摘要：
研究了锰砂过滤工艺在钢铁废水回用处理中除铁除锰的应用。在滤速5.0m/h、工作周期4d、反冲洗强度21 L/(m2.h)和反冲洗时间6 min的操作条件下, 经过自然生物培养成熟的锰砂滤层对钢铁回用废水中的总铁、锰的去除率达80%以上, 出水总铁和锰都达到再生水用作循环冷却用水的水质要求。同时成熟的锰砂滤料还具有一定的COD和氨氮去除能力。
关键词:
钢铁废水,
锰砂生物过滤,
除铁除锰
Abstract:
The application of manganese mineral filter technology to the iron and manganese removal from the steel wastewater recycling treatment has been studied. With the operating parameters of filtering speed 5.0 m/h, working cycle 4d, backwash strength 21L/(m2·h)and backwash time 6 min, the bio-matured manganese mineral filter layer which was bio-cultured naturally has effect on the total Fe and Mn2+ removal rate in steel recycling wastewater and the removal rate is as high as 80%. The residual condition of TFe and Mn2+ in the outflow water conforms to the requirement of the water quality of the regenerated water that is used as circulating cooling water. At the same time, the bio-matured manganese mineral filter layer also has the ability to remove COD and NH4+-N.
Key words:
steel wastewater,
manganese mineral biological filtration,
removal of iron and manganese
中图分类号:
徐竟成, 范海青, 黄翔峰, 张宜莓, 叶正, 金磊. 生物除铁除锰在钢铁废水回用处理中的应用[J]. 工业水处理, 2007, 27(11): 31-34.
Xu Jingcheng, Fan Haiqing, Huang Xiangfeng, Zhang Yimei, Ye Zheng, Jin Lei. Application of iron and manganese biological removal technology to the treatment of s teel recycling was tewater[J]. INDUSTRIAL WATER TREATMENT, 2007, 27(11): 31-34.