The Bio-Oxygen Process removes Odours, Gases, Chemical Fumes
and Vapours in 5 -15 seconds.

Organic Odours from:


Sewage, grease traps, kitchen exhaust, garbage, toilets, fertilisers, farm animals, fermentation, spoilage, and rotting, etc.


Bio-Oxygen Odour Treatment Capacity


The Bio-Oxygen Process injects Oxygen clusters into sewerage pit, grease trap, kitchen exhaust, etc and as the polluted air and Oxygen cluster air mix, a chemical reaction takes place in the duct between the pollutants and the Oxygen clusters.


The Oxygen clusters react with the odours and chemical fumes in 5 – 15 seconds. The electron tubes are installed in the path of clean outside air and the polluted air does not come into the contact with the electron tubes so that the Bio-Oxygen electron tubes always stay clean.

The Bio-Oxygen Process is a positive process that works at the molecular level. carbon filters, scrubbers, and biomass filters are all negative processes because they only absorb the odours and don’t do anything to the odours themselves. With the Bio-Oxygen Process, up to 99% odour reduction may be targeted because as long as there is an excess of Oxygen Clusters, there can be no residual odours. Please ask Bio-Oxygen for a cost estimate to treat your particular odour emissions.


Bacteria, Fungus, Yeas, Mold, Mildew, Spore & Protozoa


Many if not most odours are produced by bacteria and other organisms. The Bio-Oxygen Process kills the organisms that cause odours such as bacteria, fungus, yeast, mould, mildew, spores, viruses, protozoa and other organisms.

The  Bio-Oxygen Process treats the cause (bacteria) as well as the effect (odours).


Carbon must be kept dry


The carbon must be kept dry because once the pores of the carbon are full of water, they cannot hold water and gases as well. The pores can either hold water or gas but they cannot hold both. For this reason, a dehumidifier is required for a carbon filter installation to keep the carbon dry. The dehumidifier must have the same capacity as the ventilation fan. Without a dehumidifier, a carbon filter would be virtually useless.


Exhaust Temperature


Gases expand and contract depending on temperature. Therefore, the capacity of the carbon to hold gases in the pores of the carbon depends on the temperature of the exhaust gases and the environmental temperature. As the temperature goes up, the trapped gases in the pores of the carbon expand and begin to get squeezed out of the pores.


Some of the odours and gases that are absorbed during the night are squeezed out again during the day. The higher the temperature of the exhaust gases, the lower the absorption capacity of the carbon filter will be. With carbon filters, the temperature of the exhaust gases should be kept

(a) constant and
(b) as low as possible, ideally below 30 C, however, in reality, this is not always possible.



Chemical Scrubber


In order to improve the efficiency of water scrubbers, chemicals such as magnesium hydroxide, sodium hydroxide, hydrogen peroxide and/or sodium Hypochlorite are added to the scrubbing water in order to enhance to the efficiency of scrubbers. The chemicals give off fumes and the chemical fumes then react with the odours and gases and remove some of the odours and therefore in a chemical scrubber, it is not the water that removes the odours but the chemical fumes.


Biomass Filter versus Bio-Oxygen


Biomass Filters are designed and constructed like a swimming pool and are very expensive to build. Biomass Filters can be as large or larger than an Olympic size swimming pool. Biomass filters are minimum 3 – 4 meters deep. About 50 cm high piers are erected on the bottom of the Biomass Filter. A rigid wire mesh is placed on top of the piers and then wood chips, peanut shells, coconut shells or similar organic material is spread on top of the rigid mesh until the pool is filled with biomass.


A layer of soil is then spread on top of the biomass. Water sprinklers are placed on top of the Biomass Filter and sprinkle water onto the Biomass Filter to keep the biomass moist so as to promote bacterial activity inside the biomass. On the bottom of the Biomass Filter is a drain hole which is connected to a pond to collect the water coming from the sprinklers. The exhaust air is blown into the hollow space under the wire mesh and the gases rise through the biomass to the surface. The average Biomass Filter is minimum 3 – 4 meters deep and if the air rises at only 1 m/s then the odours would be in contact with the biomass for only about 3 – 4 seconds.


Scrubbing Action


As the water trickles down through the biomass filter, some of the smelly particulates are washed down by the water trickling down through the biomass and finish up in a wastewater pond. The water trickling down merely transfers some of the odourous substances from the biomass filter to the pond and eventually the pond starts to smell and has to be treated, at extra cost.


Bacterial Activity


The gaseous odours pass through a Biomass Filter in 3 – 4 seconds and go largely untreated to the atmosphere because the bacteria in the biomass cannot digest the odours and gases in 3 – 4 seconds. Bacteria, at best, need hours or days, not seconds.


Required Land Area


A Biomass Filter occupies literally hundreds of square meters or square yards of land. To arrive at a true cost comparison with Bio-Oxygen, you have to add the value of the land to the cost of construction of a Biomass Filter. Each Bio-Oxygen Model 9000/10 replaces a Biomass filter of up to 100 square meters (120 square yards) and therefore, the value of the land should be added to the construction cost of the Biomass Filter.


The value of the land would already be more than the cost of the Bio-Oxygen equipment, let alone the cost of constructing a Biomass Filter on the land. A Bio-Oxygen unit only has a footprint of 0.30 sq. meter or 1 sq. foot.

