T/CSES 51-2022 Active

Main technical content: For different types of water environment control units, including plains river network areas, plains levee areas, mountainous and hilly areas, urban areas, etc., general and specialized technical methods for assessing non-point source pollution loads are proposed, covering planting industries, urban rainfall runoff, rural living, rural livestock and poultry farming, aquaculture, etc. Details of various technical methods and the sources and usage methods of some important parameters are also provided. At the same time, based on the difficulty of obtaining the necessary data, the availability of data, and the method of determining parameters, the applicability of non-point source pollution load assessment methods is evaluated and classified. A classification table of assessment methods with three difficulty levels—simple, moderate, and complex—is provided to help users quickly select assessment methods of different difficulty levels according to their actual needs.