Product
With growing population, industrialization and urbanization, the odour problem has been
assuming objectionable proportion. Urbanization without proper sanitation facilities is a
major cause of odour problem. Rapidly growing industrialization has aggravated the problem through odorous industrial operations.
♦ Undesirable odour contributes to air quality concerns and affect human lifestyles.
♦ Odour is undoubtedly the most complex of all the air pollution problems.
♦ Though foul odour may not cause direct damage to health, toxic stimulants of odour may cause ill health or respiratory symptoms. Secondary effects, in some, may be nausea, Insomnia and discomfort.
♦ Very strong odour can result in nasal irritation; trigger symptoms in individuals with breathing problems or asthma.
♦ On the economic front, loss of property value near odour causing operations/ industries and odorous environment is partly a consequence of offensive odour.
♦ Undesirable odour contributes to air quality concerns and affect human lifestyles.
♦ Odour is undoubtedly the most complex of all the air pollution problems.
♦ Though foul odour may not cause direct damage to health, toxic stimulants of odour may cause ill health or respiratory symptoms. Secondary effects, in some, may be nausea, Insomnia and discomfort.
♦ Very strong odour can result in nasal irritation; trigger symptoms in individuals with breathing problems or asthma.
♦ On the economic front, loss of property value near odour causing operations/ industries and odorous environment is partly a consequence of offensive odour.
Biofiltration
♦ This method is becoming an acceptable and successful way of reducing odours from
biological process.
♦ Bio-filters contain micro–organisms that break down VOC’s and oxidize inorganic gases and vapours into non–malodorous compounds such as mineral salt or acid, water and CO2.
♦ The bacteria grow on inert supports, allowing intimate contact between the odorous gases and the bacteria.
♦ The process is self-sustaining, cost effective for large volume diluted air stream.
♦ Low o & M cost.
♦ High odour removal efficiency > 99%
♦ Patented bio filter media
♦ Provide low pressure drop, moisture, nutrients and support to micro-organism.
♦ Having good mechanical strength, high porosity, long life, environment friendly material and provided buffer to neutralise acid product.
♦ Micro-organisms in bio filter
Bacteria- Thiobacillus, pseudomonas, actinomyceces globsporus, micrococcus albus, micromonospora vulgaris, proteus vulgaris, bacillus cerus, Streptomyces sp: fungi such as Pleurotus ostreatus, trametes versicolor, Bjerkandera adusta and Phanerochaete chrysosporium, pecillium, etc.
♦ Typical arrangements of bio-filters for odour control are shown in Figure
♦ Bio-filters contain micro–organisms that break down VOC’s and oxidize inorganic gases and vapours into non–malodorous compounds such as mineral salt or acid, water and CO2.
♦ The bacteria grow on inert supports, allowing intimate contact between the odorous gases and the bacteria.
♦ The process is self-sustaining, cost effective for large volume diluted air stream.
♦ Low o & M cost.
♦ High odour removal efficiency > 99%
♦ Patented bio filter media
♦ Provide low pressure drop, moisture, nutrients and support to micro-organism.
♦ Having good mechanical strength, high porosity, long life, environment friendly material and provided buffer to neutralise acid product.
♦ Micro-organisms in bio filter
Bacteria- Thiobacillus, pseudomonas, actinomyceces globsporus, micrococcus albus, micromonospora vulgaris, proteus vulgaris, bacillus cerus, Streptomyces sp: fungi such as Pleurotus ostreatus, trametes versicolor, Bjerkandera adusta and Phanerochaete chrysosporium, pecillium, etc.
♦ Typical arrangements of bio-filters for odour control are shown in Figure
| Sr.No | Industry | Odorous Material |
|---|---|---|
| 1 | Pulp & paper | Mercaptants, H2S |
| 2 | Tanneries | Hides, flesh |
| 3 | Petroleum | Sulphur compound from crude oil, Mercaptants |
| 4 | Chemicals | Ammonia, phenols,mercaptants, hydrogen sulphide, chlorine, organic products |
| 5 | Pharmaceutics | Biological extracts and wastes, spent fermentation liquors |
| 6 | Food processing | Dairy waste, meat products, fish , canning, food processing, confectionary |
| 7 | Municipal solid waste | Hydrogen sulphide |
| 8 | Waste water treatment | Hydrogen sulphide |
| 9 | Rubber | devulcalisation |