In the sewage treatment process, the sewage decolorizing agent is an important part of solving the problem of sewage chromaticity. However, its price is in dynamic change, involving many aspects of factors and requires comprehensive consideration.
The prices of sewage decolorizing agents vary significantly depending on their types. For the adsorption type, activated carbon, the price of coal-based activated carbon is about 2,000 to 4,000 yuan per ton because its raw materials are easy to obtain and the processing process is common. Coconut shell activated carbon can reach 5,000 to 8,000 yuan per ton due to its excellent adsorption performance and high-quality raw materials. For flocculants like polyaluminium chloride, when it is of industrial grade and has a content of about 28%, the market price range is 700 to 1,500 yuan per ton. If a composite product with high-efficiency characteristics is customized, due to the increase in research and development investment and production costs, the price is often more than 5,000 yuan per ton. For oxidizing agents like sodium hypochlorite, the price is relatively affordable, ranging from 800 to 1,200 yuan per ton. However, for new, environmentally friendly products with strong oxidizing properties, due to the huge research and development costs, the price can be as high as 8,000 to 15,000 yuan per ton.
The purchase quantity also has a profound impact on the price. For retail small-package products, such as some brands of decolorizing agents in 250-gram packages, the unit price may reach more than ten yuan. But when enterprises make large-scale purchases, for example, when purchasing more than 10 tons at a time, many suppliers will offer a price discount of 20% to 30%.
The market supply and demand situation also influences the price trend. During the peak production periods of industries such as printing and dyeing and papermaking, the demand for sewage decolorizing agents surges. Once there is a shortage of supply, the price will rise rapidly. Once, during the peak season, a printing and dyeing factory saw its purchase price of decolorizing agents increase by 30% due to insufficient supply. On the contrary, when the market demand is sluggish and there is an oversupply, the price will decrease.
Therefore, when purchasing sewage decolorizing agents, one should not make decisions solely based on the price. It is necessary to comprehensively consider factors such as the characteristics of the sewage, the treatment standards, and the long-term use costs, and select the product with the best cost performance to achieve the dual goals of sewage treatment effect and cost control.
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