METHOD AND APPARATUS FOR PURIFYING WATER.

摘要

A method and apparatus for purifying water by the active carbon regeneration system. Contact of tap water with active carbon fibers having a narrow pore distribution and excellent adsorption velocity enables adsorption and removal of residual chlorine harmful trihalomethanes, and odoriferous substances such as 2-methylisoborneol and diosmin contained in tap water. The use of active carbon fibers having a median pore diameter of about 1.8-3.0 nm, preferably, about 2.0-2.7 nm enables odoriferous substances having large molecular weights to be exhaustively and selectively adsorbed by the carbon fibers. At any time when out of use, the carbon fibers are heated to 100-120 DEG C, whereby the adsorbed trihalomethanes are desorbed and the fibers recover the capacity of adsorbing trihalomethanes. Thus the carbon fibers can, even in a limited quantity, adsorb trihalomethanes and odoriferous substances for long without the necessity for exchanging active carbon fiber cartridges.