Uso de águas pluviais para irrigação de uma horta por meio de aspersores

Abstract

In recent years humanity has faced increasingly intense water crises, whether due to poor management of its water resources, increased demand, pollution of water bodies and climate change. These problems end up harming the supply of drinking water to people, interfering with economic development and compromising the food security of the population. Thinking about these factors, it is necessary to think of alternatives to face these scarcity problems, especially in relation to food security for families. The implementation of a rainwater capture and storage system for irrigation of a vegetable garden is a good alternative to minimize the impact of these crises, at least in terms of single-family food. In this sense, the objective of this work was the design and construction of a rainwater harvesting system, and stored in a cistern. This water must be used for irrigation of a vegetable garden through sprinklers. The sizing of the capture system and the rainwater reservoir followed standards so that this water can be used without harming human health. During the execution of the project, precipitation occurred, but the largest volume occurred when the cistern was not yet completed. After the completion of the construction of the reservoir, there were low levels of precipitation, not being enough to fill the reservoir, thus, analyzes of the water for use in the garden were not carried out. The water column in the cistern was measured and the volume was calculated for subsequent application of 2.5% sodium hypochlorite. The calculated volume was approximately 2680 L, with this, 268 mL of 2.5% sodium hypochlorite was applied in order to eliminate or inactivate pathogenic microorganisms that could be present in the water. irrigation system and after that, the positive and negative aspects of the project were analyzed.