Exhibitor List
| Company | HENAN JINFENG ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD |
| Country | China |
| Products | Chemical-physical processes Water-supply and sewage-disposal services |
| Hall | 5 |
| Booth | E84 |
| Website | www.99huoxingtan.com |
| Introduction | Henan Jinfeng Environmental Protection Engineering Co., Ltd., located in Gongyi City, the production base of water purification materials, mainly provides fruit shells, coconut shells, columnar, honeycomb, powdered activated carbon and other series of products, as well as a series of water treatment filter materials such as Anthracite filter materials, quartz sand filter materials, zeolite filter materials, ceramsite filter materials, volcanic rock filter materials, diamond sand filter materials, which are sold well in more than 20 provinces and cities in China with high quality |
Products
| Fruit shell filter material Walnut shell filter material is a water treatment filter material made from high-quality walnut shell as raw material, which has been crushed, polished, steam washed, medicated, and screened twice. Walnut shell filter material has advantages such as high hardness, wear resistance, good compression resistance, resistance to pressure of 23.4kgf, stable chemical properties, non solubility in acids and alkalis, strong adsorption and interception ability, adsorption rate of 27-50%, good hydrophilicity, and resistance to oil immersion. Walnut shell filter media, due to its inherent hardness, ideal specific gravity, porosity, and polyhedrality, and special physical and chemical treatment (removing pigments, fats, oils, and ions), have strong oil removal performance, solid particle removal, and easy backwashing in water treatment. Walnut shell filter media has been widely used It is used for oil field oily sewage treatment, Industrial wastewater treatment and civil water treatment. It is a new generation of filter material that replaces quartz sand filter material, improves water quality, and significantly reduces water treatment costs. As measured by Beijing Forestry University, the Testing Center of Shandong Academy of Sciences, and Jiangsu Environmental Protection Research Institute, the average compressive limit of walnut shell with a strong compressive capacity of 1.25-1.60mm is 0.2295kn (23.40kgf). Walnut shell particles with a particle size of 0.80-1.00mm have an average compressive limit of 0.165kn (16.84kgf). The chemical property is stable, it does not contain toxic substances, and the dissolved amount in acid, alkali and water is very small. The loss rate of walnut shell in hydrochloric acid solution is 4.99%, and the loss rate in sodium hydroxide solution is 3.8%, which will not cause water quality deterioration. |
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| Anthracite filter material Anthracite filter material is made of high-quality raw coal through selection, crushing and twice screening. It has good luster, spherical appearance, high mechanical strength, good compression resistance, stable chemical performance, no toxic substances, wear-resistant, insoluble in acid, neutral and alkaline water, and rough surface of Anthracite particles, It has good adsorption capacity, high porosity (≥ 52%), high pollution content, and low backwashing intensity due to its light weight, which can save a large amount of backwashing water and electricity. |
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| Quartz sand filter material Quartz sand filter material is made from natural quartz ore and processed through processes such as crushing, washing, and screening. It is the most widely used and widely used water purification material in the water treatment industry. It is processed from natural quartz ore through processes such as crushing, screening, and washing. The appearance is polygonal, spherical, and pure white, with advantages such as high mechanical strength, strong dirt removal ability, and good acid and alkali resistance. Quartz sand filter material has no impurities, is resistant to compression and wear, has high mechanical strength, stable chemical properties, strong pollution interception ability, high efficiency, and long service life. It is suitable for single-layer and double-layer filters, filters, and ion exchange, and all indicators meet the (CJ/t43-2009) standard. Processed with refined quartz sand, pure white quartz sand, acid treatment agent, and ordinary quartz sand, it can meet the needs of different users. Common specifications: 0.5-1.0mm 0.6-1.2mm 1-2mm 2-4mm 4-8mm 8-16mm 16-32mm. |
