GAC-石英砂生物滤池处理微污染原水

STUDY ON MICRO-POLLUTED RAW WATER TREATMENT BY GAC-SAND BIOFILTRATION

试验研究GAC-石英砂滤池在增加生物预处理工艺并取消预加氯时对珠江微污染原水的处理特性。研究了GAC-石英砂生物滤池对NH3-N、NO2--N、CODMn和浊度的去除效果,试验期间GAC-石英砂生物滤池出水NH3-N、CODMn、浊度平均值分别为0.1mg·L-1、1.56mg·L-1、0.23NTU,其相对于沉淀池出水的NH3-N、CODMn、浊度的平均去除率分别为79.2%、35.5%、82.6%,碳砂滤池出水NO2--N几乎检测不出来。GAC-石英砂生物滤池与普通碳砂滤池相比其对氨氮、有机物和浊度的去除率都有很大的提高,是处理微污染原水的一种新途径。

A new way to treat ZhuJiang micro-polluted source water with granular activated carbon （GAC） sand biofiltration was investigated with test. The technique increased the biologica pre-treatment before general disposal and cancelled the addition of Cl2. The removal of NH3-N and NO2^--N and CODMn and turbidity by the GAC-Sand Biofiltration were studied. During the experiment, the average data of the GAC-Sand Biofiltration of NH3-N and CODMn and turbidity is 0.1 mg·L^-1, 1.56 mg·L^-1, 0.23 NTU, the average removal rate of NH3-N and CODMn and turbidity is 79.2%, 35.5%, 82.6% relatively to sedimentation, and NO2^--N almost can not be measured. It can remove more NH3-N and organic and turbidity than common GAC-sand filter.