Removal of COD from Piggery Wastewater Using a Lab-Scale UASB Reactor

Abstract:

It took 55 days to start up a lab-scale upflow anaerobic sludge blanket (UASB) reactor at ambient temperature 27-28 oC by using the synthetic wastewater, and piggery wastewater was used as the influent after the reactor start-up. From day 120 onwards, COD removal efficiency maintained in the range of 85% to 95% with 6.79-9.66 kg COD/ (m3•d) of volume loading, and the effluent COD concentration ranged between 400 mg/L and 600 mg/L. Granular sludge formation was observed in the reactor after 40-day operation, and the sludge diameter reached 2-4 mm in the 120 day-old reactor. The pH changes in the influent had little influence on COD removal from piggery wastewater using the UASB reactor.

• Periodical: Advanced Materials Research (Volume 534)
• Pages: 221-224
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.534.221
• Online since: June 2012
• Authors: Fei Yan, Jin Long Zuo, Tian Lei Qiu, Xu Ming Wang
• Keywords: Chemical Oxygen Demand (COD), Granular Sludge, Piggery Wastewater, UASB

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