Publications

EAU POTABLE

SAFEGUARDING AND PERFORMANCE OF ANCESTRAL WATER SUPPLY SYSTEM "KHETTARA" AS SUSTAINABLE ALTERNATIVE FOR ARID REGIONS

Journal of Water Supply, approved 2013.

H. Benqlilou, S. Bensaid

LARGE SCALE PUMPING SYSTEM SCHEDULING USING SCATTER SEARCH, TABU SEARCH AND NEUTRAL NETWORKS THE CASE OF BOUREGREG WATER SYSTEM IN MOROCCO 

Mustapha Hajji, Driss Ouazar ,Ali Fares, Fred Glover

APPROACH FOR DRINKING WATER QUALITY MONITORING IN RURAL AREAS: MOROCCO'S CASE, WATER SUPPLY VOL 4 No 5-6 pp 415–419 © IWA PUBLISHING 2005.

H. Benqlilou, L. Laraki and A. Outair

 

ASSAINISSEMENT

WASTE WATER TREATMENT PLANT PERFORMANCE INSIDE MULTI-SOIL-LAYERING SYSTEM

Journal  : American Journal of Applied Sciences

ABSTRACT

Wastewater effluent disposal is a challenge in Moroccan rural area. Wastewater treatment is the only suitable solution to overcome these environmental constraints. Technology such as Multi-Soil-Layering (MSL) system is one of the most appropriate solution for the treatment of wastewater for small communities in rural areas.

The MSL system overcomes many of the deficiencies of conventional soil treatment systems such as large land requirement clogging, and low hydraulic loading rate (HLR). The MSL systems are composed of soil mixture blocks (SMB) arranged in a brick-like pattern and surrounded by permeable layers (PL). To investigate the efficiency of MSL systems in relation to HLR differences and the fluctuations in the wastewater contamination levels, three MSL pilot plants were alimented continuously by domestic wastewater, were constructed in three 36 cm × 30 cm × 65 cm plastic boxes, with different HLR of 250, 500 and 1000 l/m2/day. The main removal rates of Biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) were higher at higher HLR. However, the kinetic rate constant of the MSL process implemented under Moroccan conditions is 130 d-1 at 25 °C.

Keywords: BOD5; kinetic; Morocco; treatment; wastewater.

MODELLING AND RECYCLING SIMULATION OF THE WASTEWATER TREATMENT PLANT OF THE CITY OF MRIRT,

Journal of Water Practice and Technology de l'IWA - WPT-13-46

Authors : Siham Belarbi (1), Mustapha Mahi (2), Youssef Abarghaz (1), Najib Bendaou (1)

1-Faculty of Science, Mohammed V-Agdal University, 4 Avenue Ibn Battouta, B.P. 1014 RP, Rabat – Morocco. 
2- Institut International de l’Eau et de l’Assainissement de l’Office National de l’Electricité et de l’Eau Potable, Avenue Belhassan El Ouazzani, B.P Rabat-Chellah 10002 Morocco. 

ABSTRACT

This work focuses on the wastewater treatment plant in the city in Morocco called “Mrirt”. This wastewater treatment plant produces quite noticeable odors especially from the anaerobic ponds, leading to the search for a solution to reduce odors. The location is not far from habitations.

The solution chosen is the recycling of effluent from the exit of the plant towards the anaerobic ponds. The study consists in modeling the effect of recycling wastewater.

Modeling discussed is to bring the operation of the anaerobic and facultative ponds by mathematical models that can then be used to perform simulations of the projected order to determine the impact on the recycling wastewater solution.

Recycled effluent and its injection into anaerobic lagoons is a process and a new experience in Morocco. The simulation results of this new principle are quite promising and may thus constituted a platform for future projects of sewage treatment plants on the one hand and for projects and solutions to reduce odors from anaerobic lagoons on the other hand.

It should be noted that it was very difficult to choose the parameters used as input data for modeling anaerobic lagoons.


Key worlds: Anaerobic lagoons, Morocco, Odors treatment, ONEE, Recycling, Sulfid.

