Pulp & Paper Industry Wastewater Treatment

pulp and paper wastewater

The wastewater produced by industrial operations has a significant impact on the environment. Pulp-and-paper industry is a large consumer of fresh water and an important source of wastewater, generated during various stages of pulping and papermaking activities. The produced wastewater has detrimental impacts on the environment and poses a serious threat to the wild and human life. This industry produces the third largest amount of wastewater after primary metals and chemicals industries.

This wastewater contains a variety of organic and inorganic contaminants that mostly originate from tannins, lignins, resins, and chlorine compounds. COD, TSS, nitrogen compounds, and adsorbable organic halides (AOX) are the major contaminants that should be removed and/or minimized in wastewater treatment plants through a series of treatment processes. The treated wastewater can be recycled for reuse in the pulp-and-paper industry, if its quality permits, or it can be released to the environment if its quality meets the environmental standards.

Wastewater is generated in various processes of the pulp-and-paper industry, including wood debarking or chip making, pulp manufacturing and bleaching, paper manufacturing and fiber recycling. All of these processes are consumers of fresh water and producer of a large volume of wastewater.

FARAN customized pulp and paper industry wastewater treatment package is consisted of the following steps:

  • Flocculation and Coagulation for removal of suspended solids, colloidal particles, toxic compounds, floating matters, and colors from wastewater
  • Dissolved Air Flotation(DAF)
  • pH adjustment
  • Anaerobic Biological Treatment
  • Aerobic Biological Treatment

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