By: Sunny Wu（sunny7@juntaiplastic.com）
Post Date: July 27, 2021
Post Tags: What factor is important Mbbr?
What factor is important Mbbr?
The factor of filter on MBBR method
The technical key of the biofilter media way is the biological filter which has a specific gravity close to water and is easy to move freely with water under slight agitation.
Factor of Dissolved Oxygen (DO) on MBBR Media Method
By controlling the concentration of DO, different parts of the mbbr biofilm can form aerobic or anoxic zones, so that physical conditions for simultaneous nitrification and denitrification can be achieved. Theoretically speaking, when the DO mass concentration is too high, DO can penetrate into the biomedia, making it difficult to form an anoxic zone inside, and a large amount of ammonia nitrogen is oxidized to nitrate and nitrite, making the effluent TN still high. Conversely, if the DO concentration is very low, it will cause a large proportion of the anaerobic zone inside the bio media, and the biofilm medias denitrification capacity will increase (the effluent nitrate and nitrite nitrogen concentrations are very low), but due to insufficient DO supply, mbbr filter media The nitrification effect of the process decreases, which increases the ammonia nitrogen concentration of the effluent, which causes the TN of the effluent to rise, which affects the final treatment effect.
Because the mbbr biofilm carrier method mainly uses suspended biofilm carrier mbbr to achieve the final sewage treatment, the effect of DO on suspended fillers is also the key to the overall treatment results.
The factor of hydraulic retention time on MBBR process
The proper hydraulic retention time (HRT) is an important control factor to ensure the purification effect and the economics of project investment. The length of hydraulic retention time will directly affect the contact time of organic matter in water and biofilm, and then affect the adsorption and degradation efficiency of microorganisms on organic matter. Therefore, finding an economical and reasonable HRT for different sewage types is one of the key issues. In the research of phenol wastewater treatment, SH Hosseini et al. organically combined HRT and other factors to explore. Not only did they find the most important influencing factors in the experiment, but also the mutual influence and mutual restriction between the various factors during the experiment. Reflect well. Therefore, we need a more comprehensive and comprehensive consideration for the study of influencing factors.
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