Universidade Federal de Ouro Preto (UFOP), Ouro Preto, Brazil.
Fundação Getúlio Vargas (FGV-Energia), Rio de Janeiro, Brazil.
Water Environ Res. 2020 Feb;92(2):245-254. doi: 10.1002/wer.1235. Epub 2019 Sep 19.
The anaerobic biological treatment of sulfate-rich effluents, such as acid mine drainage (AMD), is mediated by sulfate-reducing bacteria (SRB). This process involves the reduction of sulfates in the presence of an electron donor. Complex carbon compounds can be used as electron donors. In the present study, was used an upflow anaerobic sludge blanket (UASB) reactor to co-treat a low-pH synthetic AMD and cheese whey wastewater (CWW). Were observed higher sulfate and COD removal rates (1,114 ± 88 and 1,214 ± 128 mg L day , respectively) at higher sulfate and applied COD loading rates (1,500 mg L day ). The overall pH of the effluent remained above 6.4 without any bicarbonate supplementation. Almost 100% of the Fe, Zn, and Cu was removed and the presence of metals improved the process. The use of a single reactor to treat AMD and CWW is promising. PRACTITIONER POINTS: Wastewater cheese whey was electron donor for treating acid mine drainage in an UASB reactor. Metals additions in the system indicated an increased removal of COD. About 99% of the metals were removed with the treatment.
富含硫酸盐的废水（如酸性矿山排水，AMD）的厌氧生物处理由硫酸盐还原菌（SRB）介导。该过程涉及在电子供体存在下还原硫酸盐。复杂的碳化合物可用作电子供体。本研究采用上流式厌氧污泥床（UASB）反应器同时处理低 pH 值的人工 AMD 和奶酪乳清废水（CWW）。在较高的硫酸盐和应用 COD 负荷率（1500mg/L/d）下，观察到更高的硫酸盐和 COD 去除率（分别为 1114±88 和 1214±128mg/L/d）。出水的总 pH 值保持在 6.4 以上，无需补充碳酸氢盐。Fe、Zn 和 Cu 的去除率接近 100%，金属的存在改善了处理过程。在单个反应器中处理 AMD 和 CWW 是有前景的。
在 UASB 反应器中，奶酪乳清废水是处理酸性矿山排水的电子供体。
系统中添加金属表明 COD 的去除率增加。
处理后约 99%的金属被去除。
