生物慢滤技术在石漠化农村中的探索与实践

Exploration and Implementation of Bio-slow Sand Filtration Technology in Rural Rocky Desertification Areas

生物慢滤技术因为具备运行简单、成本低廉、操作方便、对致病污染物的去除率高等优点,对饮水来源分散、水质不达标的偏远农村地区较为适用。以贵州毕节撒拉溪喀斯特石漠化农村地区为研究区,结合当地地质条件、饮水现状和改善水质意愿,实地分散地修建7户生物慢滤池作为试点。通过对慢滤池的运行情况和进出水水质监测分析,证明了生物慢滤池可以有效的改善饮水水质。指出了对于水源分散且水质不达标的石漠化农村地区,修建生物慢滤池的必要性和重要意义,对生物慢滤技术在石漠化农村地区的可行性进行分析,证明生物慢滤技术可以适用在石漠化农村地区,为该地区农村饮水安全工程问题提供参考。

Due to operating simplicity, low cost, low chemical and energy requirements, and high removal rate of pollutants, bio-slow sand filtration technology is suitable for remote rural areas where the sources of water are sporadic and the water quality does not reach the national drinking water standard. The study area is Salaxi demonstration rural area in Bijie City, Guizhou Province. Accord- ing to the geological conditions, current status of drinking water quality and residents＇ intentions to purified water, seven scattered families in the demonstration area are selected to build the bio-slow sand filtrations. By analyzing the running situation and quality of outlet water of bio-slow sand filtration, it is proved that the bio-slow sand filtration can improve the water quality of drinking water effectively. This paper shows the necessity and significance of the application of bio-slow sand filtration in rural rocky desertifieation areas where water sources are sporadic and water quality does not reach the rural areas, proves the feasibility of constructing bio-slow sand filtration in rural rocky desertification areas and will provide references for the solution of drinking water problems in rocky desertification rural areas.