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Pathogens Removal in a Sustainable and Economic High-Rate Algal Pond Wastewater Treatment System

Author

Listed:
  • Sherif Abd-Elmaksoud

    (Environmental Virology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Sayeda M. Abdo

    (Hydrobiology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Mahmoud Gad

    (Environmental Parasitology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Anyi Hu

    (CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China)

  • Mohamed Azab El-Liethy

    (Environmental Microbiology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Neveen Rizk

    (Environmental Virology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Mohamed A. Marouf

    (Environmental Parasitology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Ibrahim A. Hamza

    (Environmental Virology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

  • Hala S. Doma

    (Industrial and Municipal Wastewater Treatment Technology Laboratory, Water Pollution Research Department, National Research Centre, Giza 12622, Egypt)

Abstract

This study evaluates the efficiency of a sustainable technology represented in an integrated pilot-scale system, which includes a facultative pond (FP), a high-rate algal pond (HRAP), and a rock filter (RF) for wastewater treatment to produce water that complies with the Egyptian standards for treated wastewater reuse. Still, limited data are available on pathogen removal through HRAP systems. Thus, in this study, the performance of the integrated system was investigated for the removal of Escherichia coli ( E. coli ), coliform bacteria, eukaryotic pathogens ( Cryptosporidium spp., Giardia intestinalis , and helminth ova), somatic coliphages (SOMCPH), and human adenovirus (HAdV). Furthermore, physicochemical parameters were determined in order to evaluate the performance of the integrated system. The principal component analysis and non-metric multidimensional scaling analysis showed a strong significant effect of the integrated system on changing the physicochemical and microbial parameters from inlet to outlet. The mean log 10 removal values for total coliform, fecal coliform, and E. coli were 5.67, 5.62, and 5.69, respectively, while 0.88 log 10 and 1.65 log 10 reductions were observed for HAdV and SOMCPH, respectively. The mean removal of Cryptosporidium spp. and Giardia intestinalis was 0.52 and 2.42 log 10 , respectively. The integrated system achieved 100% removal of helminth ova. The results demonstrated that the system was able to improve the chemical and microbial characteristics of the outlet to acceptable levels for non-food crops irrigation. Such findings together with low operation and construction costs of HRAPs should facilitate wider implementation of these nature-based systems in remote and rural communities. Overall, this study provides a novel insight into the performance of such systems to eliminate multiple microbial pathogens from wastewater.

Suggested Citation

  • Sherif Abd-Elmaksoud & Sayeda M. Abdo & Mahmoud Gad & Anyi Hu & Mohamed Azab El-Liethy & Neveen Rizk & Mohamed A. Marouf & Ibrahim A. Hamza & Hala S. Doma, 2021. "Pathogens Removal in a Sustainable and Economic High-Rate Algal Pond Wastewater Treatment System," Sustainability, MDPI, vol. 13(23), pages 1-13, November.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:23:p:13232-:d:691012
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    References listed on IDEAS

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