Characterization of sludge waste products from wastewater treatment plant of Khenifra city in Morocco

Yıl 2019, Cilt: 2 Sayı: 2, 73 - 79, 30.06.2019

Aadraoui Mohamed Rais Jamila Elbaghdadi Mohamed Ouigmane Abdellah Mohamed Mechadi

https://doi.org/10.35208/ert.435663

Cited By: 2

Öz

To promote the utilization of sewage
sludge as alternative building materials, a study was carried out to examine
the characteristics of sewage sludge from wastewater treatment plant of
khenifra city, Morocco. Experiments were performed for determining the
mineralogical composition, chemical properties, loss of weight, the rate of the
calcium carbonate and moisture. Furthermore, the geotechnical parameters deal
with the Atterberg limits, water content and  
Sand equivalent of the sewage sludge material. The purpose of this paper
is to present the available information on the various components of sewage
sludge to explore the possibility of exploiting this waste in building
materials

 

Results show that sewage sludge has
neutral pH value around 6.93 and contains organic matter.  Moreover, the sludge is composed of a
significant amount of oxides and metals. The value of net calorific value (NCV)
is 1888.91 Kcal kg^-1. As well as, the mineralogical composition of
sludge has been determined by X-rays diffraction (XRD) show the presence of
quartz (SiO₂), hematite (Fe₂O₃), aluminum
oxide (Al₂O₃) and calcite (CaO₃).The result of
the geotechnical properties of sewage sludge obtained indicates a very high
value for a liquid limit of 126%, a plastic limit of 100% and the plasticity
index of 25% and 128% water content.

Based on the data obtained from the
characteristics of sewage sludge produced by wastewater treatment plant in the Khenifra
city, the utilization of sewage sludge into building materials such as  in brick making, ceramics making and  in the manufacture of cement are possible,
because sludge composition is similar to the raw to construction materials.

 

Anahtar Kelimeler

Characterization, Recycling, Sewage sludge, Wastewater treatment plant

Kaynakça

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