WATER DESALINATION PROJECT IDENTIFICATION IN SINAI, EGYPT

Transcription

1 WATER DESALINATION PROJECT IDENTIFICATION IN SINAI, EGYPT By Magdy Abou Rayan*, Berge Djebedjian* and Ibrahim Khaled** * Faculty of Engineering, Mansoura University, El-Mansoura 35516, Egypt mrayan@usa.com, bergedje@mum.mans.eun.eg ** Water Department, Sinai Development Authority, Egypt ABSTRACT The development of non-conventional water resources in Egypt is a must in order to respond to the continuously increasing demand. The present paper presents the result of an investigation undertaken in order to evaluate technically and economically the installed desalination units in Sinai. The available water resources are evaluated. Forecast study is undertaken in order to evaluate the expected shortage. The future need for desalination units is identified. The main objective of this work is to identify the potential sites for desalination project implementation. Keywords: Sinai, Water Resources, Desalination. INTRODUCTION Egypt is facing water scarcity due to the over population, industrialization and agricultural expansion. Sinai and Red Sea areas are suffering from water shortage. The two areas are identical in geographical condition. They are away from Nile with limited underground water resources. Both areas are important to Egypt s economic growth. The present study is focused on Sinai. A detailed analysis is undertaken dealing with: 1- Water resources (including non-conventional), 2- Water use. Sinai and particularly the gulf of Aquaba region is promising for Egypt economic growth. The only disadvantage for the development of this area is water. The study has shown clearly that water desalination is the most appropriate way to respond to water shortage problem. The Med-Co-Desal (Mediterranean Cooperation for Water Desalination Policies in the Perspective of a Sustainable Development) GIS tool has been used in identifying the areas under risk and the necessary plant size and technology, also the expected water cost was calculated. The study gives an estimation of required potential project to the water shortage problem.

2 The water resources are evaluated and then the water use. Finally, scenarios were developed in order to estimate the desalination projects required. I- WATER RESOURCES IN SINAI This is the water resources management function. The objective is to: Assess the present water resources. Provide reliable information on the availability and quality of surface and groundwater. Provide scenarios for the development and use of water. Following are general description of Sinai and the assessment of resources, its availability and quality. The Sinai Peninsula has an area of 59,438 km 2, Figure (1). Sinai includes some plains and highlands, Figure (2). The weather in the plains is similar to other parts of Egypt, mainly dry and warm. The weather of the highlands differs from other parts of Sinai in the temperature and the rainfall amounts. It is colder with minimum of 10 C difference in temperature. In this district, the rainfall increases and reaches that of the Mediterranean district. Port Said Romana Rafah Sheikh Zuwayid El-Arish Ismailia El-Suez Bir El-Abd Abu Aweigila El-Quseima Gifgafa El-Hasana North Sinai El-Kuntilla Nakhl Ras Sudr Asal South Sinai El-Themed Taba Red Sea Gulf of Suez Abu Zenima Abu Rudeis Saint Catherine Abu Durba Dahab El-Tor Gebeil Nebk Nuweiba Gulf of Aqabah Sharm El-Sheikh Figure (1) Sinai Peninsula and North and South Sinai governorates

3 Altitudes (in meters) > 1500 m m m m m Figure (2) Topography of Sinai The total population is 254,000 which is mainly Bedouin (60 %) and the rest are located in small cities as El-Arish, Sharm El-Sheikh. The population growth rate is the highest in Egypt 2.87 %. The water resources in Sinai can be classified into the following categories: 1- Renewable resources from rain, 2- Underground water, 3- Potable water transported by pipeline, 4- Desalinated water. 1- Renewable Resources from Rain (Precipitation) Despite that in Sinai some places possess a reasonable precipitation rate of 200 mm/year; Figure (3); this rate is considered as the highest in Egypt. Significant intensities of rainfall are recorded during some years in the neighborhood of 500 mm/year. The precipitation is not used efficiently in Sinai; most of the water goes to the sea, in some cases causes disaster in its way to the sea. Annual Rainfall mm/year) ( > Figure (3) Annual precipitation in Sinai

4 Anyhow, the precipitation in Sinai is not counted as water resources despite that the future strategy of Ministry of Water Resources is based on the utilization of this water through the construction of some dams in order to accumulate water. For the moment this resource is not counted. 2- Underground Water The underground water, (Figures 4 and 5), is divided into two parts: - Brackish water, and - Low salinity water. Coastal Aquifer Karstified Carbonate Aquifer Nubian Sandstone Aquifer Fractured Rocks Aquifer Figure (4) Main aquifers in Sinai Figure (5) Location of wells and springs in Sinai for brackish and low salinity water

