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Bacteriological and physicochemical quality of treated wastewater of the Mzar treatment plant
- Source :
- Applied Water Science, Vol 9, Iss 4, Pp 1-8 (2019)
- Publication Year :
- 2019
- Publisher :
- SpringerOpen, 2019.
-
Abstract
- In order to use purified wastewater on watering green spaces of Agadir city, we conducted this study to assess the bacteriological and physicochemical quality of treated wastewater in Mzar treatment plant. To realize these objectives, we analyzed four types of waters: raw water (RW), decanted water, purified water and purified water treated by the ultraviolet radiation (PWUV). The biologically analyzed parameters are fecal coliforms (FC) and fecal enterococci (FE). The physicochemical parameters are: pH, electrical conductivity, chemical oxygen demand (COD), five-day biological oxygen demand (BOD5) and total suspended solids (TSS). The results showed a high level of bacterial contamination in all types of waters, and the average loads of FC were between 4.71 × 106 CFU/100 mL (RW) and 1.45 × 103 CFU/100 mL (PWUV), while loads of FE were between 2.62 × 105 CFU/100 mL (RW) and 7.92 CFU/100 mL (PWUV). The physicochemical parameters show a pH close to neutrality and a high electrical conductivity (3261 μS/cm) in PWUV. In all stages of wastewater treatment, values of COD, BOD5 and TSS were under the limit values recommended by Moroccan standards. Except for the electrical conductivity and FC, all the studied parameters were under the limit values requested by the Moroccan standards. The microbiological quality of PWUV is unstable, and if these waters are reused, they can affect the microbiological and physicochemical quality of green spaces and groundwater.
- Subjects :
- Biochemical oxygen demand
lcsh:TD201-500
Thermotolerant coliforms
0208 environmental biotechnology
Chemical oxygen demand
02 engineering and technology
Fecal enterococci
010501 environmental sciences
Wastewater
Pulp and paper industry
01 natural sciences
Purified water
020801 environmental engineering
Fecal coliform
Morocco
lcsh:Water supply for domestic and industrial purposes
Physicochemical parameters
Green spaces
Environmental science
Sewage treatment
Raw water
0105 earth and related environmental sciences
Water Science and Technology
Total suspended solids
Subjects
Details
- Language :
- English
- ISSN :
- 21905495 and 21905487
- Volume :
- 9
- Issue :
- 4
- Database :
- OpenAIRE
- Journal :
- Applied Water Science
- Accession number :
- edsair.doi.dedup.....500cf8be942134537977c0af088a2768