Deodorization at the sludge compost center managed to remove 7 times more foul odor compared to conventional methods (Introduced to: A large sludge composting facility) - Deodorization and Composting equipment - Miraie

CASE STUDY

Construction example

2021.10.30 DEODORIZER

Deodorization at the sludge compost center managed to remove 7 times more foul odor compared to conventional methods (Introduced to: A large sludge composting facility)

Delivered to:Composting facility for sludge, etc.
Problem 1:Foul odors have a high concentration in the secondary fermentation tank
Problem 2:Humidity inside the secondary fermentation tank is too high, so condensation forms in the building. Moisture does not evaporate properly.
Problem 3:Measures are needed for foul odors, and consideration must be made for the surrounding environment.
Overview:Porous glass deodorant is installed in the secondary fermentation facility, as a measure against foul odors. By ensuring adequate aeration, reduce humidity inside the fermentation facility, prevent condensation and building corrosion, and improve moisture evaporation in composting.
Measures and Effects

This facility is divided into 2 buildings: the primary fermentation building and the secondary fermentation building. There was no deodorization equipment in the secondary fermentation building.

As a result of this, humidity inside the fermentation building rose very high to about 90%, and the building suffered from condensation and corrosion.

When humidity was high inside the facility, there was little moisture evaporation during composting, so composting took longer than normal.

Rock wool deodorization equipment is installed in the primary fermentation building, but it would incur high monetary costs to install the same type of equipment in the secondary fermentation building.

To ensure sufficient aeration in the secondary fermentation building, it was necessary for equipment to be highly effective at removing even small amounts of odor.

This new porous glass deodorant equipment was built for the secondary fermentation building.

It occupies the same area as existing deodorization equipment, but has the ability to process three times the amount of exhaust gas as existing equipment.

This is the inside of the deodorization tank. The area under the net is filled with porous glass deodorant.

Effects of Improvement

The table on the left gives a summary of the benefits of introduction.
It releases three times as much exhaust gas as existing rock wool deodorization equipment, removing the gas almost completely.
It was very effective, with a removal ability more than seven times as high as rock wool.

After porous glass deodorant equipment was installed, humidity decreased inside the fermentation building, and the amount of moisture evaporation during composting drastically increased.

Moisture of the matured compost was
60% before delivery, down to 40% after delivery
It is now possible to produce high quality compost in a short time.