Treatment method for reducing nitrosodimethylamine in water by catalyzing zero-valent iron through copper corrosion product

Abstract

The invention relates to a treatment method for reducing nitrosodimethylamine in water by catalyzing zero-valent iron through a copper corrosion product. The method comprises the following steps of adding 5 to 10mmol/L of copper corrosion product and 10 to 20g/L of iron powder into water containing the nitrosodimethylamine; adjusting a pH value to be 6.5 to 7.5, placing on a rotating reactor for rotating at the rotating speed of 40 to 80r/min and reacting for 3 to 24 hours, wherein the copper corrosion product is one of copper oxide, cuprous oxide, copper hydroxide, basic cupric carbonate and copper ions. According to the treatment method disclosed by the invention, in the process of using the copper corrosion product to catalyze the zero-valent iron for reducing NDMA (Nitrosodimethylamine), an obvious catalytic effect (the removal rate of the NDMA can reach 99.9 percent) is realized, and the NDMA as a strongly carcinogenic substance in the water can be effectively controlled, so that the safety of drinking water is guaranteed.

Description

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AI Technical Summary

Benefits of technology

This patented technology helps reduce harmful chemicals from polluted waters through reducing certain compounds that cause cancer or other health problems. It involves adding an element called Fe2O3 into contaminated areas where it reacted with sulfur dioxide gas, causing them to lose their ability to absorb oxygen atoms. By doing this, these chemically reactive molecules help remove unwanted materials such as organic solvents like benzene, chloroform, tetrachloromethane, etc., making cleanup easier for people who want safe drinkable water without any residue left behind after use.

Problems solved by technology

This patents discuss various methods for controlling nitrogen compounds such as dinitrosodi meldonium (DNM). Different techniques include chemical treatments like adding sodium hydroxide solution into waste waters containing these harmful organisms before disposal without affecting them completely. However, due to the slow reactivity and lack of selective interactions between different components, current commercial processes require multiple steps involving expensive equipment.

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