Method for removing pentavalent antimony pollutant in water through electrochemical method

Abstract

The invention discloses a method for removing pentavalent antimony pollutant in water through an electrochemical method, and belongs to the technical field of water treatment. The method comprises the following steps: in an electrochemical reactor, serving an iron electrode as a positive electrode and serving a copper plate or a nickel plate as a negative electrode; adjusting a potential of hydrogen (pH) value of the to-be-processed water containing the pentavalent antimony pollutant to be 3-7, introducing the to-be-processed water into the electrochemical reactor, and adjusting the current density to be 10-30 amperes per square meter, the area of electrode plates and the size of the to-be-processed water to be 0.5-1 square meters / cubic meters, a space distance of the electrode plates to be 1-8cm, and electrochemical treatment time to be 10-40 minutes; and adopting a direct current power supply to supply power. The electrochemical method not only can effectively remove pentavalent antimony pollutant, but also can remove trivalent antimony pollutant.

Description

technical field

[0001] The invention belongs to the technical field of water treatment, in particular to an electrochemical method for removing pentavalent antimony pollutants in water. Background technique

[0002] In recent years, the problem of heavy metal pollution caused by industrial wastewater discharge has become increasingly prominent, and the effective removal of heavy metal ions in water has always been a research hotspot in the field of water treatment technology. The heavy metal antimony is toxic and carcinogenic to the human body and organisms, and can cause diseases in the liver, skin, respiratory system and cardiovascular system. Antimony poisoning has the characteristics of long-term latency. The existence forms of antimony in antimony pollutants are trivalent and pentavalent. Trivalent antimony is easy to remove from water, but pentavalent antimony is difficult to remove because of its high electronegativity and high solubility in water. Antimony in surfac...