Treatment of Winery Wastewater In A Reactive PU‐Immobilized Anaerobic Fluidized Bed Reactor

This is the authors' abstract. We don't add key points for this paper.

Immobilization of methanogens through direct reactive polymerization of TDI (tolylene diisocyanate) and PPG (polypropylene glycol) was shown to be successful. Rapid and early startup occurred within 48 hours of immobilization, with methane production rate 12.6 L/L‐day. In treating synthetic wastewater (SW), maximum percent sugar and COD eliminations at influent sugar loadings 4 g/L and 2 g/L were found to be 98.5% and 91.3 % respectively at hydraulic retention time (HRT) of 250 min. Whereas in treating winery wastewater (WW) at the same HRT, the treatment efficiency for sugar; protein; and COD was 94.1%; 90.3%; and 84.25%, respectively. While the methane production rate reached 8.75 L/L‐day. The features of direct reactive polyurethane(PU) ‐immobilization can be considered to be feasible as a new process innovation.