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| Manganese sand filter material Manganese sand filter material is a type of groundwater treatment filter material, with a black brown appearance and a nearly circular shape. The main component is manganese dioxide, with a content ranging from 35% to 45%. Using it to treat groundwater has a simple process, convenient operation, small footprint, low engineering cost, long-term stability, and a service cycle of over 5 years. It is easy to manage and can remove harmful substances such as iron, manganese, and arsenic from water without adding any chemical agents. The water quality fully meets the national drinking water standards, making it a very good filter material for groundwater treatment. Common specifications of manganese sand filter material: 0.4-0.8mm 0.5-1mm 0.8-1.2mm 1.0-2.0mm 2.0-4.0mm 4.0-8.0mm 8.0-16mm Due to the low strength of manganese sand filter material, it is generally not recommended to choose too small models. Special specifications can be processed separately according to user needs Manganese dioxide (Pyrolusite exists in nature). Physical properties: black amorphous powder, or black rhombic crystal. Solubility: It is difficult to dissolve in water, weak acids, weak bases, nitric acid, and cold sulfuric acid. When heated, it dissolves in concentrated hydrochloric acid and produces chlorine gas. |
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| Sponge iron filter material Sponge iron deoxidizer is a block like sponge iron deoxidizer at room temperature, which is an environmentally friendly water treatment medium. Adopting sponge iron filter material type deoxidizer with high activity and large specific surface area obtained through activation treatment. The treatment of industrial water (or soft water) at room temperature has achieved ideal results (residual oxygen content: 0.03-0.05mg/l). Sponge iron deoxidizer has the advantages of low investment in supporting facilities, simple maintenance, low transportation cost, and good deoxygenation effect. It can be widely used for anti-corrosion of boilers and circulating water equipment, and is a cost-effective energy-saving product |
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| Water purification granular activated carbon Coal based activated carbon is developed through a series of processes including carbonization, cooling, activation, and washing. Its appearance is generally black cylindrical activated carbon, amorphous coal particle activated carbon, also known as crushed carbon. Cylindrical activated carbon, also known as columnar carbon, is generally composed of powdered raw materials and binders, which are mixed, extruded, and then carbonized Made through processes such as activation. It can also be extruded with powdered activated carbon and binder. It has developed pore structure, good adsorption performance, high mechanical strength, easy to repeatedly regenerate, and low cost; Used for the purification of toxic gases, waste gas treatment, industrial and domestic water purification, solvent recovery, and other aspects Face. Coal based granular activated carbon has unique advantages due to its high strength, well-developed pores, large specific surface area, and especially large microporous volume. Coal based activated carbon has strong adsorption capacity for various organic matter, free chlorine in water, and harmful gases in the air. It is an excellent adsorbent for deep purification of urban drinking water and is applied for air removal Bacteria and toxic gases in the gas. Coal based activated carbon has developed pore structure, good chemical stability, and mechanical strength, making it an excellent broad-spectrum carbon adsorption material. According to the different appearances, coal based activated carbon can be mainly divided into coal based granular activated carbon and coal based powdered activated carbon, and granular activated carbon It is also divided into coal based formed carbon [including columnar carbon, pressed block carbon (or pressed sheet carbon)] There are two main categories: spherical carbon and raw coal crushed activated carbon. According to different uses, activated carbon can be divided into various uses such as water purification, air purification, decolorization, solvent recovery, injection, and protection. Due to its acid resistance, alkali resistance, heat resistance, and the convenient regeneration of granular activated carbon after adsorption saturation, activated carbon is an essential carbon adsorption material in modern industrial production and environmental protection. The adsorption of solute molecules in water by granular activated carbon from coal is a complex process, which is the result of the combined action of several forces, including ionic attraction, Van der Waals force force, chemical impurity and force. According to the dual rate diffusion theory of adsorption, adsorption is a dual rate process consisting of two stages: rapid diffusion and slow diffusion The diffusion is completed within a few hours, exerting the adsorption capacity of 60% to 