RUcore: Rutgers University Community Repository
Development of design basis for hydrodynamic vortex separators
Descriptive
TypeOfResource
Text
TitleInfo
(ID = T-1)
Title
Development of design basis for hydrodynamic vortex separators
Identifier
ETD_1436
Identifier
(type = hdl)
http://hdl.rutgers.edu/1782.2/rucore10001600001.ETD.000051044
Language
LanguageTerm
(authority = ISO639-2);
(type = code)
eng
Genre
(authority = marcgt)
theses
Subject
(ID = SBJ-1);
(authority = RUETD)
Topic
Civil and Environmental Engineering
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Hydraulic measurements
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Separators (Machines)
Subject
(ID = SBJ-1);
(authority = ETD-LCSH)
Topic
Water quality management--Equipment and supplies
Abstract
Though many prototypes of hydrodynamic separators have been developed to remove solids from wastewater and stormwater, to date, not much fundamental development on unit performance evaluation exists due to the complexity of the problem. Design specifications of commercial separators are derived from empirical or semi-empirical equations that are unique and proprietary to each manufacturer. In this research, experimental and theoretical investigations were conducted to examine the mechanisms of solid-liquid separation for a general vortex separator, thereby providing a fundamental approach for unit performance evaluation. The main achievements and findings obtained through the experimental investigation and theoretical study are as follows.
Experimental investigation with four physical vortex models, three with varying inlet pipe elevations and one with a lower chamber height, reveal that the impact of a changing inlet pipe elevation on particle removal efficiency is insignificant; while the effect of a changing chamber height on removal efficiency is significant and measurable.
In the theoretical development, three topics, namely, flow pattern, particle trajectory, and unit performance evaluation, were researched. Based on the Rankine combined vortex model, the law of conservation of momentum, and the boundary conditions for a confined vortex chamber, a simple formula for angular velocity was derived. By applying the Navier-Stokes governing equation coupled with the angular velocity derived in this study, a vortex flow pattern model was developed.
Based on the balance of forces acting on a particle, a new particle settling formula for natural sediment particles was proposed. Additionally, using the particle settling velocity and the flow pattern derived for the confined vortex chamber, the particle trajectory equations were derived in this study.
A new sizing equation for the confined vortex chamber was developed from the newly-derived particle trajectory. The new sizing equation was validated by laboratory measured particle removal efficiencies. The results generated from this dissertation research will help design, performance evaluation, as well as improvement of the hydrodynamic separators.
Experimental investigation with four physical vortex models, three with varying inlet pipe elevations and one with a lower chamber height, reveal that the impact of a changing inlet pipe elevation on particle removal efficiency is insignificant; while the effect of a changing chamber height on removal efficiency is significant and measurable.
In the theoretical development, three topics, namely, flow pattern, particle trajectory, and unit performance evaluation, were researched. Based on the Rankine combined vortex model, the law of conservation of momentum, and the boundary conditions for a confined vortex chamber, a simple formula for angular velocity was derived. By applying the Navier-Stokes governing equation coupled with the angular velocity derived in this study, a vortex flow pattern model was developed.
Based on the balance of forces acting on a particle, a new particle settling formula for natural sediment particles was proposed. Additionally, using the particle settling velocity and the flow pattern derived for the confined vortex chamber, the particle trajectory equations were derived in this study.
A new sizing equation for the confined vortex chamber was developed from the newly-derived particle trajectory. The new sizing equation was validated by laboratory measured particle removal efficiencies. The results generated from this dissertation research will help design, performance evaluation, as well as improvement of the hydrodynamic separators.
PhysicalDescription
Form
(authority = gmd)
electronic resource
Extent
xi, 205 p. : ill.
InternetMediaType
application/pdf
InternetMediaType
text/xml
Note
(type = degree)
Ph.D.
