Abstract
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions
Highlights
Wastewater recycling and reuse is aligned with the UN Sustainable Development Goals (SDGs), Goal 6, as it becomes a more pressing issue due to the water scarcity and the need for improving sanitation
Lime chemical precipitation (LCP) is a process that leads to the formation of an instantaneous and intense precipitate followed by a vigorous “sweeping” phenomenon of particles (Semerjian et al, 2003)
The highest pH value reached was 12.5 and no further increase in pH was observed with the lime added, since lime is poorly soluble and added in excess to the stoichiometric values, for these experimental purposes, it will contribute to sludge and be dissociated in calcium cations (Ca2+) and hydroxide anions (OH-), increasing the concentration of these ions in the solution
Summary
Wastewater recycling and reuse is aligned with the UN Sustainable Development Goals (SDGs), Goal 6, as it becomes a more pressing issue due to the water scarcity and the need for improving sanitation. Hydroponic cultivation systems are an alternative biological technology for the agricultural reuse of wastewater and nutrient recovery without the environmental consequences of traditional methods (Prazeres et al, 2017). The hydroponic cultivation systems are widely used in commercial crop production and consist in cultivating plants, without the use of soil, with the roots submerged in a liquid nutrient solution. Due to their high levels of nutrients, urban wastewaters are a low-cost option to provide nutrients for the food crop production in hydroponic cultivating systems. Journal of Ecological Engineering Vol 21(3), 2020 the urban wastewater treatment has the potential to be an important part of circular economy if the resources (nutrients and the water itself) are efficiently recovered and/or reused
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
