River pollution. Collection of Tejo river water samples and foam to determine the degree of pollution caused by paper mills contaminated

- Image ID: M3EJ9M
Paulo Oliveira / Alamy Stock Photo
Image ID: M3EJ9M
wastewater. Pulp and paper mills are considered one of the most polluting industries worldwide. Paper making process demands large amount of fresh water and produces enormous quantities of wastewater contaminated by a number of organic and inorganic chemicals. Disposal of such wastewater in aquatic bodies can have severe adverse impacts on the living organisms. Here killed all animals and aquatic plants that lived in this part of the river. Abrantes, Portugal.