80% coal based granular activated carbon. Rapid diffusion is the process of solute molecules diffusing in large pores with low resistance and uniformly distributed radially within carbon particles. These large pores generate radial diffusion resistance. When molecules further enter and interact with macropores When diffusion occurs in interconnected micropores, it is extremely slow due to the significant resistance generated by narrow pore sizes. Micropores are also uniformly distributed within carbon particles, but do not constitute radial diffusion resistance. The factors affecting the adsorption of coal based granular activated carbon involve solute molecular polarity, molecular weight size, and spatial structure, which depend on The characteristics of the water quality of the water source. Coal based granular activated carbon has selective adsorption properties for different substance molecules. advantage 1) The main characteristics of the application of coal based granular activated carbon are low equipment investment, low price, fast adsorption speed, and strong adaptability to short-term and sudden water pollution. 2) Adding coal based granular activated carbon has a significant effect on removing chromaticity. The removal of chromaticity has been reported to reach 70%, and low chromaticity indicates high efficiency in removing organic matter, such as iron and manganese |
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| Volcanic rock filter material Volcanic rock filter material is a granular filter material processed through a series of processes such as beneficiation, crushing, screening, and grinding. Its main components are dozens of minerals and trace elements such as silicon, aluminum, manganese, and iron, which are nearly circular particles. The color is red black brown, with multiple pores and light weight. The particle size can be produced according to different requirements. Efficient membrane hanging lightweight filter materials exhibit rough and porous surfaces in terms of physical microstructure, which are particularly suitable for the growth and reproduction of microorganisms on their surfaces to form biofilms. Volcanic rock filter media can not only treat municipal sewage, biochemical organic industrial wastewater, micro polluted water, etc. in terms of biological aerated filter, but also replace quartz sand, activated carbon, Anthracite, etc. in water supply treatment as filter media. At the same time, it can also conduct advanced treatment on the tail water that has passed the secondary treatment process of the sewage treatment plant, and its treated water can be used as reclaimed water after reaching the reuse standard. |
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| Rare earth ceramic sand filter material Rare earth ceramic sand filter material is refined from porous ceramic raw materials mixed with rare earth raw materials, with strong filtration and adsorption capacity, high strength, low resistance, corrosion resistance, non-toxic, simple regeneration, and long service life. Traditional filter materials such as quartz sand, granite and Anthracite have low porosity, small specific surface area, poor sewage interception capacity, low output and unstable water quality. The short filtration cycle and service life make it difficult to meet the requirements of Industrial wastewater treatment with complex components and advanced treatment of domestic and industrial water with increasing pollution. In response to the shortcomings of traditional filter materials and based on the experience of developing new filter materials abroad, high-quality kaolin, binder, pore forming agent, and rare earth anti-corrosion agent are used. After high-temperature sintering, a new type of filter material, rare earth ceramic sand filter material, is made with a white appearance, hard texture, uniform particles, developed micropores, high porosity, and full roundness. Porcelain sand filter material has stable chemical properties, abrasion resistance, impact resistance, corrosion resistance, high temperature resistance, large specific surface area, strong pollution interception ability, good adsorption performance, uniform particles, appropriate specific gravity, and a service life of about 15 years. Due to the addition of rare earth elements containing corrosion-resistant gold lanthanide and actinide elements, the rare earth ceramic sand filter material not only has the properties of ordinary porcelain, but also enhances its corrosion resistance and makes SiO2 more stable |
