Water treatment method for ultrasonically improving oxidation of pollutant with permanganate

Abstract

The invention relates to a water treatment method, particularly a water treatment method for ultrasonically improving oxidation of pollutants with permanganates, and aims to solve the problems in the prior art the speed of oxidation with permanganates is slow, the treatment effect is not stable, the dispersion of produced manganese dioxide nanoparticles is poor and the catalytic rate is low. The method has three forms. The first form comprises the following steps of: pre-treating water; feeding the effluent into a mixing pond, a flocculation pond and a precipitation pond in sequence; filtering the effluent; feeding to a clear water pond and sterilizing. The second form comprises the following steps of: feeding the water into a mixing pond and then pre-treating the water, feeding the effluent to a flocculation pond and then a precipitation pond, filtering the effluent, feeding to a clear water pond and sterilizing. The third form comprises the following steps of: feeding the water intoa mixing pond; adding permanganates, inducers and coagulants under ultrasonic action; feeding the effluent to a flocculation pond and then a precipitation pond; filtering the effluent; feeding to a clear water pond and sterilizing. The method has stable operating effects, is favorable for the dispersion of manganese dioxide nanoparticles which are used as the reduction product of permanganates, improves the catalytic ability of manganese dioxide in oxidation of permanganates, and promotes the decomposition of permanganates to produce highly-active intermediate-state manganese.

Description

Technical field [0001] The invention relates to a water treatment method. Background technique [0002] Toxic and harmful pollutants (such as persistent pollutants, endocrine disruptors, medicines and personal care products, etc.) introduced in the process of human production and life pose a serious potential threat to the quality of urban drinking water. Conventional water treatment processes cannot meet the new "Sanitary Standards for Drinking Water", and new technologies are urgently needed to ensure water quality and safety. Existing urban water supply plants generally use permanganate and permanganate composite chemical oxidation process, which has been widely used in water plants in my country, which can remove odor, color, turbidity, algae toxins, and disinfection by-products in water The precursor can control the growth of algae and stabilize the effluent quality. At the same time, the process also has the problems of slow permanganate oxidation speed, unstable treatment...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of slow permanganate oxidation speed, unstable treatment effect, easy penetration, and poor dispersion of newborn nano-manganese dioxide in the oxidation process of permanganate and permanganate compound agents used in existing urban water supply plants. , slow catalytic speed, and easy to clog the filter, and provide a water treatment method that utilizes ultrasound to strengthen permanganate oxidation of pollutants