When it comes to wastewater treatment, shell activated carbon has proven itself to be an effective tool across multiple applications. For instance, its ability to treat phenol-containing wastewater has been extensively studied. This type of wastewater is commonly generated in industries like petrochemicals, resin production, coke-making, and refineries. Laboratory tests have demonstrated that activated carbon shows excellent adsorption capabilities for phenol. However, higher temperatures tend to hinder the adsorption process, reducing the overall capacity while slightly shortening the time needed to reach equilibrium. An optimal dosage and duration for maximum efficiency exist under typical conditions. Interestingly, the removal rate remains relatively stable under acidic and neutral settings, but drops significantly under highly alkaline environments. The stronger the alkalinity, the less effective the adsorption becomes. Switching gears to mercury-containing wastewater, shell activated carbon also exhibits strong affinity for mercury and related compounds. While it’s effective for low-level mercury contamination, its utility diminishes with higher concentrations. In such cases, a chemical precipitation method might be more appropriate. After initial treatment, the mercury concentration usually falls around 1 mg/L, but could rise to 2-3 mg/L in severe instances, necessitating further carbon-based purification. Cyanide-containing wastewater is another challenge where shell activated carbon proves useful. Cyanides are integral to processes like gold and silver extraction, chemical fiber manufacturing, coking, ammonia synthesis, electroplating, and gas production. Consequently, these operations often release trace amounts of cyanide into wastewater streams. Activated carbon helps mitigate this issue by binding cyanide molecules effectively. Lastly, chromium-laden wastewater poses significant environmental concerns due to hexavalent chromium's toxicity. Fortunately, shell activated carbon offers a practical solution thanks to its robust microporous structure and high surface area. These characteristics enable efficient physical adsorption of Cr(VI), while functional groups like hydroxyls (-OH) and carboxyls (-COOH) provide additional electrostatic and chemical binding opportunities. Our company proudly manufactures the "Qi Kun" brand of shell-based activated carbons, offering over 20 varieties spread across four main categories: gas phase, liquid phase, catalysts, and carriers. Guided by principles of customer focus, quality assurance, and service excellence, we strive to enhance the "Qi Kun" brand's reputation through continuous innovation and strategic partnerships. Our commitment to scientific management and networking ensures sustainable growth, allowing us to collaborate with both domestic and international clients toward a brighter future. Shell activated carbon http://
Piston Seals and Rod Seals are important seals used in mechanical equipment. Their main function is to prevent liquid and gas leaks and ensure the normal operation of mechanical equipment. Piston seals and rod seals are usually used in hydraulic and Pressure system, such as hydraulic cylinders and Pneumatic cylinder. The quality and performance of these seals directly affect the efficiency and lifespan of mechanical equipment.
The classification of piston seals and rod seals is mainly based on their material and design structure. According to the different materials, they can be divided into rubber seals, polyurethane seals, polytetrafluoroethylene seals, metal seals, etc. According to the different design structures, they can be divided into unidirectional seals, bidirectional seals, rotary seals, etc.
Rubber seals are a common type of seal, and their main material is rubber. Rubber seals have good sealing performance and wear resistance, and are suitable for medium and low pressure hydraulic systems and Pressure system. Polyurethane sealing element is a high-performance sealing element, and its main material is polyurethane. Polyurethane seals have high wear resistance, high temperature performance and high pressure performance, and are suitable for high-pressure hydraulic systems and Pressure system. PTFE sealing element is a corrosion-resistant sealing element, and its main material is PTFE. PTFE seals have excellent corrosion resistance and high temperature resistance, making them suitable for fields such as chemical and food processing. Metal seals are a type of high-temperature and high-pressure seal, mainly made of metal. Metal seals have high temperature and high pressure performance and corrosion resistance, and are suitable for high temperature and high pressure hydraulic systems and Pressure system.
Unidirectional seals and bidirectional seals are classified based on different sealing directions. A unidirectional seal can only prevent the leakage of liquid or gas from one direction, while a bidirectional seal can prevent the leakage of liquid or gas from both directions. Rotating seal is a type of seal that can rotate and is mainly used for sealing rotating shafts. Rotary seals are divided into unidirectional rotary seals and bidirectional rotary seals.
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