Traditional methods such as chemical processing methods and physical processing methods currently used in membrane separation equipment in my country have limitations in use to varying degrees. The biological activated carbon adsorption purification technology is easy to operate, its performance also has outstanding performance, and its development prospects are good. Activated carbon is a kind of adsorbent widely used in domestic sewage treatment, and it is divided into two types: granular and powder. Powdered activated carbon has a long history in sewage treatment at home and abroad. The raw materials for the preparation of activated carbon can be seen everywhere, including husks, wood, garbage waste, etc. Among them, the husk is the best choice among activated carbon raw materials, but due to the constraints of its resources, storage and concentration, the price is too expensive.
According to statistics, powdered activated carbon purification technology has been used to treat water for 70 years. Since the use of powdered activated carbon in the United States to eliminate the smell of chlorophenols, the effective way to remove impurities in water is still activated carbon purification technology. , Its purification effect has been approved by many countries.
With the development of my country's economy, the share of water resources is becoming more and more disproportionate to the rate of population growth. Not only the industrial sector, but the urban economic development also pollutes the environment to varying degrees. At present, our country has been studying the method of preparing activated carbon using garbage waste as raw materials, and wastes such as walnut shells, bamboo wood and tobacco stems have been used as raw materials.
