Prof. Dai has long been committed to the theory and technology research on the resource treatment of sewage, sludge and organic waste, served as the chief expert of the National 863 Program, the deputy head of the General Expert Group of the National Key Research and Development Program on "Solid Waste Resourcing" and "Key Technologies and Equipment for Circular Economy", presided over more than 10 national research projects, and has published more than 360 SCI papers, authorized more than 120 Chinese patents for invention and 11 international patents for invention, and published 5 books. Prof. Dai has been awarded the Third National Award for Excellence in Innovation, the 14th Guanghua Engineering Science and Technology Prize, two first prizes of Shanghai Technology Invention Prize, two first prize of Science and Technology of the Ministry of Ecology and Environment, four gold prizes of the International Invention Exhibition, the silver prize of the IWA Project Innovation Award, one of the "Top Ten Chinese Scientific and Technological Achievements in the Ecology and Environment Field in 2021".