Performance evaluation of the pilot scale upflow anaerobic sludge blanket - Downflow hanging sponge system for natural rubber processing wastewater treatment in South Vietnam.
A pilot-scale upflow anaerobic sludge blanket (UASB)-downflow hanging sponge system (DHS) combined with an anaerobic baffled reactor (ABR) and a settling tank (ST) was installed in a natural rubber processing factory in South Vietnam and its process performance was evaluated for 267days. The UASB reactor achieved a total removal efficiency of 55.6±16.6% for chemical oxygen demand (COD) and 77.8±10.3% for biochemical oxygen demand (BOD) with an organic loading rate of 1.7±0.6kg-COD·m-3·day-1. The final effluent of the proposed system had 140±64mg·L-1of total COD, 31±12mg·L-1of total BOD, and 58±24mg-N·L-1of total nitrogen. The system could significantly reduce 92% of greenhouse gas emissions and 80% of hydraulic retention times compared with current treatment systems.
Department of Civil and Environmental Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan; Department of Chemical Engineering, Hanoi University of Science and Technology, No.1 Dai Co Viet, Hai Ba Trung, Hanoi, Viet Nam; Environmental Engineering and Water Technology Department, UNESCO-IHE, PO Box 3015, 2601 DA Delft, The Netherlands.
Takahiro
T
Watari
Rubber Research Institute of Vietnam, Km42, Road 13, Ben Cat, Binh Duong 827211, Viet Nam.
Trung Cuong
TC
Mai
Department of Civil and Environmental Engineering, National Institute of Technology, Kure College, 2-2-11, Agaminami, Kure, Hiroshima 737-8506, Japan.
Daisuke
D
Tanikawa
Department of Science of Technology Innovation, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
Yuga
Y
Hirakata
Department of Civil and Environmental Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan; Top Runner Incubation Center for Academia-Industry Fusion, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
Masashi
M
Hatamoto
Center for Regional Environmental Research, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaragi 305-8506, Japan.
Kazuaki
K
Syutsubo
Department of Bioengineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
Masao
M
Fukuda
Rubber Research Institute of Vietnam, Km42, Road 13, Ben Cat, Binh Duong 827211, Viet Nam.
Ngoc Bich
NB
Nguyen
Department of Civil and Environmental Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan; Department of Science of Technology Innovation, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan. Electronic address: ecoya@vos.nagaokaut.ac.jp.
Takashi
T
Yamaguchi
D000693:Anaerobiosis; D019149:Bioreactors; D012408:Rubber; D012722:Sewage; D014744:Vietnam; D014865:Waste Disposal, Fluid; D062065:Wastewater
D012408:Rubber; D012722:Sewage; D062065:Wastewater
16S rRNA gene sequencing; Greenhouse gases emission; Natural rubber processing wastewater; UASB–DHS system