Purification Technology
RO
Technology of Reverse Osmosis
Multiple Purification stages bring down excessive TDS level removing all impurities and making the water 100% pure
UV
Technology of Ultraviolet
Ultraviolet (UV) systems destroy 100% of harmful bacteria, viruses and microorganisms without adding chemicals or changing your water’s taste or odor
WTP
Technology of Water Treatment Plant
ETP
Technology of Effluent Treatment Plant
Reverse Osmosis
History of Reverse Osmosis
The process of osmosis through semipermeable membranes was first observed in 1748 by Jean-Antoine Nollet. For the following 200 years, osmosis was only a phenomenon observed in the laboratory. In 1950, the University of California at Los Angeles first investigated desalination of seawater using semipermeable membranes. Researchers from both University of California at Los Angeles and the University of Florida successfully produced fresh water from seawater in the mid-1950s, but the flux was too low to be commercially viable until the discovery at University of California at Los Angeles by Sidney Loeb and Srinivasa Sourirajan at the National Research Council of Canada, Ottawa, of techniques for making asymmetric membranes characterized by an effectively thin "skin" layer supported atop a highly porous and much thicker substrate region of the membrane. John Cadotte discovered that membranes with particularly high flux and low salt passage could be made by interfacial polymerization of m-phenylene diamine and trimesoyl chloride. Cadotte's patent on this process was the subject of litigation and has since expired. Almost all commercial reverse osmosis membrane is now made by this method. By the end of 2001, about 15,200 desalination plants were in operation or in the planning stages, worldwide, with approximately 20 percent of them in the U.S., the largest number of any country in the world.In terms of capacity however, the U.S. ranks second globally
Reverse osmosis production train, North Cape Coral Reverse Osmosis Plant.
In 1977 Cape Coral, Florida became the first municipality in the United States to use the RO process on a large scale with an initial operating capacity of 3 million gallons (11350 m³) per day. By 1985, due to the rapid growth in population of Cape Coral, the city had the largest low pressure reverse osmosis plant in the world, capable of producing 15 million gallons per day (MGD) (56800 m³/d).
What does a Reverse Osmosis Filter System do?
Producing Drinking Water Using Reverse Osmosis
Although Reverse Osmosis seems like a complex system it is really a simple and straightforward water filtration process. And it’s not a new process. High-pressure (pump driven) reverse osmosis systems have been used for years to desalinate* water – to convert brackish or seawater to drinking water. Having a better understanding of how a reverse osmosis system works will eliminate the mystery and confusion you may feel when you look at a reverse osmosis system with its many colored tubes and multitude of filters. Read on to enhance your knowledge of residential reverse osmosis systems.
The most important points to remember
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All Reverse Osmosis Systems work the same way
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Most RO (Reverse Osmosis) systems DO NOT look alike
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We have RO For home use and we have RO for industrial use
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All RO Systems have the same basic components
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The difference is the quality of the filters and membranes inside the Reverse Osmosis system
Advantages of Reverse Osmosis
- Improves taste, odor and appearance
- Highly effective purification process. Will remove the pollutants listed below and more!
- Consumes no energy
- Very convenient
- Flushes away pollutants, does not collect them
- Easy to keep clean
- Low production cost – gives you water of a guaranteed quality for pennies per gallon
- Incoming water pressure
- Water Temperature
- Type and number of total dissolved solids (TDS) in the tap water
- The quality of the filters and membranes used in the RO System (see operating specs)
What are the components of Reverse Osmosis System?
Basic components common to all Reverse Osmosis Systems
- 5 Micron Sediment Filter: With only 5 micron rating. It is effective in removing dirt, rust and sand particles.
- Carbon Block Filter: It takes out 99% of the chlorine and organic chemicals. It provides enhanced reduction of taste, odor, and color.
- 1 Micron Sediment Filter: With only 1 micron rating, provides effective filtration to protect your membrane. It provides for improved membrane performance up to 95% of TDS rejection.
