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Original Articles Open Access
Sewage sludge is an unwanted and inevitable by-product from wastewater treatment plants, the purpose of which is to clarify wastewater, and present a surcharge, which can contaminate water and soil, causing a big environmental problem. The treatment by anaerobic digestion can be used to reduce the pollution of this waste and producing methane. Multivariate compositional data analysis methods were used to investigate physico-chemical parameters during anaerobic digestion of sewage sludge in Morocco. The objective of this study is to determine the coefficient of methane efficiency, identify the potential for energy production from anaerobic digestion of sewage sludge in Morocco, while maintaining the stability of physico-chemical parameters in the environment. To do this, a series of analyzes of descriptive and quantitative data was studied physico-chemical parameters. Multivariate statistical analysis was carried out at the entrance and exit of the activated sludge treatment from tests carried out experiments in a laboratory scale using the mesophilic reactor 1-L Pyrex (CSTR) to 37°C, and using as raw material the waste water sludge produced from the processing station wastewater. The results of statistical analyzes indicate that the percentage of variance is 55.29% and 18.59% respectively for the axes F1 and F2 and the total information is estimated at a percentage of 73.58%. The correlation circle confirms the correlation between SVo and SVi parameters which could be explained by a good biodegradability of organic matter. Thus the results indicate that there is a good performance at the mesophilic digestion due to the stability of physicochemical parameters and proper methane yield.
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Author(s): Siham Belhadj Majdouline Larif Fadoua Karouach Yassine JouteAbdellaziz Chaouch and Hassan El Bari
Anaerobic Digestion, Sewage Sludge, Methane yield, Principal Component Analysis, Biodegradability, Volatiles Solids., sewage sludge,anaerobic digestion