Testing of Commercial Defoamant to Control Anaerobic Digester ...

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Results – Round 2 Results indicate that dose was not have beenhigh enough for sustained reduction of froth Initial dose of 15 mg/L was targeted Higher dose (> 20 mg/L) and more consistentdosing needed Recommendations Pre-test for dose optimization More frequent additions (daily)
Conclusions and Recommendations Defoamant is not toxic to anaerobic digestionprocess Defoamant is effective at reducing frothingpotential of digested sludge when applied at thecorrect dose Continuous addition of the defoamant, startingwhen frothing conditions are first noted, isrecommended to maximize the effectiveness ofthe defoamant addition A pre-test to confirm the dose required isrecommended prior to testing
Page 5 and 6: Filamentous Microorganisms How do t
Page 7 and 8: Chemical DefoamantsDefoamants alter
Page 9 and 10: Surface Tension TestingThe ability
Page 11 and 12: Toxicity Testing Methanogenic bacte
Page 13 and 14: ATA on FC Rel ® DefoamantFC Rel De
Page 15 and 16: Microtox Test on FC Rel DefoamantEC
Page 17 and 18: Frothing Potential TestsA visual in
Page 19 and 20: Defoamant TestingTest SetupDefoaman
Page 21 and 22: Dosing TestsFC Rel Defoamant Dosing
Page 23 and 24: Full-Scale Testing - Round 1 August
Page 25 and 26: Testing Setup
Page 27 and 28: Results - Round 1Prior to defoamant
Page 29 and 30: Full-Scale Testing - Round 2 Initia
Page 31 and 32: HP Full-Scale Defoamant Addition
Page 33: Defoamant Dose Test

Testing of Commercial Defoamant to Control Anaerobic Digester ...

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