Chemical dry filtration deodorization technology is a new deodorization technology from the United States. Its core is the filter material treated by special process. The filter material is divided into many kinds according to its internal chemical composition and use, but it basically has the following characteristics: it uses activated alumina (i.e. aluminum oxide) as the substrate to synthesize manganese oxide, magnesium oxide, sodium permanganate, phosphoric acid and other catalytic oxidants, It is shaped into a honeycomb porous structure similar to activated carbon to achieve the purpose of deodorization through physical adsorption and chemical reaction. Physical adsorption is the main way for chemical adsorption filter material to catch and collect odor molecules. Through physical adsorption, various odor molecules in waste gas can be effectively attached to chemical filter material to provide conditions for subsequent chemical reaction decomposition process. Chemical reaction is the main means of deodorization, Through the synthesis of effective chemical components on the filter material, the adsorbed pollutants are chemically decomposed to produce stable salts or other monomer substances, so as to eliminate the influence of odor substances and achieve the purpose of final deodorization.
The deodorization process has remarkable effect, especially for the low threshold odor components that can not be treated or completely treated by the general treatment process on the market; The deodorization equipment covers a small area and is suitable for the treatment of waste gas with various concentrations. It has no strict requirements on external influencing factors (such as temperature and humidity) and has strong impact resistance; The reaction products can be directly landfilled without secondary pollution.
Chemical dry filtration deodorization equipment has the following advantages in the application of pump station:
Chemical dry filtration deodorization technology has very high removal efficiency for odor substances. Except that substances with relatively stable chemical molecular chain such as benzene, toluene and xylene are not easy to react, it has high removal efficiency for other odor substances, including sulfur-containing substances (such as hydrogen sulfide, sulfide and mercaptan), nitrogen-containing substances (such as ammonia, methylamine and dimethylamine), volatile organic compounds, etc, Its broad spectrum and high efficiency make it have incomparable advantages in the control of odor intensity. Its control of dimensionless odor concentration can even reach less than 50, which has been proved in practical engineering cases. Therefore, in the deodorization design of pump station in the future, if chemical dry filtration technology is adopted, the form of organized high-altitude emission can be completely abandoned, The adoption of low altitude emission mode (height within 5m) shall be sufficient to meet the standard of unorganized emission level II (dimensionless 20) at the plant boundary.