scholarly journals Impact of hurricanes on the flux of rainwater and Cape Fear River water dissolved organic carbon to Long Bay, southeastern United States

2004 ◽  
Vol 18 (3) ◽  
pp. n/a-n/a ◽  
Author(s):  
G. Brooks Avery ◽  
Robert J. Kieber ◽  
Joan D. Willey ◽  
G. Christopher Shank ◽  
Robert F. Whitehead
Keyword(s):  
United States ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
River Water ◽  
Southeastern United States ◽  
Long Bay ◽  
Cape Fear River ◽  
Cape Fear

scholarly journals Flux and bioavailability of Cape Fear River and rainwater dissolved organic carbon to Long Bay, southeastern United States

2003 ◽  
Vol 17 (2) ◽  
pp. n/a-n/a ◽  
Author(s):  
G. B. Avery ◽  
Joan D. Willey ◽  
Robert J. Kieber ◽  
G. Christopher Shank ◽  
Robert F. Whitehead
Keyword(s):  
United States ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Southeastern United States ◽  
Long Bay ◽  
Cape Fear River ◽  
Cape Fear

Hydro-Climatological Influences on Long-Term Dissolved Organic Carbon in a Mountain Stream of the Southeastern United States

2016 ◽  
Vol 45 (4) ◽  
pp. 1286-1295 ◽  
Author(s):  
Nitin K. Singh ◽  
Wilmer M. Reyes ◽  
Emily S. Bernhardt ◽  
Ruchi Bhattacharya ◽  
Judy L. Meyer ◽  
...  
Keyword(s):  
United States ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Southeastern United States ◽  
Mountain Stream

Minimization of the Disinfection by-Product Precursors in Treated Waters Exposed to Ozone and Chlorine

2014 ◽  
Vol 884-885 ◽  
pp. 91-95
Author(s):  
Shang Chao Yue ◽  
Le Jun Zhao ◽  
Xiu Duo Wang ◽  
Qi Shan Wang ◽  
Feng Hua He
Keyword(s):  
Drinking Water ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Supply ◽  
River Water ◽  
Water Samples ◽  
Full Scale ◽  
Ultraviolet Absorbance ◽  
Treatment Processes ◽  
Removal Efficiencies

The objectives of this study were to investigate impact of preoxidation on disinfection by-product (DBP) precursors in drinking water via two different preoxidation methods. The full-scale study was conducted on surface river water in a water supply plant in Tianjin, China. Two treatment trains were performed, with prechlorination and preozonation as preoxidation methods, respectively. The water samples were collected on different stages along the treatment processes and analyzed by following organic parameters: dissolved organic carbon (DOC), UV254 and specific ultraviolet absorbance (SUVA). The results indicated that Train 2 with preozonation was more effective to reduce DBP precursors. Preozonation possessed an excellent ability in the removal of UV254 and SUVA, the removal efficiencies were 25.14% and 18.77%, respectively, comparing to the removal rates of 6.66% and 5.64% during prechlorination, separately.

scholarly journals Fluxes and retention of nutrients and organic carbon in Manko estuary, Okinawa, Japan: influence of river discharge variations

2014 ◽  
Vol 5 (2) ◽  
pp. 141 ◽  
Author(s):  
D. Shilla
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
River Water ◽  
Rainy Season ◽  
River Discharge ◽  
Geochemical Processes ◽  
Dissolved Nutrients ◽  
Transport And Transformation ◽  
Organic Nutrients ◽  
Annual Transport

Estuaries are often considered important filters for inorganic and organic nutrients, as they are located between the land and sea. This study reports on the fluvial fluxes and estuarine transformations and retention of dissolved nutrients (total oxidized nitrogen [TON = NO<sub>2</sub><sup>−</sup> and NO<sub>3</sub><sup>−</sup>]), NH<sub>4</sub><sup>+</sup>, PO<sub>4</sub><sup>3−</sup>, and dissolved organic carbon (DOC) in Manko estuary, Okinawa, Japan. The transport and transformation of dissolved nutrients and DOC varied widely among the eight conducted surveys due to variations in freshwater discharge and subsequent flushing times. Under high fluvial discharge, particularly during the May–June rainy season, the transport of nutrients and DOC accounted for up to 70%, 88%, 93%, and 53% of the annual transport of TON, NH<sub>4</sub><sup>+</sup>, PO<sub>4</sub><sup>3−</sup>, and DOC, respectively. The flushing times of river water into the estuary, which varied from 0.5 to 46 days, were important in determining the degree to which fluvial nutrients were transformed and retained within the estuary. The effect of long flushing times was evident during the dry months (December–March), when biological and geochemical processes within the estuary removed most of the fluvial nutrients and DOC.

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