Air Treatment | Microbial Deodorizing

Deodorizing of livestock barn, food processing factory, the composting facility is required for their business

Deodorizing is one of the important business issues for livestock business.

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Complaint to livestock farmers (2012)*

Deodorizing is required in other industries:

  • Food-processing facilities;
  • Hotels・restaurants;
  • Kitchen waste disposal facilities;
  • Composting facilities;
  • Feed manufacturing.

Porous Alpha enables the low-cost deodorizing solution.

Layered Porous Alpha with microbes, deodorizes the odorous gas when the gas passes through.

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Conceptual figure of a deodorizing system with Porous Alpha.

Microbes derived from manure, contained in Porous Alpha, digest gases in the interconnected pores.


Concept image of the deodorizing process.

Diversified & interconnected pores in Porous Alpha is the source of high performance of deodorizing.

Porous Alpha durability & cost are the big advantages when compared to the competing solution based on rock wool.

Porous Alpha for livestock solution compared with deodorizing material rock wool.

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We have various experience in deodorizing implementation.

Summary of case studies for microbial deodorizing.

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Specification and applied conditions for deodorizing by Porous Alpha.


  • The moisture of support (Porous Alpha) should be more than 50%;
    • In the summer season, Porous Alpha becomes dried. Watering should be more frequent than other seasons. Water for watering should be maintained;
  • If there is the risk of frost, measures to prevent it are required;
  • The salt concentration of water should be less than 5,000 ppm;

Blower and its power source is required to transfer the odorous gas.

Source of odor should be enclosed so that the blower can suction the gas.

A filter at the end of the pipe for blower should be installed and changed periodically.

The required period of habituation for microbe: About 1 month.

Temperature for the active performance of microbe: 10 – 40 ℃ (There is an experience of working less than 10℃).

Track record of an odorous gas source:

  • Pig house compost;
  • Poultry house compost;
  • Food waste compost;
  • Hotel restaurant compost;

Track record of odorous gas:

  • Ammonium;
  • Methylmercaptan;
  • Hydrogen sulphide;
  • Trimethylamine.