Nostocoida limicola Gram 1000X
Nostocoida limicola Lebendpräparat 100X
Nostocoida limicola Neisser 1000X
Nostocoida limicola Neisser 1000X
Nostocoida limicola
Rarely dominant – can cause bulking sludge and scum.
Morphology:
| Filament position: | within flake or free in aqueous phase |
| Branching: | none |
| Movement: | none |
| Growth habit: | curved / severely bent |
| Aufwuchs: | absent |
| Constrictions: | visible |
| Sheath: | none |
| Transverse walls: | clearly identifiable |
| Cell form: | disc-shaped to spherical |
| Length of filaments: | > 200 µm |
| Filament diameter: | 0.8 – 2.0 µm |
| Gram staining: | mostly positive blue, occasionally also negative in industrial wastewater |
| Neisser staining: | positive |
Factors promoting growth:
- sludge load (0.1 – 0.3 kg BSB5 / kg TS * d)
- untreated raw sewage without preliminary sedimentation
- easily degradable substrate
- high C/N ratio
Countermeasures:
- aerobic and anaerobic selectors with short retention time
- optimisation of fat separation
- addition of iron-aluminium compound products (e.g. FERRACLAR (III)) or polyaluminium chloride PAC (e.g. SACHTOKLAR 39)