Why is it difficult to treat organic pollution chemical waste salt?

08/13/2024 16:26:47

In the industrial technology issue, it is mentioned that "how to make high-value use of organic pollution chemical waste salt to promote high-quality development of the chemical industry?" Sun Yafei introduced that organic pollution chemical waste salt is chemical waste salt polluted by organic matter. The most typical example of using industrial salt in industry is in boiler rooms, where salt is added to soften water and prevent the formation of scale. These salts will be eliminated as waste salts after use, and the sodium chloride will be replaced by other salts, introducing some organic matter. The treatment of this type of organic pollution chemical waste salt is more complex, and the pollution it brings is also more serious. If only inorganic salts are discharged into the sea, the impact is only on the salinity of the seawater. But if organic pollution and chemical waste salt are discharged into the sea, these organic substances may become food for algae and other bacteria, causing eutrophication of seawater. If organic matter contains elements such as phosphorus and sulfur that are crucial for biological growth, it may even cause serious ecological disasters such as red tide. Even if it is not discharged into the sea, it can still bring unpredictable risks in inland water bodies. The current treatment method mainly involves adding strong oxidants such as potassium permanganate and chromic acid to directly oxidize and decompose organic matter, but these strong oxidants themselves also have strong toxicity. Some new research directions are attempting to treat organic matter through biological fermentation, but most organisms cannot tolerate such high concentrations of salt, and these issues still need to be addressed. Sun Yafei stated that the current level of treatment for organic pollution chemical waste salt is still very limited. In order for the chemical industry to achieve high-quality development, this hard bone must be gnawed on, otherwise the pollution caused by it cannot be borne by the ecosystem. 润色译文