Brief introduction of activated carbon for water treatment
Activated carbon for water treatment is generally columnar particles with large specific surface area, developed micropores, high mechanical strength, fast adsorption speed, strong purification ability, difficult powder removal and long service life.
Activated carbon for water treatment is made of high-quality coconut shell, walnut shell, apricot shell, peach shell and coal quality, and is refined through a series of production processes, with a black granular appearance. The advantages are developed pore structure, large specific surface area, strong adsorption performance, low negative pressure of reservoir, stable chemical properties and easy regeneration. It is suitable for deep purification of high-purity drinking water, industrial water and wastewater treatment. Activated carbon is made of high-quality coconut shells and refined by advanced production technology. The product has the advantages of developed pore structure, high strength, low impurity content, suitable particle size, low resistance and easy regeneration. Excellent water purification effect, not only can remove odor, but also improve the purity of water. It also has a high removal rate for chlorine, phenol, arsenic, lead, cyanide, pesticides and other impurities and other harmful substances in water. Can be widely used for filling various large, medium and small water purifiers. It is also suitable for decolorizing refined sugar and refreshing drinks, and purifying indoor and outdoor air, especially the activated carbon loaded with special components has better purification efficiency for indoor harmful gases such as ammonia and formaldehyde.
The quality of activated carbon for water treatment is mainly judged by the following parameters:
① moisture
② strength
③ Iodine adsorption value (above 900)
④ Benzene adsorption
⑤ Specific surface area
6. Grey
⑦ packing density
⑧ Particle size
Application of activated carbon in water treatment
Water treatment is divided into water treatment and sewage treatment: water treatment usually refers to domestic water, industrial water, pure water and other artificially treated water; Sewage usually refers to domestic polluted water, industrial sewage, etc.
1. Activated carbon treatment for water supply: At the end of the 20th century, some water plants in China began to apply the biological activated carbon method using ozone and activated carbon filter. Practice shows that it has the following functions: (1) can remove soluble organic matter in water; It can reduce the absorption value of ultraviolet rays and the contents of total organic carbon (TOC), chemical oxygen demand and chlorine in water. Low-flow trihalomethane precursor can be obtained; Can remove chroma, iron, manganese and phenol; It can make the water that is positive in the experiment become negative.
Activated carbon adopts advanced water quality advanced treatment technology, combined with the actual situation of urban tap water use and distribution, put coconut shell activated carbon into a small and efficient purification device, which can remove carcinogens, mutagens, teratogens and other pollutants, and further treat tap water as raw material to ensure the high quality of drinking water. This not only ensures the health of residents, but also is within the economic tolerance of residents.
2. Activated carbon treatment of sewage: 1953 The Minamata disease incident in Japan was a public hazard event in which industrial waste gas containing methylmercury polluted water and made dozens of residents in Minamata Bay nervous. The introduction of polythiourea into Han Yan activated carbon is beneficial to improve the adsorption capacity of mercury. Activated carbon has the best adsorption capacity for mercury.
Wastewater containing dichloroethane can be adsorbed by activated carbon column, regenerated by steam after saturation, and separated into dehydrated water after steam condensation, and dichloromethane can often be recovered quantitatively.
How to use activated carbon for water treatment
Activated carbon for extracting gold is made from high-quality coconut shells in Southeast Asia through carbonization, high-temperature activation, pretreatment and refining. The product has the remarkable characteristics of developed pore structure, large specific surface area, high wear resistance, fast adsorption speed, large adsorption capacity, easy desorption and reusability, and is widely used in carbon slurry method and heap leaching method for gold extraction. Activated carbon for gold adopts special technology, activated carbon particles are shaped with high strength, and vulnerable parts such as needles, tips and corners are almost completely removed. The particle shape is full and uniform, which greatly improves the wear resistance of the product. Pre-grinding is not needed after entering the factory, and it can be used directly after washing with water.