1. The importance of sewage treatment

Water is the source of life, and clean water resources are very important for human survival and development. However, if industrial wastewater and domestic sewage are directly discharged into natural water without treatment or incomplete treatment, it will not only destroy the balance of ecosystem, but also threaten human health. Therefore, strengthening sewage treatment capacity and improving treatment efficiency and technical level play an irreplaceable role in protecting the environment and ensuring people's quality of life.

2. Current challenges

Waste of resources: Traditional sewage treatment methods are often accompanied by a large amount of energy consumption and the use of chemicals, and there is a certain waste of resources.

The complexity of pollutants has increased: the application of new materials and the development of medicine, pesticides and other industries have brought more and more kinds of harmful substances in sewage, which has brought great challenges to the existing treatment technology.

Improvement of standards: People's requirements for ecological environment are constantly improving, and the requirements of countries and regions for water quality are becoming increasingly strict, which puts forward higher standards for sewage treatment.

3. Development trend and direction

3.1 Green treatment process

Developing new sewage treatment technologies with low energy consumption, less chemical dependence and even zero emission, such as biofilm method, constructed wetland and other ecological engineering measures, can not only effectively purify water quality, but also promote ecological environment restoration.

3.2 Resource recycling

The sewage treatment process is regarded as a process of resource recovery, and useful substances (such as phosphorus and nitrogen) are extracted from the wastewater through advanced separation technology and transformation means, so as to realize waste turning into treasure and reduce the demand for external resources.

3.3 Intelligent management

Use modern information technologies such as big data, cloud computing and Internet of Things to optimize the monitoring and control of sewage treatment facilities, improve system automation and service efficiency, and reduce operating costs.

3.4 Multi-cooperation mechanism

Encourage the government, enterprises and all walks of life to participate extensively, form a good situation of promoting the innovation and application of sewage treatment technology by various parties, and jointly build a water-saving society.

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Facing the increasingly severe water pollution situation, we must take more active and effective measures to meet this challenge. Under the guidance of environmental protection objectives, it is of far-reaching significance to continuously explore and practice the development direction of sewage treatment suitable for national conditions for promoting comprehensive, coordinated and sustainable economic and social development.