Comparative Performance of Water Hyacinth (Eichhornia crassipes) and Water Lettuce (Pista stratiotes) in Preventing Nutrients Build‐up in Municipal Wastewater

Abstract

Studies on removal of nutrients from domestic wastewater using water hyacinth (Eichhornia crassipes) and water lettuce (Pista stratiotes) were conducted. The plants were grown in 68 L of wastewater with 21‐day retention period in fiber‐glass tanks with another similar tank as control. Eichhornia crassipes performed better than P. stratiotes in reducing the concentrations of nitrate‐nitrogen and ortho‐phosphates while P. stratiotes performed better than E. crassipes in reducing the concentrations of ammoniacal‐nitrogen (NH4‐N) and nitrite‐nitrogen. On average, E. crassipes reduced the NH4‐N concentration by 72%, P. stratiotes reduced the concentration by 83% and the concentration in the control was reduced by 95%. On average, E. crassipes reduced the phosphate concentration by 55%, P. stratiotes reduced the concentration by 60% and the concentration in the control increased by 28%. Algae significantly reduced the concentration of NH4‐N.

A Retrospective Environmental Assessment of the Natural Heritage of Dal Lake for Prospective Implication Scenarios

“…They are capable to remove nutrients even at low loading rates [100]. Their adaptive advantage to lock up minerals from nutrient pool is helpful to check degradation primarily and restore mineral loading later on [101]. N and P are intimately related to biological productivity of aquatic ecosystems [1].…”

Efficiency of Eichhornia crassipes in the treatment of raw kitchen wastewater

“…The performance of EC was also evaluated for domestic wastewater collected from stabilized pond [14][15][16], raw sewage from municipal wastewater treatment plant [17,18], synthetic medium and groundwater [19], sewage from the aerated lagoon [20], raw wastewater from fish farm [21], dye wastewater [22], oily river water [23], domestic wastewater [24], dairy wastewater [25] and river water [26].…”

Genetic Programming based Modeling Method for Prediction of Phosphate in Water Hyacinth based Wetland System

“…There is growing interest towards macrophyte based phosphate removal system in now adays because of low economy, low energy (zero energy) and ease in handling of plants. Many free floating macrophytes are used for nutrient removal in water and wastewater such as water lettuce, duckweed, water hyacinth etc., [2,3,4,5,6,7,11,12,13]. Free orthophosphate is the only from of phosphorous blelieved to be directly utilized by algae and macrophytes [2,3].…”