… with tried and tested solutions from Fritzmeier Umwelttechnik. For larger businesses, the company has a particularly powerful hybrid system with the stationary exhaust air filter Coalsi-Volumenmax in its range, and for air purification in smaller companies, the corre- sponding technology is also available as a passive pipe filter.
Nasty odours from production and sewage plants not only burden employees, residents and nature, but also quickly activate environmental authorities. Fritzmeier Umwelttechnik in Groß-helfendorf/Germany counteracts this with an easily retrofitted hybrid system that filters the process and waste water odours. Its stationary air filter Coalsi-Volumenmax comes with the latest technology, manages up to 2,820 m³/h and mea-sures only 131 cm x 131 cm at a standing height of 376 cm. A power connection is sufficient.
The system combines physical, chemical and biological components to form an efficient cleaning unit. It automatically sucks in unpleasant smelling atmospheres and channels them through a special filter cascade.
Hybrid mat modules are located inside. Each module filters in a physical, chemical and biological way. The highlight are “odour-eating” organisms. They metabolize typical odour-producing substances such as hydrogen sulphide and ammonia. In the physical part, the substances are retained solely by the mechanical action of the material. A powerful activated carbon adsorber with an inflow surface of about 8 m² is responsible for the chemical filtration. The porous, fine-pored carbon has a catalytic effect and neutralizes many odour components.
The escaping clean gas is odourless. Up to 99 % odour retention is possible, says Fritzmeier. The company is the only supplier of such triple hybrid systems.
The power consumption is moderate at 0.71 kW/h, even at full fan capacity. A self-regulating heater switches on at low temperatures. The freely placeable system can be run on demand or in continuous operation. At less than 50 dB(A) it is about as quiet as a refrigerator.
If such powerful, active systems with control electronics are not required: for air pollution control in smaller companies this filter technology is also available as passive tubular filters. They are used in the through or end section of the ventilation pipe. An electrical connection is not required. A blower can be connected upstream, if necessary.
If the filtering capacity of a single module is not sufficient, several of these Coalsi multi-chamber filters can be connected in series – until the last odour molecule is neutralized. Parallel operation in a branch is also possible. The gas throughput is hardly impaired at all as the filters are fully flown through, emphasizes Fritzmeier.
The technology has its origins in the municipal sector, where it has proven itself in street channel filters. The service life of the filter mats, which are always replaceable in all systems, is about one year, depending on the admission and volume flow. Replacement is carried out quickly and cost-effectively by the user or the manufacturer’s service department. The material is not pathogenic to humans, plants or animals, and is therefore harmless to health.