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| Bio-ceramic Bioceramic particles are a new type of biofilm carrier filter material with advantages such as light weight, large specific surface area, and strong adsorption capacity. Suitable for various forms of filter tanks and tanks. Bioceramic particles are a new type of biofilm carrier filter material with advantages such as light weight, large specific surface area, and strong adsorption capacity. Suitable for various forms of filter tanks and tanks. Compared with quartz sand, the specific surface area is 2-3 times that of quartz sand of the same volume, and the porosity is 1.3-2.0 times that of quartz sand. Compared with sand filter, average filtration rate High (20-25m/h), high water yield, long filtration cycle, low flushing frequency, and low flushing intensity. It is made by selecting natural adsorption materials and minerals, and processing them through scientifically designed high-temperature sintering and fine screening processes. This filter material has the characteristics of light specific gravity, high porosity, good surface properties, high filtration rate, stable operation, long service life, low backwash water consumption, and fast biological reproduction. It is a practical new type of energy saving filter material. Main uses: Bioceramic filter material can be used as a biofilm carrier for industrial wastewater high load biofilter tanks, as a slightly polluted source of tap water, as a pre-treatment biofilter, as a coarse-grained material for oily wastewater, as an ion exchange resin cushion, and for microbial drying and storage; Suitable for advanced treatment of drinking water, it has the ability to adsorb harmful elements, bacteria, and mineralize water in the water, making it the best filter material for active biodegradation of harmful substances. |
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| Garnet filter material 石榴石滤料又名"玉砂"或"天然金刚砂"，具有较强的硬度和很好的耐酸耐碱性，是一种岛状结构的铝(钙)硅酸盐，它色多优美，经高纯磁选出的有灰、红、绿、白等多种染色体，是国外新开发的立体喷墙涂料，是玻壳厂主要能做彩壳喷砂的耐磨材料。由于它内部化学分子多，具有化学稳定性好等特点。 石榴石滤料由化学性能稳定的天然硅酸盐矿物石榴石加工而成，它熔点高、比重大、硬度大、耐酸耐磨度强、化学稳定性好，是一种新型耐磨净水材料。 石榴石在用作砂砾层的水过滤器的过滤介质上具有强大的竞争能力，展示了广阔的前景，因为它具有某些过滤介质所没有的有点，如石榴石做水过滤器的过滤介质是不含有机物质、无破碎或磨碎的矿物，同时也不含酸溶组分和其他细粒物料。 |
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| Zeolite filter material Zeolite is a polar substance and a highly polar adsorbent. It has a strong adsorption effect on polar molecules and unsaturated organic compounds, such as halogenated hydrocarbons, and also has a high selective adsorption advantage for non-polar molecules with high polarizability. There are two types of zeolite filter materials: natural clinoptilolite filter materials and activated zeolite filter materials Natural clinoptilolite filter material Natural zeolite is an aluminosilicate mineral with a white or brick red appearance, belonging to the weakly acidic cation exchange agent. Through artificial introduction of active components, it has new ion exchange or adsorption capacity, and the adsorption capacity also increases accordingly. Mainly used for softening treatment of water used in small and medium-sized boilers to remove calcium and magnesium ions in the water, thereby reducing the generation of scale in the boiler, reducing corrosion of water measuring metals, and extending the service life of the boiler. In wastewater treatment, it can be used to remove phosphorus, lead and Hexavalent chromium from water. The expired zeolite can be reused after countercurrent regeneration of concentrated brine. Activated zeolite filter material Activated zeolite is a natural zeolite activated by a variety of special processes. Its adsorption performance is stronger than that of natural zeolite, and its ion exchange performance is also better. It can not only remove turbidity, chroma, and odor in water, but also remove harmful heavy metals in water, such as chromium, cadmium, nickel, zinc, mercury, iron ions, and organic matter: phenol, hexachlorocyclohexane, DDT, nitrogen, ammonia nitrogen, phosphate ion and other substances have adsorption Exchange interaction effect, It is also conducive to the removal of various micro pollutants in water, and the water extract does not contain toxic or harmful substances to the human body. The removal effect of iron and fluorine in water is more significant. Therefore, activated zeolite is a new ideal filter material for industrial water supply, wastewater treatment, and tap water filtration. |
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| columnar activated carbon The use of columnar activated carbon for coal based wastewater treatment: 1. Water treatment industry: tap water, industrial water, sewage treatment, purified water, beverage, food, and pharmaceutical water 2. Air purification: impurity removal, odor removal, adsorption, removal of harmful gas substances such as formaldehyde, benzene, toluene, xylene, oil and gas 3. Industry: decolorization, purification, air purification, desulfurization and denitrification 4. Fish farming: water filtration, seawater filtration, bath water filtration, 5. Reagent: Catalyst and catalyst carrier Advantages of columnar activated carbon for coal based wastewater treatment: 1. The service life is 4-5 times that of ordinary coal based activated carbon 2. High adsorption and desorption properties, greatly improving solvent recovery rate 3. High strength and low ash content, with reasonable pore size distribution 4. High cost-effectiveness, suitable for the recycling and utilization of all organic gases in this field 5. High ignition point for safe use |
