• Air purification, prevents harmful gases. It absorbs gases such as H2S and CH4 which are harmful to the ozone layer.
• Does not pass pests, eliminates the cost of DRUG.
• Low cost.
• Includes ultra high saturation capacity activated carbon filter.
• The filter cartridges can be replaced. Easy to install.
• Long service life. Low maintenance costs.
• Prevents the entry of dust and foreign matter through manhole covers.
• Reduces sewer maintenance costs.

As a result of the activities of anaerobic bacteria in the manhole, gases such as H2S and CFL released accumulate in the chimney over time and cause pressure increase. As a result, a gas flow occurs through the manhole, where the
pressure is high, into the atmosphere where the pressure is lower. H2S, an acidic gas, causes both a very unpleasant odor and is very harmful to health.

If TASOTFİLT manhole filter is placed on the manhole, it continues without obstructing the gas from the manhole. However, the special active carbon components contained in the filter contain all of the disturbing H2S components
present in the exhaust gas. It is also retained by the filter component in a portion of the CFL component which is nonodorous but which may be hazardous to health.

The most important feature of activated carbon is its incredibly large surface area due to its very complex internal structure. This complex internal structure makes it possible for the activated carbon to retain other components.
The active carbon used in TASOTFİLT manhole chimney air treatment systems has a surface area of 1000 grams and a mass of 1 gr.

Objects larger than 20 microns cannot pass through the filter structure. In this way, the ways in which the insects living and breeding in the sewerage go out of the sewerage are prevented. This situation makes the pesticides to be
applied to the sewers more effective, but the higher efficiency is obtained from the spraying activities