DOI: 10.1016/j.watres.2018.07.005
Scopus记录号: 2-s2.0-85052282639
论文题名: Chemical composition, nutrient-balancing and biological treatment of hand washing greywater
作者: Ziemba C. ; Larivé O. ; Reynaert E. ; Morgenroth E.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 144 起始页码: 752
结束页码: 762
语种: 英语
英文关键词: Biologically activated membrane bioreactor (BAMBi)
; Gravity-driven membrane (GDM)
; Handwashing
; Micro-nutrients
; Nitrogen
; Soap
Scopus关键词: Biochemical engineering
; Biological water treatment
; Bioreactors
; Cell growth
; Growth kinetics
; Nitrogen
; Nitrogen removal
; Nutrients
; Organic carbon
; Soaps (detergents)
; Washing
; Assimilable organic carbon
; Biological treatment
; Chemical compositions
; Decentralized treatments
; Dissolved organic carbon
; Handwashing
; Membrane bioreactor
; Planktonic bacteria
; Chemicals removal (water treatment)
; bacterium
; biofouling
; biological method
; bioreactor
; chemical composition
; dissolved organic carbon
; nitrogen
; pollutant removal
; trace element
; wastewater treatment
英文摘要: On-site biological hand washing water treatment can improve global access to safe hand washing water, but requires a thorough understanding of the chemical composition of the water to be treated, and an effective treatment strategy. This study first presents a detailed characterization of the individual inputs to hand washing water. We demonstrate (i) that soap is likely the most significant input in hand washing water, representing ∼90% of mass loading, and (ii) that inputs to hand washing water have low concentrations of biologically-essential macro- and micro-nutrients (nitrogen, phosphorus, potassium, copper, zinc, molybdenum and cobalt) with respect to carbon, which may impair biological carbon removal. This study next formulates a recipe that recreates a representative composition of hand washing water and develops a procedure to identify and supplement nutrients in which this recipe is estimated to be deficient. Batch testing of the nutrient-supplemented hand washing water with an inoculum of planktonic bacteria demonstrated improved assimilable organic carbon removal (99% vs. 86% removal) and produced lower final dissolved organic carbon concentrations (1.7 mgC/L vs. 3.5 mgC/L) compared to realistic (nutrient-deficient) washing water. Supplementing nutrients did promote cell growth (50x higher final total cell count). Full-scale testing in a biologically activated membrane bioreactor (BAMBi) system treating 75 L/day of nutrient-supplemented hand washing water showed that long-term operation (100 days) can deliver effective carbon removal (95%) without detrimental fouling or other disruptions caused by cell growth. This work demonstrates that biological treatment in a BAMBi system, operated with appropriate nutrient-balancing offers an effective solution for decentralized treatment of light greywater. © 2018 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112478
Appears in Collections: 气候减缓与适应
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作者单位: Eawag: Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, 8600, Switzerland; ETH Zürich, Institute of Environmental Engineering, Zürich, 8093, Switzerland; EPFL Lausanne, Environmental Chemistry Laboratory, Lausanne, 1015, Switzerland
Recommended Citation:
Ziemba C.,Larivé O.,Reynaert E.,et al. Chemical composition, nutrient-balancing and biological treatment of hand washing greywater[J]. Water Research,2018-01-01,144