DOI: 10.1016/j.watres.2017.11.035
Scopus记录号: 2-s2.0-85034832688
论文题名: A membrane bioreactor with iron dosing and acidogenic co-fermentation for enhanced phosphorus removal and recovery in wastewater treatment
作者: Li R.-H. ; Wang X.-M. ; Li X.-Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 129 起始页码: 402
结束页码: 412
语种: 英语
英文关键词: Acidogenesis
; Chemical phosphorus removal
; Dissimilatory iron reduction
; Membrane bioreactor
; Phosphorus recovery
; Vivianite
Scopus关键词: Bioconversion
; Bioreactors
; Ceramic membranes
; Chemicals removal (water treatment)
; Chlorine compounds
; Fermentation
; Metal recovery
; Phosphate minerals
; Precipitation (chemical)
; Solubility
; Wastewater treatment
; Acidogenesis
; Chemical phosphorus removal
; Dissimilatory iron reduction
; Membrane bioreactor
; Phosphorus recovery
; Vivianite
; Iron compounds
; ferric ion
; ferric oxide
; ferrous ion
; iron
; phosphorus
; ferrous phosphate
; iron
; phosphate
; phosphorus
; activated sludge
; bioreactor
; biotransformation
; chemical process
; extraction method
; fermentation
; fertilizer
; food waste
; iron
; membrane
; phosphorus
; precipitation (chemistry)
; recovery
; reduction
; sludge
; vivianite
; wastewater treatment
; acidification
; activated sludge
; anaerobic fermentation
; Article
; batch fermentation
; ceramics
; chemical oxygen demand
; comparative study
; controlled study
; dissolution
; energy dispersive X ray spectroscopy
; fermentation
; food waste
; hydrolysis
; methanogenesis
; microbial growth
; nonhuman
; oxidation reduction potential
; precipitation
; priority journal
; rice
; sedimentation
; sludge digestion
; solubility
; supernatant
; waste component removal
; waste water management
; X ray powder diffraction
; artificial membrane
; bioreactor
; chemistry
; fermentation
; food
; metabolism
; procedures
; sewage
; water pollutant
; Bioreactors
; Fermentation
; Ferrous Compounds
; Food
; Iron
; Membranes, Artificial
; Phosphates
; Phosphorus
; Sewage
; Waste Disposal, Fluid
; Water Pollutants, Chemical
英文摘要: A novel phosphorous (P) removal and recovery process using a membrane bioreactor (MBR) with ferric iron dosing and acidogenic co-fermentation was developed for municipal wastewater treatment. The very different solubility of Fe(III)-P and Fe(II)-P complex and the microbial transformation of Fe(III) to Fe(II) were utilized for P removal and recovery. By means of Fe-induced precipitation, chemical P removal was effectively achieved by an MBR with a flat-plate ceramic membrane; however, the Fe(III)-P solids accumulated in the MBR that constituted a significant fraction of the activated sludge. Anaerobic co-fermentation of the MBR sludge and food waste in a side-stream allowed the extraction of P and Fe from the sludge into the supernatant. The P in the supernatant was recovered as a fertilizer resource, while the sludge was returned to the MBR tank. The experimental results show that by adding FeCl3 at 20 mg Fe/L into the influent of domestic wastewater, about 95.6% of total P could be removed by the MBR. One fifth (20%) of the sludge in the MBR was circulated daily through the side-stream fermenters for co-fermentation with cooked rice as the model food waste. The sludge underwent acidogenesis and dissimilatory iron reduction, resulting in a drop of the pH to below 5.0 and reduction of Fe(III) to Fe(II). Owing to the high solubility of the Fe(II)-P complex, P and Fe were then dissolved and released from the sludge into the supernatant. By simply adjusting the solution pH to 8.0, the P and Fe(II) in the supernatant readily re-precipitated to form vivianite for the P recovery. Using the iron dosing MBR and side-stream sludge fermentation, an overall P recovery efficiency of 62.1% from wastewater influent can be achieved, and the problem of inorganic build-up in the MBR is effectively alleviated. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113102
Appears in Collections: 气候减缓与适应
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作者单位: Environmental Engineering Research Centre, Department of Civil Engineering, The University of Hong Kong, Pokfulam, Hong Kong, Hong Kong; School of Environment, Tsinghua University, Beijing, 100084, China
Recommended Citation:
Li R.-H.,Wang X.-M.,Li X.-Y.. A membrane bioreactor with iron dosing and acidogenic co-fermentation for enhanced phosphorus removal and recovery in wastewater treatment[J]. Water Research,2018-01-01,129