The anaerobic tank is a structure without aeration and high concentration of pollutants. Because the dissolved oxygen is consumed by decomposition, there is almost no dissolved oxygen in the water, and it is a structure suitable for anaerobic microbial activities to treat pollutants in the water.
Anaerobic tank filler is to use the role of anaerobic bacteria to remove organic matter in wastewater. Commonly used biological fillers are: elastic three-dimensional fillers.
The elastic three-dimensional filler is selected from polyolefins and polyamides with high-quality varieties of corrosion resistance, temperature resistance, and aging resistance. It is mixed with additives such as hydrophilicity, adsorption, and thermal oxygen resistance, and special wire drawing is used to make wool. Process, the thread is inserted and fixed on the corrosion-resistant, high-strength central rope.
The elastic three-dimensional filler hanging in the effective area of the anaerobic tank can be evenly spread in three dimensions and all directions, so that air, water, and biofilm can be fully mixed and exchanged. The biofilm can not only uniformly implant on each thread, but also Maintain good activity and gap variability, and can obtain increasingly larger specific surface area during operation, and can carry out good metabolism.
The principle and function of anaerobic biochemical treatment and facultative biochemical treatment are the same. The difference between anaerobic biochemical treatment and facultative biochemical treatment is that anaerobic microorganisms do not need any oxygen in the process of growth and degradation of organic substances, and anaerobic microorganisms can adapt to wastewater with higher COD concentration (4000- 10000mg/L). The disadvantage of anaerobic biochemical treatment is that the biochemical treatment time is very long, and the residence time of wastewater in the anaerobic biochemical tank generally needs more than 40 hours.
What is the role of anaerobic tank packing? In short, the elastic filler of anaerobic tank has the advantages of fast film formation, easy removal of the film, good biofilm growth and renewal, resistance to high load impact, high CODcr removal rate, good treatment effect, good oxygenation performance, and multi-level collision of bubbles , Intensive cutting can greatly improve the utilization of oxygen.