4. Final remarks
The amount of each water pollutant discharged from 3 sources:
industries, household and land use is closely influenced by
the industrial factors (industrial structure, technological level),
demographic factors (population scale, population structure) and
land factors (land type, land area). Both the policies introduced
against the water pollution structure and characteristics and
industrial restructuring have been considered in the model to
meet the WPD constraints with maximum GRP as objective
function.
Production decrease in some sectors leads to industrial
restructuring following an order determined by the WPD coefficients
and value added rate of each industry jointly with industries
having higher WPD coefficients and lower value added
rates as priority. The model forms an OPC which is affected by the
pollutant joint-removal efficiencies of technologies