This article discusses some of the techniques for handling sludge including: sludge thickening, sludge conditioning, sludge dewatering, sludge digestion and sludge storage.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/sludge-disposal-management
[2] http://admin.indiaenvironmentportal.org.in/category/author/sonal-joglekar
[3] http://admin.indiaenvironmentportal.org.in/category/journal/water-today
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/wastewater-recycling
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/waste-disposal
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/science-and-technology