Water shortage and needs for wastewater re-use in the north China

2006 ◽  
Vol 53 (9) ◽  
pp. 35-44 ◽  
Author(s):  
X.C. Wang ◽  
P.K. Jin

This paper analyses the present condition of the water shortage in north China where annual rainfall is low and per capita water resource is below the line of regular water stress, or even the line of absolute water scarcity. Of the available water resources, the percentge of water withdrawal in all the north basins is high – the Yellow River and Huai River basins being greater than 80% and the Hai River basin mainly depending on interbasin water transfer. Over-withdrawal of water also results in serious water environmental problems including “flow cut-off” of the Yellow River main channel and water pollution of many rivers. The paper also analyses the potential of wastewater as a resource and the demand for treated wastewater re-use. In north China, due to low rainfall and high potential evaporation environmental re-use, gardening, afforestation, etc. is considered as the main usage of the treated wastewater. Considering the economic restrictions in the less developed area, a decentralised system can be taken as an important option in formulating water re-use strategies.

2014 ◽  
Vol 577 ◽  
pp. 1185-1188 ◽  
Author(s):  
Jun Chen

The study area was located in central coast of Jiangsu Province, China. The coast between Wanggang estuary and Chuandonggang estuary belonged to a typical accumulation muddy coast. When the Yellow River flowed into the Yellow Sea using the Huai River course, the coast deposited rapidly and the coastline advanced to the sea about 60 km. The deposition source stopped after the Yellow River returned to the north and flowed into the Bohai Sea. The entral coast of Jiangsu still maintained a high deposition rate in the supratidal zone because of the erosion supply of the abandoned Yellow River delta. But the subtidal zone was in the erosion state. The coast entered into the adjustment period in the 21st century and showed the equilibrium of the erosion and deposition. In recent years, the supratidal area decreased because of the reclaimation. The living space of the salt marshes was limited. The reclamation potentiality will be limited too in the future.


Author(s):  
David A. Pietz

Flowing through the North China Plain, one of China’s major agricultural regions, the Yellow River has long represented a challenge to Chinese governments to manage. Preventing floods has been an overriding concern for these states in order to maintain a semblance of ecological equilibrium on the North China Plain. This region’s environment is heavily influenced by seasonal fluctuations in precipitation, leading to a long history of famine, particularly in the late 19th and early 20th centuries when water management structures disintegrated with the deterioration of the imperial system. In the 20th century, new civil and hydraulic engineering techniques and technologies held the promise for enhanced management of the region’s waterways. After 1949, the new government of the People’s Republic used a hybrid approach consisting of the tenets of multipurpose water management combined with the tools of mass mobilization that were hallmarks of the Chinese Communist Party. The wide-ranging exploitation of surface and groundwater resources during the Maoist period left a long shadow for the post-Mao period that witnessed rapid consumption of water to fuel agricultural, industrial, and urban reforms. The challenge for the contemporary state in China is creating a system of water allocation through increased supply and demand management that can sustain the economic and social transformations of the era.


2020 ◽  
Vol 546 ◽  
pp. 109691 ◽  
Author(s):  
Guoqiao Xiao ◽  
Yuqi Sun ◽  
Jilong Yang ◽  
Qiuzhen Yin ◽  
Guillaume Dupont-Nivet ◽  
...  

2010 ◽  
Vol 408 (16) ◽  
pp. 3139-3147 ◽  
Author(s):  
Li Wang ◽  
Guang-Guo Ying ◽  
Jian-Liang Zhao ◽  
Xiao-Bing Yang ◽  
Feng Chen ◽  
...  

2020 ◽  
Vol 27 (14) ◽  
pp. 16816-16826 ◽  
Author(s):  
Jinglan Feng ◽  
Qi Liu ◽  
Xiangli Ru ◽  
Nannan Xi ◽  
Jianhui Sun

2014 ◽  
Vol 644-650 ◽  
pp. 6347-6350
Author(s):  
Yan Li ◽  
Zi Jian Zhu ◽  
Sheng Yang Li

Water resources reasonable disposition is a measure to solve water shortage problem, cannot still meet the requirement of practice for the knowledge of complex water resources system and the method of describing and other theoretical research. The Yellow River has faced the dry-up of the Yellow River. A Synthetic Decision Support System (SDSS) for water resources dispatch and allocation, based on a new route and method to water resources dispatch and allocation derision-making was developed in order to gain a better understanding of the water resources dispatch and allocation. The paper completes the design of the main structure and functions of the system, and introduces the key techniques of implementing the system, through the analysis of application subject and information integration manner of the system, topological relationship between the water conservancy project entities in various river basins is established using the thought of graphic-topology and tree-topology. Adopting the data warehouse technique, the integration method of facing the decision subject, separation method of the user interface and application program, the method of water resources dispatch and allocation service model based on topological relationship, is established. The model is integrated with the scenario experiences and knowledge about the water resources dispatch and allocation accumulated by the experts and developers. The system has been put into application successfully, and satisfied effects are obtained, therefore it is worthy to be improved and popularized and has the great directive significance and applied value in optimum operation regulation and uniform management of water resources.


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