Note
(type = bibliography)
Includes bibliographical references (p. 194-203)
Note
(type = statement of responsibility)
by Yunjie Li
Name
(ID = NAME-1);
(type = personal)
NamePart
(type = family)
Li
NamePart
(type = given)
Yunjie
Role
RoleTerm
(authority = RULIB);
(type = )
author
DisplayForm
Yunjie Li
Name
(ID = NAME-2);
(type = personal)
NamePart
(type = family)
Guo
NamePart
(type = given)
Qizhong
Role
RoleTerm
(authority = RULIB);
(type = )
chair
Affiliation
Advisory Committee
DisplayForm
Qizhong Guo
Name
(ID = NAME-3);
(type = personal)
NamePart
(type = family)
Medlar
NamePart
(type = given)
Steven
Role
RoleTerm
(authority = RULIB);
(type = )
internal member
Affiliation
Advisory Committee
DisplayForm
Steven Medlar
Name
(ID = NAME-4);
(type = personal)
NamePart
(type = family)
Balaguru
NamePart
(type = given)
Perumalsamy
Role
RoleTerm
(authority = RULIB);
(type = )
internal member
Affiliation
Advisory Committee
DisplayForm
Perumalsamy N. Balaguru
Name
(ID = NAME-5);
(type = personal)
NamePart
(type = family)
Bagchi
NamePart
(type = given)
Prosenjit
Role
RoleTerm
(authority = RULIB);
(type = )
outside member
Affiliation
Advisory Committee
DisplayForm
Prosenjit Bagchi
Name
(ID = NAME-1);
(type = corporate)
NamePart
Rutgers University
Role
RoleTerm
(authority = RULIB);
(type = )
degree grantor
Name
(ID = NAME-2);
(type = corporate)
NamePart
Graduate School - New Brunswick
Role
RoleTerm
(authority = RULIB);
(type = )
school
OriginInfo
DateCreated
(point = );
(qualifier = exact)
2009
DateOther
(qualifier = exact);
(type = degree)
2009-01
Place
PlaceTerm
(type = code)
xx
RelatedItem
(type = host)
TitleInfo
Title
Rutgers University Electronic Theses and Dissertations
Identifier
(type = RULIB)
ETD
RelatedItem
(type = host)
TitleInfo
Title
Graduate School - New Brunswick Electronic Theses and Dissertations
Identifier
(type = local)
rucore19991600001
Location
PhysicalLocation
(authority = marcorg);
(displayLabel = Rutgers, The State University of New Jersey)
NjNbRU
Identifier
(type = doi)
doi:10.7282/T31C1X4J
Genre
(authority = ExL-Esploro)
ETD doctoral
Back to the top
Rights
RightsDeclaration
(AUTHORITY = GS);
(ID = rulibRdec0006)
The author owns the copyright to this work.
Copyright
Status
Copyright protected
Availability
Status
Open
RightsEvent
(AUTHORITY = rulib);
(ID = 1)
Type
Permission or license
Detail
Non-exclusive ETD license
AssociatedObject
(AUTHORITY = rulib);
(ID = 1)
Type
License
Name
Author Agreement License
Detail
I hereby grant to the Rutgers University Libraries and to my school the non-exclusive right to archive, reproduce and distribute my thesis or dissertation, in whole or in part, and/or my abstract, in whole or in part, in and from an electronic format, subject to the release date subsequently stipulated in this submittal form and approved by my school. I represent and stipulate that the thesis or dissertation and its abstract are my original work, that they do not infringe or violate any rights of others, and that I make these grants as the sole owner of the rights to my thesis or dissertation and its abstract. I represent that I have obtained written permissions, when necessary, from the owner(s) of each third party copyrighted matter to be included in my thesis or dissertation and will supply copies of such upon request by my school. I acknowledge that RU ETD and my school will not distribute my thesis or dissertation or its abstract if, in their reasonable judgment, they believe all such rights have not been secured. I acknowledge that I retain ownership rights to the copyright of my work. I also retain the right to use all or part of this thesis or dissertation in future works, such as articles or books.
Back to the top
Technical
ContentModel
ETD
MimeType
(TYPE = file)
application/pdf
MimeType
(TYPE = container)
application/x-tar
FileSize
(UNIT = bytes)
2355200
Checksum
(METHOD = SHA1)
27b074827b893e2b6981430db8282481e5775223
Back to the top
Statistical Profile