Wastewater treatment using integrated anaerobic baffled reactor and Bio-rack wetland planted with Phragmites sp. and Typha sp.

Journal of Environmental Health Science Engineering

Alireza Valipour¹  Kwang-Sung Woo¹  Abbas Akbarzadeh²  Shervin Jamshidi³ 

[1] Department of Civil Engineering, Yeungnam University, Gyungsan, South Korea;Water Research Institute (WRI), Tehran, Iran;Department of Environmental Engineering, Faculty of Environment, University of Tehran, Tehran, Iran

关键词: Domestic wastewater treatment;    Typha sp;    Phragmites sp;    Bio-rack wetland system;    Anaerobic baffled reactor;   

Others  :  1164569
DOI  :  10.1186/s40201-014-0131-5

 received in 2014-01-14, accepted in 2014-10-15,  发布年份 2014

【 摘 要 】

The purpose of this study is to examine the potential use of anaerobic baffled reactor (ABR) followed by Bio-rack wetland planted with Phragmites sp. and Typha sp. for treating domestic wastewater generated by small communities (751 mg COD/L, 500 SCOD mg/L, 348 mg BOD₅/L). Two parallel laboratory-scale models showed that the process planted with Phragmites sp. and Typha sp. are capable of removing COD by 87% & 86%, SCOD by 90% & 88%, BOD₅ by 93% & 92%, TSS by 88% & 86%, TN by 79% & 77%, PO₄-P by 21% & 14% at an overall HRT of 21 (843 g COD/m³/day & 392 g BOD₅/m³/day) and 27 (622 g COD/m³/day & 302 g BOD₅/m³/day) hours, respectively. Microbial analysis indicated a high reduction in the MPN of total coliform and TVC as high as 99% at the outlet end of the processes. The vegetated system using Phragmites sp. showed significantly greater (p <0.05) pollutant removal efficiencies due to its extensive root and mass growth rate (p <0.05) of the plant compared to Typha sp. The Phragmites sp. indicated a higher relative growth rate (3.92%) than Typha sp. (0.90%). Microorganisms immobilized on the surface of the Bio-rack media (mean TVC: 2.33?×?10⁷ cfu/cm²) were isolated, identified and observed using scanning electron microscopy (SEM). This study illustrated that the present integrated processes could be an ideal approach for promoting a sustainable decentralization, however, Phragmites sp. would be more efficient rather than Typha sp.

【 授权许可】

   
2014 Jamshidi et al.; licensee BioMed Central Ltd.

【 图 表 】

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