Peach shell activated carbon water purification is made by many kinds of carbon-containing substances, these materials include wood, sawdust, coal, coke, peat, lignin, stone, hard shell, sugar pulp, bone, lignite, petroleum residues, etc. . Including coal and coconut shell activated carbon has become the most commonly used raw Youdou. The manufacture of activated carbon is basically divided into two processes, the first process including dehydration and carbonization, the raw material is heated at a temperature of 170 至 600 ℃ dried, and about 80% of the original organic matter charring. The second process is to make the charcoal-activated, it is through the use of activators such as water vapor and carbon react to completion in the endothermic reaction is mainly produced mixed gas composed of CO and H2 for burning charcoals heated to the appropriate temperature (800 to 1000 ℃), to burn them all biodegradable material, resulting well-developed porous structure and huge surface area, which has a strong adsorption capacity. Peach shell activated carbon water purification pore by pore size can be divided into three categories. Big hole: Radius 1000 - 1000000 A. Transition hole: Radius 20 - 1000 A. Microporous: radius - 20 A. Activated carbon made from different materials having different pore sizes. Coconut shell activated carbon system with the smallest pore radius. Wood activated carbon generally has the largest pore radius, they are used for adsorption of larger molecules, and almost exclusively in the liquid phase. The first type of granular activated carbon for water treatment in the city that is used in the field is made of wood, called charcoal. Coal activated carbon pore size in between. In the coal quality activated carbon, activated carbon than anthracite lignite activated carbon has more transition pore and larger average pore size, it can effectively remove organic molecules in water. Typically activated carbon used in water treatment, its surface area is not necessarily too large, but should have a higher transition pores and larger average pore size. Japan Market Complex, sold some of the liquid phase activated carbon has the following characteristics: specific surface area of ??850 to 1000m2 / g, pore volume of 0.88 to 1.5ml / g, an average pore radius of 40 to 50A.