Sewage in Algerian Oasis: Comparison of the Purifying Efficiency of two Processes (WWTP and WWTAS)

Bachi, Oum Elkheir; Halilat, Mohammed Tahar; Bissati, Samia

doi:10.1016/j.egypro.2015.07.811

Cited by 4 publications

(4 citation statements)

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“…Compared to the results of Bachi et al [18,19], the average values for the period 2011-2013 were a bit low compared to those for the period 2011-2018 for the aerated lagoon. On the other hand, the opposite occurred in the activated sludge station where the values were important in 2011-2013.…”

Section: Phosphorus Pollutioncontrasting

confidence: 87%

“…Still comparing with the results of Bachi et al [18,19], the average nitrite values for 8 years were low compared to the period between 2011 and 2013 for the three processes but with a big difference for the aerated lagoon process. For nitrate, the average values of 8 years at the end of the aerated lagoon system were higher than those of 2011-2013.…”

Section: Nitrogen Pollutionsupporting

confidence: 57%

“…Compared to research of Bachi et al [18,19] on station data between 2011 and 2013, the average values of nitrites and nitrates during the 8 years have the same tendencies: maximum values observed in the aerated lagoon process and minimum for the plants bed process for nitrite. For nitrate, it was the opposite, with maximum average values observed in the plants bed process and the minimum in the aerated lagoon.…”

Section: Nitrogen Pollutionmentioning

confidence: 45%

“…Several researchers around the world have studied the performance of wastewater treatment processes to assess their effectiveness and determine the fate of treated wastewater [13][14][15][16][17]. For our regions of Ouargla and Touggourt, research studies on the performance of the various wastewater treatment processes mentioned began with the construction of wastewater treatment plants (WWTP) as part of a mega-project to fight water upwelling [18,19].…”

Section: Introductionmentioning

confidence: 99%

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Wastewater Treatment Performance of Aerated Lagoons, Activated Sludge and Constructed Wetlands under an Arid Algerian Climate

et al. 2022

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Water pollution reduces the availability of fresh water, especially in arid areas suffering from water stress, and also adversely affects soil, vegetation and environmental processes. Wastewater treatment processes aim to reduce environmental degradation and increase water availability by improving the quality of wastewater to a standard suitable for irrigation. This paper compares the performance of three wastewater treatment processes: (i) aerated lagoon (AL), (ii) activated sludge (AS), and (iii) constructed wetland (plant beds, PB) under the arid climate of Algeria. The statistical analysis focused on the comparison between the removal rates of the physical (SS) and biological pollution (BOD5 and COD) parameters in the three stations during 8 years of operation. Obtained results show that the maximum removal rates were observed in the AS process and the minimum were in the AL process. The comparison between the removal rates for a given parameter has shown that there is a significant difference between the AL process on the one hand and the AS and PB processes on the other hand. For the last two processes, AS and PB, there is a difference, but it is not statistically significant. For the values of the parameters of wastewater leaving the three systems, results showed that there is a seasonal variation in the average values of the parameters (temperature effect) and that with the exception of orthophosphate, the values recorded are, for the most part, below the values of Algerian discharge standards, WHO standards and FAO standards.

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Section: Phosphorus Pollutioncontrasting

confidence: 87%

Section: Nitrogen Pollutionsupporting

confidence: 57%

Section: Nitrogen Pollutionmentioning

confidence: 45%