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. 2014 Feb 28;12(1):52.
doi: 10.1186/2052-336X-12-52.

Indicator pathogens, organic matter and LAS detergent removal from wastewater by constructed subsurface wetlands

Behrooz Karimi, Mohammad Hassan Ehrampoush  1 , Hossin Jabary
Affiliations

Indicator pathogens, organic matter and LAS detergent removal from wastewater by constructed subsurface wetlands

Behrooz Karimi et al. J Environ Health Sci Eng. .

Abstract

Background: Constructed wetland is one of the natural methods of municipal and industrial wastewater treatments with low initial costs for construction and operation as well as easy maintenance. The main objective of this study is to determine the values of indicator bacteria removal, organic matter, TSS, ammonia and nitrate affecting the wetland removal efficiency.

Results: The average concentration of E. coli and total coliform in the input is 1.127 × 1014 and 4.41 × 1014 MPN/100 mL that reached 5.03 × 1012 and 1.13 × 1014 MPN/100 mL by reducing 95.5% and 74.4% in wetland 2. Fecal streptococcus reached from the average 5.88 × 1014 in raw wastewater to 9.69 × 1012 in the output of wetland 2. Wetland 2 could reduce 1.5 logarithmic units of E. coli. The removal efficiency of TSS for the wetlands is 68.87%, 71.4%, 57.3%, and 66% respectively.

Conclusions: The overall results show that wetlands in which herbs were planted had a high removal efficiency about the indicator pathogens, organic matter, LAS detergent in comparison to a control wetland (without canes) and could improve physicochemical parameters (DO, ammonia, nitrate, electrical conductivity, and pH) of wastewater.

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Figures

Figure 1
Figure 1
Schematic of subsurface constructed wetland.
Figure 2
Figure 2
Removal of ammonia, nitrate, suspended solids, BOD and COD in Site 1.
Figure 3
Figure 3
Effect of dissolved oxygen on the indicator organisms in raw wastewater and output 4 synthetic wetlands.
Figure 4
Figure 4
Effect of dissolved oxygen on nitrate and ammonia reduction in raw wastewater and output 4 synthetic wetlands.
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References

    1. Vega E, Lesikar B, Pillai SD. Transport and survival of bacterial and viral tracers through submerged-flow constructed wetland and sand-filter system. Bioresour Technol. 2003;89:49–56. doi: 10.1016/S0960-8524(03)00029-4. - DOI - PubMed
    1. Ying G-G. Fate, behavior and effects of surfactants and their degradation products in the environment. Environ Int. 2006;32:417–431. doi: 10.1016/j.envint.2005.07.004. - DOI - PubMed
    1. Takada H, Mutoh K, Tomita N, Miyadzu T, Ogura N. Rapid removal of linear alkylbenzenesulfonates (LAS) by attached biofilm in an urban shallow stream. Water Res. 1953–1960;1994:28.
    1. Karimi B, Ehrampoush MH, Ebrahimi A, Mokhtari M, Amin MM. Catalytic oxidation of hydrogen peroxide and the adsorption combinatory process in leachate waste pretreatment from composting factory. Int J Environ Health Eng. 2012;1:15. doi: 10.4103/2277-9183.94399. - DOI
    1. Moore M, Cooper C, Smith S Jr, Cullum R, Knight S, Locke M, Bennett E. Mitigation of two pyrethroid insecticides in a Mississippi Delta constructed wetland. Environ Pollut. 2009;157:250–256. doi: 10.1016/j.envpol.2008.07.025. - DOI - PubMed

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