For sewage containing heavy metals that cannot be decomposed and destroyed, chemical precipitation method, adsorption method and heavy metal coagulation capture method are generally used. The chemical precipitation method mostly uses the co-precipitation method of iron salt (polymeric ferric sulfate) to prepare ferrite powder from wastewater to increase and remove heavy metal ions. The heavy metal adsorption method is to use the flocculation agent to adsorb and settle the heavy metals in the sewage. So what is the heavy metal capture method?
Polymeric ferric sulfate heavy metal capture method for heavy metal pollution treatment Polymeric ferric sulfate treatment of heavy metal ions
The heavy metal capture method is a method of capturing and treating heavy metal ions in sewage by using polymerized ferric sulfate. Polymeric ferric sulfate can chemically react with various metal ions in wastewater to rapidly generate insoluble and easy-to-remove precipitates. The heavy metal capture method can also be said to be a method of chelating heavy metals in sewage.
Removal of Heavy Metal Ions by Polymeric Ferric Sulfate
1. The polyferric sulfate used in the heavy metal capture method is not toxic.
2. Polyferric sulfate has a wide range of applications and is simple to use, and it can remove all dissolved residual heavy metal ions.
3. Polymeric ferric sulfate is safe and easy to store. Its sediment is not easily re-released into the environment.
4. The heavy metal capture method of polyferric sulfate is also suitable for heavy metal pollution such as mercury and cadmium which are difficult to deal with.
The coagulation application principle of polyferric sulfate is that polyferric sulfate and heavy metals are chelated into water-insoluble substances with strong stability and precipitate. From another method, polyferric sulfate can not only be used as an acid-base neutralizer for sewage treatment, but also can be used for coagulation treatment of heavy metals in sewage.
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