 

MODELLING OF THE ANAEROBIC DIGESTER BIOGAS PRODUCTION : CASE OF THE PILOT PROJECT IN MOROCCO"

Journal of Water Reuse and Desalination © IWA Publishing 2013

Authors: Youssef Abarghaz, Mustapha Mahi, Khiyati mohammed Elghali, Najib Bendaou, Mohammed Fekhaoui and Christine Werner

Institut International de l'Eau et de l'Assainissement de l'ONEE -Rabat-Morocco
Faculty of Science, Mohammed V-Agdal University Rabat, Morocco
Scientific Institute, Mohammed V-Agdal University Rabat, Morocco
GIZ – Rabat - Morocco

ABSTRACT
The anaerobic digestion system studied had been implemented on June 2010 in a Moroccan village called “Dayet Ifrah”. The input material consists of toilet wastewater and cattle manure where biogas is produced under anaerobic condtions. The biogas is used for heating and cooking. This biogas system could be an appropriate sanitation technology due to its ability to treat wastewater. The biogas system was monitored during 86 days in summer 2012 to measure the gas production. Average maximum of about 1870 litres gas production was recorded per day.. The amount of biogas produced is sufficient for the farmer family composed of 17 poeple needs. Our work seeks to find the most appropriate formula used to predict biogas production under Moroccan conditions. It consists on comparing different models calculating the Chemical Oxygen Demand (COD) removed based on measured volumes of biogas on site and choosing the best adapted one using the principal component analysis and the ELECTRE III method. The results show that the formula Vedrenne is the most appropriate equation to calculate biogas production in Moroccan rural areas.

Key worlds: anaerobic digestion system, Biogas, ecosan, methanisation, Moroccon rural areas, principal component analysis.

 

LESSONS LEARNT ON ECOSIAN IN MOROCCO: CASE OF THE URINE-DIVERSION DEHYDRATATION TOILETS

Journal of Water Reuse and Desalination Vol 3 No 1 pp 55–68 © IWA Publishing 2013 doi:10.2166/wrd.2013.050

Youssef Abarghaz, Mustapha Mahi, Najib Bendaou, Mohammed Fekhaoui and Christine Werner
Institut International de l'Eau et de l'Assainissement de l'ONEE -Rabat-Morocco
Faculty of Science, Mohammed V-Agdal University Rabat, Morocco
Scientific Institute, Mohammed V-Agdal University Rabat, Morocco
GIZ – Rabat - Morocco

ABSTRACT
‘Lessons learnt on Ecosan in Morocco’ is a short analysis of experience gained in Morocco especially in rural areas where people do not have adequate systems of evacuation of their wastewater. The rural population cannot afford conventional sanitation systems. In response to this, we have thought to promote ecological sanitation that recognises wastewater not as a waste but as a resource. The first Urine-Diversion Dehydration Toilets (UDDTs) were introduced in a rural village called ‘Dayet Ifrah’ in Morocco in December 2009. Since then, households are starting to see the advantages of UDDTs and the systems are becoming more and more accepted. The UDDT systems implemented in the village could be used as a model for Moroccan rural areas. This paper sets out how the Ecosan approach was successfully introduced in Morocco where people are motivated by reasons to improve this approach such as no smell, safety, comfort, privacy and water reuse. Results reveal that the users are satisfied with the Ecosan approach to cleanse their wastewater. Although Ecosan is relatively new to Morocco, it seems that it can succeed in very poor populations. The paper contains information on general experiences in the different countries and also lessons learnt on Ecosan in each country.

Keywords: agriculture; Ecosan pilot project; marketing; Morocco; rural areas; urine diversion

 

 

RURAL DOMESTIC WASTEWATER TREATMENT BY MULTI-SOIL-LAYERING (MSL) SYSTEM UNDER ARID CLIMATE IN MOROCCO.

