低浓度进水条件下活性污泥的培养方法

进水水质浓度低在我国南方的许多污水处理厂中是个普遍现象。低浓度进水对污水处理厂活性污泥的培养极为不利。介绍了合理投运曝气沉砂池、初沉池,合理控制生化池曝气空气量的分布与强度,合理控制回流比等调控措施,并在污泥培养过程中做好生物相观察。通过这些要点的掌握,在低浓度进水条件下成功培养出了所需要的活性污泥,为保证污水处理厂的正常运行和处理水质达标排放打下了坚实的基础。

On Cultivated Method of Activated Sludge under the Low Concentration Inflow Condition

Low concentration inflow is a very popular problem in the sewage treatment plants of the south cities in China.It will bring many disadvantages to the cultivation of the activated sludge.Several measures are introduced in this paper including reasonable using of aeration desilting basin & primary settling tank,reasonable controlling of air amount distribution & strength of the biochemical reaction basin and the reflux ratio.Furthermore,the observation of the biofacies has been done during the cultivation period.The activated sludge can be cultivated successfully in conditions of low concentration inflow,which may guarantee the wastewater treatment plant running normally and the standard discharging effectively.