- Reverse Osmosis Membrane: The Reverse Osmosis Membrane is the heart of the system. The most commonly used is a spiral wound of which there are two options: the CTA (cellulose tri-acetate), which is chlorine tolerant, and the TFC/TFM (thin film composite/material), which is not chlorine tolerant.
- Post Carbon filter: This carbon post filter removes objectionable tastes and odors to enhance the quality of your drinking water. We are using NSF approved post carbon to guarantee the taste of water.
Optional Stages, can be added with any typical RO system
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Alkaline filter: The Alkaline filter changes the acidic RO water into a perfect Alkaline lionized Water. The PurePro® Alkaline filter simply gives back minerals such as ionized calcium, magnesium, sodium, potassium ion, which were taken away while purifying the water. Produces alkaline water which helps your maintain a healthy pH level. The PurePro® Alkaline filter is effective and give the water pH value of 8.00~9.5.
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Infra-Red Filter: This Infra-Red filter can activates water molecules in our body and improves oxygen level in our body. Warming and eliminating fats, chemicals and toxins from our blood and thus smoothening the flow of blood.
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Deionization (DI) filters: De-mineralize filter takes the full size RO to a higher level of filtration. It is an excellent inline filter, especially those who live in areas with exceptionally high levels of TOTAL DISSOLVED SOLIDS (TDS) in their tap water. The post deionizer takes the small percentage of contaminants that the membrane could not remove and filters this to greater than 99.99% pure. It will give you 0 ppm TDS, Conductivity attainable less than 0.1uS/cm or resistivity of close to 18 meg.ohm
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Ultraviolet Water Sterilizer: Ultraviolet light (UV), a natural part of the sunlight is widely accepted as a reliable, efficient & environmentally friendly solution for water disinfection. This UV lamp utilizes the application of particularly efficient UV radiator with a 254nm wave length to cause immediate death for organisms and wipe out their ability to survive and reproduce. 99.99% Destruction of bacteria and viruses.
Electrical Parts
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Check Valve: A check valve is located in the outlet end of the RO membrane housing. The check valve prevents the backward flow or product water from the RO storage tank. A backward flow could rupture the RO membrane.
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Flow Restrictor: Water flow through the RO membrane is regulated by a flow control. There are many different styles of flow controls. This device maintains the flow rate required to obtain the highest quality drinking water (based on the gallon capacity of the membrane). It also helps maintain pressure on the inlet side of the membrane. Without the flow control very little drinking water would be produced because all the incoming tap water would take the path of least resistance and simply flow down the drain line. The flow control is located in the RO drain line tubing.
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Storage Tank: FDA Approved & NSF Standards Water Storage Reservoir. A bladder inside the tank keeps water pressurized in the tank when it is full.
It’s everyone’s right to clean, safe water.
Get your RO System and start purifying by yourself by simply reaching us at:
+88 01755 551875
+88 01709 634946
+88 01713 042020
Ultraviolet (UV)
History of Ultraviolet (UV)
In 1878, Arthur Downes and Thomas P. Blunt published a paper describing the sterilization of bacteria exposed to short-wavelength light. Ultraviolet (UV) has been a known mutagen at the cellular level for over 100 years. The 1903 Nobel Prize for Medicine was awarded to Niels Finsen for his use of UV against lupus vulgaris, tuberculosis of the skin.
Using UV light for disinfection of drinking water dates back to 1910 in Marseille, France.The prototype plant was shut down after a short time due to poor reliability. In 1955, UV water treatment systems were applied in Austria and Switzerland; by 1985 about 1,500 plants were employed in Europe. In 1998 it was discovered that protozoa such as cryptosporidium and giardia were more vulnerable to UV light than previously thought; this opened the way to wide-scale use of UV water treatment in North America. By 2001, over 6,000 UV water treatment plants were operating in Europe.
Over time, UV costs have declined as researchers develop and use new UV methods to disinfect water and wastewater. Currently, several countries have developed regulations that allow systems to disinfect their drinking water supplies with Ultraviolet (UV) light.
What is UV Water Purification?