5 a) Brackish water: The Brackish water supply is of salinity up to 20,000 P.P.M. The water delivered from the wells goes directly to agriculture if it is of low salinity. The rest is desalinated reverse osmosis (RO) or electrodialysis (ED). Table 1 shows the number of wells and its salinity. Table 2 shows the desalination units using brackish water. Table 1. Brackish water resources City Number of Wells Approximate Depth in Meters Capacity in Cubic Meter/day Salinity El-Arish El-Hasana Nakhl El-Quseima spring Sheikh Zuwayid Rafah Table 2. Desalinated brackish water City Number of units Capacity in cubic Process meter/day El-Arish Electrodialysis El-Hasana Electrodialysis Nakhl Reverse Osmosis El-Kuntilla Reverse Osmosis Abu Aweigila Reverse Osmosis The capacity of the desalination units of brackish water is low since it is basically for small agglomeration except at El-Arish. These small units produce water for domestic use. b) Low salinity water ( P.P.M.): This water is used in domestic purposes and agriculture. This resource is concentrated only in El-Qaa Plain. In the area of El-Tor City and Saint Catherine, the number of wells is 26 with total capacity of 25,000 m 3 /day. The population of these regions is 22,000 inhabitants. The water is more than the requirements for this population and a part of it is transported to the neighboring areas as Sharm El-Sheikh and Abu Rudeis. Also, this area is an agriculture area due to the presence of these wells. 3- Potable Water Transported by Pipeline The first pipeline was inaugurated since 10 years to El-Arish, Figure (6), with 158 km length and 700 mm diameter. The same pipeline continues to Sheikh Zuwayid and Rafah. Actually the supply is given in Table 3.

6 Port Said Bir El-Abd Rafah Sheikh Zuwayid El-Arish El-Salam Canal Ismailia Gifgafa Suez Ras Sudr Asal Gulf of Suez Abu Zenima Abu Rudeis Gulf of Aqabah Figure (6) Water transportation to Sinai by pipelines Table 3. Nile water supply to Sinai City Capacity (m 3 /day) Rumana 5,000 Bir El-Abd 10,000 El-Arish 20,000 Sheikh Zuwayid 5,000 Rafah 5,000 Total Supply 45,000 Future Projects There is a new 3-year project to supply water to Gifgafa (middle of Sinai) by pipeline with length 182 km and total capacity of 60,000 m 3 /day, Figure (6). It is still in the stage of future project. The cost of this pipeline will be high particularly if it will be extended to the gulf of Aquaba. The cost will be certainly higher than desalination units. 4- Desalinated Water Most of gulf of Aquaba region is based basically on desalination to respond to water demand requirements. There are two categories of desalination units. First is the governmental owned units, Second is the private sector owned units.

7 Table 4 presents the governmental owned units and the technology used. From this table, the total amount of desalinated water is 9,900 m 3 /day or 3.6 million m 3 /year. Table 5 presents the private sector owned units: in fact the major supply of desalinated water is from private sector. The total capacity of private sector production is 30,090 m 3 /day or 11 million m 3 /year distributed on 21 production plants basically owned by hotels. Table 4. Governmental Desalination Units Place Taba Taba Nuweiba Dahab Sharm El-Sheikh Sharm El-Sheikh Nuweiba System R.O. M.V.C. E.D. R.O. V.V.C. R.O. M.E.D. Date of start Total area, m Capacity, m 3 /day Feed water salinity, PPM Product salinity, PPM Power consumption, kw/m 3 Total Cost/m 3, LE NA R.O. (Reverse Osmosis), M.V.C. (Mechanical Vapor Compression), E.D. (Electrodialysis), V.V.C. (Thermal Vapor Compression), M.E.D. (Multiple Effect Desalination) Table 5. Private sector owned units Location Owner Technology Capacity (m 3 /day) Salinity Product Salinity Selling Price (LE/m 3 ) Taba Golden Coast R.O , Maleh Company R.O , Nuweiba Helnan R.O , Hilton R.O , Sharm Pyramiza R.O , El-Sheikh Ramo R.O , Metito R.O , Raga R.O , Southern Water Company R.O , Montazah R.O , Residence R.O , Euro Palace R.O , Meridien R.O , Aqua Marina R.O , Moevenpick R.O , Marriott R.O , Dahab Sheikh Zayed R.O , Bacha Coast R.O , Ghazala R.O , Helnan R.O , Pullman R.O ,

