Adsorption material for treating phosphorus wastewater and use thereof

Abstract

The invention relates to an adsorption material for treating phosphorus wastewater and use thereof. The adsorption material consists, by mass percent, of 50 to 70% of flyash zeolite and 30% to 50% of natural zeolite and is prepared by homogenously mixing the flyash zeolite with the natural zeolite based on the above proportion, the above resultant adsorption material is added, with the mass ratio of phosphorus to the adsorption material being 1: 100 to 200, to phosphorus wastewater with the pH from 3 to 10 and the phosphorus concentration from 0 to 150mg / l in order to treat the phosphorus wastewater, the contact time is 1 hour, the removal rate of phosphorus is larger than 90%, and the pH of zeolite subsequent to treatment is close to be neutral. The flyash zeolite resulting from modified synthesis in the invention not only has significant phosphorus adsorption effect, but can also realize the effective utilization of wastes to reduce the pollution of flyash to environment. Mutual combination of the flyash zeolite and the natural zeolite results in synergistic action for phosphorus adsorption, reducing the content of phosphorus in wastewater effectually. Therefore, the adsorption material of the invention for treating phosphorus wastewater has the advantages that the adsorption capacity is high, the utilization of wastes is favorable for environmental protection and the like.

Description

technical field [0001] The invention relates to the field of wastewater treatment, in particular to an adsorption material for treating phosphorus-containing wastewater and its application. Background technique [0002] The discharge of a large amount of phosphorus-containing urban comprehensive sewage and industrial wastewater has caused serious pollution to water bodies. Phosphorus, ammonia nitrogen and organic matter in water are the main causes of water eutrophication, pollution of rivers and lakes, water pollution of offshore waters and flooding of red tides. Phosphorus removal in water is one of the important contents in controlling water pollution. Phosphorus-containing wastewater (dephosphorization) treatment agent is used to treat water, which can achieve the purpose of removing phosphorus in different water qualities, so that the treated wastewater can be discharged or reused. [0003] In our country, the research on phosphorus recovery from sewage treatment plan...

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of conventional membrane technology for phosphorus removal, high cost of biological phosphorus removal, low removal rate of phosphorus removal by chemical precipitation and large amount of sludge, and based on environmental protection and waste utilization, provide a A kind of adsorption material and application for treating phosphorus-containing wastewater