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Research paper thumbnail of Treatment of the OUED SMAR town landfill leachate by an electrochemical reactor

Desalination, 2011

The electrocoagulation process is an effective, fast and economic technique for the treatment of ... more The electrocoagulation process is an effective, fast and economic technique for the treatment of water and wastewater. In this paper, electrocoagulation (EC) has been used for the removal of COD, total nitrogen, color, turbidity and bacteria from the Oued Smar (north of Algeria) town landfill leachate, characterized by high chemical oxygen demand, high concentration of nitrogen and black color. Firstly, the effects of process variables such as inter-electrode distance, magnetic stirring speed, current density and electrode material on the treatment efficiency, sludge volume production, pH and temperature evolution during the EC process were studied. Secondly, energy consumption and operating costs were calculated with aluminium and iron electrodes under the same experimental conditions. The findings, in this study show that an increase in current density (125-500 A/m 2) enhanced the speed of treatment significantly, the inter-electrode distance was 2.8 cm and the stirring speed was 150 rpm for the studied leachate. The removal efficiencies of COD, total nitrogen, color and turbidity were respectively 70%, 24%, 56%, and 60% with Al electrodes and 68%, 15%, 28%, and 16% with Fe electrodes. Electrical energy consumption and operating cost with Al electrodes were 0.

Research paper thumbnail of Water quality assessment in Réghaïa (North of Algeria) lake basin by using traditional approach and water quality indices

kuwait journal of science, 2020

Reghaia town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. Th... more Reghaia town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. The aim of this study is to assess water quality in Reghaia lake basin by determining current status, temporal evolution and apportionment of pollution sources. Three samplings were carried out in fourteen stations covering the lake and its principal tributaries. Sixteen physical-chemical parameters and three microbiological parameters were analyzed. Surface Water Quality Evaluation System (SW-QES) was used to visualize the temporal evolution of available data from 1978 to 2017. Water quality index (WQI) was used to assess the global water quality for irrigation purpose and its spatial variation across the basin. Organization for Economic Co-Operation and Development (OECD) international classification and trophic state index (TSI) were used to evaluate trophic category of the lake. Organic pollution index (OPI) and microbiological quality index (MQI) were used to establish pollution maps ...

Research paper thumbnail of Treatment of the OUED SMAR town landfill leachate by an electrochemical reactor

Research paper thumbnail of Water quality assessment in Réghaïa (North of Algeria) lake basin by using traditional approach and water quality indices

Réghaïa town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. Th... more Réghaïa town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. The aim of this study is to assess water quality in Réghaïa lake basin by determining current status, temporal evolution and apportionment of pollution sources. Three samplings were carried out in fourteen stations covering the lake and its principal tributaries. Sixteen physical-chemical parameters and three microbiological parameters were analyzed. Surface Water Quality Evaluation System (SW-QES) was used to visualize the temporal evolution of available data from 1978 to 2017. Water quality index (WQI) was used to assess the global water quality for irrigation purpose and its spatial variation across the basin. Organization for Economic Co-Operation and Development (OECD) international classification and trophic state index (TSI) were used to evaluate trophic category of the lake. Organic pollution index (OPI) and microbiological quality index (MQI) were used to establish pollution maps of the study area. The lake presents excessive pollution since the 1970s. BOD5/COD ratio (0.1) recorded in 2017 indicates a very low biodegradability of Réghaïa lake waters. The value of Canadian Council of Ministers of the Environment-water quality index (CCME-WQI) (14.31) indicates poor water quality. The values of Weighted arithmetic-water quality index (WA-WQI) are extremely high (>4000) which indicates unsuitable water quality for irrigation purpose. Hypertrophic nature of the Réghaïa lake was identified (TSI > 80) and confirmed by the OECD classification. Spatial distribution of pollution indicators shows that Réghaïa river and ElBiar river are the most important pollution sources. Calculations of WA-WQI with and without Coliforms indicate that Réghaïa river is the most important microbial pollution source. A slight decrease in organic pollution and remarkable improvement in microbiological quality was observed at the outlet of the lake. According to these results, sewage discharged without or with insufficient treatment is the main pollution source of the Réghaïa lake which has been a receiving environment for many years and continues to be polluted today and tomorrow If we do not react effectively by stopping the pollution sources.

