Browsing by Author "Mamine, N"

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    Survey of the Physico-chemical and Parasitological Quality of the Wastewaters Used in Irrigation (Souk Ahras, North-East of Algeria)
    (2020-02-23) Mamine, N; Khaldi, F; Grara, N.
    The reuse of wastewaters of urban communes of Khmissa (Site 1), Hannancha (Site 2) and Souk Ahras (Site 3) rejected in the Medjerda wadi of Souk Ahras region (North-East Algeria) for agricultural purposes in the far North-East of Algeria is accompanied by health and environmental risks, the evaluation of which requires physico-chemical and parasitological characterization. Biweekly samples were taken from March to August 2019 at the three studied sites wastewaters discharges. The results revealed that the waters studied are characterized by high salt contents, negative redox potential and high levels of turbidity (97.28 ± 18.12 to 111.57 ± 13.11 NTU ), suspended matter (TSS) (351.6 ± 15.52 to 397.33 ± 20.6 mg.L־1), ammonium (8.51 ± 1.94 to 11.19 ± 3.18 mg.L־1) and orthophosphates (3.69 ± 1.40 to 5.29 ± 1.78 mg.L־1), high values in BOD5 (120.62 ± 43.17 to 170.25 ± 32.34 mg.L־1of O2), and COD (286.73 ± 39.65 to 358.9 ± 32.81 mg.L־1of O2) as well as the presence of some metallic trace elements such as cobalt (Co) and cadmium (Cd). Parasitological analysis shows high contamination of these irrigation waters by helminthes eggs, which exceed widely the standards of use of waste water in agriculture. The application of Principal Component Analysis (PCA) allowed to conclude that the waters of Medjerda wadi receive urban wastewater from surrounding areas and should not be reused directly in agriculture before being subjected to a processing, in order to improve their quality by meeting the required standards.
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    THE USE OF MACROPHYTE TYPHA LATIFOLIA FILTERS IN THE TREATMENT OF WASTEWATERS OF MEDJERDA RIVER, IN SOUK-AHRAS CITY (NORTH-EAST ALGERIA)
    (2019-01-01) Mamine, N; Grara, N; Khaldi, F.
    The present study was aimed to test the purifier capacities of a helophyte plant, and herein the cattail (Typha latifolia) has been used to purify the raw wastewaters through monitoring the contamination physico-chemical and parasitological indicators following various stay periods. The experimental pilot scheme is composed of three planted trays of young Typha stem. Each one was retained, respectively a treatment period of 7, 14 and 21 days. The supply of planted systems are exclusively occurred through the release of wastewaters in Medjerda river (discharge of river).The results have shown that these helophytes lead to the neutralization of pH, along with decrease in electrical conductivity of raw wastewaters. The monitoring of the purifying performances of the three systems shows that the third planted tray ensure an important elimination of the total suspended matter (TSS) at 97.6 % and the turbidity (92.4 %), which showed to be efficient in removing the organic charge with a reduction in BOD5 (90.1 %), COD (92.66 %) and the nutrients (NH4+: 88.54 % and PO43-: 91.9 %). Moreover, the concentrations of these chemicals do not exceed the national (J.O.R.A) and international (WHO, FAO) standards for the irrigation water. Regarding the parasite load, the three planted trays lead to the elimination of the total parasitic helminth eggs