8 II- WATER USE The water use in Sinai is classified as following: - Agriculture: The agriculture in Sinai is mainly based on precipitation. The agriculture is seasonal, 251,000 feddans (1 hectare = 2.38 feddans). It has no real impact on the national economy. The new plan for land reclamation is based on El-Salam canal, Figure (6). This project pretends to reclaim 0.7 millions feddans in Sinai. The required irrigation water is 4 billion cubic meter/year. Half of this water will come from the reuse of agriculture drains. As seen from the figure the canal is planned to go to El-Arish City. - Domestic: The density of population in Sinai is very low. The supply of water for domestic use comes from the Nile water transported by pipeline. All North Sinai relays on Nile water treated at Port Said water treatment plant. The discharge of the pipeline is 45,000 m 3 /day. It satisfies all the need for the inhabitants of North Sinai cities and villages. In South Sinai the coastal area of Suez gulf relays on Nile water transported by pipeline at discharge of 17,500 m 3 /day. The city of El-Tor, the capital of South Sinai, relays on groundwater. The coastal area of gulf of Aquaba relays on desalination. - Tourism: The tourism activities are based mainly on desalinated water. The water consumption in tourism activities is high as 500 lit/day/bed. The expansion of tourism is based on desalination. - Recreational: The recreational areas are irrigated by treated sewage water. A private sector company is in charge of treating the sewage and selling of the treated water. III- SCENARIOS Based on the available information, and forecasting for the future, the expected major activities in Sinai will be: Agriculture, Tourism. The agriculture activities will be covered by El-Salam canal; it is worthy to develop any real agriculture activities away from El-Salam canal. For the development of Gulf of Aquaba coastal zone, beside desalination there is a future project to erect a pipeline to transport water until the gulf of Aquaba. This project suffers from two main disadvantages: 1. The high cost of installation, added to running cost is approximately 4 LE/m Egypt suffers from water insufficiency problems; water is recycled in order to meet the ever-increasing demand. This pipeline will increase the demand that is satisfied with difficulties.

9 According to these disadvantages the scenario for development of Gulf of Aquaba region must be based on sea water desalination to satisfy all demand whether tourism or domestic. Legislation is required in order to encourage private sector participation in the field of water production by desalination and reuse of treated sewage water. An incentive as tax exemption for investment in this sector is required. Only two companies are active in this field with no competitors. The competition will bring the price down. Importance of Desalination in order to respond to Water Shortage Problems The data obtained from the governmental units are in details, Table 4, which enables the economic analysis. As a general the dominating technology is the Reverse Osmosis technology. Also the private sector uses only this technology. The Sharm El-Sheikh vapor compression unit gives low total cost per cubic meter because part of the fund used in the erection of the plant is a donation from abroad. So this figure can not be considered since the capital cost is not accurate. But in general the cost of the water produced by Reverse Osmosis and the vapor compression are similar at LE 6.2 to 6.34 for RO and 6.64 for vapor compression. The difference does not justify the use of one technology or the other. The detailed investigation and the site visits reveal that the RO technology expenses are elevated because of the intake in most cases. An example is the Sharm El-Sheikh plant where the beach wells were not performed, as they should be, an open intake was designed to recompense for the lake of feed water. The international tender now for RO units is as low as less than one $US, which is equivalent to Egyptian LE 3.4, approximately half of the operating cost actually practices in Sinai. That is why the new unit will be RO and the private sector has understood these results. The advantage of reverse osmosis is its maintenance work is less sophisticated than vapor compression. The two units of vapor compression are suffering from maintenance problems and deliver less than the nominal capacity. Another advantage of RO units is its reliability and compactness in size. This is important for the tourist area where the surface area is limited. Water Requirement by the Year 2010 Variation in water requirements under the alternative development strategies depends primarily on the area under consideration and the scenario for the development. The primary activity in this region is tourism. Three scenarios in this region can be expected for the development of tourism. The actual demand for the coming 3 years is 35 % increment, which corresponds to yearly increment rate of 11 %. 1) High scenario (actual) 11 % 2) Moderate scenario 8 % 3) Low scenario 5 % The actual scenario is the high scenario. There was a sudden increment this year for the demand of hotel licenses. Most of them are located in Taba-Nuweiba coast. The rate will

