tailieunhanh - Bio-methane potential test for anaerobic codigestion of faecal sludge and sewage sludge

Faecal sludge (FS) samples taken in Hanoi urban area had COD values ranging from g/L to g/L,TN values from g/L to g/L, and VS/TS ratio from % to %. Sewage sludge (SS) samples taken from sewage treatment plants in Hanoi had COD values ranging from g/L to g/L, TN from g/L to g/L, VS/TS ratio from % to %. Bio-methane potential (BMP) tests at mesophilic anaerobic condition (35 oC) provided results of methane production from FS, primary sewage sludge (PSS), waste activated sludge (WAS1 and WAS2) and mixture of primary and secondary sewage sludge at sludge thickener (WAS) as much as NmL/gVS, NmL/gVS, 294 NmL/gVS, NmL/gVS and NmL/gVS, respectively | Vietnam Journal of Science and Technology 55 (4C) (2017) 27-32 BIO-METHANE POTENTIAL TEST FOR ANAEROBIC CODIGESTION OF FAECAL SLUDGE AND SEWAGE SLUDGE Vu Thi Hoai An1,Vu Thi Minh Thanh2, Nguyen Viet Anh3, * 1 Division of Water Supply and Sewerage, College of Urban Works Construction (CUWC), Yen Thuong commune, Gia Lam district, Ha Noi 2 Division of Chemistry, National University of Civil Engineering (NUCE), 55 Giai phong road, Hai Ba Trung district, Ha Noi 3 Institute of Environmental and Science Engineering (IESE), NUCE, 55 Giai phong road, Hai Ba Trung district, Ha Noi * Email: anhnv@ Received: 20 June 2017; Accepted for publication: 19 October 2017 ABSTRACT Faecal sludge (FS) samples taken in Hanoi urban area had COD values ranging from g/L to g/L,TN values from g/L to g/L, and VS/TS ratio from % to %. Sewage sludge (SS) samples taken from sewage treatment plants in Hanoi had COD values ranging from g/L to g/L, TN from g/L to g/L, VS/TS ratio from % to %. Bio-methane potential (BMP) tests at mesophilic anaerobic condition (35 oC) provided results of methane production from FS, primary sewage sludge (PSS), waste activated sludge (WAS1 and WAS2) and mixture of primary and secondary sewage sludge at sludge thickener (WAS) as much as NmL/gVS, NmL/gVS, 294 NmL/gVS, NmL/gVS and NmL/gVS, respectively. Co-digestion of FS and WAS at different mixing ratios provided from NmL to NmL CH4 per gram of fed substrate VS. The values of methane yield have shown promising sludge-to-energy option with FS-SS co-digestion. FS-SS co-digestion in anaerobic digesters built at municipal sewage treatment plants which are often working under capacity provides chance to combat with FS and SS challenges, utilizing infrastructure facilities efficiently. Keywords: anaerobic digestion, bio-methane potential, fecal sludge, sewage sludge. 1. INTRODUCTION Sewage treatment plants .