Center for Regional Environmental Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
Bioresour Technol. 2013 Mar;131:295-302. doi: 10.1016/j.biortech.2012.12.126. Epub 2013 Jan 3.
This study evaluated the process performance of a novel treatment system consisting of an acidification reactor, an upflow staged sludge bed (USSB) reactor, an upflow anaerobic sludge blanket reactor, and an aerobic trickling filter for the treatment of a high-strength molasses wastewater with a chemical oxygen demand (COD) of up to 120,000mg/L. The USSB operating at 35°C was capable of achieving an organic loading rate of 11kgCOD/m(3) day with a methane recovery of 62.4% at an influent COD of 120,000mg/L. The final effluent COD was 4520mg/L. The system was effective with regard to nitrification and sulfur removal. Fifty percent inhibition of the bacterial activity of the retained sludge by the cations was determined at 8gK/L for sucrose degradation, 16gK/L for sulfate reduction, and 12gK/L or 9gNa/L for acetoclastic methane production. Cation inhibition of anaerobic degradation reduced the process performance of the USSB.
本研究评估了一种新型处理系统的工艺性能，该系统由酸化反应器、上流式分段污泥床（USSB）反应器、上流式厌氧污泥床和有氧滴滤池组成，用于处理 COD 高达 120,000mg/L 的高浓度糖蜜废水。在 35°C 下运行的 USSB 能够以 11kgCOD/m(3)天的有机负荷率运行，在 COD 为 120,000mg/L 的进水条件下，甲烷回收率为 62.4%。最终出水 COD 为 4520mg/L。该系统在硝化和硫去除方面效果显著。通过保留污泥的细菌活性的 50%抑制试验，确定蔗糖降解的抑制常数 K 值为 8gK/L，硫酸盐还原的 K 值为 16gK/L，产乙酸甲烷的 K 值或 Na 值为 12gK/L 或 9gNa/L。阳离子抑制厌氧降解降低了 USSB 的工艺性能。
