Nutshell activated carbon has good abrasion resistance, gap developed, high adsorption performance, high strength, easy regeneration, economic and durable, it is widely used in domestic, industrial, liquid adsorption, water purification, gas adsorption. Especially suitable for power plants, petrochemical, refinery, textile printing and dyeing, food and beverage, pharmaceutical water, electronic high water, drinking water, industrial water reuse and other industries. Composed of carbonization, activation, superheated steam catalytic extensive domestic, industrial, liquid adsorption, water purification purposes of drinking water and industrial wastewater deep purification raw coconut shell, peach shell, walnut shells, shells and other dates husk used in food, beverage, Pure water filtration foreign names Nut shell activated carbon advantages of abrasion resistance, high strength, easy regeneration Chinese name shell activated carbon factory in Henan, China bath water purification plant material a Nutshell Introduction black granular activated carbon [1], high-quality apricot shell , peach shell, walnut shells, shells and other dates husk as raw materials, the use of activated charcoal carbonization, activation, superheated steam catalytic refining process, the appearance of black amorphous particles, processed by a series of activated carbon production process made. Has good abrasion resistance, gap developed, high adsorption performance, high strength, easy regeneration, economic and durable, it is widely used in domestic, industrial, liquid adsorption, water purification, gas adsorption. Especially suitable for power plants, petrochemical, refinery, textile printing and dyeing, food and beverage, pharmaceutical water, electronic high water, drinking water, industrial water reuse and other industries. More effective adsorption of free chlorine, phenol, sulfur, oil, resin, pesticide residues and other organic contaminants, chlorine, dechlorination half the value, as well as recycling of organic solvents. 2 Uses shell activated carbon is widely used in drinking water, industrial water and wastewater deep purification domestic, industrial water purification and gas adsorption, such as power plants, petrochemical, refinery, food and beverage, sugar liquor, pharmaceutical, electronics, raising fish, sea water purification and other industries, can effectively adsorption of free chlorine, phenol, sulfur and other organic contamination special, especially mutagens (THM) are precursors to purify impurity to smell. Can also be used for industrial exhaust gas purification, gas desulfurization, catalytic reforming of petroleum, gas separation, pressure swing adsorption, air drying, food preservation, gas masks, carrier media solution, industrial solvent filtration, bleaching, purification and so on. Various gas separation, purification, purification; precious metal refining;; chemical industry catalyst and catalyst carrier organic solvent recovery; sugar, monosodium glutamate, medicine, liquor, beverages bleaching, deodorizing, refining. Products more bleaching, purification, cleaning, deodorizing, to smell, vector, purification, recycling and other functions. Wastewater pretreatment requirements due to shell activated carbon for water is high, and activated carbon is expensive, so in wastewater treatment, activated carbon is mainly used to remove trace contaminants in wastewater, in order to achieve deep purification purposes. 1. activated carbon treatment of wastewater containing chromium. Chrome plating in a larger amount of a metal material, hexavalent chromium in the waste water with pH values ??were different in different forms. Activated carbon has a very well-developed porous structure and high specific surface area, with a strong physical adsorption capacity, can effectively absorb wastewater Cr (Ⅵ). The presence of a large number of the surface of activated carbon-containing groups such as hydroxyl (-OH ), carboxyl (-COOH), etc., they have electrostatic adsorption function of Cr (Ⅵ) chemical adsorption. Can be used in electroplating wastewater Cr (Ⅵ), water adsorption can meet the national emission standards. Tests showed that: the solution Cr (Ⅵ) concentration of 50mg / L, pH = 3, when the adsorption time 1.5h, adsorption properties of activated carbon and Cr (Ⅵ) removal are the best results. Therefore, the use of chromium-containing wastewater treatment process of activated carbon is the result of the combined effect of activated carbon in solution Cr (Ⅵ) physical adsorption, chemisorption, chemical reduction, etc.. Activated carbon treatment of wastewater containing chromium, adsorption stable performance, high efficiency, low operating costs, there is a certain social and economic benefits. 2. activated carbon treatment of wastewater containing cyanide. In industrial production, gold and silver wet extraction, chemical fiber production, coke, ammonia, electroplating, gas production and other industries are using cyanide or cyanide byproduct, and thus in the production process is bound to emit a certain amount of cyanide Wastewater. Activated carbon is used to purify water has a long history, used in treatment of wastewater containing cyanide reported more and more. But because CN_, small HCN on activated carbon adsorption capacity, usually 3mgCN / gAC ~ 8mgCN / gAC due different varieties, the processing costs uneconomical. 