Flocculation method for removing particulate matters in waste water

Abstract

The invention discloses a flocculation method for removing particulate matters in waste water. The flocculation method comprises the following steps: dissolving degumming silk in water, then adding tetramethylammonium iodide, manganese acetate and cobalt nitrate, performing uniform mixing, performing a reflowing reaction for 8 hours, and then performing drying so as to obtain a fibroin membrane; then processing the fibroin membrane, and performing cryogenic grinding so as to obtain fibroin powder; then dispersing the fibroin powder in ethanol, adding tetramethyl orthosilicate, 2-aminobutyric acid and diethyl phosphite, performing stirring at room temperature, then adding a silane coupling agent, performing stirring for an hour, and performing suction filtration so as to obtain a solid compound; adding sodium acrylate and 2-acrylamido-methylpropanesulfonic acid into water, performing stirring, adding bis(2,3-epoxycyclopentyl)ether, and performing stirring; then adding the solid compound and azodiisobutyronitrile, performing a reaction at 90 DEG C for 4 hours, and finally performing drying so as to obtain a flocculant; dispersing the flocculant in ethanol so as to obtain mixed liquor; then adding the mixed liquor into waste water; separating out flocculating constituents, namely completing the removal of the particulate matters in the waste water, wherein the removing rate is 95% or higher.

Description

technical field [0001] The invention relates to a wastewater treatment technology, in particular to a flocculation method for removing particulate matter in wastewater, and belongs to the field of environmental protection. Background technique [0002] The molecular chain of polyacrylamide is very long, and its amide group can be affine and adsorbed to form hydrogen bonds with many substances, which enables it to bridge between adsorbed particles and connect several or even dozens of particles together , forming flocs and accelerating the sinking of particles. This is similar to the general flocculation mechanism, that is, one molecule can adsorb several particles at the same time, making them pull together and settle rapidly. Flocculation is a very complex physical and chemical process, and now most people think that the mechanism of flocculation is two processes of coagulation and flocculation. The coagulation process is the process in which colloidal particles destabili...

AI Technical Summary

Problems solved by technology

However, the existing composite water treatment materials are basically based on physical effects on pollutants, which leads to the disadvantages of small flocculation capacity and slow adsorption saturation time, which cannot meet the requirements of industrial applications.

[0003] And due to the development of nanotechnology, many nanomaterials are widely used, such as inorganic additives, polymer nanoparticles, etc.; while the extensive use of these nanoscale particles promotes the improvement of material performance, it also produces a lot of nanoparticle waste. Many particles will be discharged into the water, forming nano-particle pollution. These tiny nanoparticles are far more harmful to the human body than micron-sized particles; however, existing water treatment technologies are basically ineffective for small-sized particles