A kind of magnetic sewage treatment agent and preparation method thereof

Abstract

The invention discloses a magnetic sewage treatment agent and a preparation method thereof. The magnetic sewage treatment agent of the present invention is made of 2%-3% sodium alginate, 32%-38% acrylamide, 11%-13% acrylic acid, 10%-15% loaded nano TiO 2 It is prepared from type fly ash, 3%-13% cyclodextrin and 14%-20% functionalized magnetic particles. The magnetic treatment agent uses sodium alginate and polyacrylamide polymer materials to coat fly ash and magnetic materials in the form of chemical bonding. It combines the advantages of flocculant, adsorbent, photocatalyst and magnetic separation technology, and has a high The separation and recovery rate has reached 99%, and it has a good removal effect on organic pollutants and heavy metal pollutants in sewage. COD, SS, lead, cadmium, copper, mercury, chromium (Ⅵ), The content of arsenic has reached the provisions of the national standard of the People's Republic of China, the surface water environmental quality standard GB3838-2002, and has broad application prospects in the field of sewage treatment.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a magnetic sewage treatment agent and a preparation method thereof. Background technique [0002] With the acceleration of industrialization and the improvement of human living standards, the discharge of industrial wastewater and domestic sewage is increasing, and the problem of water pollution is becoming more and more serious, which makes people pay a heavy price. Due to the complex sources of industrial wastewater and domestic sewage, such as the different components of factory wastewater, it is necessary to research and develop a technology suitable for the treatment of various pollutants. [0003] As a treatment method with simple equipment, easy operation and no secondary pollution, adsorption method is currently the most promising wastewater treatment method. However, the existing conventional adsorbents have low adsorption capacity, poor stability, single function, and di...

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Problems solved by technology

[0003] As a treatment method with simple equipment, easy operation and no secondary pollution, adsorption method is currently the most promising wastewater treatment method. However, the existing conventional adsorbents have low adsorption capacity, poor stability, single function, and difficulty in separation and recovery. The problem

[0004] The output of fly ash in my country is huge. If it is not treated and placed in the environment, it will easily cause dust and pollute the environment. Fly ash is a high-temperature sintered product with a loose and porous structure and a large specific surface area. These characteristics make powder Coal ash has strong adsorption properties and can be used as an adsorption material to treat industrial wastewater. However, the direct use of fly ash for wastewater treatment has the following disadvantages: First, as fly ash is used as a powder, there will be a large degree of dust during construction. problem, and the powder is easy to aggregate after adding sewage, which reduces the contact rate between the adsorbent and wastewater, reduces the adsorption capacity, and at the same time, it is not easy to separate from the wastewater after treatment, which reduces the efficiency of wastewater treatment; Limited capacity, low adsorption capacity and adsorption stability

But purely with nano-TiO 2 As a catalyst, there are also the following problems in sewage treatment: one is that nano-TiO 2 It is easy to agglomerate itself, making nano-TiO 2 Reduced exposure to pollutants, resulting in reduced utilization

The second is nano TiO 2 The particle size is small, the density is low, it is not easy to separate from the water after sewage treatment, and it cannot be used for secondary use, resulting in waste of resources and easy to cause secondary pollution to water bodies