"What kind of innovation should be made in the future automatic control system for sewage treatment plants ... We should encourage diversified development and diversified implementation modes, integrate elements of regional characteristics, consider historical and cultural backgrounds, coordinate with human settlements and the natural environment, and make To energy, resource-based, ecological, landscape, intelligence and personalization, and scientific research and human environment education base or landmark facilities. A future direction of sewage treatment technology development The future urban sewage treatment process will continue to be an extension of the existing technology and the continuous improvement of new and improved technologies. From the past development point of view, urban sewage treatment process is continuously improved and upgraded, the removal of objects from the development of organic nitrogen to ammonia, then from ammonia nitrogen to total nitrogen, and the rise of biological phosphorus removal, have reflected the different periods of existing technology and The continuous integration of new technologies and integrated applications. Therefore, we can think that the future development of urban sewage treatment technology is still inseparable from the history of accumulation and engineering experience, any new technology needs to be gradually integrated into the existing system, and then to achieve further capacity upgrading and complete replacement. For example, the development of biological nitrification from general aeration, from biological nitrification to A / O denitrification, and then extended to A2 / O phosphorus and nitrogen removal; microporous aeration, aeration system to make the biological pond sewage Mud concentration can reach the level of oxidation ditch system completely. Judging from current international trends and domestic demand, the main development direction of urban sewage treatment technology is the meticulous management and control of energy consumption, resource utilization and low energy consumption with stable compliance. For example, through the partial or complete recovery of water quality, including the application of reverse osmosis and forward osmosis technologies, it can meet the requirements of specific water use functions and realize the recovery of water for recycle of regional water systems or access to users outside the downstream communities; Of biogas and sewage source heat utilization, recovery of heat, electricity; from sewage or sludge recovery of valuable organic matter into products, and recovery of phosphorus, nitrogen, sulfur and other valuable mineral components. Through the return and improvement of the existing technology, major breakthroughs in engineering application of new technologies and new equipment, as well as the improvement of operation and management capabilities, the improvement of the quality of personnel and skills, the continuous development and continuous upgrading of urban sewage treatment technology, The characteristics of diversification, integration, intelligence, refinement and individuation are shown in the aspects of source control and pipe network function improvement, carbon-nitrogen separation and sludge high concentration anaerobic digestion, high quality reclaimed water production and phosphate recovery, lateral flow And the mainstream process of anaerobic ammonium oxidation achieved further development and technological breakthroughs, and become the future of urban sewage treatment system, the core component. 2 future sewage treatment plant automation system innovation The status quo is the accumulation of time and human wisdom. The future is the continuous development and revision of the present situation. Looking back on the historical process, we can predict the future to a certain extent. When the activated sludge method was born a hundred years ago, it was said that the time was up. Some people said that it will last 100, 500 and even more years. Once in Denmark, a sewage treatment plant, see the oldest trickling filter in operation, the latest anaerobic ammonia oxidation in the construction, the operation of the old pumping station, the new expansion pumping station will be built. In the 1970s and 1980s, the AB technology prevailing in Germany and Austria basically did not add up after the 1990s. However, with the development of energy utilization of wastewater and the development of anaerobic ammonium oxidation, the A section is an effective method for carbon and nitrogen separation. Now there is a trend of return to development. In 1997, when I was visiting Professor Jizhuangzi Sewage Treatment Plant with Prof. Poul Harremoes, he asked very strangely how could you have such a lot of tall deciduous trees in your sewage treatment plant, not afraid of falling leaves falling in the pool in autumn and winter? I said, we Landscaping index requirements, leaves can be manually cleaned. Later noticed that the Nordic wastewater treatment plant with special attention to manpower savings, tend to unattended development, but in Germany to see the number of employees is not less than the number of domestic sewage treatment plants, and there are a lot of PhD and senior technician In addition, university professors will establish close and long-term relationships with one or several wastewater treatment plants. When they visited the Blue Plain Sewage Treatment Plant in Washington, DC, in the United States in 2009, they were amazed at how they proceeded. First, the high-load activated sludge process of the 1950s removed all of the organics, followed by ammoniacal nitrogen nitration in the 1960s, and then all Relying on the addition of deep denitrification of methanol, follow-up water filtration system, the control system is also more primitive, was undergoing automatic control system replacement, the current system of these processes are still running. Significant changes took place in 2015, the plant launched the world's largest thermal hydrolysis of Cambi sludge and sludge high concentration anaerobic digestion system, the use of side-flow anaerobic ammonium oxidation technology, and brings together science and technology in Europe and North America, Carried out the mainstream process of anaerobic ammonia oxidation engineering application research. Therefore, it is unlikely that there will be a definite answer to the future automatic control system for sewage treatment plants. Different people will have different ideas. Different regions may have different practices that can cross history. However, It is impossible to cut off the linkages. We should encourage diversified development and diversified implementation modes, integrate elements of regional characteristics, consider historical and cultural backgrounds, coordinate with human settlements and the natural environment, and achieve energy, resources, ecology and landscape , Intelligent and personalized, and become a base for scientific research and humanistic environment education. Similarly, the demand for future wastewater treatment plant talent will be a combination of managers and managers, a versatile technical support and service team, a skilled and disciplined operations team, and a significant increase in public awareness and participation.