多级粗滤料滤床─慢滤综合净水工艺研究

Research on Multi grading Coarse Filter Bed——Comprehensive Clarification Technology with Slow Filtration

为了寻找一种工艺简单、设备耐用、操作管理方便的净水工艺 ,对多级粗滤料滤床慢滤综合净水工艺进行了试验研究。根据所设计的试验流程 ,对两种水质的原水进行试验。苯酚采用 4-氨基安替比林直接光度法测定 ,氨氮采用氨测定的蒸馏滴定法中的预处理方法 ,溶解氧采用碘量法测定 ,浊度用光电浊度仪测定。最终得出了多级串联粗滤成熟期有机物去除率与时间关系、氨氮的浓度变化曲线 ,并对试验结果进行了分析讨论。

In order to find a clarification technology, which is simple in technique, convenient in operation and management, and has durable equipments; a multi grading coarse filter bed, comprehensive clarification technology with slow filtration, is experimentally researched. According to the designed experimental process, the two kinds of raw water with different water qualities are assayed. The phenol is assayed by using ampyrone and direct photometry; the ammonia and nitrogen is assayed by using pretreatment method of the distillation titration method; the dissolution oxygen is assayed by using iodometry; the cloudiness is assayed by using the photoelectric nephelometer. Finally, the relation between the organics removal rate and time in the muture period of the multi grading series coarse filter bed, the variation curve of concentration of ammonia and nitrogen; are obtained. And the experimental results are analyzed and discussed. [