Contribution to the study of the effect of urban wastewater on the degradation of ground water quality and to the treatment by filtration on dune sand of the city of Bechar (Algeria)

Maazouzi, Abdelhak; Kettab, Ahmed; Badri, Amirreza; Zahraoui, B.; Kabour, A; Chebbah, Lynda

doi:10.5004/dwt.2011.1637

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Polyphosphates are then released during rinsing, they have a tendency to hydrolyse into phosphates in wastewater [REJSEK 2002]. Phosphates also participates in the first line of the eutrophication process, a phenomenon with environmental consequences (algal growth) and health consequences (release of algal toxins) [FESTY et al 2003], these values exceed without exception the limit of irrigation water set at (<0.94 mg•dm -3 ) [OMS 1989] and the limit of discharge into a receiving environment set at 2 mg•dm -3 [Décret exécutif n° 06-141] except for sampling point S4, according to MAAZOUZI et al [2011]. It is a eutrophic environment.…”

Section: Phosphatesmentioning

confidence: 99%

Physical-chemical characterisation of the urban wastewater – case study of the Boumerdes region, North – Algeria

Baziz,

Maazouzi,

Lachache

2022

Journal of Water and Land Development

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The objective of this study is to assess the physical-chemical quality of urban wastewater from the city of Boumerdès, in northern Algeria with regard to the threshold values for irrigation or their discharge in aquatic ecosystems. Five sampling points were carried out of the study area in April 2017. The results obtained of physicalchemical parameters indicating pollution show that the water course is exposed to pollution mainly of organic origin. It's expressed by a high maximum value according to Algerian and World Health Organisation standards: chemical oxygen demand (COD 886 mg O 2 •dm -3 ), biochemical oxygen demand (BOD 5 490 mg O 2 •dm -3 ), nitrate (NO 3 -73.09 mg•dm -3 ), nitrite (NO 2 -6 mg•dm -3 ), ammonium (NH 4 + 23 mg•dm -3 ) and phosphates (PO 4 3-7.3 mg•dm -3 ).The COD to BOD 5 rate of 1.8, show that the effluents must be treated before being discharged into the receiving environment. However, it is lower than 2, which makes them easily biodegradable and can be treated by a biological system such as a natural lagoon. It shows also a diversified origin of the pollution. It is predominantly domestic origin, it could have an adverse effect on public health, presenting a risk of environmental eutrophication, contamination of soil and water resources.The physical-chemical characterisation of the urban wastewater shows that they are quite loaded and present a pollution in nitrogenous compounds, a treatment is requested before the direct discharge to the receiving environment or their reuse in the irrigation.

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Section: Phosphatesmentioning

confidence: 99%

Physical-chemical characterisation of the urban wastewater – case study of the Boumerdes region, North – Algeria

Baziz,

Maazouzi,

Lachache

2022

Journal of Water and Land Development

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“…The ratio of biodegradability varied between 0.15 and 0.19 revealed that the leachate from the landfill of Bizerte presents a high concentration of non-biodegradable organic matter in relation to the biodegradable ones. The metallic pollutants are distinguishable from the other chemical pollutants by a weak biodegradability and an important ability of bioaccumulation along the tropical chain, which could be harmful to the population as well as to the fauna and flora [24]. The concentrations of pollutants characteristic of the raw landfill leachate exceed the standardized indices and this interdicts their discharge into natural receivers and sewers.…”

Section: Characterization Of Landfill Leachatementioning

confidence: 99%

Removal of organic and nitrogen compounds from landfill leachates by coagulation, Fenton, and adsorption coupling processes

Turki¹,

Boujelben²,

Bakari³

et al. 2021

Desalination and Water Treatment

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This paper aims at assessing organic matter and nitrogen compounds removal as well as identifying the organic compounds present in the leachate treated by an integrated physico-chemical system (coagulation-Fenton oxidation (FO)-adsorption). The raw and treated leachate were analyzed for the followings parameters: chemical oxygen demand (COD), biochemical oxygen demand (BOD 5 ), and ammonium nitrogen (N-NH 4 + ). The adsorption treatment was based on powdered zeolite 4 A (PZ) and the commercially powdered activated carbon (PAC). The identification of organic compounds using gas chromatography coupled to the mass spectrometry (GC-MS). The raw leachate is characterized by high concentrations of organic load expressed in COD (16,200 mg O 2 L -1 ) and a high ammonium nitrogen load (1,623-2,120 mg L -1 ). The removal of leachate treatment was defined for raw and treated leachate. PZ adsorption removed the highest nitrogen pollutants then PAC adsorption. In the coagulation-FO-PZ adsorption, the removal efficiency reached 93% for N-NH 4 + , 97% for COD, and 92% for BOD 5 and during coagulation-FO-PAC adsorption, the removal efficiency was equal to 59% for N-NH 4 + , 98% for COD, and 95% for BOD 5 . GC-MS analysis showed that both integrated systems studied promoted a high reduction of organic compounds from leachate (99%).

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“…Hachemi and Amarchi (2012) show that water quality of Oued Meboudja in the town of Annaba is non-conform to be used directly in all domains because the domestic wastewater rejected directly in this watercourse is rich with NH 4 + and PO 4 3there by affecting water quality. Maazouzi et al (2011) show that wastewaters of the river of the town of Bechar (South-West of Algeria) prove to be globally enough loaded and constitute a true threat for the environment of the region, notably for the underground waters. The solution is to perform a pre-treatment system in order to protect the water table and the ecosystem as a whole.…”

Section: Introductionmentioning

confidence: 99%

Feasibility of sand filters to wastewater treatment in rural areas in Algeria: experimental study

Kherouf

Bouteldja

Maoui

et al. 2019

IJEWM

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The treatment of domestic wastewater by sand filters is a very interesting alternative technique to collective sewerage in rural areas. In order to assess the accuracy of this technique in Algeria, a feasibility study based on a statistical survey and an experimental study is carried out. The aim of the statistical survey is to determine the potential for the application of this technique by evaluating the rate of connection to collective sewerage networks and the existence of a sewage treatment system in rural areas. The purpose of the experimental study is to assess the suitability of the local sands for this type of process. In this paper the treatment performance over time of two different sands (medium and coarse) are evaluated. The chemical analyses of wastewater and filtered water showed a removal ranges between 57% and 74% for medium sand and between 7% and 49% for coarse sand.

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Contribution to the study of the effect of urban wastewater on the degradation of ground water quality and to the treatment by filtration on dune sand of the city of Bechar (Algeria)

Abstract: Contribution to the study of the effect of urban wastewater on the degradation of ground water quality and to the treatment by filtration on dune sand of the city of Bechar (Algeria), Desalination and Water Treatment, 30:1-3, 58-68To link to this article: http://dx.

Cited by 7 publications

References 9 publications

Physical-chemical characterisation of the urban wastewater – case study of the Boumerdes region, North – Algeria

Physical-chemical characterisation of the urban wastewater – case study of the Boumerdes region, North – Algeria

Removal of organic and nitrogen compounds from landfill leachates by coagulation, Fenton, and adsorption coupling processes

Feasibility of sand filters to wastewater treatment in rural areas in Algeria: experimental study

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