Nut shell activated carbon as part of the wooden activated carbon, mainly USES the high quality coconut shell, apricot shell, peach shell wood raw material, through carbonization, high temperature steam activation and become, the appearance of black particles, with pore developed, adsorption ability, good strength, chemical stability, the advantages of uniform particles, mainly used for drinking water, pure water, beverage, wine, industrial water, power plants, sewage and the depth of the water quality purification and precious metal refining, activated carbon for silver. Activated carbon adsorption is actually the attracting effect of adsorbent for adsorption mass particle. The size of the adsorption performance by the nature of the adsorbent, the size of the surface of the adsorbent, the adsorption properties of the nature and concentration, temperature and the size of the decision. Activated carbon adsorption refers to all kinds of gas, steam and the solute in the solution by suction phenomenon in solid or liquid material appearance. Adsorption properties of the material are called adsorbent. Nut shell activated carbon is the most effective adsorbent, removing water odor peculiar smell the most commonly used to remove the water only powdered activated carbon, nut shell activated carbon. Due to the higher cost of construction and management of powdered activated carbon, but poor operation condition, operating problems, not renewable reuse, is generally advisable for short-term intermittent deodorization treatment and dosing quantity is not high. Construction and management fees, nut shell activated carbon is low, the operation is simple performance is more stable, take longer to use renewable use. Nut shell activated carbon after sewage device generally in the sand filter, in order to reduce the load on the activated carbon filt er.