Phosphorus removal adsorption microsphere, adsorption column and application in water treatment

Abstract

The invention discloses a phosphorus removal adsorption microsphere, which is prepared by the following method: step 1, crushing: crushing raw materials including desulfurized gypsum, steel slag, bentonite, knar clay and glutinous rice flour to 80-120 meshes; step 2, weighing and mixing: uniformly mixing the crushed raw materials to form a mixture, and mixing the mixture according to certain partsby weight; 3, granulating: adding water into the mixture, and granulating to obtain granules with the size of 1-2 mm; and step 4, drying: drying the particles, and firing the dried particles to finally obtain the phosphorus removal adsorption microspheres. The phosphorus removal adsorption microsphere has the advantages of low cost, simple preparation process and realization of resource utilization of solid wastes. The invention further provides an adsorption column filled with the phosphorus removal adsorption microspheres and application of the adsorption column in wastewater treatment. Theinvention also discloses an application of the phosphorus removal adsorption microspheres in slaughter wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to an adsorption microsphere for phosphorus removal, an adsorption column and an application in water treatment. Background technique [0002] Phosphorus is an important substance that causes water eutrophication and environmental pollution. The serious pollution of natural water bodies has been widely concerned in our country. The main manifestations of its pollution are eutrophication and algae growth. Eco-environmental effects of nitrogen and phosphorus compounds. These pollutants have become hot spots and difficulties in my country's environmental protection, and they are very difficult control problems. [0003] Slaughter wastewater has high COD, BOD 5 , ammonia nitrogen and phosphorus, etc., and have good biodegradability. At present, the commonly used treatment method for high-concentration slaughter wastewater in China is biological treatment, but the m...

AI Technical Summary

Problems solved by technology

[0005] Many studies in China use a single mineral material (such as zeolite) or industrial waste (such as coal cinder) to effectively remove a single pollutant, but it is difficult to synchronize Removal of nitrogen and phosphorus, which is mainly due to the presence of ammonia nitrogen in the form of cations, while phosphate is mainly in the form of anions

There are also a small number of researchers who use different mineral materials to grind them into powders with a certain particle size, mix them in a certain proportion, and realize the simultaneous removal of ammonia nitrogen and total phosphorus through salt modification and organic modification. High cost and other problems, and it is impossible to directly use powder as the adsorption material of wastewater in actual projects. If the flow rate is too high, the adsorption materials will be washed away, resulting in the loss of adsorption materials and the decline of treatment effect, which also causes difficulties for the actual operation, maintenance and management of the project.