Sulfuric acid is an important industrial raw material that can be used to manufacture fertilizers, drugs, explosives, pigments, detergents, batteries, etc. It is also widely used in industries such as purifying petroleum, metal smelting, and dyes. When sulfuric acid is mixed with water, it also releases a large amount of heat energy and has strong corrosiveness and oxidizing properties. Therefore, sulfuric acid is one of the hazardous chemicals and is subject to national regulations.

However, due to the different raw materials used in the production of sulfuric acid, the production process, management and operation level, and the use of sulfuric acid, the composition and emissions are also different. Some substances have high levels of arsenic and some have high levels of copper, and these substances are harmful to the environment and human health. Failure to handle them in a timely manner not only does not meet national environmental protection requirements, but also causes great pollution to the environment. Therefore, the treatment of industrial sulfuric acid wastewater is a necessary step. So how to treat sulfuric acid acidic industrial wastewater? Below, the editor will take you to understand:

In industries such as pigments, detergents, batteries, pigments, detergents, batteries, purified petroleum, dyes, and metal smelting, raw materials are used. Therefore, these industries will produce industrial wastewater containing sulfuric acid during the processing.

Lime method, original oxidation method, and original iron salt method can be used to treat acidic industrial wastewater:

Lime method: This is a commonly used method in acidic wastewater treatment equipment, often used for the absence of heavy metal ions and p (As)< The lime method has a simple water treatment process, low operating cost, and high acid removal efficiency for low arsenic acidic wastewater with a concentration of 40mg/L.

Primary oxidation method: Primary oxidation is an addition of oxidation treatment on the basis of lime method, which can treat heavy metal ions free, p (As)> High arsenic acidic wastewater with a concentration of 200mg/L is converted into iron or calcium arsenate through the reaction of bleaching powder or hydrogen peroxide as oxidants in the acidic wastewater. After precipitation reaction, the calcium or iron arsenate in the wastewater can be removed.

Acidic industrial wastewater containing sulfuric acid can also be treated with lime based iron salt method, which is applicable to p (As) at 40~ The specific water treatment plan for 200mg/L acidic wastewater can be found at Hongsen Environmental Protection for detailed information. The treated industrial sulfuric acid waste liquid should meet national environmental protection requirements, ensure safe production and safe discharge.

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