Drinking water for Gaza Elaboration concept 2

Transcription

1 Herontwerp 2014 Drinking water for Gaza Elaboration concept 2 Docent: Hassanpur Golriz, D. (Damon) Student: Roger Sylverstre Yapo (Group 4)

2 Content 1) Reverse osmosis description Page1 1.1) Description concept 2 option Page2 1.2) Description concept 2 option Page3 1.3) Information about concept2 option 2, parts and price page4

3 1) Reverse osmosis concept 2 Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane. This membrane technology is not properly a filtration method. In RO, an applied pressure is used to overcome osmotic pressure, a colligative property that is driven by chemical potential, a thermodynamic parameter. RO can remove many types of molecules and ions from solutions, and is used in both industrial processes and producing potable water How it works Chosen membrane: FILMTEC SW Maximum flow rate (flux): Maximum liter/second: Seawater Osmotic pressure sea water = 25,7 bar Indication operational pressure = 53,962 bar = Pa = [N/m 2 ] = * 10-4 = 539,62 [N/cm 2 ] Yearly costs replace carbon filter and sediment (cartridge): 4x 1,60 = $6,40 -> 0,73*1,60 = 4,70

4 1.1) Description of Concept 2 (option 1) This concept uses exactly the same system as Reverse osmosis. The seawater gets in the system once pump (1) is on Figure 1. Then the same pump 1, pumps the water in de semipermeable membranes. All undesirable particles stay in the semipermeable membrane Figure 2. The seawater passes through the 3 membranes. The cleaned water is sucked by another pump (2) Figuur1 and Figure 2. The concentrated seawater is evacuated by a pipe (white pipe) Figure 1. Figure1 system description Advantages - Produce 190 liters of water per day - The water is more cleaned than other systems, minimum 99,8 % of salt is reduced - Maintenance is easy (RO membrane is removable). - Easy to mount. - Doesn t need pretreatment Inconveniences - Device can be a little bit heavy because the amount of pumps. - Need electricity (because electric pumps)

5 1.2) Description Concept 2(option 2) This option is exactly the same as option 1. In this system, electric pump is replaced by hand pump. The hand pump can produce 10 bar of pressure. The osmoseapparaat is need only 10 bar of pressure to clean the water. Advantages - Produce 190 liters fresh water a day (for few families) - The water is more cleaned than other systems, minimum 99,8 % of salt is reduced - Maintenance is easy (RO membrane is removable). - Easy to mount. - Can produce enough water / hour. - Doesn t electricity - Doesn t need pretreatment Inconveniences - Manual - Hand pump is heavy (42 kg)

6 1, 3) Information parts and price Concept 2 (option2) osmoseapparaat 50 GPD and hand pump This compact 3 stage reverse osmosis unit takes up little space and is equipped with a 50 GPD membrane with a yield of 190 liters of osmosis water in 24 hours at 25 C and 4 bars. For optimum results, and protection of the membrane is the feed water sequentially through a charcoal filter which, inter alia, chlorine, dyes and various other contaminants out of the water. Then, it goes through a 5-micron filter sediment which coarser contaminants great than 5 micron filter and from there the last step is the reverse osmosis membrane which is the main part of the purification accounts for and provides for great clean water. Phase 1: Carbon Filter Stage 2: Sediment Filter Stage 3: RO Membrane This unit is equipped with the following filters and accessories: 1x carbon filter 1x 5 micron sediment filter 1x external flow limiter which ensures the right balance between osmosis and wastewater 1x metal tap connector with 3/4 "thread (standard washing machine) 3x osmosis hose 3m each 2x 2.5 "wall clip to secure the desired osmosis unit to the wall

7 In this model, there is the option to rest with a membrane of the American brand "Filmtec" up the device. Filmtec is a leader in the field of membranes and has decades of experience in membrane technology and has perfected its membranes during this time. You can indicate your preference on the right of the product picture. The amount of dissolved substances on either side of the membrane, and will stop as soon as the water pressure is equal to the osmotic pressure. Hand Pump LHG-10 China manufacture 10 bar Hand Operated Grout Pump US $ / Set (FOB Price) Quick Details Place of Origin: Henan, China (Mainland) Brand Name: LEC Model Number: LHG-10 hand grout pumps Theory: Reciprocating Pump Structure: Piston Pump Usage: grouting Power: hand grout pumps Standard or Nonstandard: Nonstandard Fuel: hand grout pumps Pressure: medium pressure Application: grouting Type: hand grout pumps Certificate: ISO&CE Output: 0-10L/min Pressure: 10bar Cylinder dia.: 110mm Piston stroke: 40mm Inlet dia.: 32mm Outlet dia.: 19mm Dimension: 980*290*590mm Weight: 40kg Electric Pump Max. Pressure 10 Bar Net Weight 5.8 kg Price: AU $

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9 1.4) Conclusion Fortunately concept 2 is very simple compared but it is heavy. The pump only weighs 42 kg. The Filters need to be yearly replaced. Gaza doesn t have those filters. The device can be expensive. The pump cost 100 American dollars exclusive shipping cost. The Osmose device cost 50 Euro but need to be maintained at least once a year and that cost a lot of money.