Ammonia and phosphorus removal compound drug

Abstract

The invention discloses an ammonia and phosphorus removal compound drug and belongs to the technical field of water treatment. The compound drug is of a three-layer concentric circle structure and comprises a core layer, a middle layer and an outer layer from inside to outside in sequence, wherein the core layer is a zeolite layer, the middle layer is a polyferric sulfate layer, and the outer layer is a magnesium chloride layer. The compound drug has a good coagulate effect, can achieve absorptive decolorization and ammonia and phosphorus removal which can not be achieved by other compound drugs, and overcomes the defects of single agentia that only a single effect can be realized, flocculation is instable, and residues are generated easily.

Description

technical field [0001] The invention belongs to the technical field of water treatment, in particular to a compound medicament for removing ammonia and phosphorus. Background technique [0002] With the rapid development of my country's economy, a large amount of waste (sewage) water has not been effectively treated and discharged arbitrarily, resulting in various water pollution, such as eutrophication of water bodies. At present, my country's urban sewage treatment plants generally use coagulants to enhance biological phosphorus removal or tail water deep phosphorus removal. Commonly used coagulants include single coagulants and compound coagulants. [0003] In a single coagulant, polyferric sulfate is easy to corrode pipes and concrete structures, and at the same time, Fe 3+ , the residue makes the water color and produces secondary pollution; the content of aluminum ions in the factory water of polyaluminum chloride is relatively high, and the factory water containing a...

AI Technical Summary

Problems solved by technology

However, most of the current compound agents focus on improving the flocculation effect, and there are few agents with other treatment effects such as adsorption and decolorization, and there are no reports in the literature about agents with high-efficiency coagulation, adsorption and decolorization, and adsorption and phosphorus removal.

[0005] Moreover, when traditional coagulants are used to treat sewage, the efficiency of nitrogen and phosphorus removal is low, and it is difficult to make sewage discharge meet the national standard (TP≤0.5 mg / L)

Another disadvantage of traditional coagulants is that the coagulation effect is unstable, and the impact of changes in raw water quality is greater, and the scope of application is narrow, which brings great inconvenience to water treatment.