Assessing fecal coliform fate and transport in a coastal watershed using HSPF

There is increasing concern regarding spread and proliferation of pathogenic microorganisms in watersheds and their impacts on water quality. In agricultural and rural watersheds fecal coliform occurrence, an indicator of pathogenic contamination, is often thought to be a result of land applications of animal waste. This study used the Hydrologic Simulation Program Fortran (HSPF) along with the Bacterial Indicator Tool to model fecal coliform transport in a coastal watershed with a view to identifying contaminant sources and key contributing areas. Results indicated that the highest levels of fecal coliform contamination (often exceeding the 400 counts/100 ml standard for the area) emanated from areas with and without livestock operations, and from largely forested areas, indicating that livestock operations were not the determining source of fecal coliform as suggested in previous studies. This study found HSPF to be an effective tool for identifying key coliform contributing areas in coastal watersheds.

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Evaluating the influence of climate change on the fate and transport of fecal coliform bacteria using the modified SWAT model

The Science of The Total Environment ◽

10.1016/j.scitotenv.2018.12.213 ◽

2019 ◽

Vol 658 ◽

pp. 753-762 ◽

Cited By ~ 10

Author(s):

Dong Jin Jeon ◽

Mayzonee Ligaray ◽

Minjeong Kim ◽

Gayoung Kim ◽

Gil Lee ◽

...

Keyword(s):

Climate Change ◽

Fecal Coliform ◽

Swat Model ◽

Fate And Transport ◽

Coliform Bacteria ◽

Fecal Coliform Bacteria

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Linking on-farm dairy management practices to storm-flow fecal coliform loading for California coastal watersheds

Environmental Monitoring and Assessment ◽

10.1007/s10661-005-3911-7 ◽

2005 ◽

Vol 107 (1-3) ◽

pp. 407-425 ◽

Cited By ~ 27

Author(s):

D. J. Lewis ◽

E. R. Atwill ◽

M. S. Lennox ◽

L. Hou ◽

B. Karle ◽

...

Keyword(s):

Fecal Coliform ◽

Management Practices ◽

Dairy Management ◽

Coastal Watersheds ◽

Storm Flow ◽

On Farm

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Electrospun Nanofibers for Scheming Water Pollution

10.4018/978-1-7998-8251-0.ch011 ◽

2022 ◽

pp. 284-308

Author(s):

M. Shamshi Haasan ◽

Ali Q. Alorabi ◽

Touseef Amna

Keyword(s):

Water Pollution ◽

Physical Property ◽

Electrospun Nanofibers ◽

Animal Waste ◽

High Porosity ◽

Pathogenic Microorganisms ◽

Global Problems ◽

Improve Water Quality ◽

Exponential Population Growth ◽

Water Borne

Water pollution is one of the key global problems which require immediate attention. Worldwide, it is predicted that more than 50% of countries will encounter water scarcities by 2025 which will increase to 75% by 2075. Each year more than 5 million people die due to water-borne diseases. The threat due to pollution by industries, exponential population growth, urbanization, by pathogenic microorganisms from human and animal waste, etc. The rise in water pollution and its subsequent effects on human health and environment is a matter of great concern. The water pollutants ought to be removed to improve water quality for human use. Nanoparticles or zero dimensional materials have been extensively studied since long, whereas one dimensional material (nanorods, nanotubes, nanowires, or nanofibers) have recently grabbed a lot of interest from global researchers. Nanofibers having large aspect ratio are grabbing incredible attention owing to dependency of physical property on directionality having high porosity and surface area as compared to normal fibers.

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Disinfection behavior of a UV-treated wastewater system using constructed wetlands and the rate of reactivation of pathogenic microorganisms

Water Science & Technology ◽

10.2166/wst.2020.007 ◽

2019 ◽

Vol 80 (10) ◽

pp. 1870-1879

Author(s):

Yenifer González ◽

Pablo Salgado ◽

Gladys Vidal

Keyword(s):

Constructed Wetlands ◽

Rural Areas ◽

Fecal Coliform ◽

Fecal Coliforms ◽

Treated Wastewater ◽

Pathogenic Microorganisms ◽

Visible Radiation ◽

Artificial Wetlands ◽

System A ◽

Reduction Efficiency

Abstract The use of constructed wetlands as a wastewater treatment system is a feasible solution for rural areas. However, these systems do not efficiently eliminate pathogenic microorganisms. Therefore, it is necessary to implement disinfection systems such as ultraviolet (UV) disinfection systems in constructed wetlands. To evaluate the behavior of a UV system, a pilot system of artificial wetlands connected to one such disinfection system was operated. The results show that when the total suspended solids (TSS) of the influent (already treated by the system of constructed wetlands) reached values of 26.7 mg/L, a reduction of 2.03 uLog in fecal coliforms was obtained. However, when the TSS increased to 34.7 mg/L, the reduction was only 0.33 uLog. In addition to the influence of the TSS on the fecal coliform reduction efficiency, there is a direct relationship between the transmittance and the sizes of the particles present in the influent. After UV treatment, the microorganisms showed a peak in photoreactivation of 27.8% at 4 h after irradiation with visible radiation, while under conditions of darkness, no reactivation was observed.

