Catalytic ozonation water treatment method employing carbon nano tube

Abstract

The invention discloses a catalytic ozonation water treatment method employing a carbon nano tube. The method comprises the following steps: carrying out pretreatment on to-be-treated water, carrying out catalytic ozonation treatment employing the carbon nano tube, and discharging water after post treatment. The method is characterized in that the molar ratio of a catalyst caron nano tube to ozone in the catalytic ozonation process of the carbon nano tube is (0.01-5) to 1; the adding amount of ozone is 0.1-1,000mg / L; the water velocity in the catalytic ozonation reactor is 1-20m / h; the contact time of the ozone and the carbon nano tube and water is 30 seconds to 300 minutes; and the carbon nano tube is a single-wall carbon nano tube, a dual-wall carbon nano tube, a multi-wall carbon nano tube, a directional growth carbon nano tube and / or a carbon nano fiber of loading active matters.

Description

technical field [0001] The invention relates to a water treatment method. Background technique [0002] At present, more than 90% of my country's drinking water sources are polluted, and typical pollutants are organic pollutants such as pesticides, algae toxins, and organic solvents, and conventional water treatment processes are difficult to effectively remove these organic pollutants. Ozone oxidation technology has been used in the field of water treatment for a long time, and it is widely used in special industries that require high water purity. However, the ozone oxidation technology still has the problem of strong ozone oxidation selectivity, which makes it difficult to effectively remove persistent and refractory organic pollutants in water; most of the oxidation products are organic acids. At present, the catalytic ozonation water treatment process using activated carbon as a catalyst is mostly used to replace the ozone oxidation technology. Although activated carbo...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that active carbon is easy to be oxidized and decomposed by ozone in the current catalytic ozonation process using activated carbon as a catalyst, has low strength, is easy to break, has a short service life, and needs to add an intercepting device, which may dissolve sulfur and other inorganic impurities. problem, and a carbon nanotube catalytic ozonation water treatment method provided