Testing of Commercial Defoamant to Control Anaerobic Digester ...

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Surface Tension TestingFC Rel defoamant reduces frothing potential by reducing surface tension Lowering the surface tension helps dissipate gas bubbles which are stabilizedby filamentous growthDigested Sludgehas lower surfacetension than ASdue to thepresence ofbiosurfactants,produced inanaerobicdigestionFC Rel Defoamant
Toxicity Testing Methanogenic bacteria, key to stabilizing digestersludge, are very sensitive to inhibitory substances Ensure defoamant used is non-toxic to themethanogen population Two toxicity tests performed Anaerobic Toxicity Assay Microtox ® Toxicity Test
Page 5 and 6: Filamentous Microorganisms How do t
Page 7 and 8: Chemical DefoamantsDefoamants alter
Page 9: Surface Tension TestingThe ability
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 and 34: Defoamant Dose Test
Page 35 and 36: Conclusions and Recommendations Def

Testing of Commercial Defoamant to Control Anaerobic Digester ...

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