Study of the Wastewater Purifying Performance in the M’Zar Plant of Agadir, Morocco

Abstract

In order to preserve the quality of water masses and reduce the deterioration of the natural environment, alternative water supplies should be required. The reuse of treated wastewater seems to be a good alternative in agriculture. Our study focuses on the characterization of the physico-chemical effluents (pH, EC, Turbidity, SS, COD, and BOD 5 ) in treated wastewater of M'zar plant in Agadir during one-year cycle. It aimed to study the evolution of these parameters over five years since 2006 in compliance with discharge standards in the natural environment and concerning the safety of water for irrigation. It has been shown that the quality and quantity of wastewater depends essentially on the amount of water consumed by the population, the intensity of industrial activities and tourism according to the seasons. The removal percentage of particulate pollution and oxidizable parameters already mentioned were very satisfactory and range from an average of (97 to 99%). The rate of the Electrical Conductivity (EC) does not change between input and output of plant. The treated wastewater characterized by a high EC (between 3 and 4 dS/m) and it can be a problem for reuse in irrigation.

Physico-chemical and microbiological quality of M’Zar wastewater treatment plant effluents and their impact on the green irrigation of the Golf course

“…Physico-chemical analyses of the water samples Table 1 highlights the obtained physico-chemical values of water samples W1 and W2. The average values of the physicochemical variables of wastewater treated and reused by the Golf Ocean show that these parameters are provided in an acceptable quantity in accordance with the standards of the irrigation water (WHO 1989;CNS 1994) and in agreement with similar studies (El Addouli et al 2009;Mouhanni et al 2013). Both samples W1 and W2 have the same trend in the course of the sampling year, the conductivity, COD, DBO5 increases as a function of the water temperature (Fig.…”

“…This can be explained by the increase of the salts in the samples in the high-temperature months (summer): the increase of salt ions is responsible of the increase of the conductivity in both samples; inversely, the opposite happens in the lowtemperature months. High levels of salinity can also be explained by mixing domestic wastewater with industrial effluents during fish transformation process (Mouhanni et al 2013). The specific electrical conductivity which is brought in excessive quantity and corresponds to the limit value of the direct discharge in the receiving environment.…”

“…In the south of Morocco, the Agadir region is an agricultural zone characterized by limited water resources, especially since liquid wastewater discharges throughout the Souss basin amount to 25% million m 3 /year. Consequently, the use of treated wastewater in agriculture would not only preserve water resources, but also significantly reduce the misuse of fertilizers (Mouhanni et al 2013).…”

Assessment of Adaptive Capacity of Leaves and Roots of Golf Grass Plant Irrigated by Reclaimed Wastewater

“…A great number of publications have recognized its benefits. In this context, the present research was conducted with the aim of studying the effects of irrigating golf grass with municipal reclaimed water, containing higher concentration of soluble salts than groundwater, on growth of leaves, roots (Hind Mouhanni et al, 2013). Similar results were obtained in the USA by Zalesny and al., in 2008 studied the sodium and chloride accumulation in leaf, woody and root tissues of Populus after irrigation with Landfill leachate and fertilized well water (control).…”

“…All varieties irrigated with RWW have a smaller percentage of WC compared to that of GW. This result improve that the RWW irrigation provide an evolution of vegetative growth appeared by the best production of vegetative matter and less water retention unlike irrigation by GW (Mouhanni Hind, 2011, 2008, 2013Chenini et al, 2002;Eran segala et al, 2010;Yi et al, 2011;Noelia Quevedo, 2012). (WC) is calculated as the ratio of the mass of water contained in the sample and the fresh weight of the sample: FWC (%) = (FM-DM) .100/FM (Hind mouhanni, 2012).…”