3. Activated carbon treatment of wastewater containing mercury. There mercury adsorption performance of activated carbon and mercury-containing compounds, but the limited absorption capacity, suitable only for low mercury content in waste water treatment. If higher concentrations of mercury that can be treated by chemical precipitation, post-processing of mercury about 1mg / L, high up 2-3mg / L, then use charcoal for further processing. 4. Activated carbon phenolic wastewater treatment. Phenolic wastewater from a wide range of petrochemical plants, resin plant, coking plant and oil refinery plants. The experiment proved that: good Adsorption on activated carbon, the temperature is not conducive to absorption, adsorption capacity is reduced; but elevated temperatures shorten the time to reach adsorption equilibrium. The amount of activated carbon and adsorption time optimum value exists, under acidic and neutral conditions, little change in the removal rate; strong alkaline conditions, a sharp decline in the phenol removal, the more strongly basic, the worse the effect adsorption. 5. activated carbon treatment of wastewater containing methanol. Activated carbon can absorb alcohol, but not strong adsorption capacity, suitable only for treatment of waste water containing low amounts of methanol. Engineering operation results show that the mixture of COD can be from 40mg / L down to 12mg / L or less, for the removal of methanol reached 93.16% to 100%, and its return is used to meet the water quality of effluent water system boiler feed water desalination Claim. 6. Activated Carbon Industry drainage. Activated carbon used in the industry can be divided into industrial wastewater drain more occasions and relatively few occasions in both cases. In both cases, the use of activated carbon is not the same. In displacement more occasions, the drainage from a particular step, ingredients contained therein will occur rarely frequent changes; the contrary, in the case of relatively small displacement, composition changes drainage contained relatively large, often daily not the same, even in different time periods of the day are not the same. [2] 7. The activated carbon treatment of domestic sewage. Activated carbon importance in the treatment of domestic sewage, is also essential filter material in wastewater treatment, activated carbon adsorbent sewage treatment is a widely used. At present, the amount of municipal sewage country is growing at an annual rate of 5 percent annually, so that the current sewage treatment is the primary goal of solving environmental problems. Powdered activated carbon for water purification technology for processing over 70 years of history, from the first US application of powdered activated carbon to eliminate odor chlorophenol brought so far, an effective way to remove impurities in the water is still activated carbon purification technology, Its purifying effect in many countries has been the first column. At present, China has been careful search, such as the use of waste material as a raw material for preparing activated charcoal method, have been used walnut shells, bamboo, tobacco stems and other waste as a raw material, to solve the problem of sewage treatment, so that the wastewater treatment activated carbon purification technology essential . [3] shell activated carbon for wastewater treatment water purification and sewage treatment, microfiltration is a sophisticated filtering technology. It's aperture range is generally 0.05 ~ I0 // m, ranging between conventional filtration and ultrafiltration, belong to the pressure-driven achieve sub skinny and enrichment purposes, no phase change and the quality of the transfer interface, and Conventional filtration differ. Conventional filtration generally divided depth filtration and mesh-like filter. It uses the media, such as paper, asbestos, fiberglass, ceramics, fabric, felt, etc., are some of the holes do not hold together form a very porous body, surrounded by a wide pore size distribution Potamogeton not indicate its pore size, particle filtration is caught by the internal media leisurely meandering through being retained. B6 retention rate and pressure drop increase Zeng, medium thick, large particles of Nathaniel capacity for general Cheng Qing filtering. Microfiltration the filter medium having a similar mesh-like structure, is made from natural or synthetic polymer material formed. Shell activated carbon has a relatively neat form a porous structure. More uniform pore size distribution. 3 Note 1, shell activated carbon during transport to prevent mixing with the hard material like, not step, step, to prevent fragmentation of carbon particles, affecting quality. 2, the storage should be stored in the porous adsorbent, so the transport storage and use, must absolutely prevent flooding, due to flooding, a lot of water full of activity in the gap, making it useless. 3, to prevent the tar substances in use should be prohibited tar substances into the activated carbon bed, to prevent blockage of carbon clearance, loss of adsorption. Preferably decoking gas purification equipment. 4, activated charcoal fire during storage or transport, to prevent direct contact with the fire to prevent fire, avoid completely into oxygen and activated carbon regeneration regeneration, must be reduced by steam cooling after regeneration below 80 ℃, otherwise the temperature is high, the case of oxygen, carbon combustion. [4]