Water is an indispensable natural resource for human development and the material basis for human beings and all living things to survive. In today's world, the water crisis caused by insufficient water resources and pollution has become a major constraint to the complex problems and social and economic developments faced by any country in terms of policy, economy and technology.
In the case of the growing shortage of water resources, the reality of water pollution has added a worry. In many parts of China, many water bodies have been seriously polluted due to various complicated factors, which further exacerbates the contradiction of water shortage.
Today's human society has two major categories of water resources development and utilization:
The first is the amount of water needed to remove the water resources. After meeting the needs of the people's life and industrial and agricultural production, the quantity is consumed, the quality has changed, and the water source is returned to another place.
The other is to take water (hydropower), develop water transport, aquatic products and water recreation, maintain ecological balance, etc. This kind of utilization does not need to divert water from the water source, but it needs a certain water level, flow and flow in rivers, lakes and estuaries. Water quality.
The main ways to solve the problem of water stress are:
1) Reduce industrial water consumption and increase water reuse rate
2) Implement scientific irrigation to reduce waste of agricultural water
3) Recycling urban sewage and opening up second water source
To solve the water problem that is closely related to human social life in reality, modern water treatment technology and water treatment equipment must be used.