Water purification, Water supply, Florida
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 Econ River and Lakes Pickett, Irma, Lee, and Florida. These samples have been examined for color intensity, based on tannic acid, alkalinity and pH. The color intensity varied from 3.25 to 35.5. The alkalinity varied from 2 to 26 ppm, whereas the pH's varied from 5.3 to 6.35. Aluminum sulfate and ferric sulfate were used to remove the color from the samples. Optimum conditions for color removal of dosages and ph's were made by jar tests. The optimum dosage of Fe₂(SO₄)3 • nH₂O and Al₂(SO₄)3 • 18H₂O varied from 33 to 55 mg/l, while the optimum pH's were found to vary from 6-10. Aluminum sulfate was found to be the better coagulant for removing color.
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Yousef, Yousef A.
Master of Science (M.S.)
College of Engineering
Environmental Systems Management
Length of Campus-only Access
Masters Thesis (Open Access)
Water -- Purification, Water supply -- Florida
Wanielista, Joseph R., "Removal of Color From Surface Water in Central Florida" (1973). Retrospective Theses and Dissertations. 80.
Contributor (Linked data)
Yousef, Yousef A. [VIAF]
Yousef, Yousef A. [LC]