剩余污泥经臭氧破解后其中碳、氮和磷的变化

在臭氧对污泥进行减量的过程中,针对臭氧作用后污泥中碳、氮和磷数量的变化,对污水处理厂的剩余污泥进行了不同累计时间的臭氧作用研究,结果表明经臭氧破解后污泥中的TN没有较大改变,污泥中的TP最终呈减少趋势,破解液中的COD虽有所增加,但破解液回流到生物系统中反而可以补充反硝化过程中有机碳的不足,从而促进污水生物处理的脱氮除磷作用,臭氧的引入不仅可以减少污水处理厂的运行成本,同时可为城镇污水处理厂全面升级改造提供一定的参考。

Changes of Carbon, Nitrogen and Phosphorus in Excess Sludge Disintegrated by Ozone

During the process of sludge reduction, ozonation with different accumulative time to excess sewage in sewage treatment plant were studied to learn the quantity changes of carbon, nitrogen and phosphorus. The results showed that there was no significant change of ＇IN in ozonated sludge and TP decreased eventually; COD increased, but when the ozonated sludge flowed hack into the biosystem, it supplemented the organic carbon source to promote the denitrifieation and dephospborization. Therefore the adoption of ozone reduced the operation cost of sewage treatment plant, and provided a reference as well for upgrading of urban sewage treatment plants.