Made in Taiwan 10" UDF Activated Carbon Water Filter Cartridge / RO Water Filter Parts
The Marking on end cap ( cap color is optional and can be customized):
| Item No. | TWDC-GAC-10 |
| Size | 2 3/4" OD x 9 3/4" Length |
| Carbon | Activated Granular Carbon |
| Min./Max.Operating Pressure | 20psi/125psi |
| Min./Max. Temperature | 4°C/38°C |
| Max.Operating Temp. | 50°C |
| Max. Flow Rate | 1 GPM |
| Capacity | 2,500 gallons |
Water purification removes harmful contaminants from water. Filtration, which physically blocks or chemically removes contaminants, is a different purification technique from reverse osmosis, which filters water through a semi-permeable membrane, and distillation, which vaporizes water to separate it from the contaminants. Carbon filtration is a relatively cheap and efficient way of to purify water.
Carbon filters work so well because of their large surface area. According to the Home Water Purifiers and Filters website, one pound of carbon has a surface area of approximately 125 acres. This allows carbon to physically absorb a large amount of chemicals and substances that pose serious dangers to the normal domestic water supply. Many of these substances can cause cancer, neurological problems and other health risks if ingested in large quantities.
There are generally two types of carbon filtration: granular activated carbon and block carbon. Activated carbon has a slightly positive charge so it can attract impurities, but block carbon has a higher contaminant removal ratio. However, there are many factors that affect this rate, including the amount of carbon in the unit, the flow of water, the length of time contaminants spend in contact with the carbon and the particle size. Carbon can remove particles 50 micrometers to 0.5 micrometers in size.
Carbon filters are very effective at removing a number of deleterious chemicals, reports the Home Water Purifiers and Filters site. These include chlorine, benzene, radon, solvents trihalomethane compounds, volatile organic chemicals such as pesticides and herbicides and hundreds of other man-made chemicals that may come into contact with tap water as it proceeds through the system. In addition, filters remove bad tastes and odors from the water.
Carbon filters are not particularly successful at removing dissolved inorganic contaminants and heavy metals such as minerals, salts, antimony, arsenic, asbestos, barium, beryllium, cadmium, chromium, copper, fluoride, mercury, nickel, nitrates, selenium, sulfate, thallium and other contaminants, which may require a reverse osmosis system or distiller instead. Carbon block filters can remove some large, dangerous microorganisms, such as giardia and cryptosporidium, that can cause a number of diseases and epidemics, but nothing less than the size of the carbon itself. Viruses are too small to be removed by carbon, as they usually range between 20 and 400 nanometers in size, according to the University of Oregon.
Carbon filters are even more effective if you ad physical or chemical absorption to the mix. Iron, manganese and hydrogen sulfide can be removed by high quality carbon filters, but a manganese iron reduction filter is generally more effective at removing these particles, especially at higher concentrations. A sediment pre-filter is better at removing sediment and particulate material, and extends the life of the carbon filter by preventing clogs, according to Home Water Purifiers and Filters.
Activated carbon is commonly used to adsorb natural organic compounds, taste and odor compounds, and synthetic organic chemicals in drinking water treatment. Adsorption is both the physical and chemical process of accumulating a substance at the interface between liquid and solids phases. Activated carbon is an effective adsorbent because it is a highly porous material and provides a large surface area to which contaminants may adsorb. The two main types of activated carbon used in water treatment applications are granular activated carbon (GAC) and powdered activated carbon (PAC).
GAC is made from organic materials with high carbon contents such as wood, lignite and coal. The primary characteristic that differentiates GAC to PAC is its particle size. GAC typically has a diameter ranging between 1.2 to 1.6 mm and an apparent density ranging between 25 and 31 lb/ft3), depending on the material used and manufacturing process. The bed density is about 10 percent less than the apparent density and is used to determine the amount of GAC required to fill a given size filter. The uniformity coefficient of GAC is quite large, typically about 1.9, to promote stratification after backwashing and minimize desorption and premature breakthrough that can result from mixing activated carbon particles with adsorbed compounds with activated carbon particles with smaller amounts of adsorbed compounds. Iodine and molasses numbers are typically used to characterize GAC. These numbers describe the quantity of small and large pore volumes in a sample of GAC. A minimum iodine number of 500 is specified for activated carbon by AWWA standards.
The two most common options for locating a GAC treatment unit in water treatment plants are: (1) post-filtration adsorption, where the GAC unit is located after the conventional filtration process (post-filter contactors or adsorbers); and (2) filtration-adsorption, in which some or all of the filter media in a granular media filter is replaced with GAC. Examples of these configurations are shown in Figures 1 and 2, respectively.
In post-filtration applications, the GAC contactor receives the highest quality water and, thus, has as its only objective the removal of dissolved organic compounds. Backwashing of these adsorbers is usually unnecessary, unless excessive biological growth occurs. This option provides the most flexibility for handling GAC and for designing specific adsorption conditions by providing longer contact times than filter-adsorbers.
In addition to dissolved organics removal, the filter-adsorber configuration uses the GAC for turbidity and solids removal, and biological stabilization. Existing rapid sand filters can frequently be retrofitted for filtration-adsorption by replacing all or a portion of the granular media with GAC. Retrofitting existing high rate granular media filters can significantly reduce capital costs since no additional filter boxes, underdrains and backwashing systems may be required. However, filter-adsorbers have shorter filter run times and must be backwashed more frequently than post-filter adsorbers (filter-adsorber units are backwashed about as frequently as conventional high rate granular filters). In addition, filter-adsorbers may incur greater carbon losses because of increased backwashing and may cost more to operate because carbon usage is less effective.
Founded in 2003, Taiwan Double Plastic Injection Co., Ltd.(Known as TWDC) is a Taiwan premier injection mold
expert provide customers turnkey solutions of water treatment components and plastic injection molds.
WHAT WE DO
With strong mechanical engineering background and experiences TWDC supply worldwide customers the
following products and services:
With strong R&D capability TWDC have patent certificates for innovative products
Q1. Are you a manufacturer or a trading company?
Ans: We are a manufacturer and own 2 factories located in Taichung Taiwan to produce water treatment components and plastic injection moulds. We also manufacture Reverse Osmosis Water System and residential water filtrtaion systems supply dometic and international markets at OEM/ODM basis.
Q2. Are you able to supply OEM/ODM service?
Ans: Yes. We have R&D team to comply with customized demand of new products.
Q3. What is your payment term?
Ans: Basically we accept 50% by T/T as deposit, 50% by T/T before shipment.
Payment Term is negotiable.
Q4. What is your MOQ?
Ans: It is varied with items. We will mark on the quotation right after receiving your inquiry.
Q5. What is your lead-time?
Ans: It is varied with items and quantity. Normally it takes 1~7 working days for ready products.
We will mark the lead-time on the quotation right after receiving your inquiry.
Q6. May I visit your factory?
Ans: Yes! We sincerely welcome you to visit our factory to see our facilities and production lines.
| Contact Person : | rowell |
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