1. Environmental protection industry Water treatment industry is divided into three categories: circulating water treatment system, comprehensive water resources management, tap water supply and special water treatment.
2, sewage treatment belongs to the comprehensive management of water resources, so it belongs to the environmental protection industry! To put it another way, the primary industry is agriculture, the secondary industry is industry, and everything else belongs to the tertiary industry.
3. China's tertiary industry includes two major departments: circulation and service. Sewage treatment should be regarded as a service industry, but some people think that it is an industrial enterprise and should apply for value-added tax.
4, the so-called sewage treatment plant, that is, the introduction of sewage from various chemical plants for treatment, a process of charging relevant fees accordingly, belongs to the service industry, and business tax should be levied.
5. The operation and management of urban sewage plants, like the operation and management of other industries, is the general name for planning, organizing, controlling and coordinating the whole process of sewage treatment, and it is a part of various management activities of enterprises (such as administrative management, technical management, equipment management and "three industries" management) and the most important part of all business activities of enterprises.