Central House Cabinet 2-in-1 Water Softener Mixed with Replaceable Pre-Purifier

Central House Cabinet 2-IN-1 water softener mixed with Double 20"4.5"inline replaceable Jumbo activated carbon pre-purifier specificationsModelSF-T2DescriptionCentral household cabinet 2-IN-1 water softener mixed with Double 20"x4.5"Jumbo replaceable pre-purifierRegeneration TypeDown or Upper-flow flush type Regeneration modeIntelligent/Delay Flowmeter or Timer  regenerationDisplayLCDInlet & Outlet3/4",1"Resin Tank+Pre-purifier1035 Resin Tank, Double 20"x4.5"Inline replaceable filter cartridgeDrain1/2"Base2-1/2"Riser Pipe1.05"ODWater CapacityBack wash->Brine and slow rinse->Fast rinse->Refill->ServiceCabinet sizeCabinet with bypass:368*568*1102mm     Carton Size:475*665*1200mm   Instadllation space:400*580*1200mmContainer Capacity  20GP/40HQ80SETS/180SETS  1. Hard water 1.1 What is hard water? When water is referred to as 'hard' this simply means, that it contains more minerals than ordinary water. These are especially the minerals calcium and magnesium. The degree of hardness of the water increases, when more calcium and magnesium dissolves. Magnesium and calcium are positively charged ions. Because of their presence, other positively charged ions will dissolve less easily in hard water than in water that does not contain calcium and magnesium. This is the cause of the fact that soap doesn't really dissolve in hard water. 1.2 Which industries attach value to hardness of water? In many industrial applications, such as the drinking water preparation, in breweries and in sodas, but also for cooling- and boiler feed water the hardness of the water is very important.     2. Water softening 2.1 What is water softening? When water contains a significant amount of calcium and magnesium, it is called hard water. Hard water is known to clog pipes and to complicate soap and detergent dissolving in water. Water softening is a technique that serves the removal of the ions that cause the water to be hard, in most cases calcium and magnesium ions. Iron ions may also be removed during softening. The best way to soften water is to use a water softener unit and connect it directly to the water supply. 2.2 What is a water softener? A water softener is a unit that is used to soften water, by removing the minerals that cause the water to be hard. 2.3 Why is water softening applied? Water softening is an important process, because the hardness of water in households and companies is reduced during this process. When water is hard, it can clog pipes and soap will dissolve in it less easily. Water softening can prevent these negative effects. Hard water causes a higher risk of lime scale deposits in household water systems. Due to this lime scale build-up, pipes are blocked and the efficiency of hot boilers and tanks is reduced. This increases the cost of domestic water heating by about fifteen to twenty percent. Another negative effect of lime scale is that it has damaging effects on household machinery, such as laundry machines. Water softening means expanding the life span of household machine, such as laundry machines, and the life span of pipelines. It also contributes to the improved working, and longer lifespan of solar heating systems, air conditioning units and many other water-based applications. 2.4 What does a water softener do? Water softeners are specific ion exchangers that are designed to remove ions, which are positively charged. Softeners mainly remove calcium (Ca2+) and magnesium (Mg2+) ions. Calcium and magnesium are often referred to as 'hardness minerals'. Softeners are sometimes even applied to remove iron. The softening devices are able to remove up to five milligrams per litre (5 mg/L) of dissolved iron. Softeners can operate automatic, semi-automatic, or manual. Each type is rated on the amount of hardness it can remove before regeneration is necessary. A water softener collects hardness minerals within its conditioning tank and from time to time flushes them away to drain. Ion exchangers are often used for water softening. When an ion exchanger is applied for water softening, it will replace the calcium and magnesium ions in the water with other ions, for instance sodium or potassium. The exchanger ions are added to the ion exchanger reservoir as sodium and potassium salts (NaCl and KCl). 2.5 How long does a water softener last? A good water softener will last many years. Softeners that were supplied in the 1980's may still work, and many need little maintenance, besides filling them with salt occasionally. 3. Softening salts 3.1 Which types of salt are sold for application in a water softener? For water softening, three types of salt are generally sold: - Rock salt - Solar salt - Evaporated salt Rock salt as a mineral occurs naturally in the ground. It is obtained from underground salt deposits by traditional mining methods. It contains between ninety-eight and ninety-nine percent sodium chloride. It has a water insolubility level of about 0.5-1.5%, being mainly calcium sulphate. Its most important com