Filtering material used for sewage treatment

Abstract

The invention discloses a filtering material used for sewage treatment. The filtering material used for sewage treatment comprises the following main raw materials in part by weight: 7-11 parts of sodium allysulfonate, 20-30 parts of silica gel, 8-20 parts of polyethylene glycol, 5-8 parts of dimethyl malonate, 7-14 parts of lead stearate, 10-18 parts of nano modified activated carbon, 10-15 parts of medical stone, 5-8 parts of straw fiber, 2-6 parts of alums, and 0.8-2.0 parts of calcium carbonate. A preparation method of the nano modified activated carbon comprises the following steps of mixing and modifying bamboo charcoal and titanium dioxide, then adding polyepichlorohydrin and ethyl acetate, stirring and drying. Through adoption of the filtering material used for sewage treatment, the physical and chemical indexes of the seriously contaminated sewage reach the standard of GB18918-2002; and the treatment process is simple, the use amount of chemical agents is low, the treatment effect is good, the performance is stable, the recovery level of the contaminated sewage is high, the cost of a treating agent is effectively reduced, and the filtering material has an excellent economic benefit and a wide social benefit.

Description

technical field [0001] The invention relates to the technical field of sewage, in particular to a filter material for sewage treatment. Background technique [0002] The industrial development in the last century brought a dramatic increase in population. caused a sharp deterioration of the current environment. In the 21st century, mankind is facing many crises, and the shortage of water resources is the biggest crisis facing mankind. The shortage of water resources has intensified, and the problem of water pollution has become increasingly serious and continuously threatens human beings. In order to solve this crisis, scientists from all over the world are looking for effective methods and ways to obtain pure water resources. Desalination of seawater and reuse of sewage treatment are two effective methods. At present, many countries have obtained pure drinking water and domestic water through seawater desalination technology. Thus partially solving the water crisis. H...

AI Technical Summary

Problems solved by technology

However, there are certain difficulties in the actual treatment of these refractory organic pollutants, and the treatment effect is not ideal.