Sustainable Urban Water Resources Planning And Water Eco Environment Rehabilitation

The whole world is experiencing the fastest urbanization in its history, not to mention over a hundred new city development projects taking place in China. Urbanization brought along rapid population growth and increasing resources demand. Uncontrolled and over exploitation of water resources has worsen the water environment's health which has already been destroyed over years. However, spatial layout and landuse planning still drives new city's development while infrastructure and resources planning are considered as supplementaries. It's rarely seen that water resource planning is integrated organically with social, economical, industrial development and society building. Most of the so called sustainable water resources planning are still stuck at theoretical level. Urban water resources shortage is still seen and getting worse in most cities and regions. It's is known that only suitable, sustainable, practical water resource planning which corresponds to specific urban development characteristics that could ensure we could enjoy the limited water resources on earth, as well as for generations to come.This research aims to use the dialectical relationship between water's natural recycling and social recycling as theoretical foundation to analyze the development and transition of water's social recycling status under modern urbanized settings and the dynamic correspondence of water's natural recycling status. Upon this, the development and transition of water demand from urban development could be drawn. The study on explicit and implicit urban water demand and the balance between their supply and demand counterparts would help draw the strategics for urban water resources allocation and sustainable planning. Adopting the advanced urban sensitive water resourses planning concept, the current water intake, consumption, discharge and resources allocation schemes in China were reviewed. A harmious water consumption scheme which responds to the urban development and respects the water eco environment was proposed based on urban sensitivity analysis of various water resource planning scenarios. Learning from the successful river basin management cases worldwide, it's not hard to conclude that the unsustainable urban water resources issue doen't not lie on the city itself, rather shall be attributed to the unhealthy water eco environment of the entire river basin. Therefore, a whole new perspective of integrated river basin management shall be established to review the relationship between urban water recycling status and river basin water environment health status. It's believed that mastering the problems faced by the water environment of the river basin is the only effective solution to solve urban water shortage issues.Upon theoretical research, the author joined the working team of Sino-Singapore Tianjin Eco City's water resources planning and water environment eco rehabilition and put the theoretical conclusions into practice. Considering the local water resources baseline and Eco City's development positioning, the research on finding the balance and meeting points of explicit and implicit water demand was carried out during the water resources allocation planning. Non-conventional water resources exploitation was also brought up to optimize the water supply framework. Urban sensitive water planning concept was applied in integrating the water environment, eco environment, living environment and economic environment within eco-city with the external waterways and river basin environment to analyze the impact of various water resource planning scenarios on city components. Sensitivity analysis of various city components'response was carried out and feedback was gathered to facilitate the decision making during water resources planning. Meanwhile, the concept of integrated river basin management was put into practice during Eco City's water environment eco rehabilitation. To ensure the ground water quality meet the required waterbody's functional standard, technology roadmapping for rehabilitate the polluted water body was studied. Integrating with spatial planning, waterways and water environment was established within the Eco City planned site while water discharge and replenish standards were clearly tabled. Considering the local characteristics of China, sustainable water resources planning could not be achieved with technical planning and engineering means only, but also under the guidance of supporting policies as well as public outreach programme. Eco City's water resource planning also included the study on water saving strategies and water resource management practices and work plan.This research is innovative in terms of redefining the relationship between natural water recycling and social water recycling under modern society settings. Under the guidance of which, the explicit and implicit urban water demand could be drawn. It's also pointed out that finding the balance and meeting points between various water demand and supply components would be critical in optimizing the water resources allocation framework. Two important concepts were highlighted in this research, namely urban sensitive water resource planning and integrated river basin management, both of which have been tested their practicability during Eco City's water resources planning and water environment rehabilitation.While China is undergoing rapid urbanization, both the theoretical study and site application of this research would offer valuable references for other cities facing water resource shortage and destroyed water environment issues. It also delivers a whole new concept in seeking sustainable and harmious urban water recycling schemes for urbanized areas.