Zibo XiangRun Environment Engineering Co., Ltd.Activated alumina spheres impregnated with potassium permanganate, capable of eliminating hydrogen sulphide, mercaptans, ethylene, formaldehyde, SOx, NOx, etc widely is used in odour control, corrosion control in industrial environments, elimination of ethylene in the control of fruit and vegetable ripening, air purification in white rooms, cleans rooms and work tables.
The implementation of small compact units with activated alumina is accompanied by innovative criteria for the confinement of odour sources. In this sense, it is important to emphasize that the odour control system used in a given area is not designed by calculating a certain number of air changes depending on the volume of the area, but rather by exclusively treating the source of the odour and enclosing this source insofar as possible to prevent odour dispersal throughout the rest of the plant/room.
In this way, the foul air captured is forced through the chemical adsorbents, which have the capacity to remove the gases that cause the odours with an efficiency of over 99.99%.
The dry odour control system with impregnated activated alumina has a number of advantages over traditional odour control systems in wastewater treatment, regardless of whether such traditional systems use activated carbon (normally impregnated with NaOH), bio-filters, or chemical gas scrubbers.
Traditional systems usually have large gas collection and duct infrastructures to take the gases to the centralised treatment system, which leads to high piping and pumping costs.
? Alumina adsorbents can be used for a wide range of inlet flows and concentrations of contaminating gases. Their performance is not affected by variations in these parameters, unlike chemical scrubber towers and bio-filters.
? The loss in capacity of the adsorbents is low and they are ## active from the moment air begins to pass through them.
? Their high efficiency ensures the absence of odours at the outlet of the unit (traditional bio-filters do not offer high efficiency and activated carbon is specifically suited to the treatment of hydrogen sulphide).
? Temperature and relative humidity variations can give rise to considerable agglomeration problems in the activated carbon bed, thereby notably increasing loss of capacity of the system and consequently reducing odour removal efficiency.
? It is possible to change or adjust the capacity and type of chemical adsorbent to tackle new or unexpected contaminants.
? It is possible to determine the degree to which the adsorbent has been consumed by means of chemical analysis, which facilitates monitoring and replacement. In the case of the adsorbent impregnated with potassium permanganate, it is also possible to estimate activity based on the color of the spheres.
? Very cost-effective for medium and low flows and/or concentrations.
? The odour control system using small independent units is very flexible. It requires very little maintenance and provides an individual solution for each odour source, while at the same time optimizing adsorbent performance.
