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Cooperation with Hartmann food technology

The quality standards in Russia are gradually reaching European levels. Hartmann food technology from Nienburg has years of experience in the Russian market. As a general contractor in Russia Hartmann has always focused on quality and selected its products accordingly...

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Under Floor Exhaust Extraction - Myths and Facts

Under Floor Exhaust Extraction - Myths and Facts

Again and again we experience that, in technical discussions with colleagues and other industry insiders, utterly false or misleading statements regarding the function and effect of a under floor exhaust extraction are made...

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Leaky stable doors

Leaky stable doors

Unfortunately we always come across leaky section doors when we do our checks in the stables.

So we would like to point out once more...

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Energy Costs in Pig Farming

Energy Costs in Pig Farming

The ever rising energy prices are causing several managers to "screen" their businesses:

where is my operation? are my energy costs too high? or is everything OK?

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New perforated Panels

New perforated Panels

The further development of the well-known hard foam supply air perforated panel led to the innovation of a new perforated panel which is made ​​of EPS foam with NANO technology

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Englisch > Products > Special Components > Exhaust Air Cleaning

Exhaust Air Cleaning

Abluftreinigung

Exhaust Air Cleaning

Although we want to prevent this from becoming the standard, we have addressed this subject. Here to, everything starts with the planning. The exhaust cleaning must be optimally adapted to the ventilation
system. Pressure lass must be kept to a minimum. Energy consumption determines how economic the system is
.

In this process, the exhaust air is passed through an area (see drawing), in which there is special packing made of plastic parts, over which the washing water is distributed evenly by a special circulation pump (low energy and a lot of water). Below the packing, the wash water is collected in a basin (concrete / stainless steel depending on the construction). Lost water is replaced automatically.

Schema Abluftreinigung
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Schema Querschnitt Biofilter
>> to large screen view (PDF)

 

The ventilators are switched in groups, a prewash with fresh water is arranged behind each. Through constant circulation of the water, bacteria form in the wash water and on the packing, which is designed to greatly reduce odours.

Essential conditions for planning such a system are the corresponding cross sections in the exhaust duct area and the calculation of pressure drop in the packing. At regular intervals (depending on the amount of water - longer or shorter) part of the packing should be cleaned in order prevent an increase in pressure loss. The packing may not be completely cleaned, part of the bacteria strain must be retained.

AbluftreinigungThis system adds some features to that of a bio-washer: - The base material exhibits good adhesion to microorganisms. - The trickle
density of the bulk material is less than 20m ³ / m², to prevent washing out of the microorganisms
.

In individual cases, even a spray wash can be used. Then, with a smaller amount of water and packing, only the dust (and therefore significant amounts of bound odours) is washed out. It all depends on the requirements of the Building Authority. With a spray wash wind-dependent regulation of the system is feasible (e.g. switching when the wind direction is toward a housing area or undeveloped land).

To wash out a significant amount of ammonia, sulfuric acid must be used during the pre-wash. These steps should be avoided if possible because of the extra work and risk of much greater technical complexity.