Next Article in Journal
Choosing a Water Distribution Pipe Rehabilitation Solution Using the Analytical Network Process Method
Previous Article in Journal
Effects of Bank Vegetation and Incision on Erosion Rates in an Urban Stream
Previous Article in Special Issue
Long-Term Scheduling of Large-Scale Cascade Hydropower Stations Using Improved Differential Evolution Algorithm
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Water 2018, 10(4), 483; doi:10.3390/w10040483

An Integrated Method for Accounting for Water Environmental Capacity of the River–Reservoir Combination System

1
Ministry of Education Key Lab of Water and Sand Science, School of Environment, Beijing Normal University, Beijing 100875, China.
2
College of Resources and Environment, Yangtze University, Wuhan, 430100 China
3
Sate Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
*
Authors to whom correspondence should be addressed.
Received: 31 January 2018 / Revised: 26 March 2018 / Accepted: 11 April 2018 / Published: 14 April 2018
(This article belongs to the Special Issue Adaptive Catchment Management and Reservoir Operation)
View Full-Text   |   Download PDF [35539 KB, uploaded 14 April 2018]   |  

Abstract

The security of drinking water is a serious issue in China and worldwide. As the backup source of drinking water for the Changde City in China, the Huangshi Reservoir suffers from the threat of eutrophication due to the water quality of the reservoir ecosystem being affected by the tributaries that carry Non-Point Source (NPS) pollutants. The calculation of the water environmental capacity (WEC) can provide a scientific basis for water pollution control, which refers to the maximum amount of pollutants that the water can accommodate. In this paper, according to the hydrological characteristics of the river–reservoir combination system, a one-dimensional (1-D) water quality model and the Environmental Fluid Dynamics Code (EFDC) model were chosen to calculate the water environmental capacity of each functional zone in this basin. The quantity control of pollution from the tributaries was conducted based on the combined results of the water environmental capacity calculation from the EFDC model and a one-dimensional (1-D) river water quality model. The results show that total water environmental capacity of the tributaries included a chemical oxygen demand (COD) of 421.97 tons; ammonia nitrogen (NH3-N) of 40.99 tons; total nitrogen (TN) of 35.94 tons; and total phosphorus (TP) of 9.54 tons. The water environmental capacity of the Huangshi Reservoir region accounts for more than 93% of the total capacity. The reduction targets of the major pollutants in the Huangshi Reservoir and its four major input rivers, which are, namely, the Bamao River, the Longtan River, the Fanjiafang River, and the Dongtan River, have been determined to achieve the water quality objectives for the reservoir in 2020 and 2025. The results will be helpful for the local water quality management and will provide a valuable example for other similar water source reservoirs. View Full-Text
Keywords: drinking water resources; water environmental capacity (WEC); Environmental Fluid Dynamics Code (EFDC) model; the Huangshi Reservoir drinking water resources; water environmental capacity (WEC); Environmental Fluid Dynamics Code (EFDC) model; the Huangshi Reservoir
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Zhao, F.; Li, C.; Chen, L.; Zhang, Y. An Integrated Method for Accounting for Water Environmental Capacity of the River–Reservoir Combination System. Water 2018, 10, 483.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top