摘要
强的松生产废水是一种难处理工业废水．混合强的松废水的平均BODs／COD为0.23，沉淀去除不溶性COD，BOD5／COD可提高到0．34．混合强的松废水的COD：N：P为10415：10：1，在厌氧处理中，需外加氮磷营养源．试验证明，采用上流式厌氧污泥床（UASB）工艺处理高浓度强的松废水是可行的．在HRT为2d、容积COD负荷为4．16～4．98g·L^-1·d^-1的条件下，COD去除率可达80％以上．当容积COD负荷超过5．96g·L^-1·d^-1时，反应器易发生酸化，但可通过降低容积COD负荷和调节进水碱度的方法解除酸抑制，使反应器效能得到恢复．
Prednisone wastewater is one of the industrial wastewaters that is very difficult to be treated. Since the BOD5/COD of the mixed prednisone wastewater was about 0.23, it was not easy to be treated biologically. After parts of the undissolved COD were removed by settlement, the BOD5/COD was up to 0.34. Because the COD： N： P of the mixed prednisone wastewater was 10415 ： 10：1, additional N and P nutrients were required during anaerobic biotreatment. The results showed that the biotreatemnt of the mixed prednisone wastewaters with UASB process was feasible. When the hydraulic retention time （HRT） was set at 2 d and the volumetric loading rate was controlled between 4, 16-4. 98g·L^-1·d^-1, the COD removal efficiency was kept higher than 80 %. When the volumetric loading rate was higher than 5.96g·L^-1·d^-1, the reactor was prone to acidification, but it could be recovered by decreasing the influent COD concentration and increasing the influent alkalinity.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2007年第2期230-236,共7页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
国家自然科学基金资助项目(50278084).
