Pollution parameters and identification of performance indicators for wastewater treatment plant of Medea (Algeria)

Abstract

The sanitation system in Algeria requires a mastery of the functioning of the collection network and treatment using performance indicators that identify gaps and to develop solutions for better waste-water management. This work aims to identify the performance indicators that are chosen on the basis of the problems often encountered. The referred performances concern the problems related to clear parasites waters and some that highlight the phenomena of sedimentation-erosion in the net-work of Medea city. For the WWTP, we are interested in the plant hydraulic and treatment capacity, the bacterial metabolism, the treatment yield, the correlations between pollution parameters and the energy consumption. The results showed that the dilution rate of wastewater, which is caused by the clear parasites waters, requires significant care at the sewerage network. The imbalance into nutrients relating to bacterial metabolism can be an obstacle at the level of biological treatment. For high ratios TSS/COD and TSS/BOD 5 that translate a pollution at particulate character, a quantitative study would be required in particular to evaluate the influence of collection networks on the quality of domestic sewage. The high values of the electrical energy necessary for the elimination of recorded pollution require to perform a diagnostic analysis on the installation.

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“…A significant correlation was observed between dysfunction parameters. This funding's was also mentioned by other authors (Karefa et al, 2017;Rekrak & Fellah, 2020;Salama et al, 2020). They demonstrated the relationship between the Dilute Sludge Volume Index (DSVI) and the density of filamentous bacteria (FI).…”

Assessing the Quality of Treated Wastewater for Irrigation: A Case Study of Ain Sefra Wastewater Treatment Plant

“…Our findings show the BOD 5 levels in the treated water from the Ain Sefra WWTP are comparable or lower than other studies in Algeria. For example, a study conducted in Medea's WWTP reported BOD 5 levels reaching a maximum value of 352.33 mg/L in the treated effluent, which exceeds our findings [53]. WWTPs worldwide typically report BOD 5 levels between 10-50 mg/L [54][55][56].…”

Systematic Modeling of Municipal Wastewater Activated Sludge Process and Treatment Plant Capacity Analysis Using GPS-X

“…The COD/BOD 5 ratio of raw domestic wastewaters has usually been reported within the range of 1.25 and 2.50 [38]. Wastewater having the COD/BOD 5 ratio below 2 can easily be biodegraded while the biodegradability of sewage is susceptible to be limited if the COD/BOD 5 > 3 [48][49][50][51]. With the mean COD/BOD 5 of 2.23 for the DWWTP, Figure 9a suggests that the DWWTP performance could be sustained for a quite appreciable range of COD/BOD 5 ratio.…”

“…Low BOD 5 /TN ratio in an influent leads to a quick carbon deficit and an uneven nitrification and denitrification process due to the competition between denitrifying bacteria and other heterotrophs substrate [20,52]. On the other hand, with a lower COD/TKN ratio, ASPs could be in more carbon-limited conditions for some domestic wastewaters, which might be inadequate to attain complete denitrification [48]. However, this is not the case for DWWTP having an average value of 7.89, which is manifested in the high denitrification of by the DWWTP.…”