Institut Agronomique et Vétérinaire Hassan II, B.P 6202-Instituts, Rabat, Morocco.
Water Sci Technol. 2010;62(3):475-83. doi: 10.2166/wst.2010.235.
The objective of this study was to determine the effectiveness of anaerobic digestion in the treatment of polyphenols (PP) present in olive mill wastewater (OMW) and wine distillery wastewater (WDW). Anaerobic Toxicity Assay (ATA) was conducted to assess the impact of the most representative phenolic compounds present in OMW and WDW: catechol, tannins and p-Coumaric acid, on biogas production. The results from this study show that tannins do not present any inhibitory effect on methanogenesis at a concentration level of 1,664 ppm, whereas catechol has an inhibitory effect at 1,664 ppm. In addition, p-Coumaric acid was strongly inhibitory at 50 ppm. The co-digestion of OMW and WDW with other effluents was proposed as a solution for reducing the load of PP in the anaerobic medium. Biochemical methane potential (BMP) tests were carried out for dairy cattle manure and mixtures of five PP. A central composite design was implemented on the BMP tests to model the biogas production response and the degradation kinetics of PP. The co-digestion of WDW with cattle manure and/or whey was also investigated in BMP tests. The results show that the digestion was optimal at a ratio of 16: 64: 20 (WDW: manure: inoculum) with a maximum biogas yield of 172 mL/g of VS and 66% COD removal.
本研究旨在确定厌氧消化在处理橄榄压榨废水（OMW）和葡萄酒蒸馏废水（WDW）中多酚（PP）的有效性。采用厌氧毒性测定（ATA）评估了 OMW 和 WDW 中最具代表性的酚类化合物（儿茶酚、单宁和对香豆酸）对沼气产量的影响。研究结果表明，单宁在 1664ppm 的浓度下对甲烷生成没有抑制作用，而儿茶酚在 1664ppm 时有抑制作用。此外，对香豆酸在 50ppm 时具有很强的抑制作用。提出了与其他废水共消化 OMW 和 WDW 的方法，以减少厌氧介质中 PP 的负荷。对奶牛粪便和 5 种 PP 混合物进行了生物化学甲烷潜力（BMP）测试。在 BMP 测试中实施了中心复合设计，以模拟沼气产量响应和 PP 的降解动力学。还在 BMP 测试中研究了 WDW 与牛粪和/或乳清的共消化。结果表明，在 WDW:粪便:接种物为 16:64:20 的比例下消化最佳，最大沼气产量为 172mL/gVS，COD 去除率为 66%。
