Difference between revisions of "Fecal coliforms"
From MohidWiki
m (1 revision) |
|
(No difference)
| |
Latest revision as of 10:27, 3 December 2008
A lot can be said about fecal coliforms. Basically they're a pollutant that is found in sewer discharges in large quantities.
Stats
- typical concentrations at a local discharge: 1e7 to 1e8 coli/100 mL
- typical discharge flow: 1 m3/s per 250,000 inhabitants. Guia de Cascais is 2 m3/s.
- typical decay time (decimation):
- Summer sunny day: 30 min
- Night: 24h
- Average: 2 h
- Clean bathing water treshold issued by the European Bathing Water Directive: 100 coli/100 mL
