Nutrient removal by floating aquatic macrophytes cultured in anaerobically digested flushed dairy manure wastewater

Sooknah, Reeta D; Wilkie, Ann C.

doi:10.1016/j.ecoleng.2004.01.004

Cited by 299 publications

(147 citation statements)

References 22 publications

Supporting

Mentioning

134

Contrasting

Unclassified

Order By: Relevance

“…High levels of salinity in wastewater can limit the growth of water hyacinth and other aquatic macrophytes (Sooknah and Wilkie, 2004).…”

Section: Discussionmentioning

confidence: 99%

Anatomical studies on water hyacinth (Eichhornia crassipes(Mart.) Solms) under the influence of textile wastewater

Mahmood¹,

Siddiqi²,

Islam³

et al. 2005

J. Zhejiang Univ. Sci.

View full text Add to dashboard Cite

Mahmood et al. / J Zhejiang Univ SCI 2005 6B(10)Abstract: Water hyacinth (Eichhornia crassipes (Mart.) Solms) is a prolific free floating aquatic macrohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from textile wastewater on the anatomy of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7~50 µm), reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root cells. The presence of raphide crystals was noted in parenchyma cells of various organs in treated plants.

show abstract

“…High levels of salinity in wastewater can limit the growth of water hyacinth and other aquatic macrophytes (Sooknah and Wilkie, 2004).…”

Section: Discussionmentioning

confidence: 99%

Anatomical studies on water hyacinth (Eichhornia crassipes(Mart.) Solms) under the influence of textile wastewater

Mahmood¹,

Siddiqi²,

Islam³

et al. 2005

J. Zhejiang Univ. Sci.

View full text Add to dashboard Cite

show abstract

“…For example, the low dissolved oxygen prevented increases in nitrate-nitrogen that otherwise would occur through nitrification of the high concentrations of ammonia found in several of the wetlands and increased potential for denitrification. Past studies have demonstrated that both submerged and free-floating macrophytes have a high capacity to remove large concentrations of nutrients (Greenway, 1997;Sooknah and Wilkie, 2004). Under high temperature conditions, E. crassipes (water hyacinth) has been reported to assimilate up to 777 mg N m −2 day −1 and 200 mg P m −2 day −1 (DeBusk et al, 1995).…”

Section: Free-floating Macrophytesmentioning

confidence: 99%

Tropical treatment wetlands dominated by free-floating macrophytes for water quality improvement in Costa Rica

Nahlik

Mitsch

2006

Ecological Engineering

146

View full text Add to dashboard Cite

a b s t r a c tFive tropical treatment wetlands dominated by floating aquatic plants and constructed to deal with a variety of wastewaters were compared for their effectiveness in treating organic matter and nutrients in the Parismina River Basin in eastern Costa Rica. Wastewaters were from a dairy farm, a dairy processing plant, a banana paper plant, and a landfill. Four of the five wetland systems were effective in reducing nutrient levels of effluents before water was discharged into rivers. Ammonia levels in water entering most wetlands were considerably higher than ambient (i.e., riverine) levels; concentrations were reduced by as much as 92% in the wetlands and retained at a maximum rate of 166 g N m −2 year −1 .Nitrate nitrogen removal was variable, but occurred in low concentrations in the inflows (less than 1 mg N L −1 ). Phosphate phosphorus was present in high levels but was effectively reduced through the wetlands (92 and 45% reductions through dairy farm wetlands, 83% reduction through banana paper wetlands, and 80% reduction through dairy processing wetlands). Retention of phosphate phosphorus ranged from 0.1 to 10.7 g P m −2 year −1 in the treatment wetlands. Dissolved oxygen in the wetland outflows were ≤2 mg L −1 in three of the sampled wetlands, most likely a result of the abundant free-floating macrophytes that sheltered the water from diffusion and shaded aquatic productivity. The efficacy of these created wetlands to treat effluents from different sources varied, and modified wetland designs or active management may be necessary to improve water quality even further.Recommendations on tropical wetland design and management are presented, as are suggestions for implementing this ecological engineering approach with farmers in Central America.

show abstract

“…In the past 30 years, the FTWs have been tested and applied in laboratories and at pilot scales [3][4][5][6][7][8][9]. Characterized by no extra land demand and adaption to a wide range of water depth, FTWs have been widely used in the treatment of domestic wastewater [10], river water [7,11,12], lake water [5,13,14], agricultural runoff [4,15], swine sewage [16], rainfall [17], storm water [18] and urban runoff [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of Stubble Heights and Treatment Duration Time on the Performance of Water Dropwort Floating Treatment Wetlands (FTWS)

Xin¹,

Li²,

Nielsen³

et al. 2012

Ecological Chemistry and Engineering S

View full text Add to dashboard Cite

show abstract

Nutrient removal by floating aquatic macrophytes cultured in anaerobically digested flushed dairy manure wastewater

Cited by 299 publications

References 22 publications

Anatomical studies on water hyacinth (Eichhornia crassipes(Mart.) Solms) under the influence of textile wastewater

Anatomical studies on water hyacinth (Eichhornia crassipes(Mart.) Solms) under the influence of textile wastewater

Tropical treatment wetlands dominated by free-floating macrophytes for water quality improvement in Costa Rica

Effect of Stubble Heights and Treatment Duration Time on the Performance of Water Dropwort Floating Treatment Wetlands (FTWS)

Contact Info

Product

Resources

About