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Deodorization

Hidroglobal is also specialist in deodorization technologies due to its large experience working in residual water treatment plants with either industrial or municipal effluents. These are treatment processes that are complementary to waste water treatments, especially when the facility is near a town.

The main system used for deodorizing is dry contact towers, which are dimensioned according to the local requirements either in confined or open-air facilities.

+ Deodorizing Systems

The main technology used is contact towers with Activated Carbon, which absorb the particles suspended in the air that are the cause for bad smell. Activated Carbon absorbs the molecules which are present either in a fluid o in the air and bad odors are efficiently removed.

This technology is applied either in the whole waste water treatment process or only on the sludge treatment phase. In both cases the air is absorbed by an exhauster who transfers the air to the Activated Carbon Tower. The Activated Carbon Tower has been dimensioned and designed for the specific application.

The exhauster is dimensioned to surpass the pressure loss in the admission collector. Activated Carbon head loss can be controlled with pressure differentials (pitot type) that are integrated in the tower.

+ Related Challenges

The performance of Activated Carbon Towers is influenced by the following factors:

  • Type of Activated Carbon (AC) used: Which will depend on the application
  • Substance that has to be Absorbed: Gases or vapors with a high molecular mass and boiling temperature are generally well adsorbed. With hydrocarbons and sulfur, it is necessary a to apply a special coating so it can be absorbed by the AC.
  • Temperature: The lower the better
  • Concentration: The higher the concentration of odor particles the higher the requirement of absorbent agent.
  • Humidity: Should be between 70 and 75%
  • Flow speed: The lower the speed of the agent to be removed the more efficient will be the retention by the AC.
  

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