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Clean Air
Pharmaceutical Industry

ODOUR SCRUBBER
STORAGE TANKS
ACID SCRUBBER
AIR SCUBBER

Alkaline scrubber in the pharmaceutical industry

Solvents are often used in the production of all kinds of medicines in the pharmaceutical industry. These types of solvents (e.g. phenols and hydrogen fluoride) are often released in a process line. An alkaline scrubber can remove acidic components from an air stream. By adding a base (lye), the pH of the washing water is raised and the acid forming components are neutralized whereby salts are formed. The dosing of the base is done by means of a pH control, in most cases the pH value of the washing water varies between 7 and 12.

Depending on the salt formed, more or less washing water is discharged, this is measured on the basis of density and/or conductivity. The drainage can contain up to 15 % of salts and is discharged or evaporated for reuse.

Usually caustic soda (NaOH) is added as a base to the washing water. Often an alkaline scrubber is designed in combination with an odour scrubber. Besides caustic soda, a chlorine solution is dosed to oxidize all odour components. For more information please refer to the odour scrubber.

Alkaline scubber Wet scrubber Pharma

Alkaline scrubber in the pharmaceutical industry

Solvents are often used in the production of all kinds of medicines in the pharmaceutical industry. These types of solvents (e.g. phenols and hydrogen fluoride) are often released in a process line. An alkaline scrubber can remove acidic components from an air stream. By adding a base (lye), the pH of the washing water is raised and the acid forming components are neutralized whereby salts are formed. The dosing of the base is done by means of a pH control, in most cases the pH value of the washing water varies between 7 and 12.

Depending on the salt formed, more or less washing water is discharged, this is measured on the basis of density and/or conductivity. The drainage can contain up to 15 % of salts and is discharged or evaporated for reuse.

Usually caustic soda (NaOH) is added as a base to the washing water. Often an alkaline scrubber is designed in combination with an odour scrubber. Besides caustic soda, a chlorine solution is dosed to oxidize all odour components. For more information please refer to the odour scrubber.

 

 

The advantages of an Air Solutions alkaline scrubber are:

  • Completely made of plastic to prevent corrosion
  • Relatively compact
  • Horizontal and vertical airflow possible
  • Very high removal efficiency
  • Can be built modular, multi-stage systems
  • The formed salts can be reprocessed and reused

 

Air Solutions has experience with alkaline scrubbers in the following industries:

  • MDF wood pressing (formaldehyde)
  • Waste treatment plant (hydrogen sulphide H2S)
  • Chemical industry (chlorine neutralisation)
  • Pharmaceutical industry (phenols and hydrogen fluoride)

 

In addition to alkaline scrubbers, Air Solutions Holland also offers acid scrubbers, odour washers and plastic chemical storage tanks.

 Quality marks:

  • ISO 9002
  • CE
  • KIWA
  • VLAREM
  • DVS welding certification