Benefits and Risks of Liquid Sewage Sludge Recycling in Agricultural Spreading – A Case Study of WWTP of Skhirat, Morocco

• Autorzy: Achkir Abdelmajid , Aouragh Abdelhakim , El Mahi Mohammed , Lotfi El Mostapha , Kabriti Mohamed , Abid Abdesalam , El Moussaoui Tawfik , Yagoubi Maâmar

Identyfikatory

DOI

10.12911/22998993/156130

• Języki publikacji: EN

Abstrakty

EN

The sewage sludge recycling as an agricultural land resource has received a great deal of attention worldwide. This practice has highly increased because of ever-increasing municipal wastewater production and the awareness of its fertilizing potential as amendment resources. However, there is a concern about land spreading linked mainly to health associated risks due to the presence of diverse pollutants. Thus, sewage spreading management is a key factor the guarantees benefits and avoids risks. The present work aimed to investigate the benefits and risks of sewage sludge (SS) application on agricultural land. To this end, physicochemical main parameters and bacteriological indicators, fecal coliform (FC) and fecal streptococcus (FS), of the sewage sludge generated form WWTP of Skhirat, Morocco, were performed during the period 2018–2019. The obtained results of physicochemical parameters reveal high concentration of organic matter in SS, which reach 96.3 mg/l, and in nutrients. Indeed, total Kjeldahl nitrogen TKN reaches a maximum of 3791 mg/l, potassium K⁺ reaches 58.71 mg/l. In addition, the average content of FC and FS are around 5.40 CFU/ml and 5.85 CFU/ml, respectively, whereas total phosphorus reaches 508.25 mg/l. In addition, concentrations of micronutrients such as Cl^-, SO₄^2-, Ca²⁺, Mg²⁺, and Na⁺ were high, which is interesting and could benefit for both soils and plant. Furthermore, this sewage sludge contains high concentration of heavy metals, mainly zinc and copper which could limit reuse in land spreading. The obtained results were compared to the applied standards and directives established within the framework of the agricultural spreading.

Słowa kluczowe

EN

sewage sludge; WWTP; wastewater treatment plant; Skhirat; Morocco; liquid sludge; physicochemical parameter; bacteriological parameter; heavy metals; agricultural

• Wydawca: Polskie Towarzystwo Inżynierii Ekologicznej ; Lublin University of Technology
• Czasopismo: Journal of Ecological Engineering
• Rocznik: 2023
• Tom: Vol. 24, nr 1
• Strony: 277--288
• Opis fizyczny: Bibliogr. 47 poz., rys., tab.

Twórcy

autor

Achkir Abdelmajid

• Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, CERN2D, ENSAM, Mohammed V University in Rabat, 10100 Morocco

• https://orcid.org/0000-0003-3683-5897

autor

Aouragh Abdelhakim

• Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, CERN2D, ENSAM, Mohammed V University in Rabat, 10100 Morocco

autor

El Mahi Mohammed

• Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, CERN2D, ENSAM, Mohammed V University in Rabat, 10100 Morocco

autor

Lotfi El Mostapha

• Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, CERN2D, ENSAM, Mohammed V University in Rabat, 10100 Morocco

autor

Kabriti Mohamed

• National Laboratory for Studies and Pollution Monitoring-Ministry of Energy, Mines and Environment, Department of Environment, Rabat, Morocco

autor

Abid Abdesalam

• National Laboratory for Studies and Pollution Monitoring-Ministry of Energy, Mines and Environment, Department of Environment, Rabat, Morocco

autor

El Moussaoui Tawfik

• Resources Valorization, Environment and Sustainable Development Research Team (RVESD), Department of Mines, Mines School of Rabat, Ave Hadj Ahmed Cherkaoui – BP 753, Agdal, Rabat, 53000 Morocco

• https://orcid.org/0000-0002-1828-8335

autor

Yagoubi Maâmar

• Laboratory of microbiology, Faculty of Medicine and Pharmacy Rabat, Mohammed V University, Rabat, Morocco

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).