Color and odour from integrated pulp and paper mill has been a matter of concern, on aesthetic sense, which has also been addressed in the CREP guidelines for the pulp and paper industry.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/color-removal-pulp-and-paper-mill-effluent-methods-and-industrial-applications
[2] http://admin.indiaenvironmentportal.org.in/category/author/k-s-rajesh
[3] http://admin.indiaenvironmentportal.org.in/category/author/m-singaravel
[4] http://admin.indiaenvironmentportal.org.in/category/author/s-v-subrahmanyam
[5] http://admin.indiaenvironmentportal.org.in/category/journal/ippta
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/paper-and-pulp-industry
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-waste-treatment
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-control