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Rainfall-Induced Release of Fecal Coliforms and Other Manure Constituents: Comparison and Modeling

Applied and Environmental Microbiology ◽

10.1128/aem.01121-06 ◽

2006 ◽

Vol 72 (12) ◽

pp. 7531-7539 ◽

Cited By ~ 50

Author(s):

A. K. Guber ◽

D. R. Shelton ◽

Y. A. Pachepsky ◽

A. M. Sadeghi ◽

L. J. Sikora

Keyword(s):

Fecal Coliform ◽

Sandy Loam ◽

Release Kinetics ◽

Fate And Transport ◽

Environmental Water ◽

Exponential Model ◽

Water Soluble ◽

Fecal Coliforms ◽

The One ◽

Kinetics Of

ABSTRACT Modeling release of fecal coliforms is an important component of fate and transport simulations related to environmental water quality. Manure constituents other than fecal coliforms may serve as natural tracers of fecal contamination provided that their release from manure to runoff is similar to the fecal coliform release. The objectives of this work were to compare release of fecal coliforms (FC), chloride (Cl−), organic carbon (OC), and water-soluble phosphorus (P) from dissolving manure and to assess the performance of three models in describing the observed release. Bovine manure was applied on 0.5- by 0.3-m bare and vegetated subplots with 20% slope on sandy loam and clay loam soils. Concentrations of Cl−, FC, OC, and P were measured in runoff collected from troughs at the edges of the subplots at 5-min intervals during 1-h rainfall simulations. The one-parametric exponential model and two-parametric Vadas-Kleinman-Sharpley model and Bradford-Schijven model were fitted to the data. The Bradford-Schijven model had uncorrelated parameters, one of which was linearly related to the irrigation rate, and another parameter reflected the presence or the absence of vegetation. Kinetics of the FC release from manure was similar to the release kinetics of P and OC. The Bradford-Schijven model is recommended to simulate the release of manure constituents.

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Seasonal study of a freshwater lake and migratory waterfowl for Campylobacter jejuni

Canadian Journal of Microbiology ◽

10.1139/m84-130 ◽

1984 ◽

Vol 30 (6) ◽

pp. 845-849 ◽

Cited By ~ 12

Author(s):

G. A. Hill ◽

D. J. Grimes

Keyword(s):

Campylobacter Jejuni ◽

Mississippi River ◽

Fecal Coliform ◽

Pathogenic Microorganisms ◽

Cecal Content ◽

Sediment Samples ◽

Migratory Waterfowl ◽

Fecal Streptococcus ◽

Water And Sediment ◽

Water And Sediment Samples

In the summer and fall of 1981, water and sediment samples form Lake Onalaska, a Mississippi River navigation pool near La Crosse, Wisconsin, were quantitatively examined for Campylobacter jejuni and for standard bacterial indicators of fecal pollution. Fifty cecal content samples, representing seven species of transient waterfowl captured during fall migration, were also assayed for C. jejuni. Fecal coliform and fecal streptococcus counts from the water and sediment samples agreed with previously established values for the pool and accurately reflected the influx of approximately 619 000 ducks and geese during fall migration. Campylobacter jejuni was not recovered from water, sediment, or cecal samples. This conflicts with previous reports which implied a cosmopolitan distribution of C. jejuni among waterfowl. Reasons for the absence of C. jejuni from the pool and from waterfowl in and around that pool were discussed, with special reference to method of recovery and sporadic distribution of other pathogenic microorganisms among migratory waterfowl.

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Effects of sea level rise on hydrology: case study in a typical mid-Atlantic coastal watershed

Journal of Water and Climate Change ◽

10.2166/wcc.2017.156 ◽

2017 ◽

Vol 8 (4) ◽

pp. 730-754 ◽

Cited By ~ 1

Author(s):

Xixi Wang ◽

Rui Li ◽

Homa Jalaeian Taghadomi ◽

Shohreh Pedram ◽

Xiao Zhao

Keyword(s):

Sea Level Rise ◽

Sea Level ◽

Relevant Information ◽

Groundwater Table ◽

Peak Discharge ◽

Long Term Effects ◽

Flood Peak ◽

Coastal Watershed ◽

Coastal Watersheds

Abstract Sea level rise (SLR) can negatively affect the hydrology of coastal watersheds. However, the relevant information is incomplete and insufficient in existing literature. The objective of this study is to present a modeling approach to predict long-term effects of SLR on changes of flood peak, flood stage, and groundwater table with an assumption that the historical climate would reoccur in the future. The study was conducted for a typical coastal watershed in southeast USA. The results indicate that sea level had been rising at a rate of 4.21 mm yr−1 from 1948 to 1982 but at a faster rate of 5.16 mm yr−1 from 1983 to 2013. At such SLR rates and by 2113, the groundwater table beneath the eastern part of the watershed would be raised by 0.10 to 0.29 m, while the annual mean peak discharge and flood stage at the watershed outlet would be increased by 13.84 m3 s−1 (from 3.63 to 17.47 m3 s−1) and 0.92 m (from zero to 0.92 m), respectively. The other parts of the watershed would be relatively less affected by SLR. For coastal watersheds, SLR will probably raise the groundwater table, and increase the magnitude and occurrence of peak discharge and flood stage.

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