Reuse of Treated Domestic Sewage for Irrigation Purposes Using the Algal-based Treatment System

Jothieswari, M.; Prabhakaran, N. K.; Krithika, A; Swarnalatha, S.

doi:10.1007/s11270-023-06497-0

Cited by 2 publications

(1 citation statement)

References 66 publications

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“…It was reported that increasing the microalgal biomass in urban wastewater might effectively lower the salinity because increased soil salinity and total dissolved solids (TDS) in UW could cause soil to become sodic [130]. As a result, UW that has undergone microalgal treatment is appropriate for fertigation or irrigation applications [131][132][133]. Even though the nutrient levels are reduced and the salinity is decreased, before being used for fertigation or irrigation after microalgal treatment, the presence of bacterial species, such as E. coli, intestinal nematodes, certain antibiotic-resistant bacteria, antibiotic-resistant genetic material, and several organic and toxic pharmaceutical compounds, may need to be maintained as per the prescribed regulation standards.…”

Section: Applications Of Microalgal-treated Wastewater (Mtw)mentioning

confidence: 99%

Utilization of Microalgae for Urban Wastewater Treatment and Valorization of Treated Wastewater and Biomass for Biofertilizer Applications

Khan,

Thaher,

Abdulquadir

et al. 2023

Sustainability

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Rapid urbanization has substantially increased freshwater consumption and consequent wastewater generation. The produced wastewater is an abundant resource of phosphorus, nitrogen, and organics. Currently, well-established activated sludge processes are utilized in conventional wastewater treatment plants to remove organics. However, removing nitrogenous and phosphorus compounds continues to be challenging and energy-intensive for urban wastewater treatment plants. Therefore, the current study aims to understand how photosynthetic microalgae can recover phosphorus and nitrogen from urban wastewater and how wastewater-grown microalgae biomass may be used as a biofertilizer and biostimulant. Utilizing microalgae biomass treated with urban wastewater as a biofertilizer promotes plant growth in a manner similar to other organic manures and conventional fertilizers while minimizing nutrient loss to the soil. Furthermore, the microalgal recovery of nutrients from urban wastewater could have potential energy reductions of 47% and 240% for nitrogen and phosphorus, respectively. In addition to producing treated wastewater suitable for a variety of irrigation systems, microalgae biomass is a potential sustainable alternative resource that could reduce conventional inorganic fertilizer usage.

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