Physic-Chemical Evaluation of Urban Wastewater of the Town of Sidi Kacem

Abstract

The goal of this study is the evaluation of pollution by the physic-chemical characterization of urban wastewaters discharged in the river R'dom of the town Sidi Kacem. The motivation of this study is multiple firstly to give an answer to the choice of methods of treatment of raw sewage and secondly to raise awareness of the pollution of the river R'dom who is a source of irrigation in the region. The physic-chemical analyses were carried out on the level of the collector 1 (domestic collector of the Zaouia District) and that of collector 2 (domestic collector of the allotments Thami Amar, road of Tangier and Saada), during the year 2012 at the same time "in situ" and at the Laboratory of Environment (Faculty of Sciences Kenitra). The polluting load out of organic matter (DBO 5 , DCO, MES), out of mineral matter (Cl − , Ca 2+ , Mg 2+ , K + , 3 4 PO − , Na +) and out of nitrogenized matter (3 NO − , 3 NH + , Nitrogenize total) was more important, except for the temperature and of the pH which are in conformity with the Moroccan standards of rejection. Ratios DCO/DBO 5 , DBO 5 /DCO and MES/DBO 5 inform about the biodegradability of these effluents and permitted choice of the suitable treatment process. Indeed, results obtained show that the domestic effluents exceed the national standards of rejection, which requires an intervention of the competent jurisdictions in order to preserve the public health, to protect the environment and install an efficient sewage treatment plant to ensure a sustainable development.

Drinking water sludge of the Moroccan capital: Statistical analysis of its environmental aspects

“…In this study, sludge records a mean SM concentration of 39 g/L, with a minimum concentration of 6.7 g/L and a maximum concentration of 100.7 g/L. These values fall well above the Moroccan SM limit of 50 mg/L [20]. High VSS contents were also recorded during summer and autumn, most likely due to the concurrent flooding of the Sidi Mohammed ben Abdallah dam.…”

“…The recorded water temperature can generally be considered moderate, as it falls between 14 • C and 19 • C. Both of these different temperatures fall below 30 • C, a temperature that represents the limiting value of direct discharge into the receiving environment. Likewise, temperatures under 35 • C generally represent limits for irrigation water [20].…”

Characterization of Alum Sludge from Surabaya Water Treatment Plant, Indonesia

“…Together with the characteristics of alum sludge from Bouregreg WTP in Morocco, the average VS value was the highest (12,696±263.3 mg/L) ( Table 3). This might be caused by heavy industrial and domestic waste pollution in sources [El Rhaouat et al, 2014]. The ratio of VS/TSS of the sludge sample is 1.01.…”

“…The BOD/COD ratio value provides an important indication of the pollution origin of the raw water source. This value can also be used to determine the proper technology for sludge treatment [El Rhaouat et al, 2014].…”

Water quality affects the structure of copepod assemblages along the Sfax southern coast (Tunisia, southern Mediterranean Sea)

“…pollution of a chemical origin (Ohwoghere-Asuma and Aweto 2013;El Rhaouat et al 2014;Jamwal et al 2015) whereas COD/ BOD 5 ratios . 3 indicate an organic load of a low biodegradability (Drira et al 2016).…”