BARAKI TREATMENT PLANT ALGIERS ON TOMATO DAWCEN Lycopersicon Esculentum Nouara BOUDJEMA 1 Fatma Zahra AMRIOU 1 Ichrek BENKADDOUR 1 1 Faculty of Science of Nature and Life Department of Biology Cell Physiology University of Blida1 Algeria ID: 814639
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THE IMPACT OF THE REUSE OF WASTEWATER TREATED BY
BARAKI TREATMENT PLANT
(ALGIERS) ON TOMATO DAWCEN: Lycopersicon EsculentumNouara BOUDJEMA(1), Fatma Zahra AMRIOU (1), Ichrek BENKADDOUR (1)(1) Faculty of Science of Nature and Life, Department of Biology Cell Physiology, University of Blida1, Algeria. Email: Boudjema_n28@yahoo.com
5th
MacroTrend Conference on Energy and Sustainability. December 28-29, in Paris, France
Introduction
Methods
The experiment comprises 03 treatments, correspond a device in random blocks as follows: Treatment (T1): irrigation by city water (control) (CW)Treatment (T2): Irrigation by waste waste water (WW) (before treatment)Treatment (T3): irrigation by water treated by the Baraki treatment plant (WT). The assessment of the quality of the three types of water (EB, ET, EV), and the tomato health quality control were carried out through the parameters: Physico-chemical (COD, MES, etc.).Microbiological (TC, FC, E. coli, Enterococcus, fungi)ToxicologicalHeavy metals, pesticides (organ-ophosphorus (OP) and N-methyl carbamate (CM)) by the method Charm 2 (Radio Receptor Assay) (RRA).
Results
Agricultural reuse of wastewater has always existed and is today a widely accepted practice in the field. This reuse made with these waters presents major health risks for populations located in these perimeters and in permanent contact with these waters or consuming agricultural products without sanitary control. In Algeria irrigation of market gardening crops with wastewater is prohibited according to the official newspaper of the Algerian Republic (JORA, 2005) and National Sanitation Office (ONA, 2006). However, we note that the ban is not respected, which can cause risks of microbiological and physicochemical contamination. The aim of this work is to evaluate the sanitary quality of market garden tomatoes (Tomate Dawcen: Lycopersicon Esculentum) fed by three types of water (wastewater (WW), treated water from a Baraki treatment plant (WT), and city water (CW). to assess if its consumption is with or without danger to public health. This study is based on the analysis of the physicochemical, microbiological and toxicological parameters (heavy metals and pesticides) of the water and the finished product (tomato dawcen).
Wastewater before (WW) and after treatment at the Baraki treatment plant (TW)(activated sludge) was used to irrigate vegetable crops (tomato), results were compared with a control (irrigated with city water) (CW).Planting is done in a greenhouse (30 ° C) in 120 pots containing 1/3 of gravel and 2/3 of a mixture of soil and peat.
Crop
yield (tomatoes)
The desired trace elements assay results (Cd, Co, Cu, Fe, Pb, Ni and Zn) show moderate concentrations for the three water samples studied (City water, WW, TW). Comparing with the standards set by the Algerian official journal (JORA, 2012), the values recorded are in line with Algerian standards.
Irrigation of the tomatoes by the three types of water has led to similar growth and yield, but even better with treated water (WT). We noted by the Charm 2 method the presence of pesticides (organophosorous and carbamates) in trace form in both treatments (WW and WT) and a microbiological quality satisfactory for the finished product (tomato). The highest yield is recorded in plants fed by treated water (WT) with 21% in me from Mars, 55% in April and 92% in me from May.
Conclusions
.
fig2
fig1
Sewage treatment plant of
Baraki
(Algeria)
Fig.3. Evaluation of bacterial density (total
coliforms
,
faecal
coliforms
,
E. coli,
Enterococcus
) in the three types of water (City W, WW and WT)
)
Fig. 4. Concentration of physicochemical pollution parameters (BOD5, COD, MES) in the irrigation water during the study period (WW: Waste water, WT: wastewater treatment plant)
The finished
product "tomato" shows a good microbiological quality (total absence of germs of contamination and pathogenic germs). This result does not seem to entail an additional risk for the consumer.
This study showed the presence of pesticides (OP and CM) in the two treatments fed with WW and WT, this means that the irrigation water is contaminated by these elements. The danger posed by these contaminants is related to their long-term accumulation and high acute toxicity.
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