Manufacturing Today - Volume 18, Issue 2 - 19

TIMUR DUNAEV | COLUMN BY

remain trapped in pores in the adsorbent media.
Adsorbent filters, at peak performance, result in very clean air. However, performance of these systems
diminishes as the compounds pile up
inside the filter. The adsorbent media
must be cooled, cleaned and re-activated - or simply replaced - causing
down time and extra expense.

content, allowing for aerobic degradation that precludes the formation
of odorous compounds.

[H2] Biological odor
control methods
Instead of oxidizing odorous compounds using physical or chemical
means, biological odor control methods rely on bacteria and other microorganisms to metabolize them.

[H3] Ozone

Each industrial facility is unique. Its
inputs, processes, ventilation and
wastewater treatment characteristics
all play a role in the formation and release of odors and emissions. Certainly, one size doesn't fit all.
Successful industrial odor and emission control brings facilities in compliance with regulations and returns
them to the good graces of their neighbors. Carefully consider your on-site
capabilities and any applicable rules
or directives to determine which odor
control solution will be most effective
at the most economical cost. mt

Timur Dunaev leads business development, process and

research efforts for BioAir Solutions, focusing on holistic odor
control. Prior to that, he worked in and managed process design
and development for the industrial and municipal wastewater
treatment industry for the first five years of his career. Timur holds
a B.Sc. in Environmental Engineering from Middle East Technical
University and an M.S. in Water Resources and Environmental
Engineering from Villanova University. Timur is an EIT in the state of
Pennsylvania. Visit www.bioairsolutions.com for more information.

VOLUME 18, ISSUE 2 manufacturing-today.com

19

O P E R AT I O N S

Choosing the right method

L EADERSHIP

C OMPETITIVE EDGE

I NDUSTRY 4.0

L AST PAGE

A CCOUNTING

Collected air is forced upward
through a vessel filled with synthetic
media. Water containing microorganisms is constantly recirculated
through the system. The microorganisms in the water feed off the odorous
compounds headed toward the top of
the chamber and clean air is released.
These systems rely on the odorous air
running through them to maintain an
environment where the microorganisms can thrive.

Biotrickling filters feature microorganisms that grow within structured
synthetic media inside a reactor vessel. Irrigation water passes through
the vessel to rinse away the metabolized compounds as the air travels upward. Unlike bioscrubbers, biotrickling filters do not recirculate water.
As an added benefit, the introduction
of new irrigation water allows these
systems to support a wider variety of
microorganisms, making them able to
eliminate a greater diversity of odors
and emissions.

S PACE TECH EXPO

[H3] Bioscrubbers

[H3] Biotrickling filters

I MPROVEMENT

M ARKETING

Industrial wastewater is responsible for the bulk of industrial odors.
Odorous compounds are formed in
water when byproducts of industrial
processes degrade in anaerobic conditions, which are then released into
the air. Aerators stir up water in treatment basins to increase the oxygen

D IALOGUE

[H3] Aeration

M F G TOMORROW

In controlled settings, ultraviolet radiation can be harnessed and focused
toward odorous compounds. The radiation creates ozone and other free
radicals that oxidize offending compounds. However, UV treatments
rarely exceed 80 percent odor reduction, and are used often where pollutant concentrations are low.

Centralized air is piped to the bottom
of a rectangular pit. The air is then
dispersed upward through a layer of
porous rocks or gravel. From there, it
travels further upward through a bed
of some type of organic media-it
could be grass clippings, peat moss,
leaves, tree bark or any number of
other organic materials. There, it encounters natural bacteria that feed
on the compounds polluting the air.
The result is cleaner air emitted into
the environment.
However, biofilters take up lots
of space and may not treat odors
or emissions as efficiently as other
methods. Their performance diminishes over time and the media must
be constantly replaced. This leads to
costly and inconvenient downtime,
during which odors go untreated.

S ALES PERFORMANCE
N EWS

K AYS ENGINEERING

[H3] Ultraviolet treatment

[H3] Biofilters

T OOLS

L EGAL

A LFAB INC.

S U P P LY C H A I N

B UY AMERICAN

Ozone is another term for O3, a very
unstable form of oxygen that acts as
an aggressive oxidizer. Odor control
via the use of ozone has shown to be
effective as an odor and emission control solution for low pollutant concentrations. However, while ozone is
readily available, it degrades to more
stable O2 atoms in microseconds in
uncontrolled settings. Its instability
requires careful and costly transport
and storage. In addition, ozone rarely
reduces more than 80 percent of the
odorous compounds in air. For many
applications, that's not good enough.

But the equipment needed to
recirculate water in bioscrubbers
adds to their up-front and operating
costs. It also means there are more
moving parts in the system, and
more moving parts means a greater
risk of a breakdown.


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Table of Contents for the Digital Edition of Manufacturing Today - Volume 18, Issue 2

Contents
Manufacturing Today - Volume 18, Issue 2 - Cover1
Manufacturing Today - Volume 18, Issue 2 - Cover2
Manufacturing Today - Volume 18, Issue 2 - 1
Manufacturing Today - Volume 18, Issue 2 - Contents
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