In recent years, many designs have been developed for the anaerobic treatment of leachate. The UASB (Upflow Anaerobic Sludge Blanket) is currently the most recent process used for the treatment of these discharges in Morocco, it is a treatment system known by low sludge production and a high methanogenic activity.
This work aims is to present the importance of leachate treatment of household waste from the town of Kasba Tadla in Morocco By a process of UASB.
Our team is interested in studying how management and recovery of household waste in the city of Kasba Tadla in Morocco. We have shown on one hand the evolution of the tonnage of household waste in the period between 2014 and 2016, as the importance of screening and also determine the evolution of the quantities of leachate produced daily basis for four months, of January to the month of April 2015 and the characteristics of these liquid discharges and their impact on the environment and thought processing techniques.
The results obtained in this study show that the production of household and similar waste of around 11849 tonnes in the year 2014, and 0.27 tonnes / capita / year. These wastes are essentially of the organic material (74%), paper (3%), plastics (9%) of metal (1%) and glass (0.5%). The quantities of leachate produced monthly at the city range from a maximum of a maximum average daily volume of 2320 liters per day during the month of April 2015, and a minimum average daily volume of 1028 liters per day during the month January 2015 with a monthly average of about 46,656 liters per month. The physicochemical analysis of leachate from the region shows a high concentration of organic matter, COD is about 12240 mg O2 / l and high acidity (pH = 5.16), hence the importance of treatment these effluents through effective and adaptable technology to weather the study area namely the UASB technology before the direct discharge into the environment. Leachate treatment by the UASB technology has allowed us to have an allowance of 93% of COD and pH shift to neutral (pH = 6.9).
In conclusion, the results show the success of the leachate treatment UASB technique in the study area, especially that this technique is already proposed by the urban municipality for the treatment of wastewater.