ĐÁNH GIÁ HIỆN TRẠNG CHẤT LƯỢNG MÔI TRƯỜNG NƯỚC MẶT HỒ SUỐI HAI, HUYỆN BA VÌ, THÀNH PHỐ HÀ NỘI

Tóm tắt

ASSESSMENT OF CURRENT STATUS OF SURFACE WATER ENVIRONMENTAL QUALITY OF SUOI HAI LAKE, BA VI DISTRICT, HANOI CITY, VIET NAM

The paper presents dynamics of environmental quality of surface water of Suoi Hai lake, Ba Vi district, Hanoi city from June 2020 to February 2021. There are 11 studied environmental parameters, including transparency, temperature, conductivity, pH, dissolved oxygen concentration, BOD, COD, total nitrogen, total phosphate, hardness and chlorophyll a. The results of analyses show that the lake water is showing signs of pollution. Some parameters at the sampling points during the monitoring period exceeded the permitted limits of the Ministry of Natural Resources and Environment's national technical regulation on surface water quality (QCVN 08-MT: 2015 / BTNMT). The results of this work also give assessments and comments on the dynamics over time, rainy and dry seasons of the studied environmental parameters. The results of present work provide reference material for regulatory bodies, as well as for follow-up studies on the environment and ecology.