Research paper thumbnail of Treatment of the OUED SMAR town landfill leachate by an electrochemical reactor

Desalination, 2011

The electrocoagulation process is an effective, fast and economic technique for the treatment of ... more The electrocoagulation process is an effective, fast and economic technique for the treatment of water and wastewater. In this paper, electrocoagulation (EC) has been used for the removal of COD, total nitrogen, color, turbidity and bacteria from the Oued Smar (north of Algeria) town landfill leachate, characterized by high chemical oxygen demand, high concentration of nitrogen and black color. Firstly, the effects of process variables such as inter-electrode distance, magnetic stirring speed, current density and electrode material on the treatment efficiency, sludge volume production, pH and temperature evolution during the EC process were studied. Secondly, energy consumption and operating costs were calculated with aluminium and iron electrodes under the same experimental conditions. The findings, in this study show that an increase in current density (125-500 A/m 2) enhanced the speed of treatment significantly, the inter-electrode distance was 2.8 cm and the stirring speed was 150 rpm for the studied leachate. The removal efficiencies of COD, total nitrogen, color and turbidity were respectively 70%, 24%, 56%, and 60% with Al electrodes and 68%, 15%, 28%, and 16% with Fe electrodes. Electrical energy consumption and operating cost with Al electrodes were 0.

Research paper thumbnail of Water quality assessment in Réghaïa (North of Algeria) lake basin by using traditional approach and water quality indices

kuwait journal of science, 2020

Reghaia town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. Th... more Reghaia town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. The aim of this study is to assess water quality in Reghaia lake basin by determining current status, temporal evolution and apportionment of pollution sources. Three samplings were carried out in fourteen stations covering the lake and its principal tributaries. Sixteen physical-chemical parameters and three microbiological parameters were analyzed. Surface Water Quality Evaluation System (SW-QES) was used to visualize the temporal evolution of available data from 1978 to 2017. Water quality index (WQI) was used to assess the global water quality for irrigation purpose and its spatial variation across the basin. Organization for Economic Co-Operation and Development (OECD) international classification and trophic state index (TSI) were used to evaluate trophic category of the lake. Organic pollution index (OPI) and microbiological quality index (MQI) were used to establish pollution maps ...

Research paper thumbnail of Treatment of the OUED SMAR town landfill leachate by an electrochemical reactor

Research paper thumbnail of Water quality assessment in Réghaïa (North of Algeria) lake basin by using traditional approach and water quality indices

Réghaïa town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. Th... more Réghaïa town, located in Algiers (North of Algeria), presents a strong anthropogenic activity. The aim of this study is to assess water quality in Réghaïa lake basin by determining current status, temporal evolution and apportionment of pollution sources. Three samplings were carried out in fourteen stations covering the lake and its principal tributaries. Sixteen physical-chemical parameters and three microbiological parameters were analyzed. Surface Water Quality Evaluation System (SW-QES) was used to visualize the temporal evolution of available data from 1978 to 2017. Water quality index (WQI) was used to assess the global water quality for irrigation purpose and its spatial variation across the basin. Organization for Economic Co-Operation and Development (OECD) international classification and trophic state index (TSI) were used to evaluate trophic category of the lake. Organic pollution index (OPI) and microbiological quality index (MQI) were used to establish pollution maps of the study area. The lake presents excessive pollution since the 1970s. BOD5/COD ratio (0.1) recorded in 2017 indicates a very low biodegradability of Réghaïa lake waters. The value of Canadian Council of Ministers of the Environment-water quality index (CCME-WQI) (14.31) indicates poor water quality. The values of Weighted arithmetic-water quality index (WA-WQI) are extremely high (>4000) which indicates unsuitable water quality for irrigation purpose. Hypertrophic nature of the Réghaïa lake was identified (TSI > 80) and confirmed by the OECD classification. Spatial distribution of pollution indicators shows that Réghaïa river and ElBiar river are the most important pollution sources. Calculations of WA-WQI with and without Coliforms indicate that Réghaïa river is the most important microbial pollution source. A slight decrease in organic pollution and remarkable improvement in microbiological quality was observed at the outlet of the lake. According to these results, sewage discharged without or with insufficient treatment is the main pollution source of the Réghaïa lake which has been a receiving environment for many years and continues to be polluted today and tomorrow If we do not react effectively by stopping the pollution sources.