Increasing CHP productivity while reducing biosolids volume and climate changing gasses

York, Richard V.; Magner, Joe; Chung, Greg

doi:10.2175/193864708790893675

Cited by 4 publications

(2 citation statements)

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“…At the highest food waste addition, 65%-food waste, the cake solids was around 16.6%, still higher than the control, but less than the 45%-food waste sample. These results are consistent with the full-scale results reported by York and Magner (2009) who found addition of co-waste increased cake solids.…”

Section: Resultssupporting

confidence: 93%

“…To our knowledge, only one study examined the effect of codigestion on dewaterability in terms of cake solids from a fullscale belt filter press and the mass balance of solids from the plant (York and Magner, 2009). In this study, a relatively small, full-scale treatment plant (6800 m 3 /d or 1.8 million gpd) began co-digestion of inedible kitchen grease comprising FOG at a volumetric rate of 11.4 m 3 /d (3000 gal/d) to two digesters already receiving 75.7 m 3 /d (20,000 gpd) of wastewater solids at a concentration 3.5% total solids.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Food Waste Co‐Digestion on Digestion, Dewatering, and Cake Quality

Higgins

Rajagopalan²,

Miller

et al. 2017

Water Environment Research

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The objective of this study was to evaluate the effect of food waste addition on anaerobic digestion performance as well as downstream parameters including dewatering, cake quality, and filtrate quality. Laboratory-scale digesters were fed processed food waste at rates of 25%, 45%, and 65% increased chemical oxygen demand (COD) loading rates compared to a control fed only primary and secondary solids. The specific methane yield increased from 370 L CH4/kg VSadded for the control to 410, 440, and 470 L CH4/kg VSadded for the 25, 45, and 65% food waste addition, respectively. The cake solids after dewatering were all higher for the food waste digesters compared to the control, with the highest cake solids being measured for the 45% food-waste loading. Compared to the control digester, the biosolids odorant concentration increased for the lowest dose of food waste. Odorant concentrations were below detection for the highest food waste loading.

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%