Abstract:
There is a high density of rivers and canals in the Mekong River Delta, but the lack of fresh water for domestic water supply due to the effects of salinity intrusion and acid water from the acid sulphate soils often occurs during the dry season. Due to the fresh water demand all year around, there are thousands of high productivity drilled wells in operation in the Mekong River Delta. The number of wells is increasing yearly according to the water demand. However, the effects of salinity, acid, clay, and chemical materials in the ground water cause the degradation of drilled wells. The paper has identified the reasons for the degradation, that is, the internal problems of wells themselves in the unconsolidated formations in the Mekong River Delta and provided the suitable scientific and technological solutions to improve the well performance.
Keywords:
ground water pollution, unconsolidated formations, well deterioration, well improvement, well pumped productivity.