DOI: 10.1016/j.watres.2017.10.040
Scopus记录号: 2-s2.0-85032348634
论文题名: Consequences of pH change on wastewater depth filtration using a multimedia filter
作者: Ncube P. ; Pidou M. ; Stephenson T. ; Jefferson B. ; Jarvis P.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 128 起始页码: 111
结束页码: 119
语种: 英语
英文关键词: Aggregation
; Deposition
; Depth filtration
; Multimedia
; Surface charge
; Zeta potential
Scopus关键词: Agglomeration
; Bandpass filters
; Biological water treatment
; Deposition
; Effluents
; Particles (particulate matter)
; Surface charge
; Suspensions (fluids)
; Wastewater treatment
; Zeta potential
; Biological instability
; Depth filtration
; Granular media filtration
; Inorganic components
; Multimedia
; Wastewater characteristics
; Wastewater filtration
; Wastewater treatment process
; Filtration
; aluminum oxide
; magnetite
; aggregation
; effluent
; electric field
; filter
; filtration
; granular medium
; pH
; pollutant removal
; suspended load
; wastewater
; wastewater treatment
; Article
; biochemical oxygen demand
; chemical oxygen demand
; depth filtration
; effluent
; filtration
; isoelectric point
; laser diffraction
; particle size
; pH
; physical chemistry
; precipitation
; priority journal
; retention time
; surface charge
; surface property
; suspended particulate matter
; turbidity
; waste component removal
; waste water management
; zeta potential
; chemistry
; filtration
; pH
; procedures
; sewage
; suspension
; waste water
; Filtration
; Hydrogen-Ion Concentration
; Surface Properties
; Suspensions
; Waste Disposal, Fluid
; Waste Water
英文摘要: Different media materials in a multimedia filter have the potential to trap particles of different characteristics dependent on the media-suspension particle interactions. However, the removal of particles from wastewater secondary effluent using granular media filtration is relatively poorly understood because of the complexity of the wastewater matrix. Often the wastewater treatment process is liable to undergo pH changes due to removal or addition of chemicals in the treatment chain or from biological instability which in turn may alter the wastewater characteristics. Wastewater contains a mixture of organic and inorganic components, dissolved or particulate which may influence the aggregation and deposition of suspension solids during depth filtration. Changes in wastewater pH has the potential to change the wastewater matrix and media surface properties hence affecting aggregation and deposition in wastewater filtration. This study investigated how pH change affects wastewater filtration by monitoring zeta potential, aggregation and deposition of solids. The wastewater and filter media were also characterised over a range of pH from 1 to 13. Aggregation and deposition of wastewater solids was found to be most efficient near neutral pH. This was not concurrent with the conditions of lowest net charge in the system. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113131
Appears in Collections: 气候减缓与适应
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作者单位: Cranfield Water Science Institute, Cranfield University, College Road, Cranfield, Bedfordshire MK43 0TE, United Kingdom
Recommended Citation:
Ncube P.,Pidou M.,Stephenson T.,et al. Consequences of pH change on wastewater depth filtration using a multimedia filter[J]. Water Research,2018-01-01,128