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Solutions to Mitigate Effects of Microthrix parvicella at the ... - pncwa

Solutions to Mitigate Effects of Microthrix parvicella at the ... - pncwa

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Wh<strong>at</strong> is <strong>Microthrix</strong> Parvicella (MP)?<br />

-Bête noir <strong>of</strong> filaments<br />

• Gram positive, un-branched filament<br />

• Surveys in many countries show MP<br />

domin<strong>at</strong>es bulking sludges and foams<br />

• Favored by:<br />

• Long SRTs (BNR Plants)<br />

• Altern<strong>at</strong>ing aer<strong>at</strong>ed/ non-aer<strong>at</strong>ed<br />

zones (BNR plants)<br />

• Foam trapping environments<br />

• Low T (Winter/Spring)<br />

• Long Chain F<strong>at</strong>ty Acids (LCFA) food<br />

source (FOG)<br />

Gram Stain - x1000<br />

MP foam

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