【文章內(nèi)容簡(jiǎn)介】 it is firm size, or brand image, all with the other two production bases (Shunde, Guangdong and Shandong Qingdao) differ too much from it as he has been present in Cixi appliance such unspeakable pain entrepreneurial mind. Buying Water Filters Let Me Tell you Something There is a lot of hype and doubtful claims about water filters in the media. It39。s hard for the average consumer to understand the different methods and types of water filtration systems without buying into all the sales talk. Water filtration or treatment in itself is a quite a large topic with many methods and technologies involved. Most household water filters/treatment systems are designed to remove various contaminants such as chlorine, lead, mercury, Volatile Organic Chemicals (VOCs), Total Dissolved Solids (TDSs), Cryptosporidium, Chloramines, pesticides, herbicides, Giardia and other bad smell or taste elements. Feature and Function Differences Most water filters work on the same general process. Water is passed through a filtration agent (physical, chemical or ultraviolet) where contaminants are either removed or neutralized. The treated water is then either dispensed out of the system or is stored in a storage tank for future use. Generally, most water filters are fairly simple and inexpensive items that aren39。t very different from one manufacturer to the next. Below is a list of features and functions which you should consider before buying a water filtration system. 3 1). Filtering Technology The first and most mon sort of filter uses a physical barrier to remove suspended particles such as mud, silt, sand or rust as well as microorganisms such as Giardia or Cryptosporidium. Physical filters are measured by microns. The finer the filter the smaller the micron number and the more types of particles can be removed from the raw water. Another type of filter uses chemical processes to remove or neutralize potentially harmful contaminants in raw water. Depending on the type of contaminant, the filter elements can prise of activated charcoal, copper, zinc etc. The newest form of filtration technology is to use ultraviolet light to destroy bacteria, viruses or pathogens in water. The ultraviolet light is typically encased in a tank whereby the water is treated either when in storage or is run through a ultraviolet canister. The ultraviolet light deactivated the DNA of the organic particulates which ruin their ability to reproduce and cause disease. Typically, a water filtration system will contain more than one type of filter because each filter has its own specific strengths and together enable a much wider spectrum of filtration. 2). System Types There are a few basic types of water filters that range from small portable units to units that can supply an entire house or office. Here are the more mon types: Countertop: These types of filters are placed on top as of the counter as suggested by the name and is connected to the faucet. The system normally has limited capacity while the filtered water is only available at the faucet. Undercounter: These systems are very similar to the countertop systems in that they have smaller capacities and only provide treated water to one faucet. The difference is that these systems don39。t take up valuable counter space however would require more sophisticated plumbing which makes it slightly more expensive. Faucet Mounted: These systems are the cheapest and easies to install however offer the least amount of filtration. The system is mounted on the faucet itself and offers treated water to that faucet alone. Whole House: These water filter systems are typically the most prehensive and costly filter types that will be needed for a house or office. These systems attach to the pipe mains before entering the house/office which means that they will supply treated water to the entire house/office. These water filters are generally quite expensive to buy and maintain however all water in the house is treated. Water Softeners: These types of water filters are used specifically to remove only some types of contaminants, namely unwanted elements such as calcium, magnesium, lime, and iron from a household39。s water supply. These elements make water taste metallic and salty. Dispensers/Pitcher Water Filter: These systems are normally very simple filter assemblies that are built into a Pitcher/Dispenser. Again, this type of filter is very simple and cheap however doesn39。t filter contaminants all that well pared to the more prehensive examples. Portable: These water filters are made to be portable, some are designed for camping and light travel while some are built into sports drink bottles. Interestingly, an ultraviolet light pen is available which should act as a microbe deactivator si