废水生物处理中减少剩余污泥量的探讨

Discussion on Reduce Excess Sludge of Wastewater Biological Treatment

简要阐述剩余污泥的生成机制,探讨减少剩余污泥量的技术途径及相应的工艺运行特点。比较了活性污泥和生物膜工艺中剩余污泥生成的不同情况,强调低负荷和高供氧量是必要的运行条件,初步分析了应用厌氧水解工艺减少污泥量的作用机理和运行要求,并展望今后的研究趋向。

The production mechanism of surplus sludge was briefly described, and the technical approaches and the corresponding operational parameters were discussed.The differences between activated sludge and bio-film systems in production of surplus sludge were compared.Low loading and heavy oxygen supply should be the necessary operational conditions.Principle and operation of anaerobic-hydrolysis for reducing surplus sludge were analysed preliminarily and the further research topics were forecasted.