Examples of filtration efficiency of the Pure Water unit for various substances in water INORGANIC SUBSTANCES - turbidity - pigmentation Cations/Metals - sodium - potassium - calcium (total hardness) - aluminium - iron - manganese Cations/Heavy metals - copper - lead - zinc - mercury - cadmium - chromium - nickel Anions - fluoride - chloride - nitrate/nitrite - sulphate ORGANIC SUBSTANCES Hydrocarbons - octane, decane, heptane, etc. - benzene, toluene, xylene, ethyl benzene, etc. - diesel oil Polyaromatic hydrocarbons - PAH Chlorinated hydrocarbons - halomethanes, haloethanes, haloethenes, etc. % >99 >99 >96 >97 >99 >99 >99 >99 >99 >99 >99 >99 >99 >98 >99 >99 >98 >97 >97 >98 >99 >99 >99 >99 Trihalomethanes (THM) - trichloromethane - bromodichloro/dibromochloro/tribromomethane Pesticides - PCBs Microorganisms - bacteria and viruses >60 >99 PURE WATER >99 >99 N.B. The values for the inorganic substances have been measured in a water sample taken after 2 minutes of operation at a flow of 4.4 litres per minute, 80% water efficiency and using test water with a salt content of 800 mg per litre and at a temperature of 20°C. Analysis laboratory: VVL Stockholm, Sweden. The values for the organic substances have been measured in a water sample taken after 2 minutes of operation at a flow of 2.8 litres per minute, 80% water efficiency and using test water to which the relevant substance has been added to a concentration which is 100 times higher than the lowest detectable content at 10°C. Analysis laboratory: AnalyCen, Lidköping, Sweden. Microbiological investigation has been carried out under a variety of operating conditions using test water containing a very high number of micro-organisms. Water samples were taken weekly after 20 and 40 seconds and after 1, 2, 6, 12 and 18 minutes of operation. Investigating laboratory: SVELAB, Jönköping, Sweden. Specification and installation particulars Flow rate 2.5 (+0.3) l/min at 15°C and a salt content of <800 mg/l. The flow increases with increasing temperature. Water efficiency approx. 60-80% during operation (water efficiency is the ratio of pure water produced to water supplied). Water flow rate >10 l/min Mains water pressure 150 - 1000 kPa (1.5 - 10 bar) Water temperature/ Air temperature 5 – 30°C/2 – 43°C Ambient humidity 25 - 95% Power supply 230 V, 50 Hz, 10 A, earthed Power demand 530 W AB SIBE International P.O.Box 8083, Mamrevägen 3 - 5 SE-163 08 SPÅNGA, Sweden Phone: +46 8 761 75 00 - Fax: +46 8 761 09 90 E-mail: [email protected] Home page: www.sibeinternational.com V.A.T No. SE556182200701 Demands on the supply water salt turbidity conductivity pH value calcium: Ca2+ magnesium: Mg2+ mg/l hardness, iron: Fe2+ manganese: Mn silicon: Si COD-Mn: O2 <1500 mg/l <1 FNU* <1000 µS/cm 4 - 10 <140 mg/l <140 mg/l <20°dH <0.8 mg/l* <0.2 mg/l* <10 mg/l *an extra prefilter is necessary if the value is higher. Dimensions width depth 225 mm 460 mm (395 mm without handle and hoses) height weight - empty weight - in operation Distributor: 466 mm 29 kg 33 kg 5556 Roos Tryckerier AB, Sundbyberg 1999 Purification method reverse osmosis Pure water for air humidification systems Water that has been purified in the PURE WATER reverse osmosis system is basically entirely free from lime and other minerals. If this water is used for air humidification, it will eliminate the problem of the fine dust that would be deposited in premises and ventilation ducts if untreated water were used for air humidification. While eliminating the 'white dust', the PURE WATER unit also reduces the amount of bacteria and viruses in the air by more than 99%. If this water is used for steam humidifiers for demineralised water a very accurate humidity control will be ensured and the operation of the humidifier will be virtually maintenance-free. PURE WATER The PURE WATER unit features periodic automatic flushing designed to prevent capacity-reducing deposits on the membrane. Purified water Raw water supply Patented recirculation pump ensures high water efficiency Water strainer that removes larger particles PURE WATER is a highly environment-friendly water purification technique, since it uses no chemicals whatever. The PURE WATER unit contains three filters to protect the membrane. The first is an inlet strainer which removes larger particles that could damage the membrane. This is followed by a replaceable particle filter that reduces the amount of sand and rust flakes in the water. The third filter which is also replaceable - contains activated carbon which reduces the chlorine content as well as odours and tastes by adsorbing organic substances. The impurities are then automatically flushed away to keep the membrane clean, which substantially extends the useful life of the membrane. Contaminated water to waste Filter 2 - activated carbon - reduces chlorine, odours and tastes A semi-permeable membrane divides the filtered water into two flows: - Purified water - Contaminated water The PURE WATER unit has a very high water efficiency. The secret behind this is the patented circulation pump which circulates water at a high flow rate and a high velocity along the surface of the membrane. Filter 1 - particle filter removes particles such as sand and rust flakes Particle sizes in water solution The PURE WATER unit can be connected directly to a humidification plant, to an accumulator that distributes water to humidifiers, or to an unpressurized clean water tank with distribution pump for delivering water over longer distances or for compensating for large differences in head. To meet high water flow rate demands, several water purifiers can be connected to a humidification plant or plants. The water quality obtained in the PURE WATER unit is continually monitored and indicated by means lamps on the front panel. If the performance should deteriorate for any reason, the water purifier will be stopped and a warning lamp will light up. Lamps on the front panel also indicate when various filters must be changed. The PURE WATER unit is also equipped with an automatic alarm and emergency stop function for the water purifier in the event of leakage. Reverse osmosis – Pure Water Due to the water recirculation, the pure water produced can amount to around 80% of the incoming water. Activated carbon and particle filter Activated carbon filter Salt Nitrite Nitrate What is pure water? Pure water consists exclusively of H2O, i.e. a combination of the two elements of hydrogen and oxygen. In this leaflet, pure water describes the water quality, which means that the contents of bacteria, harmful substances and particles in the water are effectively reduced, and the water thus has a good taste, looks clear, does not smell and, above all, does not contain the lime and minerals that would cause dust if untreated cold water were used for air humidification. The PURE WATER unit can be installed together with all units in the comprehensive SIBE SWEDFOG® range of air humidifiers. It can also be installed together with other air humidifier makes and types that are capable of withstanding demineralised water. Heavy metals THM Viruses Bacteria Pollen Human hair Sand Particle sizes in water solution 100 pm 1 nm (1 nm = 0.000001 mm) 10 nm 100 nm 1 µm 10 µm 100 µm 1 mm (1 µm = 0.001 mm) Visible with the naked eye What is reverse osmosis? The phenomenon of osmosis was described in the 18th century. Water is purified and transported in Nature by osmosis, such as in the human body or in plants. Osmosis is of great importance in a living organism, where the cell walls serve as the membrane through which nutrients and metabolic products are transported. Reverse osmosis (RO) is the name given to osmosis used by technical means. By applying the contaminated liquid and raising its pressure, water is forced through a synthetic semi-permeable membrane which, in practice, passes only water (water molecules). The great benefit of reverse osmosis is that no chemicals are used in the treatment process.