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The Most Tough Undesired Components and Pollutants in Water Pipes 1. Scale and Water Hardness 2. Corrosion and Rust 3. Bacteria and Algae 1. Scale and Hard Water Problems Water with higher content of alkali earth (Ca, Mg), bicarbonates is called hard water. How do you recognize hard water? •Hard water prevents soap from lathering by causing the development of an insoluble precipitate in the water. Origin of ions that cause hardness in natural waters •As ocean water evaporates, it form clouds, which condenses and precipitates rain. •As rain water falls it encounters carbon dioxide and reacts with it to form a mild acid (Carbonic Acid). CO2 + H2O = H2CO3 •Thus as rain water comes into contact with limestone in the earth, the limestone dissolves and goes into solution with the water. CaCO3 + H2CO3 = Ca + 2 HCO3 Surface waters also encounter carbon dioxide from the decay of organic materials. As these waters contact limestone, the limestone gradually dissolves and goes into solution. How hard water is formed in nature? When the concentration of calcium and bicarbonate increases due to the intensive reactions of rain water when it falls on carbonate rocks this may cause water hardness. The main problem associated with the use of hard water in the different applications is scale •Scale is a precipitate deposited on surfaces (e.g. inner pipe surfaces) that are in contact with water. •Scale forms rocklike deposits inside and/or on water pipes and equipments. 1.The degree of supersaturation (high saturation index enhances scale formation) Ca2+ + 2 HCO3- CaCO3 + H2O + CO2 2. Temperature (increase temperature, decreases solubility of CaCO3 and enhances scale formation) 3. PH ( increase PH, decreases solubility of CaCO3 and enhances scale formation) 4. Organic Processes Orthorhombic Aragonite Hexagonal Calcite •Limescale is only a problem if calcium carbonate precipitates as hexagonal calcite crystals. •Orthorhombic aragonite crystals, which are 19 times more soluble than calcite, are less prone to form hard scale. Calcite crystal seed needs a surface (the wall of the pipe) to precipitate upon. Aragonite may nucleate in solution and form soluble substance which does not adhere to surfaces CaCO3 Crystal Structures Aragonite Calcite A B Electron microscope photographs for water samples with (A) and without (B) scale Magnification 2000x Scale Problems •It is common that calcium carbonate scale to adhere to the inner wall of the pipes. This causes the following problems in the pipe networks: 1.Reduction in the flow rate. This may require increased pressure to maintain the water flow. 2. Reduction in the efficiency of heat exchangers. 3. Increasing the cost associated with operating systems using water conduits. 2. Corrosion and Rust Problems • Corrosion is the result of some bacterial and/or chemical reactions inside pipes. •Rust is a combination of trivalent iron with oxygen i.e. ferric oxide (Fe2O3). Corrosion leads to biting the water pipes. This ends up to great maintenance costs. 3. Bacteriological Problems Bacteriological Problems 1. Sulfate Reducing Bacteria (SRB) 106H2O 5(CH20106(NH3)l6(H3PO4 + 55S34O4 2 ) H2O + CO2 H2CO3 Ca2+ + 2 HCO3- 106CO2 + 16NH3 + 5532S + H3 PO4 H2CO3 H+ + HCO3CaCO3 + H2O + CO2 This kind of bacteria is catastrophic for pipe network via: enhancing scale, poising water and causing pipe biting. 2. Infectious bacteria, algae and viruses •These include pathogenic (disease producing) bacteria, viruses, algae and protozoans (microorganisms). •These organisms constitute a major problem for drinking water potability. Water treatment is a process of making water suitable for its different applications and uses. The most tough water treatment processes include: 1. The removal of scale and water hardness (water softening). 2. The removal of bacteria, algae and other organic compounds. 3. The prevention of corrosion of water pipes. These water treatment processes may involve physical, chemical and biological methods . •Chemical •Flushing out the system with acid, •Corrosive (early renewal of piping), •Bad for environment, •Plant shutdown necessary, •Recurring expenses •Physical •Friendly for the environment, • No corrosion, •No plant shutdown necessary, •One time investment, •Capital equipment last longer •Mechanical • Labor intensive, •Plant shutdown necessary, • Recurring expenses •Magnetic •Electrolysis (Static electric field). •Of restricted use (Not suitable for large pipe sizes) •Needs mechanical filter up stream. • Low effectiveness. •Friendly for environment. • Invasive. • Low effectiveness. •Electrodes corrode and will have to be renewed. •Electromagnetic •No filter upstream required •No chemicals needed •No maintenance •Life span over 20 years •No pollution. •No restrictions in pipe size •Removes old carbonate scale layers. •Friendly for environment. Methods of Bacteriological Control Chlorination •This process may be harmfull for man health in many instances. • You may always add some disinfection byproducts (trihalomethanes, like chloroform) Ozonation •Ozone treatment can create undesirable byproducts that can be harmful to health (e.g., formaldehyde and bromate). Ultra Violet (UV) •UV radiation is not suitable for water with high levels of suspended solids, turbidity or soluble organic matter. Methods for Corrosion Prevention Anti-corrosion chemicals And Know After we have talk about water problems and the conventional solutions, which themselves may become extra problems What is the new technology we have? And why we believe that it offers the perfect solution for: Scale and water hardness problems Pipes Corrosion and Rust Bacteria and other harmful organisms It is an electronic equipment that get use of a natural (Physical) phenomenon in solving the most tough problems of hard water, scales, corrosion and bacteria. It is the time of Science. It is the time of technology Just relax and let Descaler works Reduced maintenance expenses No undesired hard scale in pipework Extended equipment life No more chemicals Bacteriological control Reduced corrosion Improved water texture Prevent decreasing the heat exchange efficiency Easy installation Can be installed on all types of pipes (steel, copper, plastic) Environmental-friendly operation Payback typically 3-12 months How it Works? •The Descaler microprocessor based devise creates a specially designed frequency-modulated time-varying electromagnetic fields through the inductor coil unit, which are wrapped around the supply pipes. The Technology The electromagnetic waves varies in three ways: polarity, frequency and amplitude. •Polarity changes from positive to negative many thousands of times per second. •Frequency varies from 2,000 cycles per second to 7,000 cycles per second. That range of frequencies is wide enough to affect the water and the materials in the water. •Amplitude varies from 0 milliamps to 250 milliamps. This means that the water molecules and the material in the water are being subjected to a wide range of field forces. Electromagnetic waves Pipe Wall Scale Water Bacteria Ions Ca HCO3 Ca Induced Electromagnetic Waves Will Exert an Effect on Five Things Inside The Pipe •The alternating or switching directions of the Electromagnetic Multi-Frequency Fields uniquely created by the Digital Descaler rotates the ionized calcium and bicarbonate molecules toward alignment with the changing field. •This rotation for alignment agitates the molecules and breaks the bonds between the molecules and bonded water molecules. •The oppositely-charged ions (i.e. Ca2+, HCO3-) will then be forced to move in opposite directions, thereby producing collisions. •This may result in the formation of microscopic nuclei that cause the calcium carbonate to precipitate within the water (in the form of aragonite), instead of on the surfaces of pipes, as hard insoluble calcite and thus prevents the formation of new scale. When the Ca and HCO3 ions are freed in solution why they combine to form aragonite and not calcite? The answer is: Only aragonite polymorph can be formed at this higher energy level Electromagnetic Descaler Effectiveness Descaler Treatment Descaling effectiveness can be easily verified by a simple experiment: •Water with hardness of 300 – 400 ppm, PH=9, TDS=1500 ppm approximately are placed in two containers. •In each container, a small pump is used to circulate the water through a transparent hose . •The water in both containers is then heated to 70 degree C to promote the growth of hard scale . •In one of the containers, the transparent hose is passed through the Descaler unit for treatment. The other act as a control with no treatment . •After 2-3 hours, it can be seen that the hose transporting water treated by the Descaler remains very clear without any scale deposit. •The hose of the control has significant quantity of hard scale deposited along the hose wall . Descaler •When the calcium and bicarbonate ions are removed from water in the form of inert aragonite: •The water loses some of its alkalinity and becomes undersaturated with calcite. •This makes the water capable to attack the old scale surrounding the pipe wall and dissolve it. Before treatment 1 month after 3 month after The induced stream of electrons transform trivalent iron into divalent iron. Rust particles are dislodged and flushed out until a protective film of saturated ferrous oxide is formed inside the pipe. •Alternating and pulsed electromagnetic