10 decrease because there is no more places available in this area. It is completely booked. The expected area for construction is Dahab and Sharm El-Sheikh. Market Potential The global market potential for Gulf of Aquaba area is 65 hotels for the period of two to three years. This is the number of licenses demanded to the governorate. The distribution is according to Table 6. Table 6. Number of licenses for hotels construction to the year 2003 Location No. of Licenses Nuweiba 3 Nuweiba - Dahab 2 Dahab 6 Dahab Sharm El-Sheikh 9 Sharm El-Sheikh 18 Taba 2 Taba - Nuweiba 25 Total 65 The expected number of beds is about 65 x 500 assuming each hotel of 500 beds. The total expected growth in water market demand = 65 x 500 x 0.54 = 17,550 m 3 /day, which represents an increment of % of actual capacity, distributed on three years with 11 % per year. This is considered as the high scenario of demand increment. This study has been done using Med-Co-Desal GIS tool. The analysis of shortage according to the region was done using three scenarios: high 11 %, moderate 8 % and low 5 %. The results are shown in Figures (7), (8) and (9) for Nuweiba, Dahab and Sharm El-Sheikh subregions, respectively. The calculation was done up to the year The only way to respond to this shortage is the desalination of seawater. Water Shortage, 10 6 m 3 /year Year Low, 5 % Moderate, 8 % High, 11 % Figure (7) Scenarios for water requirements (*10 6 m 3 /year) for Nuweiba subregion

11 Water Shortage, 10 6 m 3 /year Low, 5 % Moderate, 8 % High, 11 % Year Figure (8) Scenarios for water requirements (*10 6 m 3 /year) for Dahab subregion Water Shortage, 10 6 m 3 /year Low, 5 % Moderate, 8 % High, 11 % Year Figure (9) Scenarios for water requirements (*10 6 m 3 /year) for Sharm El-Sheikh subregion IV- PROJECT IDENTIFICATION AND MARKET POTENTIAL FOR DESALINATION SYSTEMS The coast from Taba to Sharm-El-Sheikh is 230 km. It can be divided into three regions Nuweiba region, Dahab region, and Sharm El- Sheikh region. These divisions are made according to the available data. The development of this area is important to the national economy. The advantage of this area is being full of visitors allover the year. There is no particular season. The construction of hotels and resorts has going on in an increasing rate. Cities like Sharm-El-Sheikh has no more places for new construction. The construction now is outside the city. At the beginning, the state owned water production units were supplying water to the few hotels, but with the increasing number of hotels and resorts the supply of water become the responsibility of each resort. An estimated global potential for this year 2000 is 15,000 m 3 /day based on the actual demand of the resorts in construction. This situation has motivated the private sector to invest in. There are two private

12 sector companies in Sharm-El-Sheikh for water desalination. The selling price of water is relatively high LE 7 / m 3. The latest technology units of R.O. can provide water at US$ 1, which is equivalent to LE 3.4. The solar desalination must be seriously considered for this area. At 1982 the potential of desalination water was 625 m 3 /day. Now it is 51,690 m 3 /day. The assumptions made to estimate the water demands of tourism are detailed in Table 7, based on a requirement of 400 liters/visitor day in a hotel, and 15 liters for each visitor at restaurants, rest stops, beach resorts and national parks. Table 7. Assumptions for water requirement for tourism Type of Location Requirement per visitor (liters/day) Actual water requirement (liters/day)* Hotel x No. of beds x 1.7x 0.8 Restaurant and Rest Stop x No. of employees x 10 Beach Resort and National Park x No. of employees x 5 * This figure is used in order to calculate the total water requirement for visitors/day taking into consideration all the side activities: recreational, gardens, swimming pools, and the required service personnel. CONCLUSION The desalination option is the most appropriate in order to respond to the water shortage problems in South Sinai. Based on the present study the Reverse Osmosis is the appropriate technology for the development of Sinai and the gulf of Aquaba region. The solar energy can be used in order to power these units using Photovoltaic unit instead of Diesel generator where Diesel is used. The Photovoltaic Panels can be installed on the neighboring mountains. The area of Gulf of Aquaba is expected to have BOOM in the erection of tourist establishment. The estimated market potential in only south Taba area is 20,000 m 3 /day for over forty hotels and touristic resorts in course of erection. ACKNOWLEDGMENTS This publication has been supported by EC grant INCO initiative (MedCoDesal) Project. REFERENCES 1- Assimacopoulos, D., Estimating the Cost of Water Produced by RES Powered Desalination Systems, Proc. of the Mediterranean Conference on Renewable Energy Sources for Water Production, Santorini, Greece, June Rayan, M. A., and Djebedjian, B., Egypt s Water Demand, Supply and Management Policies, presented during the workshop and training course entitled Mediterranean Cooperation for Water Desalination Policies in Perspective of a Sustainable Development, Paris, January 2000.

13 3- Rayan, M. A., and Khaled, I., Desalination Option within the Integrated Water Resources Management for Sinai, Egypt, Proc. of the Mediterranean Conference on Renewable Energy Sources for Water Production, Santorini, Greece, June 2000.