This page contains sites providing engineering, consulting and equipment for pulp and paper mill effluent treatment to protect environment.
Process/Operation |
Materials Used |
General Types of Waste Generated |
Chemical Pulping |
Acids/alkalis, lime, sulfurous acid, sodium hydroxide, sodium
sulfide |
Acid/alkaline waste |
Bleaching |
HCl, Chlorine, Chlorine Dioxide, NaOH, Sodium Hypochlorous, Cheltin,
and Na-hydrosulfite |
Toxic wastewater and wastewater treatment sludge, Acid/alkaline
waste |
Papermaking |
Pigments, clay, filler, dyes, fibers, dyes, rosin, alum |
Wastewater treatment sludge |
Sizing and Starching |
Waxes, glues, synthetic resins, hydrocarbons, rosin, alum, AKD,
|
Toxic waste, including wastewaters add sludge |
Coating, Coloring, and Dyeing |
Inks, paints, solvents rubbers, dyes, clay, TiO2 |
Solvent waste Ink waste Paint waste, Ignitable waste, Toxic waste |
Cleaning and Degreasing |
Tetrachloroethylene, Trichloroethylene, methylene chloride,
trichloroethane, carbon tetrachloride |
Solvent waste, Toxic rinse water |
Here are 15 more facts about the environmental impact of the paper industry,
courtesy -- as is the quote above -- of The State of the Paper Industry, a
report published (on-line) today by the Environmental Paper Network. That is a
coalition of environmental groups that aims to minimize paper consumption,
maximize recycled content, source paper fiber responsibly and employ cleaner
paper production practices. (And don't miss more than a dozen tips for reducing
your own paper waste at the bottom of this post.)