Show simple item record

dc.contributor.authorWalding, Clifford Don,1945-
dc.creatorWalding, Clifford Don,1945-en_US
dc.date.accessioned2011-11-28T14:00:36Z
dc.date.available2011-11-28T14:00:36Z
dc.date.issued1975en_US
dc.identifier.urihttp://hdl.handle.net/10150/191625
dc.description.abstractThe flocculation of raw municipal wastewater using ferric chloride and synthetic organic polyelectrolytes is affected by both chemical and physical process variables. The variables studied include flocculant types and dosages, suspended solids concentrations, sequence of chemical additions, time of mixing, and mixing intensities. Raw wastewater can be efficiently and economically flocculated with a combined chemical system of ferric chloride and a polyelectrolyte. When used following ferric chloride, anionic polymers were observed to perform better than cationic or nonionic types at equivalent dosages. The combined chemical system increases floc settling rates above those observed when no chemicals are used or when ferric chloride is used alone. Capital savings resulting from increased floc settling rates can offset a large portion of the chemical costs. A bench scale modified jar test was developed to provide greater sensitivity than conventional jar tests to initial floc settling rates.
dc.language.isoenen_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.subject.lcshHydrology.en_US
dc.subject.lcshSewage -- Purification -- Flocculation.en_US
dc.subject.lcshFlocculation.en_US
dc.titleFlocculation of wastewater with polyelectrolytes and ferric chlorideen_US
dc.typeThesis-Reproduction (electronic)en_US
dc.typetexten_US
dc.contributor.chairKasper, Dennis R.en_US
dc.identifier.oclc212907127en_US
thesis.degree.grantorUniversity of Arizonaen_US
thesis.degree.levelmastersen_US
thesis.degree.disciplineCivil Engineering and Engineering Mechanicsen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.nameM.S.en_US
dc.description.notehydrology collectionen_US
refterms.dateFOA2018-06-17T03:54:39Z
html.description.abstractThe flocculation of raw municipal wastewater using ferric chloride and synthetic organic polyelectrolytes is affected by both chemical and physical process variables. The variables studied include flocculant types and dosages, suspended solids concentrations, sequence of chemical additions, time of mixing, and mixing intensities. Raw wastewater can be efficiently and economically flocculated with a combined chemical system of ferric chloride and a polyelectrolyte. When used following ferric chloride, anionic polymers were observed to perform better than cationic or nonionic types at equivalent dosages. The combined chemical system increases floc settling rates above those observed when no chemicals are used or when ferric chloride is used alone. Capital savings resulting from increased floc settling rates can offset a large portion of the chemical costs. A bench scale modified jar test was developed to provide greater sensitivity than conventional jar tests to initial floc settling rates.


Files in this item

Thumbnail
Name:
azu_td_hy_e9791_1975_379_sip1_w.pdf
Size:
2.141Mb
Format:
PDF
Description:
azu_td_hy_e9791_1975_379_sip1_w.pdf

This item appears in the following Collection(s)

Show simple item record