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| Activated Carbon Application of Coconut Shell Activated Carbon: Coconut shell granular activated carbon is often used in gas phase adsorption, which usually allows the airflow to be adsorbed through the activated carbon layer. According to the different states of the activated carbon layer in the adsorption device, there are several types of adsorption layers: fixed layer, moving layer, and flowing layer. However, in small adsorbers such as refrigerators and deodorizers in cars, adsorption relies on gas convection and diffusion. In addition to granular activated carbon, activated carbon fibers and activated carbon composites are also increasingly widely used in gas phase adsorption. 2. The air in instrument rooms, air conditioning rooms, basements, and underwater facilities often contains body odor, smoking odor, cooking odor, oil, organic and inorganic sulfides, corrosive components, etc. due to external pollution or the influence of human activities in enclosed environments, causing corrosion of precision instruments or affecting human health. Activated carbon can be used for purification to remove impurities. 3. Coconut shell activated carbon can be used in the exhaust gases of chemical factories, leather factories, paint factories, and engineering projects that use various organic solvents. It contains various organic solvents, inorganic and organic sulfides, hydrocarbons, chlorine gas, oil, mercury, and other harmful components to the environment. Activated carbon can be used for adsorption before discharge. The gas discharged from atomic energy facilities contains radioactive substances such as krypton, xenon, and iodine, which must be adsorbed clean with activated carbon before being discharged. The smoke generated by the combustion of coal and heavy oil contains sulfur dioxide and nitrogen oxides, which are harmful components that pollute the atmosphere and form acid rain. They can also be adsorbed and removed using activated carbon. 4. There are many use cases of coconut shell activated carbon for refining gas, such as Gas mask, Cigarette filter, refrigerator deodorizer, automobile exhaust treatment device, etc. All of them use the excellent adsorption performance of activated carbon to remove toxic components, harmful components or odorous components from the gas. For example, after adding 100-120ng activated carbon to the Cigarette filter, a large part of harmful components in the smoke can be removed. 5. Activated carbon for sweetening: used as a carrier for gasoline sweetening (deodorization) catalysts in catalytic units of refineries. 6. Vinylon catalyst activated carbon: used in the chemical industry as a catalyst carrier, such as vinyl acetate catalyst carrier. 7. Monosodium glutamate refining activated carbon: used for decolorization and refining of mother liquor in the production process of monosodium glutamate, and can also be used for decolorization and refining of fine chemical products. 8. Cigarette filter special activated carbon: used in Cigarette filter in the cigarette industry to remove tar, nicotine and other toxic and harmful substances in cigarettes. 9. Special activated carbon for citric acid: used for decolorization, refining and deodorization of citric acid, amino acid, Cystine and other acids. 10. Special activated carbon for direct drinking water treatment: activated carbon is used for deep Water purification of domestic direct drinking water, water treatment in waterworks and barreled water production. Precautions for coconut shell activated carbon: 1. Coconut shell activated carbon should be prevented from mixing with hard substances during transportation and should not be stepped on or stepped on to prevent the carbon particles from breaking and affecting the quality. 2. Storage should be stored in porous adsorbents, so during transportation, storage, and use, it is absolutely necessary to prevent water immersion, as after water immersion, a large amount of water fills the active pores |
