribacteraceae.

中文翻译:

橄榄厂废水与酸性矿山排水协同处理的可行性

先前使用生长培养基和橄榄磨废水 (OMWW) 进行的测试表明,它提供适合硫酸盐还原菌 (SRB) 的碳和电子供体。我们使用富含 SRB 的生物反应器评估了酸性矿山排水 (AMD) 和 OMWW 的协同处理,并确定了在优化条件下存在的最丰富的细菌种群。该过程需要使用中和剂来创造最佳 pH 条件,以成功去除 AMD 的主要污染物。SO42−、Al、Fe、Cu、Zn 和 Mn 的浓度降低到葡萄牙灌溉水的最大允许值以下,除 Mn 外,其他所有浓度都降低到低于葡萄牙废水排放的排放限值 (ELV)。苯酚浓度(OMWW 中的主要污染物)在使用 AMD 和 OMWW 混合物的批量测试中降至其初始浓度的 1/10 至 1/5,并在流通测试中降至其初始浓度的 1/2。最终的总苯酚浓度仍高于废水排放的 ELV,但灌溉水中的苯酚没有受到管制,一些生产者使用 OMWW 来灌溉土壤。六个主要的 SRB 组被确定为可能在生物修复过程中发挥重要作用:脱硫弧菌属、硫螺菌属和醋杆菌属以及鞘单胞菌科、普氏菌科和去铁杆菌科。但灌溉水中的酚类不受管制,一些生产者使用 OMWW 来灌溉土壤。六个主要的 SRB 组被确定为可能在生物修复过程中发挥重要作用:脱硫弧菌属、硫螺菌属和醋杆菌属以及鞘氨醇杆菌科、普氏菌科和去铁杆菌科。但灌溉水中的酚类不受管制,一些生产者使用 OMWW 来灌溉土壤。六个主要的 SRB 组被确定为可能在生物修复过程中发挥重要作用:脱硫弧菌属、硫螺菌属和醋杆菌属以及鞘氨醇杆菌科、普氏菌科和去铁杆菌科。
更新日期:2020-10-03
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