SBF装置用于西北干旱地区农宅窖水处理的前期研究

Primary application research of SBF in the treatment of rural housing cellar water at arid regions in Northwest China

针对兰州市榆中县北山地区窖水水质检测,发现水中浊度、锰含量、微生物数量均超过《生活饮用水卫生标准》(GB 5749—2006)的规定值。通过对传统滤池进行改造并结合阳光消毒研制出了一种新型水处理器——阳光消毒-生物砂滤池(SBF)装置,结果表明:通过生物砂滤池中微生物对雨水中污染物的氧化分解及河砂的过滤使浊度及锰得到有效去除,日光高温灭活和光氧化降解综合作用杀灭水中致病微生物。在SBF装置滤速控制在0.8m/h的情况下,水中浊度、锰含量、微生物数量均达到标准的规定值。该净水装置小型简易、无需投药、操作管理方便,适用于西北干旱地区分散、偏僻的农宅窖水处理。

The results of the test on the cellar water quality in the north hilly area in Yuznong County of Lanzhou City showed that the turbidity, manganese and microorganism were all beyond the limits of Standards for drinking water quality （GB 5749--2006）. Through the modification of the conventional filter and the application of the solar disinfection, a new type of water treatment unit, named as solar disinfection--biofilter （SBF）, was developed . The experiment results showed that the turbidity and man- ganese could be reduced effectively through the oxidation of the microorganism in the biofilter on the pollu- tants in rainwater and the filtration of the sand; in addition, the pathogenic microorganism in water could also be destroyed by the combined effect of the sunlight high temperature disinfection and the solar oxidation degradation. When the flow rate of SBF was controlled under 0. 8 m/h, the turbidity, manganese and microorganism would all meet the requirements. This equipment has the advantages of small volume, simple structure, no need of dose, and easy operation, which is suitable for the water treatment of the dispersed rural cellars at arid region in Northwest China.