Ultraviolet or “UV” is a type of energy found in the electromagnetic spectrum, lying between x-rays and visible light. Although we cannot see UV light or rays, we are exposed to them every time we step out into the sun. In fact, UV light is responsible for causing sunburns.
UV Water Purification systems use special lamps that emit UV light of a particular wavelength that have the ability, based on their length, to disrupt the DNA of micro-organisms. These UV light waves are also referred to as the Germicidal Spectrum or Frequency. The frequency used in killing micro-organisms is 254 nanometers (nm). As water passes through a UV water treatment system, living organisms in water are exposed to UV light which attacks the genetic code of the microorganism and rearranges the DNA /RNA, eliminating the microorganism's ability to function and reproduce. If a microorganism can no longer reproduce, it cannot replicate, therefore it cannot infect other organisms with which it has contact. This process of exposing water to UV light is simple but effective, destroying 99.99 percent of harmful microorganisms without adding any chemicals to water.
Contaminants that UV Addresses
| Viruses |
Typhoid Fever |
| Bacteria |
Flu |
| Cysts |
Polio |
| Coliform |
Dysentery |
| Salmonella |
Cholera |
| Giardia |
Meningitis |
| E.coli |
Infectious Hepatities |
| Cryptosporidium |
|
How does Ultraviolet Sterilization Work?
Many water purification systems take advantage of a UV water sterilizer even after processing their water. This is a well-known practice. Companies like Puritech highly recommend UV sterilizers as a post treatment when treating water. Throughout the years ultraviolet technology has become well established as a chosen method for effective and economical water disinfection. Ultraviolet water sterilization claims many advantages: All microorganisms are virtually susceptible to ultraviolet disinfection. For every penny of operating cost, hundreds of gallons of water are purified. NO additional chemicals are added and there’s no danger of overdosing. Once the water leaves the purifier, it is ready for use with no further contact time required. It has simple and easy to install and maintain. Compact units need a small space to operate and store. Ultraviolet water sterilizers deliver ongoing disinfection without special attention or measurement. There are no detections of chlorine taste or corrosion problems.
Only drink water that's purified in front of your eyes
Water Treatment Plant (WTP)
History of WTP
Early water treatment methods still used included sand filtration and chlorination. The first documented use of sand filters to purify the water supply dates to 1804, when the owner of a bleachery in Paisley, Scotland, John Gibb, installed an experimental filter, selling his unwanted surplus to the public. This method was refined in the following two decades, and it culminated in the first treated public water supply in the world, installed by the Chelsea Waterworks Company in London in 1829.
Further information: History of water supply and sanitation
Technology of Water Treatment Plant (WTP)
As people become increasingly aware of the benefits of purified water, the demand for equipment capable of treating both municipal and well water supplies continues to grow. As a result, Industrial/commercial Reverse Osmosis systems are becoming widely accepted. We carry a wide variety of RO systems, one of which will fit your application and your budget.
Reverse osmosis (RO), also known as hyper filtration, is used by our Commercial & Industrial Brackish Water & Seawater Reverse Osmosis Systems to purify water by removing salts and other impurities. It is also capable of rejecting bacteria, sugars, proteins, particles, dyes, and other constituents that have a molecular weight of greater than 150-250 daltons.
Major equipments of WATER TREATMENT PLANT (FOR DRINKING ) and their activities
- Feed pump: To feed the water from reservoir to Multi Media Filter
- Multi Media Filter: To remove Iron & Arsenic
- Carbon filter: To adjust color, odor & bad smell from water, to absorbed access chlorine and to make the water crystal clear.
- Water Softener: To reduce water hardness.
- Micron Filter: To remove micro flock greater than 5 micron
- High Pressure Pump: To supply the water through RO membrane with high pressure
- RO Unit: To remove about (95-98)% of all parameters from water with bacteria as well as virus. (Membrane Pore size 0.0001 Micron)
- Ozone Generator: To reduce microbial contamination.
- UV Sterilizer: To remove microbial contamination as well to destruct the ozone residual.
- Storage Tank: To reserve treated water.
- Electrical Control Panel: To control the electrical equipments.
- Auto Sensor: To control the machine’s On/Off automatically.
