At the press conference of the Ministry of Ecology and Environment, a new face caught everyone's attention:

At the press conference, comprehensively reviewed the progress and effectiveness of water ecological environment protection work, and proposed the next step of water management roadmap. It may sound easy to reduce the proportion of Class V water quality sections in national surface water by 0.5 percentage points, but what if the base is only 1.2 percentage points?

Faced with the increasingly complex composition of sewage, traditional sewage treatment methods are gradually exposed to shortcomings. In this context, ozone advanced oxidation technology, as an efficient and environmentally friendly new sewage treatment technology, has attracted much attention. This paper will deeply analyze the practical application of advanced ozone oxidation technology in sewage treatment, and discuss its market prospect.

Ozone catalytic advanced oxidation technology is a patented technology independently developed by Zhiwei Environmental Protection to remove refractory organic matter in sewage by the action of hydroxyl free radicals (patent number: ZL 202222149838.X). Through the effect of electromagnetic (EM) shear field, the technology changes the physical, chemical and molecular mechanical properties of the treated sewage, increases the ozone dissolution ability, improves the reaction probability of ozone and catalyst, shorens the reaction time of ozone and organic pollutants, and greatly improves the catalytic efficiency. At the same time, Zhiwei Environmental also developed a number of high-performance, inexpensive, stable homogeneous/heterogeneous ozone catalysts. Ozone is directly excited under the action of the catalyst, producing a large number of hydroxyl radicals (·OH) with strong oxidation, rapid oxidation, destruction of organic pollutants, so as to achieve the purpose of removing COD.

Application: paper making, printing and dyeing, pharmaceutical, chemical, paper making and other industrial wastewater and municipal sewage upgrading.

2. Technical advantages

(1) The amount of ozone added is low, which is about 50% of the current similar advanced oxidation technology;

(2) Ozone dissolved gas efficiency as high as 95%, in the world's leading level;

(3) High catalytic efficiency, long application time (the earliest engineering application is 2004), homogeneous catalytic technology is the first in China, and the catalytic effect is stable;

(4) With many project achievements and rich experience, dozens of projects have been completed, and the daily water treatment is close to 5 million m³/d;

(5) The catalyst filling thickness is lower than that of the same industry, the general filling thickness is 300-500mm, and the investment cost is low;

(6) The catalyst has a long service life and does not need to be replaced within 10 years;

(7) The degradation of organic pollutants is almost non-selective, the reaction rate is fast, and the operation is stable and reliable;

(8) High degree of system automation, simple operation and maintenance of equipment;

(9) The system does not produce secondary pollution (sludge)