Table 3.
Microbiological quality of various sludges before and following treatment at the Killarney ATAD plant in relation to fecal and total coliform counts.
| Sample point | Fecal coliforms1(McConkey agar) | Total Coliforms (McConkey agar) | Fecal Coliforms (EMBA agar) | Total Coliforms (EMBA agar) |
|---|---|---|---|---|
| Primary Sludge | 3.6 × 105 | 6.1 × 107 | 2.1 × 104 | 8 × 106 |
| Secondary Sludge | 5.1 × 103 | 7.1 × 10 5 | 2 × 103 | 3.5 × 104 |
| ATAD Product | <1 | <1 | <1 | <1 |
1
The results presented are the average of 20 determinations. In all cases indicator organisms were not detectable in the ATAD product either on MacConkey and EMB selective agars. Data presented are cfu g−1 of dry sludge.