Picot B, Paing J, Sambuco J P, Costa R H R, Rambaud A
Département Sciences de l'Environnement et Santé Publique, Université Montpellier I, BP 14491, 34093 Montpellier 5, France.
Water Sci Technol. 2003;48(2):243-50.
This work concerned the application of anaerobic ponds for the primary treatment of urban wastewater in a Mediterranean climate. It was carried out on anaerobic ponds at large scale in Mèze (France). The anaerobic ponds constitute a good primary treatment with the removal of 55% of SS and 30% of BOD5, with a small surface area. The accumulation rate of sludge was only 0.017 m3/capita.year, due to their intensive anaerobic degradation. The anaerobic digestion reached equilibrium after one year of operation. The accumulation of sludge then showed seasonal variations with a substantial accumulation in winter and the digestion of the stock in summer. This change can be related to the influence of the temperature on methanogenesis. The production of biogas (83% CH4) was measured by gas collectors especially developed for this study and was also strongly dependent on temperature. The mass balance of carbon showed that 74% of the removed organic carbon was converted into CH4, 13% into dissolved inorganic carbon and 15% was stored in sludge. However, the anaerobic ponds presented a risk of creating odor nuisances with the emission of H2S.
这项工作涉及在亚热带气候条件下，厌氧塘用于城市污水一级处理的应用。该研究在法国梅泽的大型厌氧塘中进行。厌氧塘是一种有效的一级处理方式，能在较小的表面积下，去除55%的悬浮物（SS）和30%的五日生化需氧量（BOD5）。由于其强烈的厌氧降解作用，污泥的积累速率仅为0.017立方米/人·年。厌氧消化在运行一年后达到平衡。随后，污泥积累呈现季节性变化，冬季大量积累，夏季则消化存量。这种变化可能与温度对甲烷生成的影响有关。通过专门为本研究开发的气体收集器测量沼气产量（83%为CH4），其产量也强烈依赖于温度。碳的质量平衡表明，去除的有机碳中74%转化为CH4，13%转化为溶解的无机碳，15%储存在污泥中。然而，厌氧塘存在因硫化氢排放而产生气味 nuisance 的风险。 （注：nuisance 此处结合语境推测为“困扰、麻烦”之类意思，但中文里没有完全对应的简洁词汇，可根据实际情况调整表述使其更通顺）