 

Soil Science and Plant Nutrition
Auteurs :
- Institut International de l’Eau et de l’Assainissement de l’ONEE, Rabat, Morocco : Mahi Mustapha
- Faculty of Life and Environmental Science, Shimane University, Matsue 690-8504, Japan. Tsugiyuki MASUNAGA
- Japanese International Cooperation Agency (JICA), Rabat, Morocco.
- National Center for Research and Study on Water and Energy (CNEREE), Cadi Ayyad University, PO 511, 4000, Marrakech, Morocco. E-mail: LATRACH LAHBIB & Laila Mandi
- 2 Laboratory of Hydrobiology, Ecotoxicology and Sanitation (LHEA, URAC 33), Faculty of Sciences Semlalia, Marrakech, Morocco. Email: NAILA Ouazzani

 

ABSTRACT :
In Morocco, most of rural areas are suffering from pollution and the potential illness caused by untreated wastewater discharged in the environment. Sanitation in this region, where technical and financial resources are usually limited, has a negative impact on the quality of life of the rural population. In order to solve this problem, a number of alternative technologies have been developed as a multi-soil-layering (MSL) system, based on small-scale treatment systems which are adapted to the needs of these areas. Wastewater characteristics and hydraulic loading rate (HLR) are important factors that influence the treatment efficiency of the MSL systems. Therefore, the aim of this study was to evaluate the efficiency of MSL systems to treat rural area wastewater characterized by high concentrations of organic matter with varying HLRs. The present study reports the performance of domestic wastewater treatment plant using MSL system under arid climate of Moroccan. The experimental setup included three parallel similar MSL pilot. Three HLRs were applied; 1000, 2000 and 4000 L m-2 day-1 respectively for each MSL system. The obtained results showed average reduction efficiency for SS, BOD5, COD, TN and TP of 77-86, 57-78, 51-76, 55-67 and 46-61 %, respectively. The mean removal percentage of SS, BOD5, COD and TP tended to be higher at lower HLRs. An increase in the HLR reduced the hydraulic retention time in the MSL system, which resulted in the decrease of the removal percentage, thus TN was not appreciably influenced by changes in the HLR. In terms of absolute loading rate, a satisfactory removal rate pattern was achieved. The purification efficiency ranges of the MSL systems are 278-1595 g SS m-2 day-1, 447-2156 g BOD5 m-2 day-1, 612-2823 g COD m-2 day-1, 72-293 g TN m-2 day-1 and 8-32 g TP m-2 day-1. However, the higher HLRs used in the present study, caused clogging of the system after 210 days of operation. An operation cycle whith periodical resting time, a low HLR and efficient pretreatment for reduce concentrations of SS discharge into the system could be recommended for use of the MSL system in Moroccan rural areas.

 

Keywords: multi-soil-layering system, domestic wastewater treatment, hydraulic loading rate, organic matter, nutrients, rural area, arid climate of Morocco.

WASTE WATER TREATMENT PLANT PERFORMANCE INSIDE MULTI-SOIL-LAYERING SYSTEM

Journal  : American Journal of Applied Sciences

ABSTRACT

Wastewater effluent disposal is a challenge in Moroccan rural area. Wastewater treatment is the only suitable solution to overcome these environmental constraints. Technology such as Multi-Soil-Layering (MSL) system is one of the most appropriate solution for the treatment of wastewater for small communities in rural areas.

The MSL system overcomes many of the deficiencies of conventional soil treatment systems such as large land requirement clogging, and low hydraulic loading rate (HLR). The MSL systems are composed of soil mixture blocks (SMB) arranged in a brick-like pattern and surrounded by permeable layers (PL). To investigate the efficiency of MSL systems in relation to HLR differences and the fluctuations in the wastewater contamination levels, three MSL pilot plants were alimented continuously by domestic wastewater, were constructed in three 36 cm × 30 cm × 65 cm plastic boxes, with different HLR of 250, 500 and 1000 l/m2/day. The main removal rates of Biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) were higher at higher HLR. However, the kinetic rate constant of the MSL process implemented under Moroccan conditions is 130 d-1 at 25 °C.

Keywords: BOD5; kinetic; Morocco; treatment; wastewater.

 

 

Distinctions

         ISO IEA