Research and Application of harvested rainwater in the villages and towns of China Loess Plateau region

According to the quality characteristics of drinking water in China's western rural catchment area, I choose Qingyang City in Gansu Province as the typical demonstration region to study the construction technology, protection technology of the harvested rainwater source, the water treatment technology of harvested rainwater and the water supply safety technology; to form three technology systems of harvested rainwater source protection, construction and treatment; to set up technology regulations of harvested rainwater protection and pollution control in China northwest region. Demonstration region will adopt cyclone desander to remove the particulate pollutant of harvested rainwater source; use rough and slow water treatment technologies to remove the organic pollutant which make the village harvested rainwater source protected effectively and make the treated water up to the China national drinking water standard. It alleviates water problem of local people effectively and gives support of local agriculture development.