Improved Unsteady Water Quality Model for Plain River Network and its Application

Abstract:

For the problems of unsteady water quality change caused by complicated flow in a plain river network a nonlinear flow calculation model is applied to adapt different hydrological conditions, and flow adjustment factor is introduced to water quality calculation model based on the upwind difference schema. The flow adjustment factor forms are given with different flow direction in a river. The parameters of the water quality calculation model are calibrated and validated by observed data in the study area. The results show that the improved water quality calculation model has high simulation accuracy and reliability. Aiming at the serious water pollution in the local area of the plain river network, four combination schemes on water diversion and reduction of pollution load are calculated, and the water quality improvement effect analyzed. The practice provides a feasible calculation way for unsteady water quality change in the plain river network and scientific decision making for the local government.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 3662-3667
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.3662
• Online since: May 2012
• Authors: Fei Su, Zeng Chuan Dong, Hai Bo Xu
• Keywords: Flow Adjustment Factor, Plain River Network, Unsteady Flow, Water Quality Improvement Scheme

References

[1] Chu J. D: Journal of Hydraulic Engineering. Vol. 10 (1994), p.14 (In Chinese).

[2] Chau K. W., Jiang Y. W: Chemosphere. Vol. 9 (2003), p.1615.

[3] Kazmi, Absar. Water Science and Technology. Vol. 36 (1997), p.193.

[4] Salterain A: Water Pollution VII: Modelling, Measuring and Prediction. Vol. 9 (2003), p.13.

[5] Sen D. J., Garg N. K: Irrig. Drain. Eng. Vol. 128 (2002), p.13.

[6] Nguyen Q. K., Kawano H: J. Hydraul. Eng. Vol. 121 (1995), p.744.

[7] Water Conservancy Bureau of Yuyao city: Report of decision support system for flood control operation in Yuyao city(2003). (In Chinese).

[8] Zheng. Q: Journal of North China University of Technology. Vol. 1 (2003), p.26. (In Chinese).

[9] Liu. P: Journal of Guizhou University(Natural Science). Vol. 3 (1998), p.216. (In Chinese).