fields have been shown to inhibit bacterial growth. •Moreover, it is evident that scale is an optimum substrate where Bacteria (e.g. sulfate reducing bacteria) live. •Removing of scale using Descaler will provide an environment not suitable for bacteria, algae to live. Water Molecular Structure H2O molecules link up to each other because of the dipole nature of the individual H2O molecules. electromagnetic fields may There is a trade-off between affect the bonding strength the covalent and hydrogen bond strengths; the stronger The breakage of bonds may be is to the H····O due the morehydrogen energeticbond, the weaker states createdthe by O-H the covalent bond, and the fields shorter the electromagnetic O····O distance. Covalent bond H O H H O Hydrogen bond WHAT IS "WETTER WATER" •"Wetter Water" is the result of reduced covalent hydrogen bonding between adjacent water molecules. •The surface tension will be reduced and separated water clusters may be formed. •It is more reactive • Enables soap and detergent to break up into smaller groupings and interface with the smaller H2O groupings. Descaling Effect •Existing hard scale in pipelines/equipment surfaces will disintegrate after weeks or months of treatment with the Descaler. •Saving in energy consumption and regulating heat exchange due to scale prevention and removal . •Cleaner system resulting in lower bacteria level . •No corrosive pipes anymore. •Enhanced Bacteriological Control •Reduced Scaling •Enhanced Heat Transfer COOLING TOWER WATER CONDITIONING Evaporation cooling tower Dissolved deposits removed from the cooling tower within 4 weeks •In Europe this physical treatment technique is today installed in more than 3500 cooling towers. •It takes only 3 to 6 months to dissolve 2 tons of solid impurities from the coiller in a cooling tower after the installation of the chemical free Descaler physical water treatment •No expensive chemical additives, • no environmentally pollution and • pay back time is in general less than 7-8 months! •Further the reduced water surface tension increases dispersion of the water drops. Thus, a better heat exchange and cooling effect. •No more Fouling •Bacteriological Assistance •Reduced Scaling •Enhanced Cleaning •Reduction in Chemical Usage Reduced Calcite Scaling Enhanced Thermal Heat Transfer Fouling Elimination Our Children Deserve It A glass of water with •No bacteria •Less Chlorine •No impurities •Even distilled water you purchase in plastic bottles at the store will eventually have some carbon dioxide (CO2) from the air dissolved in it forming a weak acid (carbonic acid). •Ca and Mg are considered undesirable contaminants for forming scales inside water pipes regardless of the salinity •In the USA in 1994-1995, there were 3,641 water purification utilities in the US that reported violating the federal health standards for fecal bacteria contamination. •The "Wetter Water" penetrates soil better and faster. •Salt and scale-dissolving properties of treated water increase its ability for leaching away excess salinity accumulated in the soil. •Healthier and Stronger Plants •Grow Faster without Genetic Modification Concrete and Cement Manufacture •Up to 18% Stronger Concrete •Less Water Required •Increase the consistence volume by 3 to 6 cm. •Reduce the water consumtion and cement volume. •Less additives required. •The water overall at the pool has improved •Scum deposits are removed from around the pool edge. •Steel fittings return to their former pristine condition. •Lime scale is removed from within the swimming pool plant. •Stabilizers are no longer required to correct the pH balance. •Less chlorine usage •The shower heads were cleaned Sheraton Hotel and Towers in Riyadh Three different areas of the Sheraton Hotel were fitted with anti-scale units, These were:•the main water supply to the Guest rooms, Kitchens, Laundry and other Service areas •the Swimming Pool and •the Calorifier room The manufacturers of the humidifiers, Anstan Technologies, South Africa, have recommended the use of AquaVantage as a retro-fit to all their existing 5000+ customers and have specified AquaVantage as a supplied option to their units. Photo after one week Photo after two weeks Photo after three weeks NEW SCALE ELIMINATED AND EXISTING SCALE REMOVED •Remove scale from pipe work •Remove scale from calorifiers •Reduce the scale in desalinization equipment •Help maintain a constant water pressure •Increase the life of capital equipment •Reduce scale in water-fed galley equipment •Reduce lime scale build-up from around baths, basins & sinks •Combat scale build-up in shower heads •Reduce maintenance of seawater cooled diesel engines •Reduce cleaning costs, chemicals & labor •Provide a short term payback