Method for preparing filtering absorbing material used for water treatment

Abstract

The invention relates to a preparing method for a filtering and absorbing material to process the water. The method is to place the raw material with grain diameter smaller than ten millimeter between 120 DEG C and 150 DEG C for four minutes and dry the raw material between 150 DEG C and 400 DEG C; then the temperature is raised by 6 to 8 DEG C per minute until reaching 510 to 650 DEG C, and keep the temperature for forty to seventy minutes to carbonize the material; and then the temperature is raised by 6 to 8 DEG C per minute until reaching 800 DEG C, firstly activate with the water vapor and the activate with the smoke for ten to twenty minutes between 840 DEG C and 950 DEG C. The raw material of the invention can adopts the anthracite, the meager coal, the dry coal, the coking coal, the fat coal, the bottle coal, the flaming coal and the lignite and other coal processing products such as coke, the goal coal and the coke powder. The raw material of the filtering and absorbing material of the invention is cheap and easy to get; the preparing method is also very simple; and the invention is applicable to large batch production.

Description

technical field [0001] The invention belongs to a material processing method, and in particular relates to a preparation method for processing coal into filter and adsorption materials for treating industrial waste water and urban sewage. Background technique [0002] At present, most urban sewage and industrial wastewater (especially industrial wastewater with large discharge volume) are treated by biochemical, anaerobic, aerobic, activated sludge, chemical agents and other methods. The above methods occupy a large area and consume high power , A large amount of sludge is produced during the treatment process, and it cannot treat wastewater that is difficult to biochemically such as high salt, high acid, and high COD content. At present, there are many kinds of solid adsorbents used in water treatment, such as activated carbon, charcoal, bentonite, diatomaceous earth, calcium carbonate, slag, coke powder, slag, etc. The above-mentioned adsorbents are either high in producti...

AI Technical Summary

Problems solved by technology

[0002] At present, most urban sewage and industrial wastewater (especially industrial wastewater with large discharge volume) are treated by biochemical, anaerobic, aerobic, activated sludge, chemical agents and other methods. The above methods occupy a large area and consume high power , a large amount of sludge is produced during the treatment process, and it cannot treat wastewater that is difficult to biochemically such as high-salt, high-acid, and high-COD content

At present, there are many kinds of solid adsorbents used in water treatment, such as activated carbon, charcoal, bentonite, diatomaceous earth, calcium carbonate, slag, coke powder, slag, etc. The above-mentioned adsorbents are either high in production cost, or have small specific surface area and low adsorption capacity. Low, especially for the treatment of urban sewage and industrial wastewater with large discharge and high concentration of pollutants, or the treatment cost is high or the amount of adsorbent is large or frequently replaced, so it is rarely used in the field of industrial wastewater and urban sewage treatment

Is it possible to produce a low-cost, widely used water treatment, especially urban sewage and industrial wastewater with large discharge volume and high pollutant concentration, so as to reduce the floor area and power consumption of urban sewage and industrial wastewater treatment facilities, and waste water treatment The cost is lower than the cost of biochemical treatment and can deal with high-salt, high-acid, high COD content and other difficult-to-biochemical filtration and adsorption materials, which have not been reported so far.