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Assessment Of Pollutants Removal Processes And Kinetic Modelling In Vertical Constructed Wetlandsat

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Inadequate access to clean water has become one of the most pervasive problems affecting human health, and these problems are expected to be worsening in coming decades (Shannon et al., 2008). Many cities in developing countries have generally fallen behind in constructing and managing sewage treatment facilities, since treatment of wastewater is always considered one of the lowest priorities among the various infrastructure developments (Konnerup et al., 2011; Li and Ye,2009). In order to protect public and environmental fitness, novel technologies are required to reduce the concentrations of nutrients, microbes and chemicals from municipal wastewater prior to discharge into the environment and/or water reuse (Nwachcuku and Gerba, 2004;Petrovic et al., 2003).

Ammoniacal nitrogen (NH4-N)is one of the most widely distributed pollutants in wastewater and consequently causes eutrophication and eco-toxicity to aquatic ecosystem due to the depletion of dissolved oxygen in receiving waters (Coban et al., 2015; Harrington and McInnes, 2009;Camargo and Alonso, 2006).The nutrients in wastewater comprise mostly nitrogen (N) and phosphate (P).The toxicity of ammonia (NH3) to fish has been subjected of many related studies and also caused serious ecological problems (Chen et al., 2011; Smart, 1978). Many municipal, agricultural, and storm water discharges have large proportions of total P in the dissolved form and long-term P retention in wetlands is a challenge (Forbes et al., 2004). Sulfate is a common contaminant of wastewater, and is not usually considered a health concern, but it can, under some circumstances, cause diarrhoea (Chen et al., 2016).

The natural treatment systems are preferably used because of low investment and maintenance requirements, as well as due to their effectiveness and ease of use (Zhang et al., 2015). Constructed wetlands (CWs) have been successfully used for treating various wastewaters for decades and have been identified as a sustainable wastewater management option for developing countries (Shutes et al., 2001). Constructed wetland (CWs) is a cost-effective wastewater treatment alternative with promising performance to treat domestic/municipal, agricultural and industrial wastewater (Badejo et al., 2015; Kouawa et al., 2015). The CWs have been tried out for the treatment of different type of pollutants present in wastewater organic and inorganic like heavy metals (Sochacki et al., 2014;Yadav et al., 2012a), dye (Tee et al., 2015;Yadav et al., 2012b and Yadav et al., 2012c), nutrients (Vymazal, 2007;Abou- ElelaHellal,2012) and microbes (Hench et al., 2003). CWs, which is consisted of wetland plants, wetland substrate, micro-organisms and other ingredient elements, are effective systems to treat wastewater through the complex combination of physical, chemical and biological processes (Li et al., 2015; Liu et al., 2015; Xu et al.,2015;Cui, 2013;Dordio and Carvalho,2013).

Mechanisms for removal of pollutants in wastewater byiron scraps (ISs) are still unresolved in many cases (Noubactep, 2008; Greenlee et al., 2008).Therefore, it required further attention to elucidate various mechanismslike adsorption, iron dissolution, and its precipitation in CWs.The objectives of this research paper are to present data obtained at higher pollutants loading based study in laboratory scale Semi-Continuous Vertical flow CWs integrated withiron scraps (ISs) and augmented bacterial consortium enrichment (BCE).Inadequate access to clean water has become one of the most pervasive problems affecting human health, and these problems are expected to be worsening in coming decades (Shannon et al., 2008). Many cities in developing countries have generally fallen behind in constructing and managing sewage treatment facilities, since treatment of wastewater is always considered one of the lowest priorities among the various infrastructure developments (Konnerup et al., 2011; Li and Ye,2009). In order to protect public and environmental fitness, novel technologies are required to reduce the concentrations of nutrients, microbes and chemicals from municipal wastewater prior to discharge into the environment and/or water reuse (Nwachcuku and Gerba, 2004;Petrovic et al., 2003). Ammoniacal nitrogen (NH4-N)is one of the most widely distributed pollutants in wastewater and consequently causes eutrophication and eco-toxicity to aquatic ecosystem due to the depletion of dissolved oxygen in receiving waters (Coban et al., 2015; Harrington and McInnes, 2009;Camargo and Alonso, 2006).The nutrients in wastewater comprise mostly nitrogen (N) and phosphate (P).The toxicity of ammonia (NH3) to fish has been subjected of many related studies and also caused serious ecological problems (Chen et al., 2011; Smart, 1978). Many municipal, agricultural, and storm water discharges have large proportions of total P in the dissolved form and long-term P retention in wetlands is a challenge (Forbes et al., 2004). Sulfate is a common contaminant of wastewater, and is not usually considered a health concern, but it can, under some circumstances, cause diarrhoea (Chen et al., 2016).

The natural treatment systems are preferably used because of low investment and maintenance requirements, as well as due to their effectiveness and ease of use (Zhang et al., 2015). Constructed wetlands (CWs) have been successfully used for treating various wastewaters for decades and have been identified as a sustainable wastewater management option for developing countries (Shutes et al., 2001). Constructed wetland (CWs) is a cost-effective wastewater treatment alternative with promising performance to treat domestic/municipal, agricultural and industrial wastewater (Badejo et al., 2015; Kouawa et al., 2015). The CWs have been tried out for the treatment of different type of pollutants present in wastewater organic and inorganic like heavy metals (Sochacki et al., 2014;Yadav et al., 2012a), dye (Tee et al., 2015;Yadav et al., 2012b and Yadav et al., 2012c), nutrients (Vymazal, 2007;Abou- ElelaHellal,2012) and microbes (Hench et al., 2003). CWs, which is consisted of wetland plants, wetland substrate, micro-organisms and other ingredient elements, are effective systems to treat wastewater through the complex combination of physical, chemical and biological processes (Li et al., 2015; Liu et al., 2015; Xu et al.,2015;Cui, 2013;Dordio and Carvalho,2013).

Mechanisms for removal of pollutants in wastewater byiron scraps (ISs) are still unresolved in many cases (Noubactep, 2008; Greenlee et al., 2008).Therefore, it required further attention to elucidate various mechanismslike adsorption, iron dissolution, and its precipitation in CWs. The objectives of this research paper are to present data obtained at higher pollutants loading based study in laboratory scale Semi-Continuous Vertical flow CWs integrated withiron scraps (ISs) and augmented bacterial consortium enrichment (BCE).

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GradesFixer. (2019, July, 10) Assessment Of Pollutants Removal Processes And Kinetic Modelling In Vertical Constructed Wetlandsat. Retrived May 26, 2020, from https://gradesfixer.com/free-essay-examples/assessment-of-pollutants-removal-processes-and-kinetic-modelling-in-vertical-constructed-wetlandsat/
"Assessment Of Pollutants Removal Processes And Kinetic Modelling In Vertical Constructed Wetlandsat." GradesFixer, 10 Jul. 2019, https://gradesfixer.com/free-essay-examples/assessment-of-pollutants-removal-processes-and-kinetic-modelling-in-vertical-constructed-wetlandsat/. Accessed 26 May 2020.
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