3.9 What are the advantages and disadvantages of a trickling filter system?
The following table outlines the advantages and disadvantages of a trickling filter system.
| Advantages | Disadvantages |
|---|---|
| Simple, reliable, biological process | Additional treatment (nitrates reduction, etc.) may be needed to meet more stringent discharge standards |
| Suitable in areas where large tracts of land are not available for land-intensive treatment systems | Possible accumulation of excess biomass that cannot retain an aerobic condition and can impair the trickling filter performance |
| Effective in treating high concentrations of organics depending on the type of medium used | Requires regular operator attention. Skilled personnel required |
| Appropriate for small- to medium-sized communities | The incidence of clogging is relatively high |
| Rapidly reduces soluble organic matter | Vector and odour problems (especially standard trickling filter) |
| Efficient nitrification units | High capital costs |
| Durable process elements | Constant source of electricity (for feeding pumps) and constant wastewater flow are required |
| Low power requirements (no requirement for air blower) | |
| Moderate level of skill and technical expertise needed to manage and operate the system |
Advantages and Disadvantages of a Trickling Filter System
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