For every tonne of paper produced, the pulp and paper industry processes 50,000 litres of water and is one of the largest effluent generators worldwide. It’s not surprising that reusing water and reducing the cost of wastewater treatment wherever possible is a priority for manufacturers. Stricter environmental regulations and rising water prices demand greater efficiency in both operational processes and wastewater treatment equipment for the pulp and paper industry. [1]

The raw materials and production processes dictate the wastewater composition in the pulp and paper industry. In general, the wastewater is characterized by: sediments, solids, absorbable organic halides (AOX), chlorinated organic compounds, COD and BOD contaminants. Up to one cubic meter of sludge is generated for every tonne of paper produced.

Improve Profitability

The main goal of wastewater treatment in this industry is to capture and remove suspended solids in order to recycle water, reuse pulp and reduce sludge. The recovery and recycling of cellulose fibers reduces cost and waste in the manufacturing process. When engineered correctly, wastewater treatment solutions can significantly improve the profitability of a pulp and paper business by reducing the loss of raw materials and improving environmental performance. [2]

paper and pulp  process effluent

Biocell industrial wastewater treatment systems for pulp and paper processing can target various areas of concern, for example:

  • total suspended solids (TSS)
  • ammonia/nitrogen
  • residual bleaching agents (hydrogen peroxide)
  • organics (organochlorides)
  • water consumption and reuse
  • recovery of solids
  • BOD/COD
  • sludge processing

Primary Treatment of Pulp and Paper Process Effluent

Screens, grid chambers and settling tanks separate solids from liquid effluent. Removing bulky materials from the effluent reduces the generation of primary sludge at the end of the treatment system. Biocell offer a variety of high performance pretreatment screening solutions for pulp and paper process wastewater. Our industrial screens are engineered to separate coarse material from valuable pulp in order to preserve the treatment capacity and efficiency of equipment downstream by reducing sludge.

DAF as Fiber Recovery Technique

DAF is widely used in the pulp and paper industry to clarify raw effluent with up to 99% efficiency in suspended solids removal. Biocell offer a variety of high performance DAF solutions for pulp and paper process effluent including primary treatment, secondary/tertiary clarification, de-inking and fiber recovery.

Containerised Solutions for Pulp and Paper Process Effluent

A containerised solution can be of use where multiple treatment technologies are required and space is limited. Ancillary treatment system devices can be provided in a containerized treatment plant to complete a fully engineered solution for pulp and paper process effluent. Modular units such as pumping stations, sludge dewatering, buffer tanks and odour control can be added to a containerized solution to address a variety of treatment concerns. View our containerized effluent treatment plants for further information.

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