Method, system and device for allocating total emission reduction of water environmental pollution load

A system for allocating total emission reduction of a water environmental pollution load, comprising:

• a division module, configured to divide a watershed based on terrain elevation information in watershed-related data to generate a plurality of watershed control units, wherein the watershed-related data comprises meteorology, topographic elevation information, land use information, river water quality, runoff, industrial pollution emission, sewage treatment plant emission, population, livestock and poultry breeding, agricultural planting and county GDP of the watershed;
• an estimation module, configured to estimate a pollution load output in each watershed control unit with a watershed control unit as a basic unit and by using an output coefficient method, wherein the pollution load output comprises pollution loads produced by an industrial point source, a sewage treatment plant, agricultural planting, livestock and poultry breeding, and rural life;
• a relative environmental efficiency calculation module, configured to acquire GDP (Gross Domestic Product) of each watershed control unit, and combined with the pollution load output, to calculate relative environmental efficiency of each watershed control unit by using a data envelopment method, wherein the relative environmental efficiency is an economic benefit brought by the pollution output of each watershed control unit;
• a contribution rate calculation module, configured to quantify a contribution rate of a pollution load produced by each watershed control unit to a pollution load of a section of river entering the sea one by one based on a constructed watershed water environmental model, wherein the contribution rate is influence of the pollution load produced by each watershed control unit on a water environment of the section of river entering the sea;
• and
• a pollutant emission reduction scheme formulating module, configured to formulate a pollutant emission reduction scheme considering both an economic benefit and an environmental impact according to the relative environmental efficiency and the contribution rate, wherein the pollutant emission reduction scheme is configured to allocate total emission reduction of the water environmental pollution load for each watershed control unit.