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energy-saving, discharge-reduction and the control of pollution source, expecting a
new turning point of China‘s environmental protection. However, the elimination of
and recovery from environmental pollution is a long and strenuous process.
Recycling economy, clean production and rehabilitation are the basic principles to
follow. How to tackle emergent impact and how to guarantee the safety of daily
drinking water? These issues should be handled with priority, considering the current
conditions of frequent water source pollution.
In order to guarantee drinking water safety, Research Center for Eco-Environmental
Sciences, CAS, specially set up Drinking Water Science and Program lately. They
have made major achievements concerning technological research of the
Three-level Guarantee Systems including deep- water purification, water distribution
and cyclic stability, and risk- evaluation of water quality, which are the terminal
control of drinking water safety. The terminal control technology of drinking water
safety has been put into use in the Olympic Village. In order to greet Green Olympics
and guarantee water quality, many Chinese scientists and people in other walks of
life have made various contributions.
Here I will put forward my personal suggestions regarding problems surfaced in the
protection of China‘s drinking water quality, especially concerning the central water
supply system in townships in the wake of China‘s rapid urbanization.
The Ideal Model of Water Quality Management
Water Quantity and Quality Recycling System
The acquisition of natural water, water purification, distribution, pollution discharge,
depth disposal, reutilization and return of water constitute the social recycling of
water resources. This is a complete process, during which water quality is
transformed from time to time. It should be comprehensively designed and managed.
Under the background of water shortage and pollution, the trend of central water
supply management in the international community is to build up unified water
quantity and quality recycling system, which combines the disposal, regeneration,
cycling and distribution of water, sewage and rain water. The 21 Century Drinking
Water Works in South California of the United States, Singapore Netwater System
and European Centralized Water Supply Management are all such examples. They
all go through deep- water purification of city sewage and then incorporate it with the
water supply system. In this way, water resources can be utilized to the maximum.
This is a good solution for areas which have serious water pollution or shortage.
China has developed some recycling and reutilization links in the management of
water supply and sewage disposal. However, basically, they are still not centralized.
Currently, China still has a long way to go concerning our perception, economy,
system and technology of management. In order to achieve the goal of central water
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