期刊论文

中文

中国给水排水

1000-4602

2018

34

1

82-85

10.19853/j.zgjsps.1000-4602.2018.01.018

国家自然科学基金

本校为其他机构

为了实现污水厂剩余污泥的资源化,污泥厌氧消化工艺的应用愈加普遍,厌氧消化过程是否会对剩余污泥的脱水性能产生影响是值得研究的问题。为此,利用加药污泥真空抽滤试验考察了污泥的脱水性能,结果表明,中温厌氧消化污泥(MADS)的比阻和过滤时间(TTF_(50))均大于剩余污泥(EAS)以及含水率接近厌氧消化污泥的浓缩后剩余污泥(TEAS),剩余污泥经浓缩后脱水速率有一定的降低,而厌氧消化过程会使剩余污泥的脱水速率大幅度降低。激光衍射粒度分析仪的测定结果显示,EAS及MADS的平均粒径分别为70.44、42. 00 µm,比表面积分别为2 122、 3 743 cm~2/mL;由紫外光谱和傅里叶变换红外光谱对胞外聚合物(EPS)的分析...

Anaerobic digestion process will be widely used to achieve reutilization of excess activated sludge(EAS) in WWTP, and the effects of anaerobic digestion on sludge dewaterability are worth studying. Thus, dewaterability of the conditioned sludge was tested by vacuum filtration. Results showed that,specific resistance and filtration time ( TTF_(50)) of mesophilic anaerobic digestion sludge ( MADS) were both larger than that of EAS and thickened excess activated sludge ( TEAS). Dewater velocity of TEAS was slightly less than EAS, while anaerobic d...