Treatment and Valorization of Slaughterhouse Wastewaterin Agriculture

The reuse of wastewater, after treatment, is part of the country's water resource mobilization and development strategy.In irrigation and compared to conventional resources, the contribution of treated wastewater remains low, accounting for less than 1% of irrigated areas.However, the reuse of treated wastewater can be an important alternative to the use of untreated freshwater in the agricultural sector, particularly in a country like Morocco, where irrigation uses up to 90% of the consumed water.This study aims to assess the effect of treated wastewater reuse on the growth of beans (using stem length and leaf number).The experiment was conducted by irrigating bean plants with four types of water: raw slaughterhouse wastewater, biologically treated water with light, sand-filtered water, and well water used as a control.The effects of these waters on bean development and production were compared to determine the impact of different treatments.The results indicate that irrigation with treated wastewater can be a viable alternative to the use of untreated water in agriculture, particularly in Morocco, where irrigation represents a significant portion of water consumption.However, prior treatment of wastewater, especially that from slaughterhouses, is crucial to avoid negative effects on crop growth.These results highlight the importance of wastewater treatment before reuse, offering a new perspective on the sustainable management of water resources in Morocco.