一种适合当前国情的城市污水脱氮除磷新工艺

城市污水中氮、磷的处理是水污染控制的一个重要问题．自７０年代起，氮、磷污染就引起了世界各国的关注．我国现有的城市污水处理厂绝大多数不具备氮、磷脱除能力．随着经济的发展和人们环境意识的提高，对氮、磷的控制势必会越来越受到重视．文中简要介绍在实验室研究和万吨级的生产性试验的基础上提出的“高浓度活性污泥连续进水间歇曝气生物脱氮、除磷新工艺”，该工艺可在基本不增加投资的情况下，使传统活性污泥法工艺在保持较高的ＢＯＤ５，ＣＯＤ去除率的同时，具备良好的脱氮、除磷功能．

New Nitrogen and Phosphorus Removal Technology in Urban Wastewater Treatment Suited to Present Chinese Conditions

The nitrogen and phosphorus removal in urban wastewater is an important subject in water pollution control. However, most existing urban wastewater treatment plants in China do not have the capability to remove nitrogen and phosphorus. This paper gives a brief introduction of "the new biological nitrogen and phosphorus removal technology proceeded by high concentration activated sludge continuous influent and intermittent aeration. It improves the conventional activated sludge process in the way that it not only keeps high BOD5 and COD removal rate, but also has good nitrogen and phosphorus removal function, while no extra investment is needed basically.