Relevant Articles

This journal looked at the growing water crisis and decided to address the issue by looking at greywater reuse. They acknowledged a challenge with smaller-scale water reuse versus larger-scale operations. They found that smaller scale wastewater reuse was lacking adequate treatment. Despite facing challenges when working with greywater, in Israel, over 70% of its treated wastewater is used for their agriculture. This shows that it is possible to safely grow crops using greywater. When reading this article, their methods were very helpful in inspiring ideas for my own experiment. They used three different types of soils, sand, loam (a combination of sand, clay, and silt), and loess (mostly made up of silt). To remain constant, they planted one type of plant in all of the different types of soil, lettuce. They then used three different water sources, tap/freshwater, untreated greywater, and treated greywater. The water test was sampled every week, and the soil every 10 days. They tested for the total amount of Nitrogen by using the persulfate digestion method by UV spectrophotometric method, the total amount of Phosphorus by using the persulfate digestion method by vandomolybdophosphoric acid clorimetric method, as well as other elements such as Ca, Mg, Na, K, B. In their conclusion, they found that raw GW increased the number of surfactants, O & G, and coliform bacteria. Both the sand and loam soils had significantly higher water repellency compared to loess soil which had no difference despite the different water types.