城市污水处理问题与水解—好氧生物处理工艺

传统的活性污泥工艺由于基建投资高、能耗高和运行维护费用高,在实践应用中受到了限制。水解-好氧生物处理工艺是近年来国内具有突破性进展的新工艺,对处理城市污水具有十分的吸引力。其中水解反应器因为仅发生水解和产酸反应,停留时间短,对悬浮物的去除率很高。由于水解出水污染物的降低和易降解有机物的增加,使好氧处理的停留时间可以缩短。本文重点介绍水解-好氧生物处理工艺的研究和应用。

Municipal Wastewater Treatment and Hydrolysis-aerobic Biological Process

The conventional activated-sludge process for municipal wastewater treatment in China has the disadvantages of high investment cost, high energy consumption and high maintenance cost. The hydrolysis-aerobic biological process is a state-of-the-art technique and an alternative for municipal wastewater treatment. The hydrolysis reactor has the advantages of having shorter hydraulic retention time and higher suspended solids removing efficiency because only hydrolysis and acidification stages take place. The retention time can be decreased as the pollutants concentration is lowered and the readily biodegradable matters are increased in effluent. The research and application of hydrolysis-aerobic biological process are emphasized in this paper.