The future emission standards should not only fully reflect the scientific based environmental management concept, which is a clear management responsibility of state and local governments, but should be based on comprehensive considerations.

Firstly, due to the uneven level of local economic development and water environment capacity, environmental problems vary greatly. It is difficult to manage the current water environment problems well by using a unified sewage treatment discharge standard. Therefore, the main responsibility of the country is not to develop specific standard values, but to establish a complete and scientifically reasonable system and method for establishing standards, and to develop emission standards according to local conditions. That is to say, on the one hand, basic and more lenient standards should be established, rather than a specific standard. Loose standards do not necessarily mean they are detrimental to environmental protection. Loose standards are conducive to the development and implementation of specific emission standards in the local area. On the other hand, the power to formulate local standards should be strengthened to assist in their formulation.

Secondly, it is necessary to consider a comprehensive analysis of the entire system of standard discharge, processing, and user after sewage treatment, the interaction between the three, and the economic and technically feasible emission standards for the level of work. The emission standards consider the implementation of regulations and constraints that significantly affect the stable operation of wastewater treatment plants, such as the discharge of a large amount of industrial wastewater and leachate from garbage. In water treatment, it is important to consider the characteristics of standard sewage treatment, especially in biological treatment, water quality monitoring values, for a period of 7 days or longer, in order to better reflect the operational status of public treatment facilities. The intended use of wastewater considered by users, as well as the requirements for wastewater reuse and landscape water replenishment. There is no water added to the dry river in the northern region, which is reflected in the standard and should be considered in the standard.

In addition, sewage treatment discharge standards are not product standards because consumer sewage treatment and sewage treatment are a public welfare. The evaluation of public welfare standards should not only focus on a few simple values, but also include sampling methods, implementation evaluation methods, and in-depth investigation and research. At the same time, the government should guide industry associations to fully leverage their own advantages, provide feedback on survey standards, and actively participate in feedback surveys and revised standards in the past few years. The development or revision of these standards is very meaningful.