1. DIRECT INTEGRATION OF RENEWABLE ENERGY INTO A REVERSE OSMOSIS PROCESS

2. DIRECT INTEGRATION OF A RENEWABLE ENERGY INTO A R.O. PROCESS WATERDEMAND WATEREXCESS R.O. MODULE RENEWABLE ENERGIES SEA WATER PUMP MOTOR BRINE WHICH WILL BE THE QUALITY OF THE PRODUCT WATER? HOW MUCH WILL THE SPECIFIC CONSUMPTION OF ENERGY BE?

3. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O. plant Description R.O. plant First results First results Conclusion Conclusion

4. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O. plant Description R.O. plant First results First results Conclusion Conclusion

5. ANTECEDENT Progressive increase of water consumption due to the increase of population. Progressive increase of water consumption due to the increase of population. Increase of energy request (by fuel sources). Increase of energy request (by fuel sources). Search of a sustainable development by the promoting the desalination techniques with use of renewable energy for water production. Search of a sustainable development by the promoting the desalination techniques with use of renewable energy for water production. WHY IS DESALINATION SO IMPORTANT AT PRESENT?

6. ANTECEDENT The main drawback of the renewable energies (Wind and PV): The main drawback of the renewable energies (Wind and PV): NOT GUARANTEE A CONTINUOUS AND CONSTANT SUPPLY OF ENERGY

7. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O. plant Description R.O. plant First results First results Conclusion Conclusion

8. OBJECTIVES To observe the adjustment of an RO plant with a renewable energy source. To observe the adjustment of an RO plant with a renewable energy source. Related to this work are the projects: Related to this work are the projects: OPRODES and OPRORES. OPRODES and OPRORES.

9. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O. plant Description R.O. plant First results First results Conclusion Conclusion

10. LOCALIZATION

11. DESCRIPTION OF THE R.O. PLANT The main components are: HIGH PRESSURE PUMP HIGH PRESSURE PUMP MEMBRANES MODULE MEMBRANES MODULE SENSORS SENSORS CONTROL SYSTEM CONTROL SYSTEM An advance in the design of the plant would be the installation of an energy recovery system. An advance in the design of the plant would be the installation of an energy recovery system.

12. HIGH PRESSURE PUMP Positive displacement pump with three stainless steel piston pump. Power 30kW. Positive displacement pump with three stainless steel piston pump. Power 30kW. Maximum flow: 9.8 m 3 /h. Maximum flow: 9.8 m 3 /h. Power ranges: 7-85 bar. Power ranges: 7-85 bar. System of pulleys with a transmission relationship 4:1. System of pulleys with a transmission relationship 4:1. CAT 6761

13. MEMBRANE KOCH - FLUID SYSTEMS TFC 2822-SS Premium. (Spiral polyamide). 1 tube (6 metres long)  6 membranes 1 tube (6 metres long)  6 membranes Max. Permeation 17m 3 /day. Max. Permeation 17m 3 /day. Salt rejection 99.75% each. Salt rejection 99.75% each. Total area of 27.9m 2. Total area of 27.9m 2.

14. INSTRUMENTATION

15. GENERAL LAYOUT

16. CONTROL SYSTEM PLC –TSXMICRO3722 PLC –TSXMICRO3722 VSD-ATIVAR66 VSD-ATIVAR66 REJECT VALVE REJECT VALVE SCADA-VIJEO LOOK 2.6 SCADA-VIJEO LOOK 2.6 REJECT VALVE TSXMICRO3722 CONTROL DESK & ALTIVAR 66

17. OPERATION RANGE OF THE PLANT Minimum operating pressure – 30 bar. Minimum operating pressure – 30 bar. Maximum operating pressure – 68 bar. Maximum operating pressure – 68 bar. Minimum recovery – 15%. Minimum recovery – 15%. Maximum recovery – 50%. Maximum recovery – 50%. Minimum electric motor r.p.m. – 800 r.p.m. Minimum electric motor r.p.m. – 800 r.p.m. Maximum electric motor r.p.m. – 1500 r.p.m. Maximum electric motor r.p.m. – 1500 r.p.m. Minimum power consumption – 5.5 kW. Minimum power consumption – 5.5 kW. Maximum power consumption – 21.5 kW. Maximum power consumption – 21.5 kW.

18. ENERGY RECOVERY TP 1 IP PDSH PRETREATMENT FILTER OF CARTRIDGE SHOCK VSD1 PHP SEA- WATER NET OF SUPPLY PSHD PH T TT TC TUBE OF PRESSURE PUMP IP TP1 IF TF TC IP1 TP TT IF TF TC BRINE PRODUCT V TANK OF CLEANING VSD2 T G 1 2 DC BUS

19. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O plant. Description R.O plant. First results First results Conclusion Conclusion

20. FIRST RESULTS (1) Graphics of results Graphics of results The consumption of kW/m 3 of product water decreases for higher working pressures. PRODUCT FLOW AND SPECIFICCONSUMPTION PRODUCT FLOW AND SPECIFIC CONSUMPTION

21. FIRST RESULTS (2) Graphics of results Graphics of results FEED FLOW, REJECT FLOW AND RECOVERY FACTOR For high pressures: -  Quality of water -  Energy -  kW/m 3 42%

22. INDEX: INDEX: Antecedent Antecedent Objective Objective Description R.O. plant Description R.O. plant First results First results Conclusion Conclusion

23. CONCLUSIONS (1) Our RO plant, which works under variable load, shows us that the optimum performance of the plant (recovery 42%) is between 16 and 18 kW, working pressure from 57 to 67 bars. Our RO plant, which works under variable load, shows us that the optimum performance of the plant (recovery 42%) is between 16 and 18 kW, working pressure from 57 to 67 bars. In these conditions the specific consumption oscillate into a range of 4.1 to 4.7 kW/m 3, and a maximum water production of 4.2 m 3 /h In these conditions the specific consumption oscillate into a range of 4.1 to 4.7 kW/m 3, and a maximum water production of 4.2 m 3 /h

24. The kinetic energy in brine flow is high, so the installation of an energy recovery is highly recommended. The kinetic energy in brine flow is high, so the installation of an energy recovery is highly recommended. We will install the most suitable energy recovery for our plant, which is the Pelton turbine. We will install the most suitable energy recovery for our plant, which is the Pelton turbine. We think we will obtain an energy recovery between 20-30% for our variable load plant. We think we will obtain an energy recovery between 20-30% for our variable load plant. CONCLUSIONS (2)

25. UNIVERSITY OF LAS PALMAS DE GRAN CANARIA Lidia Segura and Antonio Gómez Department of Process Engineering lsegura.proyinves@ulpgsc.es agomez@dip.ulpgc.es Ignacio de la Nuez Department of Electronic and Automatic Engineering inuez@diea.ulpgc.es

26. DIRECT INTEGRATION OF RENEWABLE ENERGY INTO A REVERSE OSMOSIS PROCESS QUESTIONS