” >Activated aluminaOzone resistance Activated alumina is white or reddish spherical, insoluble in water and organic solvents , but soluble in strong acid and alkali, odorless, tasteless and non-toxic. Regarding the adsorption performance of activated alumina, activated alumina is γ-a1203 with a pore volume of 300-800mm3/g and a surface area of 100-300m2/g. The pore diameter is mainly in the mesopore range. When in contact with aqueous solution, it is mainly covered by hydroxyl groups, and weak organic acids are mainly combined with it through the coordination matrix exchange mechanism.
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” >There is hygroscopicity in the air , it will not swell or crack after absorbing water, and will remain in its original shape. It is a porous and highly dispersed solid material with a large specific surface and its microporous surface has an adsorption function. As far as the molecular formula al2o3 is concerned, it seems to be a simple oxide, but when spatial factors are taken into account, it is found that it is a substance with complex morphological changes.
” >So far, not only different Among the forms, even the macrostructural properties (density, porosity, pore size distribution, specific surface area, etc.) of the same form are greatly different depending on their origin. Ozone advanced treatment includes: ozone oxidation and activated alumina adsorption, etc. We should determine the appropriate treatment process based on different water source and effluent quality requirements combined with economic factors. Ozone – biologically active alumina technology.
” >Ozone – biologically active oxidation The aluminum process is a process that combines four technologies: activated alumina physical and chemical adsorption, ozone chemical oxidation, biological oxidative degradation and ozone sterilization and disinfection. This process is generally set up after sand filtration.
” >First use ozone pre-oxidation , preliminarily oxidize and decompose organic matter and other reducing substances in the water, reducing the organic load of the biologicalActivated Aluminafilter. At the same time, ozone oxidation can break the chain and ring-opening of organic matter that is difficult to biodegrade in the water, and convert it into Simple aliphatic hydrocarbons, changing their biochemical properties.
” >The characteristics of ozone itself determine that ozonation technology has The following features: Due to its extremely strong oxidizing ability, ozone can remove substances that are difficult to remove by other water treatment processes;The reaction speed of ozonation is fast, which can reduce the volume of reaction equipment or structures; residual ozonation helps flocculation and improves the precipitation effect.
” >Ozone – biological activated alumina technology has the characteristics of strong oxidation, few by-products, and significant adsorption and degradation effects. It has received increasing attention and spread rapidly. At present, this technology has been used in more and more countries to purify polluted water sources and regenerate urban sewage for use as domestic water.
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