Nghiên cứu tài nguyên nước dưới đất phục vụ nhu cầu nước sinh hoạt tỉnh Ninh Bình

Abstract

Ninh Binh province has 5 groundwater aquifers, in which the most important one forvsupplying water for living are the qp and t2 layers. The fresh water part has an area of 1080 km2 , withvgood quality for living, however, in some places the SO4 2- content biger than QCVN 09:2023/BTNMT in the dry season such as Yen Nhan commune, Yen Thanh commune, Khanh Thuong commune (Yen Mo district). The saltwater part has an area of 799,5 km2 , distributed in areas of Gia Vien, Hoa Lu, Yen Mo, Kim Son districts, Ninh Binh city, most commonly in Kim Son district. The TDS in the t2 layer (the saltwater part) has increased from 1.78 g/l to 4.6 g/l. In the period 2010 - 2024, the static water level in the qp layer decreased from 0,6 - 3,7m to 6,5 - 10,9m, in the t2 layer decreased from 0,2 - 3,3m to 0,5 - 39,2m, especially in some places up to 61,3m. The total demand for domestic water supply in the whole province is more than 60,7 million m3 /year, an increase of more than 40% compared to 2020.