Abstract
How to allocate the limited water consumption and pollutant carrying capacity of water function areas to sub-areas and water sectors is key for the practice of the most stringent water resource management decision-making. In response to the joint optimal allocation mechanism of water consumption and pollutant-carrying capacity, joint optimal allocation and the unified quantification problem of multiform benefits, the whole process of joint optimal distribution is refined into the links “water supply—water use and consumption—drainage—pollutant carrying” and the unified quantification method based on the emergy theory to achieve various economic, social, and ecological benefits in different links is proposed. Then the joint optimal allocation joint optimal allocation model of regional water consumption and pollutant carrying capacity is constructed, which realizes the reverse constraint relationship between water quantity and pollution carrying capacity in the water quality and quantity conversion processes. Using Zhengzhou city as an example, the models and methods were applied and researched. Countermeasures and suggestions for the rational allocation of available water resources and water pollution capacity were put forward accordingly.
Highlights
According to the most stringent water resource management system, the total amount of control exercisable over water resources and the benefit of such control over water use and the pollutant carrying capacity limits of the water function area must be implemented simultaneously in the process of water resource utilization and protection [1,2,3]
Given the whole process of “water supply—water use and consumption—drainage—pollutant carrying,” the available water quantity is closely related to the pollutants in the river, and the total amount of pollutants in the river is interrelated with sewage discharge
Combined with the basic data of water resources, economy, society, and ecology in ‹‹the statistical yearbook of Zhengzhou city›› and ‹‹The water resources bulletin of Zhengzhou city››, the emergy parameters involved in joint optimal allocation process are calculated by the emergy calculation method, which mainly include emergy transformity of different water bodies and emergy parameters of water sectors
Summary
According to the most stringent water resource management system, the total amount of control exercisable over water resources and the benefit of such control over water use and the pollutant carrying capacity limits of the water function area must be implemented simultaneously in the process of water resource utilization and protection [1,2,3]. Sewage discharge is related to the allocation of domestic water, production water, and ecological water, as well as the benefit of using water. This requires that the water distribution, water function zone assimilative capacity distribution, and water use benefit improvements be unified across water resources in order to optimize allocation. Water 2020, 12, 1101 amount into the river from terminal drainage link, and meet the requirements of available water supply of water sources and pollutant carrying capacity of the water functional area at the same time. The water use efficiency is improved and the reasonable distribution of the limited water consumption and pollutant carrying capacity is realized
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