Parravicini V, Svardal K, Kroiss H
Institute for Water Quality, Resources and Waste Management, Vienna University of Technology, 1040 Vienna, Karlsplatz 13/226, Austria.
Water Sci Technol. 2007;55(6):181-9. doi: 10.2166/wst.2007.227.
Long term lab-scale and bench-scale experiments were performed to investigate the feasibility of the anaerobic process to treat wastewater from a pulp and viscose fibre industry. Anaerobic wastewater treatment enables an advantageous combination of COD, sulphate and zinc removal from viscose wastewater. The aim of the investigations was to evaluate the influence of the free sulphide concentration on COD and sulphate removal efficiency and on the substrate competition between sulphate reducing and methanogenic bacteria. Since the wastewater did not contain enough COD for complete sulphate removal it was of major interest to determine favourable process conditions to steer the substrate competition in favour of sulphate reduction. Further experiments at bench-scale permitted us to evaluate applicable COD-loading rates and gain fundamental information about process stability and optimization for large-scale implementation. The present work will deal with the most relevant experimental results achieved and with important technological aspects of anaerobic treatment of viscose wastewater.
进行了长期的实验室规模和中试规模实验，以研究厌氧工艺处理制浆和粘胶纤维工业废水的可行性。厌氧废水处理能够从粘胶废水中有利地去除化学需氧量（COD）、硫酸盐和锌。研究的目的是评估游离硫化物浓度对COD和硫酸盐去除效率以及对硫酸盐还原菌和产甲烷菌之间底物竞争的影响。由于废水所含的COD不足以实现完全的硫酸盐去除，因此确定有利的工艺条件以引导底物竞争有利于硫酸盐还原成为主要关注点。中试规模的进一步实验使我们能够评估适用的COD负荷率，并获得有关大规模实施的工艺稳定性和优化的基本信息。本工作将涉及所取得的最相关实验结果以及粘胶废水厌氧处理的重要技术方面。
