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Chromium is an important metal material, which is widely used in metallurgy, chemicals, refractories and other industries. its upstream is chromium ore,the middle reaches include ferrochrome, chromium salts, downstream stainless steel, special steel, coatings, electroplating and so on. among t

Chromium is an important metal material, which is widely used in metallurgy, chemicals, refractories and other industries. its upstream is chromium ore, the middle reaches include ferrochrome, chromium salts, downstream stainless steel, special steel, coatings, electroplating and so on. among them, 90% of the chromium ore is processed into chromium ferroalloys, which is used as raw materials for stainless steel and special steel, of which stainless steel is the largest. about 5% of the chromium ore is processed into chemical chromium salts, and 5% of the chromium ore is used as a refractory material for the production. chromium pollution is mainly caused by industry. chromium mining, smelting, chromium salt manufacturing, electroplating, metal processing, tanning, paint, pigments, printing and dyeing and other industries, as well as fuel combustion emissions of chromium-containing waste gas, waste water, waste residue are all sources of chromium pollution. electroplating chromium-like pollution sites show the characteristics of chromium, nickel, copper and zinc multi-metal composite pollution. tanning chromium pollution sites have the characteristics of complex chromium organic matter pollution. remediation of chromium-contaminated soil is imminent.

at present, the remediation technology of chromium-contaminated soil is mainly based on the principle of reduction and stabilization of hexavalent chromium. specifically, it includes chemical reduction, chemical elution, electrodynamic repair and bioremediation technology. among them, chemical leaching is widely used in hexavalent chromium pollution remediation sites due to its advantages of thorough remediation, fast effect and short cycle.

Chemical leaching techniques include in situ soil leaching techniques and ectopic soil leaching techniques. The in situ soil leaching technology is to inject the eluent into the chromium-contaminated soil, transfer pollutants such as chromium from the soil to the eluent through the dissolution of the eluent, and then withdraw the chromium-containing eluent for treatment. Ectopic soil leaching refers to the use of special cleaning devices to clean the excavated chromium-contaminated soil, and the water-soluble Cr(VI) and other pollutants in the soil are gradually released into the liquid phase The washed soil and chromium-containing cleaning solution are then obtained by solid-liquid separation, and the cleaning liquid is then treated.

China's chrome chemical enterprises are numerous and widely distributed, about 70% of the world's chromium chemical plants are located in China, chromium chemical site pollution is more serious and more complex, its risk prevention and control and remediation governance is a key issue that needs to be solved urgently. In recent years, desen environment has developed a soil remediation equipment called the skid-mounted soil leaching module after the characteristics of composite heavy metal pollution. This device not only has a beautiful appearance but also a variety of functions, and is one of the most cost-effective soil leaching and repair equipment. In addition to high performance and high output, it is also equipped with 5G intelligent modules, which solve the problems of remote operation and real-time viewing. The 24-hour uninterrupted after-sales guarantee service also allows many customers to have no worries. Feel free to call for a free chromium contaminated soil remediation solution.