Istituto di Ricerca Sulle Acque C.N.R., Via F. De Blasio 5, 70123 Bari, Italy.
Water Res. 2010 Mar;44(6):1825-32. doi: 10.1016/j.watres.2009.12.007. Epub 2010 Jan 11.
This paper reports the results of an investigation aimed at evaluating the performance of an innovative technology (SBBGR system - Sequencing Batch Biofilter Granular Reactor), characterised by a low sludge production, for treating municipal wastewater at demonstrative scale. The results have shown that even at the maximum investigated organic load (i.e., 2.5 kg COD/m(3) d), the plant removed 80% of COD, total suspended solids and nitrogen content with relative residual concentrations lower than the Italian limits for discharge into soil. The process was characterised by a very low sludge production (i.e., 0.12-0.14 kg TSS/kg COD(removed)) ascribable to the high sludge age in the system (thetac >120 d). Molecular in situ detection methods and microscopy staining procedures were employed in combination with the traditional measurements (oxygen uptake rate and total protein content) to evaluate both the microbial activity and composition, and the structure of the biomass. A stable presence of active bacterial populations (mainly Proteobacteria) was found within compact and dense aggregates.
本文报告了一项旨在评估创新技术（SBBGR 系统-序列批量生物滤池颗粒反应器）性能的研究结果，该技术的特点是污泥产量低，可在示范规模下处理城市废水。结果表明，即使在最大调查的有机负荷（即 2.5kgCOD/m³d）下，该工厂也能去除 80%的 COD、总悬浮固体和氮含量，残留浓度相对低于意大利规定的排入土壤的限值。该工艺的污泥产量非常低（即 0.12-0.14kgTSS/kgCOD（去除）），这归因于系统中的高污泥龄（thetac >120d）。采用分子原位检测方法和显微镜染色程序，结合传统测量方法（需氧量和总蛋白含量），评估微生物活性和组成以及生物量的结构。在紧凑而密集的聚集体中发现了稳定存在的活性细菌种群（主要是变形菌门）。
