A brief history of sewage treatment industry and the status quo of water pollution treatment in China

5, China's sewage treatment regional development imbalance Due to China's eastern coastal and other economically developed areas, the local government's financial strength is relatively strong, the people's income level is high, the demand for environmental protection and clean environment is greater. Economically developed areas have strong population agglomeration function, relatively dense population and higher urbanization level, and are more suitable for the construction and operation of large-scale sewage treatment facilities. Therefore, the construction of sewage treatment facilities in economically developed areas such as the east coast of China is relatively perfect, and the sewage treatment industry develops relatively fast. In the economically backward areas of the central and western regions, the construction of sewage treatment facilities is still very backward due to the limited comprehensive financial strength and the relatively dispersed population. 1, the potential of the smart water market needs to be released. Smart water will analyze and process massive water information in a timely manner, and make corresponding treatment results to assist decision-making suggestions, and manage the entire production, management and service process of the water system in a more refined and dynamic way, so as to achieve a "smart" state. With the continuous integration of new technologies such as the Internet of Things, big data, cloud computing and mobile Internet into all aspects of the traditional industry, and the continuous integration of emerging technologies and intelligent industries, the development of the smart water industry has obvious prospects. 2, rural sewage treatment into a blue ocean Due to the restrictions of rural economic conditions and the lack of environmental protection awareness of residents, many villages lack a perfect sewage collection system, direct discharge phenomenon is common. At the same time, the treatment of sewage waste in administrative villages is relatively slow, and environmental infrastructure such as sewage waste lags behind seriously compared with cities and counties. Therefore, the urban sewage treatment market has become saturated, and the village sewage treatment market presents a blue ocean. It is estimated that by 2020, the remaining market space for rural water environment governance will exceed 129.8 billion, and the long-term market will be as high as one trillion volume. 3, sewage resources to bring new opportunities "Urban domestic sewage treatment facilities to strengthen the weak points of the implementation plan" proposed water shortage areas, water environment sensitive areas, in combination with water resources endowments, water environmental protection objectives and technical and economic conditions, to carry out upgrading of sewage treatment plants, actively promote the utilization of sewage resources, promote recycled water for municipal utility, industrial water and ecological water replenishment. As of 2018, the national production capacity of recycled water was 35.78 million cubic meters per day, with a utilization rate of 15.98%, which is a big gap from the target of 20% in 2020 and 22% in 2022 in the National Water-Saving Action Plan. If the utilization rate of recycled water reaches 25% in 2025, it is expected to increase by 50.23 million cubic meters/day during the "14th Five-Year Plan" period, and the new investment in recycled water is about 52.8 billion to 89.1 billion.