Wahab Mohamed Ali, Habouzit Frédéric, Bernet Nicolas, Jedidi Naceur, Escudié Renaud
a Laboratoire de Traitement et de Valorisation des Rejets Hydriques, Centre de Recherche et des Technologies des Eaux , Université de Carthage , Soliman , Tunisie.
b Laboratoire de Biotechnologie de l'Environnement , INRA, UR050 , Narbonne , France.
Environ Technol. 2016;37(13):1676-82. doi: 10.1080/09593330.2015.1127291. Epub 2016 Jan 29.
Wine production processes generate large amount of both winery wastewater and solid wastes. Furthermore, working periods, volumes and pollution loads greatly vary over the year. Therefore, it is recommended to develop a low-cost treatment technology for the treatment of winery effluents taking into account the variation of the organic loading rate (OLR). Accordingly, we have investigated the sequential operation of an anaerobic biofilm reactor treating winery effluents and using grape stalks (GSs) as biofilm carrier with an OLR ranging from 0.65 to 27 gCOD/L/d. The result showed that, during the start-up with wastewater influent, the chemical oxygen demand (COD) removal rate ranged from 83% to 93% and was about 91% at the end of the start-up period that lasted for 40 days. After 3 months of inactivity period of the reactor (no influent feeding), we have succeeded in restarting-up the reactor in only 15 days with a COD removal of 82% and a low concentration of volatile fatty acids (1 g/L), which confirms the robustness of the reactor. As a consequence, GSs can be used as an efficient carrier support, allowing a fast reactor start-up, while the biofilm conserves its activity during a non-feeding period. The proposed hybrid reactor thus permits to treat both winery effluents and GSs.
葡萄酒生产过程会产生大量的酒厂废水和固体废物。此外，一年中的工作周期、产量和污染负荷差异很大。因此，建议开发一种低成本的处理技术来处理酒厂废水，同时考虑有机负荷率（OLR）的变化。相应地，我们研究了厌氧生物膜反应器的连续运行情况，该反应器以葡萄秸秆（GSs）作为生物膜载体处理酒厂废水，OLR范围为0.65至27 gCOD/L/d。结果表明，在废水进水启动阶段，化学需氧量（COD）去除率在83%至93%之间，在持续40天的启动期结束时约为91%。在反应器闲置3个月（无进水）后，我们成功地在仅15天内重启了反应器，COD去除率为82%，挥发性脂肪酸浓度较低（1 g/L），这证实了反应器的稳健性。因此，GSs可作为一种有效的载体支撑物，使反应器快速启动，同时生物膜在非进料期保持其活性。因此，所提出的混合反应器能够处理酒厂废水和GSs。
