Nowadays, people's economic and technological development has also brought about corresponding environmental and water source problems. The shortage of water resources and water environment pollution have become global problems in this century and become increasingly serious. Some people even think that the problem of water may surpass the problem of energy and become an important problem in the world in the 21st century. Therefore, we must attach great importance to the problem of water. It is an important way to solve water environment pollution and make rational use of water resources to correctly master and reasonably use existing water treatment technologies and research new water treatment technologies.
Activated carbon The filter material should be a well-known water purification product in the water treatment industry. Since its appearance at the beginning of last century, the application field of activated carbon filter material has been expanding with the continuous deepening of people's research on it, and the number of applications has also been increasing. It is widely used in many industries, such as food, medicine, chemical industry, water treatment, environmental protection, chemistry, national defense, agriculture, etc. It is an indispensable and important industrial product in industrial and agricultural production and widely used in people's daily life. Activated carbon filter material is a kind of microcrystalline carbon material with developed internal pore structure, large specific surface area and strong adsorption capacity, which is made from coal, wood, fruit shell and other carbon containing materials through physical or chemical methods, carbonization, washing and a series of processes. It has a highly developed microporous structure and large specific surface area, has a strong adsorption capacity for substances, and has the advantages of high raw material adequacy, acid and alkali resistance, heat resistance, insoluble water and solvents, and appropriate measures can be taken. It is a very good traditional adsorbent, which plays a very important role in urban wastewater treatment.
Activated carbon filter material is generally divided into domestic water purification and sewage treatment in water treatment. The application of activated carbon filter media in water purification is increasingly widespread, because on the one hand, activated carbon has good adsorption characteristics for substances in water, and has strong adsorption capacity for benzene compounds, phenolic compounds, petroleum and petroleum products, detergents, synthetic dyes and many artificial synthetic substances in water, such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) The removal rate indicated by comprehensive indicators such as TOC (total carbon) is generally 70~90; On the other hand, the treatment of tap water by activated carbon will not lead to the loss of Ca and Mg; Deep purification treatment of industrial sewage. For example, the decolorization of printing and dyeing wastewater, the removal of heavy metal ions from electroplating wastewater, the purification and reuse of papermaking wastewater, and the removal of COD from petrochemical industrial wastewater to meet the discharge standard, the activated carbon filter material has been proved to be one of the purification materials. Deep purification and reuse of domestic sewage. Due to the disordered discharge of urban domestic sewage, pollutants such as BOD, COD, VOC, TOC, NH3 – N, NO3 – N, P, and heavy metals are increasingly polluting the surface drinking water sources. The deterioration of water quality in major rivers and lakes in China has become very serious. For the sake of water resource crisis, domestic sewage treatment plants in major cities have included the deep purification and reuse of sewage in their agenda, and activated carbon adsorption Method is one of the currently available deep purification technologies.
For the water source pollution caused by economic development, the application of activated carbon filter material is carried out in the practical development. Large, medium and small water treatment equipment can be used to ensure that the effluent quality meets the standard. It can be said that activated carbon filter material is a very important green technology in water treatment technology. Moreover, the activated carbon filter material can improve the quality of water environment and the level of sewage treatment, and make greater efforts to optimize the environment.