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| honeycomb activated carbon Introduction to Honeycomb Activated Carbon 1. Production method: Using coal based activated carbon powder, high iodine value coconut shell activated carbon powder, and decolorized wooden activated carbon powder as raw materials, it is extruded, dried, and fired. 2. Advantages: It has a large specific surface area, rich microporous structure, strong acid and alkali resistance, high temperature and high pressure resistance, small wind resistance, good effect, reasonable price, and can effectively reduce odor and pollutants. The honeycomb structure has parallel straight channels inside, and the size and surface characteristics of the straight channels make their momentum, mass, and heat transfer characteristics completely consistent in each channel, This avoids the possibility of random accumulation of particulate catalysts in a fixed bed, resulting in fluid non-uniformity and the generation of hot spots. 3. Usage: Air purification, waste gas treatment, highlighting irreplaceable environmental and economic benefits in oil, natural gas, biochemical, chemical, painting, paint spraying, leather factories, animal breeding places, catering oil fume waste gas treatment, gluing, printing, refrigerators, copiers, and improving central air conditioning air filtration equipment. 4. Classification: Mainly divided into water resistant and ordinary types in terms of functionality. It can be divided into cylindrical, elliptical cylindrical, circular, square, rectangular, hexagonal, or triangular shapes in shape. The commonly used shape is a square, so it is commonly known as honeycomb activated carbon on the market. |
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| powdered activated carbon Wooden powdered activated carbon products are made from high-quality fruit shells and sawdust, which are carbonized, steam activated at high temperatures, and refined through multiple processes. The appearance is black and fine powder like, with characteristics such as large specific surface area, strong adsorption performance, low impurity ions, and good filtration effect. They are mainly used in the water purification industry to decolorize and refine organic solvents In terms of purification and sewage treatment (such as water purification in waterworks, water treatment, etc. It can also be used for decolorization and purification of food, alcohol, and beverages). The production methods of wooden powdered activated carbon are divided into phosphoric acid method and Zinc chloride method: 1. Wooden powdered activated carbon produced by the phosphoric acid method has a well-developed mesoporous structure and developed specific surface area, large adsorption capacity, fast filtration speed, and no zinc salts. Widely used in the food industry for decolorization, refining, deodorization, and impurity removal of sugars, glutamate and salts, lactic acid and salts, citric acid and salts, wine, seasonings, animal and plant proteins, biochemical products, pharmaceutical intermediates, vitamins, antibiotics, and other products. 2. The wooden powdered activated carbon produced by the Zinc chloride method has developed mesoporous structure, large adsorption capacity, rapid filtration and other characteristics. Wooden powdered activated carbon is mainly suitable for the decolorization, purification, deodorization, and impurity removal of high pigment solutions in various amino acid industries, such as refined sugar decolorization, monosodium glutamate industry, glucose industry, starch sugar industry, chemical additives, dye intermediates, food additives, pharmaceutical preparations, etc. Wooden powdered activated carbon has the characteristics of low impurities, high purity, and fast filtration rate, and has excellent decolorization, purification, and purification performance. It is mainly used for decolorization, purification, and removal of "heat sources" in various injection agents. It can also be used for decolorization of vitamin C and other raw materials, with strong decolorization power and fast filtration rate, suitable for decolorization and refining of pharmaceuticals, pesticides, and Chinese and Western raw materials. And it has various aspects of production and daily life, such as absorption of intestinal bacteria, detoxification, sugar production, monosodium glutamate, food and beverage, water treatment, chemical engineering, etc. It is used for decolorization, deodorization, impurity removal, purification, refining, etc. The future consumption development space is still very broad 1. Adding wooden powdered activated carbon has a significant effect on odor removal. 2. Adding activated carbon helps to remove anionic detergents. 3. Adding wooden powdered activated carbon has a good effect on the removal of phenols. 