Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 14 of 14
Full-Text Articles in Engineering
Evaluation Of An On-Line Device To Monitor Scale Formation In A Brackish Water Reverse Osmosis Membrane Process, Jennifer C. Roque
Evaluation Of An On-Line Device To Monitor Scale Formation In A Brackish Water Reverse Osmosis Membrane Process, Jennifer C. Roque
Electronic Theses and Dissertations
A modified two-element membrane pressure vessel assembly has been used to monitor process operational changes in a full-scale reverse osmosis (RO) water treatment plant (WTP). This study evaluated the effectiveness of the assembly as an on-line monitoring device intended to detect scale formation conditions when connected to an operating RO process train. This study was implemented to support the requirements of a larger University of Central Florida (UCF) research project ongoing at the city of Sarasota’s Public Works and Utilities (City) water treatment facilities located in Sarasota, Florida. During the time-frame of this study, the City was in the process …
An Investigation Of Fabric Filtration For The Removal Of Colloidal Turbidity From A Laboratory Water, David Brent Jansen
An Investigation Of Fabric Filtration For The Removal Of Colloidal Turbidity From A Laboratory Water, David Brent Jansen
Retrospective Theses and Dissertations
A kaolin in tapwater suspension was treated either with alum or one of two cationic polymers. The resulting suspension was filtered through various configurations of felt cloth filters. The kaolin suspension was adjusted to 100 JTU. Treatment by polymer consistently lowered the filtered effluent to less than 1 JTU. Jar tests were utilized to determine optimum coagulant dose for the tests. The formulation of a complete filter cake in the filter appeared to be the determining factor in the efficiency of water clarification by the filter. The literature lacked references to this concept as applied to water supply problems. The …
Nominal Molecular Weight Distributions Of Color, Toc, Tthm, Precursors And Acid Strength In A Highly Organic Potable Water Source, Jalil Fouroozi
Nominal Molecular Weight Distributions Of Color, Toc, Tthm, Precursors And Acid Strength In A Highly Organic Potable Water Source, Jalil Fouroozi
Retrospective Theses and Dissertations
This research investigated the relationships between molecular size and the TOC, TTHM, acid strength and color concentrations present in raw and coagulated water from Lake Washington. Three separate coagulants were utilized for investigation. There were: Al, Fe and Mg. Results indicated that the majority of the TOC, color and TTHM precursors were in the colloidal size range and removed by coagulation. The remaining TTHM precursors are mostly molecular and require a process other than coagulation for removal from the potable water before environmental standards are met.
The Effect Of Ozone On Trihalomethane Precursors In Raw And Magnesium Treated Lake Washington Water, James Kent Kimes
The Effect Of Ozone On Trihalomethane Precursors In Raw And Magnesium Treated Lake Washington Water, James Kent Kimes
Retrospective Theses and Dissertations
A bench scale laboratory ozonator was constructed and determined to produce 27 mg O3/hr. A contacting system and experimental procedure was developed to approximate a mass balance of 0, 1, 2, 4, 8 and 16 ppm were applied to raw and magnesium treated water from Lake Washington which is the potable water source for Melbourne, Florida. The effect of ozone on trihalomethane precursors was studied by comparing THM formation at 1, 24, 48, 72, and 96 hours following chlorination. The concentrations of each specie, chloroform, bromodichloromethane, dibromochlormethane and bromoform are reported. The highest 96 hour TTHM concentrations reported were 2773 …
Wastewater Pretreatment System For A Printed Circuit Board Plant, Raymond F. Green
Wastewater Pretreatment System For A Printed Circuit Board Plant, Raymond F. Green
Retrospective Theses and Dissertations
The wastewater from the electroplating processes required for the production of printed circuit boards has a high heavy metal content. The regulatory agencies of both the Federal Government and the State of Florida set pretreatment limitations on the quantity of the hazardous heavy metal ions that may be discharged t o a receiving body of water or to a Publicly Owned Treatment Works. A number of treatment processes are available for the effective removal of these pollutants. The mechanism behind the more common processes are discussed in this paper. Many variables must be considered in the design of a wastewater …
Removal Of Hydrogen Sulfide From Ground Water In Central Florida, Thomas G. Lochrane
Removal Of Hydrogen Sulfide From Ground Water In Central Florida, Thomas G. Lochrane
Retrospective Theses and Dissertations
The presence of hydrogen sulfide in a ground water source is noted by its rather obnoxious odor, similar to a "rotten egg". Concentrations as low as 0.05 ppm are noticeable, therefore, almost its entire removal is demanded prior to potable consumption. Hydrogen sulfide is formed primarily by the decomposition of organic matter in anaerobic conditions. Removal of this gas has been accomplished by means of aeration, detention, and chlorination over the years. The mechanisms behind each of these processes are complex and discussed in this paper. During the course of this investigation, a literature survey concerning the mature and sources …
Carbon Removal Of Organohalides In Drinking Water, William Ray Mccurley
Carbon Removal Of Organohalides In Drinking Water, William Ray Mccurley
Retrospective Theses and Dissertations
Drinking water samples provided by Orlando Utilities from various locations and from Florida Technological University were analyzed for organohalides. Compounds tentatively identified were 0.0024 mg/l DDT, 0.003 mg/l phosdrin, 0.00036 mg/l BHC, and 0.000095 mg/l endosulfan. These concentrations are well below recommended limits for drinking water. Two water samples were mixed with 10 mg/l of 20-40 mesh granular activated carbon, agitated for 2 minutes and then allowed to settle in the flask for 45 minutes. A reduction in the organohalide concentration varied from 25 to 98 percent of the original concentration. Also, a solution of seven common pesticides of 0.1 …
Individual Residential Wastewater Treatment, Robert H. Mcneal
Individual Residential Wastewater Treatment, Robert H. Mcneal
Retrospective Theses and Dissertations
No abstract provided.
