The discharge of sewage and industrial waste into the world’s freshwater bodies has become an increasingly alarming issue with highly pervasive implications: waterborne diseases contracted by exposure to contaminated water result in 3.4 million deaths each year. This project thus aims to establish a cost-effective and accurate method of real-time water impurity detection, and to design an early-warning system for water-borne disease outbreaks in rural and low-resource settings. A novel software application that applies deep convolutional neural networks and sensing technology to the bacteriological and chemical evaluation of freshwater sources was developed. When synergized with IoT, the application can facilitate communication with individual households, local governments, and health authorities, streamlining environmental support and increasing the efficacy of purification efforts.

Less than one percent of the earth’s water is easily accessible to us as freshwater and nearly half of this water is heavily polluted with pesticides, emerging contaminants, and heavy metals due to waste from industry, human establishments, and agriculture. This research aimed to remove these key classes of contaminants by manipulating biochar surface area, controlling chemical composition and catalytic properties for oxidative breakdown, adding surface complexing agents, and modifying intrinsic pore size.

Sri Lanka is an agricultural country, it is important to use water efficiently due to the scarcity of good quality water. The project introduced a novel watering device made from the waste plastic water bottles installed by the side of the plants adapting the drip irrigation system to irrigate to the root zone. The research proved that seawater irrigation with solar evaporation techniques can also be used in modern agriculture especially for low water-required crops. At the same time, farmers will be able to conserve water and reduce the operational cost of cultivation and, when practiced at a large scale, bring salt as a by-product.

Protein deficiency could be appearing in the future, because of the population growth, so the alternative protein sources will play main role in the nutrition of human population. In our research we used alfalfa(Medicago sativa) as alternative protein source, from which we could create a leaf protein concentrate. The isolation of leaf protein resulted a very large amount of brown juice and it has a harmful effect on the environment. For example it can cause eutrophication.

Accidental spills of oil products and the release of oil products into water bodies can also lead to deterioration of health and life of the population. Are there effective, affordable, environmentally friendly ways to eliminate oil pollution? What natural materials are the most effective for removing oil and gasoline from water surfaces? The search for answers to these questions became the main reason of our research.
Hypothesis: plant fibrous materials can be used for the sorption of petroleum products when they enter water bodies.
Thus, the hypothesis that it is possible to find available plant materials with the help of which it is possible to collect effectively oil and oil products from the surface of the water has been confirmed.

The San Pedro River, located in the border of Mexico and Guatemala, is of great importance to the Mayan culture, connects a wide wetland network, and is a revenue source to local communities, but is being affected by pollution and the growth of aquatic weeds. The rural border communities also face the scarcity of commercial fertilizers, which hinders their participation in productive programs. Here, we studied the potential use of aquatic weeds such as Eichhornia crassipes, P. stratiotes, and Salvinia molesta, to produce a biofertilizer. After performing physicochemical analysis, germination, and growth tests, we scientifically confirmed that the Biophyte fertilizer is safe and adequate for use by farmers. Finally, we also worked along the community to create know-how and awareness.

NATRIFIER DISPENSER is a natural purification system that helps to purify water polluted with petroleum product using locally sources materials such as Moringa Oleifera seed and granulated activated charcoal. This project also entails development of ‘’Natrifier’’ a sustainable mobile water purification flask for families living in affected communities to purify polluted water themselves.

Este proyecto presenta un sistema de recogida de agua de lluvia que reutiliza botellas de PET, que interconectadas con otras botellas forman un depósito de agua vertical, compacto y resistente a las presiones, que ocupa un espacio reducido. El proyecto tiene como objetivo satisfacer las necesidades de ahorro de agua de la Escuela Primaria Guillermo Frías, ubicada en Mecapaca (Ciudad de La Paz); esta zona presenta constantes problemas relacionados con el suministro de agua. El sistema tiene una función similar con Ekomuros, pero a diferencia de ellos, tiene un sistema de filtración basado en el uso de cáscara de quinua, que contiene saponina. La saponina es un antifúngico;que elimina hongos y bacterias, también hace espuma, por lo que el agua recolectada se puede utilizar en los baños de los niños de primaria de la escuela.

The water crisis in megacities like Dhaka intensifies as we don’t realize how much water we use or how much we waste.  The primary purpose of our work is to reduce water wastage so that we can conserve water resources. In our paper, we tried to develop an integrated system, which will help people track and predict their water usage habits to suggest more efficient behaviours which will be easy to implement as well so that it can be popularised in megacities. Moreover, the system includes an option to reuse greywater by recycling it to reduce unnecessary water usage and prevent wastage. As a result, the proposed system will help us to improve our water usage behaviours and conserve our limited resources.