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Biosolids Enhancements to Increase Gas Production

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The city of Riverside, California is embarking on phase I expansion improvements for their Regional Water Quality Control Plant (RWQCP), expanding to an ultimate plant capacity of 52 mgd. To make the RWQCP as energy–independent as possible, the city is looking to maximize methane gas production in the anaerobic digesters. The city has identified three areas of improvement for solids processing including (1) construction of a permanent fats, oils and grease (FOG) unloading station to replace the temporary facility being operated since 2006; (2) improved digester design to maximize performance; and (3) incorporation of sludge disintegration processes to promote WAS destruction. This paper reviews the existing digester performance with FOG and these three areas of improvement in the phase I expansion.
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Keywords: Digestion; FOG; sludge disintegration

Document Type: Research Article

Publication date: 2011-01-01

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