| 1. | A biofilter has some similarities with a constructed wetland, but is usually without plants.
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| 2. | Stable environmental conditions and regular maintenance are required to ensure the biofilter is operating efficiently.
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| 3. | One of the main challenges to optimum biofilter operation is maintaining proper moisture throughout the system.
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| 4. | For large volumes of air, a biofilter may be the only cost-effective solution.
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| 5. | Fish require oxygen to metabolize food and grow, as do bacteria communities in the biofilter.
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| 6. | The first step of nitrification in the biofilter consumes alkalinity and lowers the pH of the system.
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| 7. | A septic tank and aerobic and biofilter units exist which represent scaled down versions of municipal sewage treatments.
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| 8. | A biofilter provides a substrate for the bacterial community, which results in thick biofilm growing within the filter.
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| 9. | Typically, a biofilter has two or three phases, depending on the feeding strategy ( percolating or submerged biofilter ):
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| 10. | Typically, a biofilter has two or three phases, depending on the feeding strategy ( percolating or submerged biofilter ):
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