Nitrogen Transformation In Secondary Wastewater Treatment Plants, Mark Lee Morris
Nitrogen Transformation In Secondary Wastewater Treatment Plants, Mark Lee Morris
Retrospective Theses and Dissertations
Nitrogen is an essential nutrient for plant and animal life; however, its presence in concentrations exceeding assimilative capacities of receiving water bodies is undesirable. Therefore, the form and concentration of total nitrogen released in wastewater effluents is of great concern. During the course of this study, the nitrogen analysis was performed on the various unit processes of the Florida Technological University wastewater treatment plant. The average percent removal of nitrogen between plant influent and clarifier effluent was 30.5% during the month of August 1975. It is believed that the nitrogen removal is attributed to luxury uptake by the biomass through …
Electromagnetic Fields In Water Treatment, Robert H. Fagan
Electromagnetic Fields In Water Treatment, Robert H. Fagan
Retrospective Theses and Dissertations
Properties and characteristics of colloidal systems are reviewed with a discussion of colloid systems to be found in natural and wastewaters. Current electric and magnetic field theory are reviewed and summarized to provide practical application of the theory to engineering problems in the environmental field. Literature of colloidal reactions to electrical and magnetic fields is discussed and reviewed to ascertain areas of potential application of electric and magnetic phenomena to natural and wastewater treatment systems having objectionable colloid suspensions. It is concluded that application of electrical fields (electrophoresis) does not currently hold much promise for practical applications in water treatment …
Removal Of Color From Surface Water In Central Florida, Joseph R. Wanielista
Removal Of Color From Surface Water In Central Florida, Joseph R. Wanielista
Retrospective Theses and Dissertations
The USPHS limits color in water to 15 color units. However, it is desirable to remove all the color. Color in surface water is mainly due to humic substances and was found in concentrations varying up to 450 color units. Removal of color by coagulation and flocculation has been practiced over the years. The mechanisms involved have not yet been fully understood. During the course of this investigation, a literature survey, studying the nature of color, mechanisms or color removal, and optimum color removal conditions, has been conducted. Samples have been obtained from surface waters in Central Florida; namely Big …
The State-Of-The-Art Of The Coagulation/ Flocculation Process, David William Bouck
The State-Of-The-Art Of The Coagulation/ Flocculation Process, David William Bouck
Retrospective Theses and Dissertations
This report has been prepared with the idea of briefly summarizing the most important principles underlying the coagulations/flocculation process as it applies to water and wastewater treatment. The production of potable water from a supply which has been contaminated by naturally-occurring or man-made pollutants has been an object of concern throughout history. Several broad aspects have been considered in the report, such as the history, the nature and physical chemistry of colloidal particles, the theories of and the factors affecting coagulation/flocculation, and control of the coagulation/flocculation process. It is advisable for those persons engaged in the dynamic environmental sciences to …
Rapid Mixing In Water And Wastewater Treatment, Randall C. Rector
Rapid Mixing In Water And Wastewater Treatment, Randall C. Rector
Retrospective Theses and Dissertations
No abstract provided.
The Restoration Of Lake Waters, Charles James Boyter
The Restoration Of Lake Waters, Charles James Boyter
Retrospective Theses and Dissertations
Lake restoration procedures are reviewed with the objective of making recommendations toward future lake restorations for central Florida lakes. The progress of drawdown for restoration is examined. A total phosphorus model is developed for Lake Eola to predict the success of the drawdown. No one restoration procedure should be applied to every lake in central Florida. Each situation must be studied separately. It appears that lake drawdown was the best technique to use for Lake Eola. However, the stormwater inputs and free-flowing drains must be purified to insure the success of the drawdown or the Lake will return within the …