Pollution Load Estimation and Control Countermeasures of Zhangze Reservoir

Abstract

Raising the water pollution control countermeasures on the basis of rational pollution load estimation is significant for improving water quality. Zhangze Reservoir, the largest water body in Changzhi city, China, was selected for this study. Considering the information constraints of the reservoir basin, the pollution load estimation method system covering point sources, non-point sources, and internal sources is systematically constructed using an export coefficient model, an sediment pore water diffusion model, and other methods, with the aim of estimating the discharge of pollutants into the Zhangze Reservoir from domestic sources, industrial sources, agricultural sources, sediment release, and urban runoff. The findings indicate the following: 1) the pollution loads of COD, NH3-N, TN, and TP are 3,157.82t, 177.62t, 760.72t, and 42.29t, respectively; 2) in terms of the distribution of pollution sources, urban domestic sources top the rest, accounting for 65.47% of COD, 82.83% of NH3-N, 79.00% of TN, and 60.65% of TP, followed by the agricultural source; 3) the total discharge of the main water pollutants exceeds the water environmental capacity, characterized as the dominating existence of domestic point source, the coexistence of point sources and non-point sources, and the coexistence of exogenous sources and endogenous sources. Finally, control countermeasures are raised to minimize the total discharge of pollutants for improving the water quality.

Water Quality Degradation Due to Heavy Metal Contamination: Health Impacts and Eco-Friendly Approaches for Heavy Metal Remediation

“…Surface water sources, including rivers, lakes, and ponds, can be polluted by effluent discharged from a point source via overflow or drainage. In non-point sources, heavy metal contaminants are carried into surface water sources by rainwater runoff (surface runoff) [43]. The heavy metal contamination load (CL) in water can be calculated using Equation (1):…”

Evaluating Effects of Nitrogen and Phosphorus Discharges under Different Reduction Scenarios: A Case of Chaohu Lake Basin, China

“…P iN/P is the discounted N/P fertilizer application in area i (t•a −1 ). Fr N/P refers to the N/P runoff coefficient of agricultural land in the basin [38][39][40].…”

Comprehensive assessment of water management situation in the water bodies of Simferopol

“…Quite a lot of research is devoted to assessing the quality of water, accumulated in the urban area, and determining its safety for the population and vacationers. Such scientists as Liu Y., Smith C.D., Li W., Yin L., Yang L., Zhang M., Meng H., Zhang J., Mecnakshi P., Sriram G., Rodrigues A., Calheiros C.S.C., Sharip Z., Mohamad M.F., Saha A., Ahweyevu J.O., Ferreira V., Magalhaes R., Tamrakar A., Upadhyay K. and many others worked in this direction [4][5][6][7][8][9][10][11][12][13][14][15]. The results of the studies indicate a high level of anthropogenic pressure, exerted on water bodies, which causes a deterioration in the quality of water resources.…”