Litchi exocarp heavy metal adsorption granules and preparation method thereof

Abstract

The invention discloses litchi exocarp heavy metal adsorption granules. The granules are characterized by being prepared from the following raw materials in parts by weight: 30-40 parts of litchi exocarp, 10-15 parts of tourmaline powder, 3-5 parts of diatomite, 3-5 parts of light calcium carbonate, 0.1-0.2 part of sodium benzoate, 1-2 parts of glycerin, 0.3-0.5 part of sorbic acid, 0.1-0.2 part of humic acid, 0.1-0.2 part of cetearyl glucoside, 0.3-0.5 part of sodium lauroamphoacetate and 6-12 parts of bonding auxiliary material. The adsorption granules have the advantages that the adsorption granules have high adsorption capacities, not only can be used for effectively adsorbing and removing heavy metal ions in water bodies but also have certain adsorption and removal effects on organic nitrogen and phosphorus in the water bodies and have strong water body purification capacities; the main raw materials are agricultural wastes, so that the adsorption granules have the effects of saving energy and utilizing wastes, have good economic properties and do not cause secondary pollution to the environment.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a lychee shell heavy metal adsorption granule and a preparation method thereof. Background technique [0002] Due to the rapid development of industry, heavy metal pollution is becoming more and more serious. Among them, industries such as electronics, electroplating, tanning, and mineral processing produce a large amount of industrial wastewater containing heavy metal ions every year. The subsequent treatment of heavy metal wastewater has always been the focus of attention and research. . Heavy metals cannot be biodegraded in the environment, tend to be enriched in living organisms, can accumulate in the human body through the biological chain, destroy normal physiological metabolic activities, and even cause "three causes" (carcinogenic, teratogenic, and mutagenic) Substances are extremely harmful, so economical and effective methods are needed to remove various heavy metal ions...

AI Technical Summary

Problems solved by technology

[0003] Traditional heavy metal-polluted wastewater treatment methods include chemical precipitation, ion exchange, membrane separation, solvent extraction, and redox methods. They have their own advantages, but they all have limitations, mainly reflected in high cost and high energy consumption. , Difficult operation, easy to produce secondary pollution, etc., especially when dealing with low-content heavy metal polluted wastewater, the operating costs and raw material costs are relatively high