中文摘要：

污泥碱性水解产生短链脂肪酸，可应用到污水脱氮除磷中，但会使其脱水性能恶化．为考察温度和污泥浓度对剩余污泥水解及脱水性能的影响，试验研究了20d内剩余污泥在pH=10、温度25和35℃、不同总悬浮固体（total suspended solids，TSS）下厌氧水解和脱水性能的变化，对溶解性化学需氧量（soluble chemical oxygen demand，SCOD）和毛细管吸收时间（capillary suction time，CST）进行了分析．试验表明：25oC时污泥脱水性随P（TSS）升高先恶化后变化不大，各发酵时间SCOD均升高后变缓；35℃时污泥脱水性随P（TSS）升高先恶化后略提高，SCOD变化与25℃时一致．SCOD变化情况与CST显著正相关；较高温度SCOD溶出更多，脱水性能稍有恶化；TSS对污泥脱水性能的影响较温度更显著．

英文摘要：

Waste activated alkaline hydrolysis can produce short- chain fatty acids that can be applied into the sewage nitrogen and phosphorus removal process ; however, it also causes the deterioration of the dewaterability. This experiment investigated the anaerobic hydrolysis process and dewaterability of waste activated sludge in 20 days under various total suspended solids （TSS） and temperatures at pH = 10. Conclusions are as follows ： at 25 ℃ , sludge dewaterability deteriorated with the increase of TSS and then changed little. SCOD kept stable after progressively increasing. At 35 ℃, sludge dewaterability deteriorated with the increase of TSS first, and then increased slightly. The changes of SCOD brought into correspondence with SCOD at 25 ℃. SCOD and normalized CST had a significant positive correlation. Higher temperatures caused higher leaching SCOD and slightly worse dewaterability. TSS influenced the dewaterability of sludge more significantly than temperature.