悬浮填料生物反应器石化废水生物硝化研究

采用自行研制的悬浮填料生物反应器中试装置对石油化工废水进行处理.通过6、8、10和12h四个不同水力停留时间的硝化过程取得了不同运行条件下的氨氮去除效果.结果表明，悬浮填料生物反应器完全可以达到生物硝化的目的.当进水中BOD

Biological Nitrification for Petrochemical Wastewater Using Suspended Carrier Biological Reactor

A novel pilot scale suspended carrier biological reactor (SCBR) has been developed to study biological treatment for wastewater from petrochemical industry in the SCBR, at The Wastewater Treatment Plant of Shanghai Petrochemical Company. The HRTs of 6h, 8h, 10h and 12h was investigated to test the nitrification process to find out what level of ammonia nitrogen removal that could be obtained under different operation conditions. The study showed that the SCBR was suitable for nitrification purposes. When the influent concentrations of BOD5 and CODcr varied in a range of 77.4～234.0 mg· L- 1 and 245.5～695.7 mg· L- 1,the average removal efficiencies were 90 % and 80 %, and the average effluent concentrations were less than 15mg· L-1 and 90mg· L-1 for BOD5 and CODcr, respectively. During the test period the ammonia nitrogen concentrations varied from 8.3 to 53.2 mg· L- 1, the corresponding average removal efficiencies were 55.5 %,86.7%, 91.1% and 95.6 %, and average effluent concentrations were 9.43 mg· L- 1, 3.1 mg· L- 1, 1.71mg·L-1,and 0.79 mg·L-1, respectively at HRTs of 6h, 8h, 10h and 12h.