The importance of brown stock washing and dissolved solids optimization for pulp mill efficiency​

Brown Stock Washing optimization and Total Dissolved Solids (TDS)
Liquid Measurements


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In this webinar, Kimmo Koivula will discuss the importance of Brown Stock Washing (BSW) and Total Dissolved Solids (TDS) optimization for pulp mill efficiency.

The development of Vaisala K‑PATENTS® SAFE-DRIVE Process Refractometer for the continuous inline measurement of dissolved solids content in a fiber suspension has made it possible to follow the performance of individual process steps continuously. TDS changes in the feed and outlet stock lines, as well as in incoming and outgoing filtrate lines, can be detected immediately. Unlike conventional methods, e.g. COD, TOC and conductivity, refractometer can detect problem areas and bottlenecks in in all types of individual brown stock washing steps and washing processes, thus providing guidance on connecting the technology to the existing process control systems.

Key topics include:

  • Each individual BSW step to demonstrate how mills can gain immediate profits 
  • Mill case with key findings on performance metrics and ROI
  • Why real-time TDS measurement of wash loss was found to win over COD, TOC and conductivity

 All related Pulp & Paper application notes are available here

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Kimmo Koivula
Sales Manager 

Kimmo Koivula holds a Master's degree from the Helsinki University of Technology and has more than 10 years of experience in automation and optimization of industrial processes. The last 6 years, Kimmo developed his skills as a consultant in Europe and America, supporting industrial plants through cutting-edge technology.

david dicorpo


David DiCorpo
North America Sales Manager

David DiCorpo holds degrees in Chemical Engineering and Business Administration and has more than 30 years experience in instrumentation & control across a broad range of industries.  David has lead global teams in support of customers through the sales – support – service process.