2. Summary pollution inventory. Classification tests

Drawing up a detailed inventory of industrial wastewater pollution by type of industry is proving difficult, due to its complexity and the changing nature of some manufacturing processes. It can be argued that there are as many industrial wastewaters as there are manufactured products.

• Inventory by industrial sector

  However, we thought it would be useful to present a classification of the main industrial sectors below, highlighting the origin of the main pollutant discharges and their main characteristics (table 1 ).

• Inventory by predominant pollutant type

  Alternatively,...