1、Product Overview

Coal-based granular activated carbon is a porous adsorbent material refined from high-quality anthracite and bituminous coal as core raw materials through a series of advanced processes such as crushing, forming, carbonization, and high-temperature activation. It has an appearance of dark black granular form (which can be divided into columnar, irregular granular, etc.), with a well-developed internal pore structure and a huge specific surface area. It possesses core advantages such as large adsorption capacity, high mechanical strength, strong chemical stability, easy regeneration, and long service life. Moreover, it has a wide range of raw material sources and prominent cost performance. It is one of the commonly used high-efficiency adsorbent materials in various industries, widely applied in environmental protection, industry, food, medicine and other fields, and plays an irreplaceable role in pollution control and resource recovery.

2、Core features of the product

（1）Physical characteristics

• Appearance and morphology: Dark black granular, with uniform and rounded particles (columnar particles are in regular cylindrical shape), no obvious impurities, uniform color, no caking phenomenon, firm hand feel, no massive powder falling off. Particle products with different particle size specifications can be customized according to requirements.

  
  

  Pore structure: It has a well-developed three-level pore system of micropores, mesopores and macropores. Micropores are responsible for adsorbing small molecular substances, mesopores provide diffusion channels for adsorbates, and macropores both act as channels and adsorb macromolecular substances. The pores have good connectivity and fast adsorption rate, which can quickly capture and lock target adsorbates.

  
  

  Specific surface area: The specific surface area can reach 800-1500 m²/g, with sufficient pore volume. The adsorption capacity per unit mass is much higher than that of ordinary adsorption materials, which can efficiently treat low-concentration and large-capacity pollutant systems and adapt to various complex working conditions.

  
  

  Mechanical properties: It has extremely high compressive and wear resistance. The ball disc strength is usually ≥95%. It is not easy to break or pulverize during loading, transportation, filling and backwashing processes, which can effectively avoid the decrease of adsorption efficiency and equipment blockage caused by particle damage, and reduce usage loss.

（2）Chemical characteristics

• Chemical stability: The main component is carbon (with a carbon content of approximately 90%), and it also contains small amounts of elements such as oxygen, hydrogen, sulfur, and nitrogen. It has stable chemical properties, can work stably in acidic, alkaline, and neutral media, does not undergo chemical reactions with the treated media, and produces no secondary pollution.
  
  
  Adsorption performance: It has both physical adsorption and chemical adsorption effects. It can adsorb organic substances, odors, pigments, and other substances in gases and liquids through van der Waals forces, and can also undergo chemical reactions with heavy metal ions and harmful gases through surface chemical groups to achieve efficient adsorption and removal. It has strong adsorption selectivity and stable adsorption capacity.
  
  
  Temperature and pressure resistance: It can withstand high temperature and high pressure, has a wide operating temperature range (-20℃-400℃), and is suitable for special working conditions such as high-temperature flue gas treatment and high-temperature wastewater treatment. Moreover, its adsorption performance is not significantly affected in high-pressure environments, with outstanding performance stability.

（3）Using features

• Easily recyclable: The regeneration process is mature. After thermal regeneration and other treatments, it can be recycled 3-4 times. The recovery rate of iodine value after regeneration reaches more than 86%, and the loss of activated carbon is less than 6%, which significantly reduces the comprehensive use cost and conforms to the concept of energy conservation and environmental protection.

  
  

  Long service life: Under normal working conditions, the service life can reach 2-5 years, without frequent replacement, reducing the number of equipment shutdowns for maintenance, improving production efficiency, and is especially suitable for treatment systems that operate continuously for a long time.

  
  

  Wide adaptability: Products with different particle sizes and different adsorption properties can be customized according to different industries and different treatment needs, adapting to various scenarios such as water treatment, waste gas treatment, and solvent recovery, with strong versatility.

  
  

  Environmentally friendly and no residue: It is non-toxic, tasteless, and has no secondary pollution. After adsorption saturation, it can be recycled through regeneration. Waste products that cannot be regenerated can be used as fuel to recover heat, realizing resource recycling and meeting the requirements of national ecological civilization construction.
  
  

3、Product Usage

（1）Environmental protection field (core application field)

1. Water treatment

• Deep purification of drinking water: It is used in waterworks and rural drinking water purification projects. It adsorbs organic matter, residual chlorine, odors, off-colors, pesticide residues, and heavy metal ions (such as lead, mercury, cadmium, etc.) in raw water, removes disinfection by-products, improves the taste of drinking water, and ensures that water quality meets national drinking water standards. It is particularly suitable for the mainstream water purification process of "O₃+BAC" (ozone-biological activated carbon).
  