Chemical Odours from:


Paints, varnishes, thinners, adhesives, glues, plastics, waxes, carpets, disinfectants, deodorants, and perfumes, etc. and from thousands of other chemicals, substances and material used and stored in buildings and factories.


Particulates, Aerosols, Steam, Oil & Wax


The Bio-Oxygen Process does not remove airborne particulates, aerosols, steam, oil, grease or wax because these pollutants should be removed with an Electrostatic Precipitator (EP). The combined concentration of particulates, aerosols, steam, oil, grease, and wax in the exhaust air should not exceed 10 ug/m3 (10 micrograms per cubic meter), collected on a 0.10-micron pore size test membrane.


The capacity and sizing of the Bio-Oxygen equipment are assessed:

-on the maximum likely concentration of odours, gases, and chemicals.

-Particulates, aerosols, oil & was contained in the exhaust gases.

-Temperature and humidity of the exhaust gases because all these factors are a load over and above the pollutants in the exhaust air.



Contact Time


As the odours, gases, and chemicals flow through the carbon bed, they make contact with the carbon and are absorbed into the pores of the carbon, so the theory goes. The minimum required contact time for the odours and gases to be absorbed into the carbon is 0.20 seconds, provided that the carbon is dry. If the pores of the carbon are already full of water then, of course, the carbon can’t hold odours and gases as well. However, the problem is that as the polluted air is blown through the carbon granule bed, the air follows the path of least resistance and therefore the polluted air tends to flow along with the gaps around the granules rather than through the pores of the carbon granules. For this reason, carbon granule filters only have relatively low efficiency.


Airborne Particulates block Pinholes


The pores of carbon are very easily blocked by airborne particulates and once a pore is blocked, it cannot absorb any more odours and gases. Gradually, as more and more of the pores are blocked, the odour absorption capacity of the carbon is accordingly impaired and it is only a question of time before most the pores are blocked and the odour absorption capacity of the carbon comes virtually to an end. The pores are usually blocked before the carbon has reached its maximum absorption capacity.


Scrubber versus Bio-Oxygen


A Water Scrubber consists of a large vessel and a high-pressure pump that produces a fog inside the vessel. The polluted air flows through the fog and the fog washes out particulates in the polluted air stream. Essentially, scrubbers are designed to wash out dust and particulates. However, some people try to remove odours and gases with a water scrubber but to no avail because water and gas do not mix and, for this reason, water scrubbers are ineffective for the removal of odours and gases.


Chemical Scrubbers expensive to operate


Chemical Scrubbers are very expensive to operate because they consume large amounts of chemicals and large amounts of water. In desert areas, the cost of the water may be equal to the cost of the chemicals. Sodium hydroxide (caustic soda) and sodium hypochlorite (chlorine) are highly corrosive and corrode the structure of the scrubber and therefore, chemical scrubbers only have a life of 10 – 15 years. A comparable Bio-Oxygen system would have a life expectancy of up to 30 years or longer (twice as long).


The operation of a chemical scrubber requires workers to operate the plant 24 hours per day whilst Bio-Oxygen works completely unattended 24/7. The chemicals are stored on site in tanks. A chemical scrubber and chemical tanks look like a small chemical plant and such an installation would be viewed by local residents and/or businesses with suspicion.


Furthermore, the residual slurry from a chemical scrubber is highly toxic and such a toxic slurry cannot be discharged into the sewer. The toxic slurry must be disposed of in a toxic waste dump at extra cost. Chemical scrubbers and chemical tanks pose a safety risk and have to be insured against leakage, vandalism, and disaster. Bio-Oxygen does not require water or chemicals, we only require clean ambient air and therefore there are no safety issues. Fresh Air is free.


Absorption & Filtering


Biomass Filters are always dripping wet and therefore the biomass cannot absorb any odours, gases or chemicals into the pores of the biomass because the pores of the biomass are already full of water. The exhaust gases contain smelly particulates. The only odour reduction that a Biomass Filter is able to achieve is restricted to the removal of smelly particulates contained in the exhaust air. The smelly particulates become trapped in the 3 – 4-meter deep biomass, however, as the smelly organic material accumulates and builds-up in the biomass, after a time, the Biomass Filter itself will start to give off more and more odours.


Water Consumption


Biomass Filters require a very large amount of water. In desert areas, there may not be enough water available to waste on a Biomass Filter and, in any event, the cost of the water in desert areas may be prohibitive. Bio-Oxygen does not require nor consume any water.




The temperature of the Biomass must be maintained at 30 C, summer or winter, snow,  rain or shine, same as the temperature of an incubator. If the temperature of the biomass goes above or below 30 C then the bacterial activity in the biomass will be accordingly impaired. If the temperature of the exhaust gases exceeds 55 C then at that temperature, the whole Biomass Filer would be pasteurised.


The pasteurisation temperature is 55 C and at that temperature, bacterial activity virtually ceases and the Biomass Filter would start to stink. Conversely, at 0 C the bacteria activity would virtually also cease. Therefore, the temperature (a) of the biomass in a Biomass Filter and (b) the temperature of the gases that pass through the Biomass Filter is critical for the proper functioning of a Biomass Filter and must both be maintained at a constant 30 C, summer or winter. However, in reality, this is not possible.