| 摘要 |
<p>A clarifier filtration unit comprising a reed section and a filter section comprising loose filter media preferably shingle or plastic. Preferably the clarifier filtration unit contains reeds within a centre section of the filtration unit and three outer sections of the filtration unit contain shingle and plastic media. Preferably, in use water is directed from a treatment works into the centre of the reed section, passes through a shingle medium, support grid and plastic medium before entering an effluent chamber from where it is discharged. Preferably the reed section allows settlement to take place and lowers ammonia levels. The reed section and filter section may be formed as inner and outer sections and may be provided with covers.</p> |