  
  Industrial wastewater treatment: It treats industrial wastewater from industries such as chemical engineering, coking, printing and dyeing, papermaking, electroplating, and pharmaceuticals. It adsorbs refractory organic matter, chromaticity, odors, and heavy metal ions in wastewater, reduces COD and BOD content, and makes wastewater meet discharge standards. It is especially suitable for treating high-concentration organic wastewater with complex components and difficult biodegradability, and can be coupled with biochemical treatment processes to improve treatment efficiency.
  
  
  Domestic sewage treatment: It is used for advanced treatment in urban sewage treatment plants. It adsorbs residual organic matter and odors in water after secondary treatment, improves effluent quality, realizes reclaimed water reuse, enhances water resource utilization efficiency, and helps achieve the goal of zero sewage discharge.

2. Waste gas treatment

• VOCs waste gas treatment: It can adsorb VOCs (such as benzene, toluene, acetone, oil and gas, etc.) emitted from industries such as chemical engineering, printing, coating, rubber, synthetic resin, and synthetic fiber, enabling the waste gas to meet emission standards. It is one of the most widely used adsorption materials in the field of VOCs treatment, and can be used with adsorption towers, with high treatment efficiency.
  
  
  Flue gas desulfurization and denitrification: It is used for flue gas treatment in fields such as chemical engineering, non-ferrous metal smelting, iron and steel production, and power plants. It adopts dry desulfurization and denitrification technology to integrally remove SO₂, NOₓ and dust from flue gas, reduce secondary pollution, and realize the resource utilization of SO₂ to produce chemical products such as sulfuric acid or ammonium sulfate. 6mm and 9mm cylindrical granular activated carbon (activated coke) are commonly used.

（2）Industrial field

• Solvent recovery: Used in industries such as petrochemicals, printing, and coating. It recovers volatile organic solvents (such as ethanol, acetone, benzene, toluene, etc.) emitted during the production process, realizes resource recycling and reuse, reduces production costs, and decreases resource waste and environmental pollution.

  
  

  Gold extraction: Used in the gold smelting industry. It adsorbs gold ions in the ore slurry to achieve the enrichment and recovery of gold. With high adsorption efficiency, it can effectively improve the gold recovery rate and is one of the core adsorption materials in the gold extraction process.

  
  

  Catalysts and carriers: Can be used as carriers for industrial catalysts in reactions such as industrial coal gas desulfurization and phosgene production. They can also be directly used as catalysts to improve reaction efficiency. Additionally, they have strong chemical stability and do not affect the purity of reaction products.

  
  

  Electroplating industry: Purifies organic impurities in electroplating baths, removes harmful pollutants in electroplating solutions, ensures the quality of electroplated surfaces, and improves the qualification rate and service life of electroplated products.
  
  

（3）Food and pharmaceutical fields

• Food processing: Used for food decolorization, deodorization, and purification. For example, in the sugar industry, it adsorbs pigments, colloids, and impurities in sugar solutions to improve the purity and taste of sugar; in the beverage (wine, fruit juice) industry, it removes odors and adjusts flavors; in the purification of products such as oils, pectin, and agar, it reduces the ash content of products to ensure food quality. The acid washing-alkali washing process is required to reduce the content of ash and iron elements to meet food-grade standards.

  
  

  Pharmaceutical industry: Used for pyrogen removal and intermediate product purification in the drug synthesis process, as well as the treatment of pharmaceutical wastewater and waste gas. It adsorbs organic substances and heavy metal ions in wastewater, removes harmful components in waste gas, ensures the quality of pharmaceutical products and the compliance of the production environment, and adapts to the complex pollution control needs of the pharmaceutical industry.

（4）Other fields

• Military protection: Used in gas masks and industrial respirators to defend against toxic gases and dust, ensuring the breathing safety of personnel. It quickly captures toxic and harmful substances by virtue of its excellent adsorption performance.
  
  
  Soil improvement: Applied in projects such as golf courses and contaminated soil remediation, it adsorbs heavy metal ions and organic pollutants in the soil, improves soil quality, and restores soil ecological functions.
  
  
  Cold storage preservation: Used for air purification in cold storage, it adsorbs moisture and odors in the air, inhibits bacterial growth, extends the shelf life of food, and enhances the preservation effect.