We've upgraded the water distribution and aeration system in our aerated biological filters using our innovative DAV-Block technology. With no need for inspection manholes at the bottom, our filters ensure even air and water distribution, and they're virtually maintenance-free and clog-resistant compared to traditional models. They effectively remove BOD, SS, and NH3-N in a single unit. Additionally, our customizable media options, including silica sand, ceramic particles, volcanic rock, and combinations, create an ideal environment for biofilm growth.
专精特新
核心技术
Compared to Biological Aerated Filter, our system offers simple operation, unclogged performance, and low maintenance requirements.
Silica sand, ceramsite, activated carbon, gravel and their combinations can be used to create good carriers for the biofilm.
Upflow Biofilm Reactor with a compact design significantly saves on space occupation.
The Sump Flush or Sludge Flush technology enables automatic cleaning of the bottom influent channel, effectively removing accumulated impurities.
It features abundant and elevated biomass, short hydraulic retention time, and rapid biochemical reaction rate.
BOD, SS, and NH3-N can be removed efficiently in a single treatment unit.
To ensure the continuous and stable operation of the filter, Biological Aerated Filter typically use periodic backwashing. This process helps flush out accumulated pollutants and rejuvenates the media's ability to adsorb and degrade contaminants.
Aeration provides the oxygen necessary for microbial growth and the degradation of organic matter, promoting microbial metabolic activity, and enhancing the removal efficiency of pollutants in wastewater.
As water passes through the filter media, the microorganisms utilize the attachment points provided by the media to grow and carry out metabolic activities. Over time, the microbial community grows and interacts, forming a stable biofilm.
The biofilm formed on the surface of the media contains a multitude of microorganisms. Through metabolic processes, these microorganisms degrade organic matter into simpler substances such as carbon dioxide and water.
This system is suitable for secondary biological treatment and advanced treatment, effectively addressing issues of COD, BOD, and NH3-N exceeding regulatory limits in effluent. In the advanced processing phase, effluent BOD is typically reduced to below 5 mg/L, NH3-N to below 0.5 mg/L, while also efficiently capturing suspended solids.
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