摘要：According to the development of ecotourism, tourism development model and policy environment, it is very conducive to the development of tourism and has a strong driving force for development. Along with the rapid development of global informationization and technology, people's work efficiency is getting higher and higher, and leisure time is also increasing. However, due to the pressure of work, competition and fast-paced lifestyle, people began to pursue spiritual relaxation and satisfaction on the basis of meeting the needs of the material. The emergence of small town tourism satisfies people's spiritual needs. Environmental protection in tourist towns based on ecological theory is studied. The major purpose of this paper is to treat the sewage via low temperature process. The result shows that the best COD removal was 65.11%.
