Use of constructed wetlands to process agricultural wastewater

Peterson, Hans G.

doi:10.4141/p97-142

Cited by 23 publications

(14 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Contaminant removal from water can result, in part, via uptake by aquatic plants. Constructed wetlands, used for remedial purposes, are generally designed to maximize the residence time of the contaminated water in the wetland and to enhance contact with vegetative growth (Peterson, 1998). Longer residence times also enhance other routes of herbicide dissipation from water, such as photodegradation, volatilization, microbial degradation, etc.…”

Section: Resultsmentioning

confidence: 99%

Herbicide and Nutrient Transport from an Irrigation District into the South Saskatchewan River

Cessna

Elliott²,

Tollefson³

et al. 2001

J of Env Quality

View full text Add to dashboard Cite

Pesticides and nutrients can be transported from treated agricultural land in irrigation runoff and thus can affect the quality of receiving waters. A 3-yr study was carried out to assess possible detrimental effects on the downstream water quality of the South Saskatchewan River due to herbicide and plant nutrient inputs via drainage water from an irrigation district. Automated water samplers and flow monitors were used to intensively sample the drainage water and to monitor daily flows in two major drainage ditches, which drained approximately 40% of the flood-irrigated land within the irrigation district. Over three years, there were no detectable inputs of ethalfluralin into the river and those of trifluralin were less than 0.002% of the amount applied to flood-irrigated fields. Inputs of MCPA, bromoxynil, dicamba and mecoprop were 0.06% or less of the amounts applied, whereas that for clopyralid was 0.31%. The relatively higher input (1.4%) of 2,4-D to the river was probably due its presence in the irrigation water. Corresponding inputs of P (as total P) and N (as nitrate plus ammonia) were 2.2 and 1.9% of applied fertilizer, respectively. Due to dilution of the drainage water in the river, maximum daily herbicide (with the exception of 2,4-D) and nutrient loadings to the river would not have resulted in significant concentration increases in the river water. There was no consistent remedial effect on herbicides entering the river due to passage of the drainage water through a natural wetland. In contrast, a considerable portion of the nutrients entering the river originated from the wetland.

show abstract

Section: Resultsmentioning

confidence: 99%

Herbicide and Nutrient Transport from an Irrigation District into the South Saskatchewan River

Cessna

Elliott²,

Tollefson³

et al. 2001

J of Env Quality

View full text Add to dashboard Cite

show abstract

“…An alternative to creating a carbon copy of species complement is to create a system equivalent in function to the pre-disturbance state. Restored systems can be functionally superior to predisturbance systems, as in the case of wetlands engineered for nutrient removal (e.g., Peterson 1998). The growing field of ecological engineering is rich with examples of such enhanced systems (Ansola et al 1995, Kadlec and Knight 1996, Knowlton et al 2002, Kangas 2003, and will become ever more important to society as we continue to degrade natural systems.…”

Section: The Myth Of the Carbon Copymentioning

confidence: 99%

The Myths of Restoration Ecology

Hilderbrand¹,

Watts²,

Randle³

2005

E&S

382

274

View full text Add to dashboard Cite

“…They are engineered systems built to utilize the treatment processes available in natural wetlands in a controlled and predictable manner (Benham and Mote 1999). Due to the natural processes taking place in wetland systems, little or no fossil-fuel-derived energy inputs and chemicals are required to treat wastes, making wetlands more economical waste treatment systems than conventional biological sewage treatment (Kadlec and Knight 1996;Peterson 1998).…”

mentioning

confidence: 99%

Phosphorus adsorption characteristics of a constructed wetland soil receiving dairy farm wastewater

Jamieson¹,

Stratton²,

Madani³

2002

Can. J. Soil. Sci.

View full text Add to dashboard Cite

. 2002. Phosphorus adsorption characteristics of a constructed wetland soil receiving dairy farm wastewater. Can. J. Soil Sci. 82: 97-104. Adsorption to soil has been identified as a key wastewater P removal mechanism in treatment wetlands. Batch incubation experiments were performed to measure the capacity of a constructed dairy farm wetland in Pictou County, Nova Scotia, to remove P from solution. The constructed wetland had been receiving wastewater since 1996. Non-linear regression analysis was performed using the Langmuir adsorption model to describe the P adsorption characteristics for the wetland soil under study. The Langmuir model was adequate in describing the P adsorption characteristics of the system studied. The P adsorption maxima found were approximately 925, 924, and 1600 mg P kg -1 soil, for the deep zone soil, shallow zone soil, and a background soil (not receiving wastewater), respectively. The P adsorption maxima for the deep zone and shallow zone soils were not significantly different (P > 0.05) from one another, but were significantly lower (P < 0.05) than the background soil. These data, together with information on wastewater inflow and P loading, were used to predict a lifespan of 8 yr for this wetland, relative to P removal.Key words: Phosphorus, wetlands, constructed, adsorption, Langmuir, saturation Jamieson, T. S., Stratton, G. W., Gordon, R. et Madani, A. 2002. Adsorption du phosphore par une terre humide artificielle recevant les eaux usées d'une exploitation laitière. Can. J. Soil Sci. 82: 97-104. Un des principaux moyens pour extraire le phosphore (P) des eaux usées dans le traitement des terres humides est l'adsorption par le sol. Les auteurs ont recouru à l'incubation en lot pour jauger la capacité d'une terre humide artificielle à retirer le P dissous. La terre humide en question accueille les eaux usées d'une exploitation laitière du comté de Pictou, en Nouvelle-Écosse, depuis 1996. On a appliqué l'analyse par régression non linéaire au modèle d'adsorption de Langmuir pour préciser les propriétés du sol à l'étude. Le modèle de Langmuir décrit bien le mécanisme d'adsorption du système examiné. La quantité maximale de P adsorbée s'établit respectivement autour de 925, de 924 et de 1 600 mg par kg de sol pour la couche profonde, la couche superficielle et le sol témoin (ne recevant pas les eaux usées). La quantité maximale de P adsorbée ne diffère pas sensiblement (P > 0,05) entre la couche profonde et la couche superficielle, mais elle varie sensiblement de celle relevée dans le sol témoin (P < 0,05). Selon ces résultats et d'après les données sur l'apport d'eaux usées et la charge de P, les chercheurs estiment que la terre humide à l'étude parviendra à saturation au bout de huit ans.

show abstract

Use of constructed wetlands to process agricultural wastewater

Cited by 23 publications

References 34 publications

Herbicide and Nutrient Transport from an Irrigation District into the South Saskatchewan River

Herbicide and Nutrient Transport from an Irrigation District into the South Saskatchewan River

The Myths of Restoration Ecology

Phosphorus adsorption characteristics of a constructed wetland soil receiving dairy farm wastewater

Contact Info

Product

Resources

About