Activated Carbon Filtration Treatment of Drinking Water
It is used for water and waste water purification for different application like removal of color, BOD, smell, odor, turbidity. Offered filter consists of a pressure vessel that could be either vertical or horizontal-fitted with a set of frontal pipe work and valves. This filter is supported by layers of graded under bed consisting of pebbles and gravels, a top distributor to distribute the incoming water uniformly throughout the cross section of the filter. Activated carbon (AC) is a natural material that is derived from bituminous coal, lignite, wood, coconut shell etc., that is activated by steam and other means. Various blends of carbon can also be used in this Activated Carbon Filter to achieve specific water quality and contaminants reduction (e.g. coconut shell carbon for "sweet taste").
Features:
High strength
Durable finish standards
Sturdy design
Less maintenance
Working Principle
Also refers to multi-layer filter, a typical multimedia filter contains three layers of filter media (anthracite coal, sand and garnet). The principle behind using these three types of filtration media is the difference between particle size and density properties of these materials. Anthracite media is the lightest and largest particle size media, which remains of top following backwash while the intermediate size media (sand) will settle in the middle and garnet, the heaviest but having the smallest particle diameter, will settle to the bottom. Periodically backwashed is mandatory to remove contaminants trapped in the media during filtration process.
Application
Water treatment plant
Feed water of RO plant
Post treatment of wastewater treatment plant
Pretreatment of ion exchange based plant
Iron removal &Fluoride removal
Cooling tower water treatment plant.
Fountain, Water bodies and swimming pool
Rain water harvesting.
Gardening & washing application
River& lake water treatment.
Most frequently used filtration fillings:
Fine gravel: 1-20mm
Silica sand of various roughness: 0.4-2.5mm
Active charcoal: is used for absorption of chlorine and other mineral substances
Anthracite: is used in two-layer or multi-layer filtration of drinking water in connection with sand - the addition of anthracite guarantees a longer filter lifetime, it facilitates a larger filtration through-flow and reduces sand contamination
The filtration bed can be formed by one layer or more layers of various filtration materials. Filtration sand lifetime during a proper washing of filters oscillates around 8 years on a standard basis.
Filters are controlled manually [with ball valves / shut-off valves] or automatically. In the case of an automatic filter control process, membrane or hydraulic or pneumatic valves are used.
The entire automatic process of filtration and back washing of filters is controlled by a central control unit. The control unit makes it possible to set filter washing on the basis of time, pressure difference or filtered water quantity.
Filters are washed, on a standard basis with raw water or with treated water from reservoirs.
Filters are fitted with a filtration inter-bottom with jets. The jets are made of the ABS material and make it possible to wash with water or both water and air. In the case of the filling height not exceeding 1500 mm, the water flushing process is fully sufficient.
Pressure filters are made of carbon steel with a protective anticorrosion coating with epoxy resin in the RAL 5010 [gentian blue] or 5012 [light blue] colour shade. The coating meets the conditions of hygienic harmlessness for contacts with drinking water.
Technical Parameters:
Specifications:
Model |
TANK SIZE
(mm) |
TOTAL HIGH
(mm) |
FLOW RATE
(m3/hr) |
INLET AND OUTLET
(mm) |
YLD-MF-500 |
500*1500 |
2350 |
~2 |
DN32 |
YLD-MF-600 |
600*1500 |
2380 |
2-3 |
DN32 |
YLD-MF-700 |
700*1500 |
2400 |
~4 |
DN40 |
YLD-MF-800 |
800*1500 |
2400 |
~5 |
DN40 |
YLD-MF-900 |
900*1500 |
2500 |
~6 |
DN50 |
YLD-MF-1000 |
1000*1500 |
2600 |
~8 |
DN50 |
YLD-MF-1200 |
1200*1500 |
2700 |
~11 |
DN65 |
YLD-MF-1400 |
1400*1500 |
2800 |
~15 |
DN65 |
YLD-MF-1500 |
1500*1500 |
2850 |
~18 |
DN65 |
YLD-MF-1600 |
1600*1500 |
2900 |
~20 |
DN80 |
YLD-MF-1800 |
1800*1500
1800*1800 |
3000 |
~25 |
DN80 |
YLD-MF-2000 |
2000*1500 |
3100 |
~30 |
DN100 |
YLD-MF-2200 |
2200*1500 |
3180 |
~38 |
DN100 |
YLD-MF-2400 |
2400*1500 |
3330 |
~45 |
DN100 |
YLD-MF-2500 |
2500*1500 |
3380 |
~50 |
DN100 |
YLD-MF-2600 |
2600*1500 |
3430 |
~55 |
DN125 |
YLD-MF-2800 |
2800*1500 |
3530 |
~60 |
DN125 |
YLD-MF-3000 |
3000*1500 |
3630 |
70-80 |
DN125 |
YLD-MF-3200 |
3200*1500 |
3730 |
80~100 |
DN150 |
Frequently Asked Questions About Activated Carbon Filtration
1. What is Activated Carbon?
Carbon is an extremely porous material that attracts and holds a wide range of harmful contaminants. Activated carbon is carbon which has a slight electro-positive charge added to it, making it even more attractive to chemicals and impurities. As the water passes over the positively charged carbon surface, the negative ions of the contaminants are drawn to the surface of the carbon granules.
2. What forms does it come in?
Activated carbon filters used for home water treatment typically contain either granular activated carbon (GAC) or powdered block carbon (carbon block).
3. Which is generally better, GAC or carbon block?
Although both are effective, carbon block filters generally have a higher contaminant removal ratio and are more resistant to channeling.
4. Are all carbon filters equally effective?
No. Activated carbon filters are usually rated by the size of particles they are able to remove, measured in microns, and generally range from 20 microns (least effective) down to 0.5 microns (most effective). The two most important factors affecting the efficiency of activated carbon filtration are the amount of activated carbon in the unit and the amount of time the contaminant spends in contact with it. The more carbon the better. Particle size also affects contaminant removal rates. The most common carbon types used in water filtration are bituminous, wood, and coconut shell carbons. While the coconut shell carbon typically costs 20% more, it is generally regarded as the best of the three.
5. Can I use taste and flow rate to determine when to change the filter?
No. These are very poor methods of monitoring your water filter for maintenance. Once the bad tastes have returned, it is already far too late - contaminants have passed through the filter and into your drinking water. A carbon cartridge may be able to control taste and odors long after the carbon has lost its ability to effectively reduce other toxic contaminants. You should always follow the manufacturer's filter replacement schedule to ensure optimal filtration.
6. What is Backwashing and do you recommend it?
Backwashing is the process of forcing water through a filter in the wrong direction to unclog the dirt and sediment which has blocked the filter. Backwashing is a common practice for certain whole house and commercial units which are treating large volumes of water for utility purposes but it is not a recognized practice for small point of use drinking water systems.
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