4. The addition of activated carbon powder significantly reduces the turbidity of the effluent and improves the water quality of tap water. Application and Promotion of Wood Powder Activated Carbon in Advanced Water Purification Treatment How to choose the appropriate type of activated carbon and choose the appropriate dosing process based on the pollution characteristics of different treated water bodies is a research focus and difficulty in the water treatment industry. Foreign countries have high requirements for activated carbon for water purification treatment, while domestic research relatively lags behind. There is not much research on the important indicators of activated carbon for removing odor from water bodies, such as ABS value and phenol value. In addition, domestic water pollutants are much more complex than foreign ones, Bringing huge difficulties to the determination of processing objects? Due to the complexity of processing objects, the improvement of application level is constrained With the promotion of advanced water treatment processes and the application of activated carbon biofilters, although granular activated carbon exhibits good processability, powder activated carbon adsorption |
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| Activated Carbon 1、 Product Introduction: Fruit shell activated carbon is a high adsorption performance activated carbon made from high-quality apricot shell, walnut shell, jujube shell and other fruit shells, which are refined and processed after drying, carbonization, and high-temperature steam activation. The appearance is black amorphous particles. 2、 Product advantages: It has developed pore structure, large specific surface area, strong adsorption capacity, high mechanical strength, small bed resistance, good chemical stability, easy regeneration, durability and other advantages, and has various specifications of Granularity. 3、 Product Usage: Fruit shell activated carbon is widely used for deep purification of drinking water, industrial water and wastewater, industrial water quality purification, and gas-phase adsorption, such as water purification treatment in industries such as power plants, petrochemicals, refineries, food and beverage, sugar and wine making, pharmaceuticals, electronics, fish farming, and maritime transportation. It can effectively adsorb free chlorine, phenols, sulfur, and other organic pollutants in water, especially precursor substances of mutagens (THMs), Achieve purification, impurity removal, and odor removal. It can also be used for industrial tail gas purification, gas desulfurization, oil Catalytic reforming, gas separation, pressure swing adsorption, air drying, food preservation, Gas mask, disintermediation carrier, industrial solvent Filtering, decolorization, purification, etc. Separation, purification, and purification of various gases; Organic solvent recovery; Decolorization, deodorization, and refining of sugar, monosodium glutamate, medicine, alcohol, and beverages; Precious metal extraction; Catalysts and catalyst carriers in the chemical industry. The product is more capable of decolorization, purification, impurity removal, deodorization, and deodorization Functions such as taste, carrier, purification, recycling, etc. 4、 Application of Fruit Shell Activated Carbon in Wastewater Treatment: Due to the high requirements for pre-treatment of water and the high price of activated carbon, activated carbon is mainly used to remove trace pollutants in wastewater treatment to achieve deep purification. 1. Activated carbon treatment of chromium containing wastewater Hexavalent chromium is a kind of metal raw material with large amount in electroplating. it exists in different forms with different ph values in wastewater. Activated carbon has a well-developed microporous structure and a high specific surface area, which has strong physical adsorption ability and can effectively adsorb chromium (vi) in wastewater. The surface area of activated carbon There are a large number of oxygen-containing groups on the surface, such as hydroxyl (- oh) and carboxyl (- cooh), which have electrostatic adsorption function and produce chemical adsorption on chromium (vi). It can be fully used to treat chromium (vi) in electroplating wastewater, and the adsorbed wastewater can meet the national discharge standards. The experiment showed that when the mass concentration of chromium (vi) in the solution was 50mg/l, pH=3, and the adsorption time was 1.5 hours, the adsorption performance of activated carbon and the removal rate of chromium (vi) reached * * * optimal results. Therefore, the process of using activated carbon to treat chromium containing wastewater is a comprehensive process of physical adsorption, chemical adsorption, and chemical reduction of chromium (vi) in solution by activated carbon The result of the action. Activated carbon treatment of chromium containing wastewater has stable adsorption performance, high treatment efficiency, low operating costs, and certain social and economic benefits. 2. Treatment of Cyanide Containing Wastewater with Charcoal At work |
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