采用新型中试规模反应器对城市固体废物新鲜渗滤液进行有效厌氧生物降解：不同接种颗粒污泥条件下的比较。
Effective anaerobic biodegradation of municipal solid waste fresh leachate using a novel pilot-scale reactor: comparison under different seeding granular sludge.
机构信息
School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China.
School of Environmental and Chemical Engineering, Shanghai University, 333 Nanchen Road, Shanghai 200444, PR China.
出版信息
Bioresour Technol. 2014 Aug;165:152-7. doi: 10.1016/j.biortech.2014.03.141. Epub 2014 Apr 4.
A novel integrated internal and external circulation (IIEC) reactor was developed for anaerobic biodegradation of municipal solid waste (MSW) fresh leachate with chemical oxygen demand (COD) between 40,000 and 60,000mg/l. The pilot-scale IIEC reactor was inoculated with two kinds of granular sludge from paper mill (SPM) and from citric acid factory (SCF), respectively. The bio-treating capacity in contaminant removal and biogas production performed much superior to others' results, principally attributed to appropriate configuration modification. Compared to SCF, much higher organic loading rate (40.5 vs 23.0kgCOD/m(3)d) and COD removal efficiency (>80% vs 60-75%) were achieved for the reactor with SPM. For methane production, 11.77 or ∼6m(3)STP/m(3)d of rate and 66-85% of content were observed with SPM or SCF, respectively. Due to better sludge concentrations and methanogenic activity, these findings indicate the anaerobic reactor could effectively bio-treat MSW leachate for methane generation, especially inoculated with granular sludge derived from leachate-like-wastewater.
一种新型的内、外循环（IIEC）反应器被开发出来，用于处理 COD 在 40000 至 60000mg/L 之间的城市固体废物（MSW）新鲜渗滤液的厌氧生物降解。该中试规模的 IIEC 反应器分别接种了来自造纸厂（SPM）和柠檬酸厂（SCF）的两种颗粒污泥。在污染物去除和沼气生产方面的生物处理能力明显优于其他研究结果，主要归因于适当的结构修改。与 SCF 相比，对于采用 SPM 的反应器，其有机负荷率（40.5 比 23.0kgCOD/m(3)d）和 COD 去除效率（>80%比 60-75%）都更高。对于甲烷生产，采用 SPM 或 SCF 时，产甲烷速率分别为 11.77 或 ∼6m(3)STP/m(3)d，甲烷含量分别为 66-85%。由于污泥浓度和产甲烷活性更好，这些发现表明，该厌氧反应器可以有效地对 MSW 渗滤液进行生物处理以产生甲烷，特别是接种来自类似废水的渗滤液的颗粒污泥时效果更佳。
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