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The treatment domestic urban wastewater is growing nowadays, because of the rising cost of water and because of environmental pollution, and becoming an important water source for agricultural irrigation. The aim of this study was to decrease the biological oxygen demand (BOD5), chemical oxygen demand (COD) and total Suspended solids (SS) of urban wastewater the city of Kenitra by activated sludge, in first time focusing on determining the best activated sludge pilot plant operating conditions after in order to confirm the performance of the station, a long duration of the pilot purification test was conducted. The pilot operating conditions correspond in terms of mass load to a low load are: Flow 0.5l / h; Oxygenation rate 60%; 100% recycling of the activated sludge; Aeration tank agitation 100 rev/min. Also, a sustained performance during the trial period, during which, the station operated in low mass load, producing water with BOD5, COD and SS, which is respectively (90.20%, 89. 79% et 97.67%) much lower levels in Moroccan discharge standards. The final treated wastewater could be reused water for agricultural irrigation.

Background: Since December 2019 the world has experienced a significant spread of the Covid-19 pandemic. The purpose of this study is to investigate the impact of the coronavirus disease (COVID-19) on the mental health of the population. Method:This cross-sectional study was conducted in Morocco and was administered to a sample of 702 respondents. The subject was assessed using a questionnaire containing the following information: Personal demographic characteristics, knowledge and awareness of COVID-19 outbreak, Attitude towards COVID-19 outbreak, Behavioral change in relation to COVID-19 outbreak, Patient Health Questionnaire (PHQ-4) screening questions for anxiety and depression, and finally a questionnaire related to people at risk of psychological harm from social isolation during the COVID-19 pandemic, data collection began three weeks after confinement began and lasted for five weeks, from April 10 to 08 Mai.Results: 702 participants responded to the survey. The descriptive analysis of the database showed that the majority of respondents were male (69.3%), aged 20 to 30 years (46.15%), with university diploma (61.25%) and employed (63.53%).Knowledge differed considerablyby level of education; however, Attitude differed significantly according to gender and educational level. Correlations between the knowledge, attitude, behavioral behavioural, PHQ-4 and the psychological harm score shows that the variables "attitude, behavioural and Psychological harm" are significantly correlated with the PHQ-4 score, the higher the latter are the greater the last is high.In addition, the "Knowledge" variable is also significantly correlated. The greater the knowledge, the smaller the PHQ-4 score. Conclusion:The covid-19 pandemic is a public health problem

Objective: Review compliance with preventive measures to limit the spread of covid-19 during the containment period in Morocco. Method: An online questionnaire consisting of questions covering several areas: demographic data, knowledge of Covid-19, ports of contamination and precautionary measures. Results: A total of 352 participants responded to the survey, of which 69.3% were male, 48.6% were between 20 and 30 years of age and 37.2% were students. The Rabat-Salé-Kénitra region had the highest turnout with 59.9%. 20.98% of participants cover their mouths when coughing, 90.52% use liquid soap to wash their hands, 58.09% still wear face masks and 64.27% were satisfied with the prevention measures initiated by the Moroccan health authorities. Conclusion: Based on the results obtained and in the absence of treatment for this contagious disease, the best method of protection for you and your loved ones is to respect the measures and barrier gestures.