This paper analyses odor concentration of wastewater before and after disposal in several typical ndustry by the method of triangle odor flaskes which is introduced from abroad.

Changing regulation of odor concentration was achieved by continuously check odor pollutants in fixed time at selected points from village nearby boundary of landfill sites.

By analyzing the characteristics of odor concentration,the prediction theory and model for dimensionless odor concentration were proposed based on Gauss model for atmospheric diffusion.

Rapid determination of the Ozone concentration in water by indigo blue reagent;

On-line test in Ozone concentration in intelligence for instruments;

Influences of the meteorological factorson the ozone concentration near the ground;

According to measuring precision,continuity,concentration of ozone and economy,the characteristics and befitting situation of the different methods are analyzed.

The real time monitoring of the concentration of ozone in water is important to ensure the quality of water.

This article described the sterilization characters of ozone and how to control distributing uniformity of ozone gas during the using of freeze-dryer and to prevent the decline of concentration of ozone as well as to reached the time control of sterilization.