Biological fillers are basically used in sewage treatment in my country. With the continuous development of our environmental protection work, the use of biological fillers is also gradually advancing. Biofilm carrier-filler is the base of contact oxidation technology, which directly affects treatment effect, oxygenation function, capital investment, working cycle and cost. The three-dimensional elastic fillers and hybrid three-dimensional elastic fillers produced by our factory are the fillers that our factory has shown to be aspirational after many tests under various conditions and long-term productive work results. Because the filler can be used in different technical and water quality conditions, the thickness of the filaments and different assembly methods can be adjusted, and it is completely suitable for anaerobic, facultative, aerobic and other treatment technologies of various wastewaters. The packing is pioneered at home and abroad, and its structure and function are at the international advanced level. The biological filler is two semi-circular fishnet-shaped spheres injected with plastic. Place plastic braided wire or a small piece of sponge on the base. In the biochemical treatment of sewage, it has a full three-dimensional structure and a large specific surface area. The all-plastic structural unit filler has A/O, A2/O hydrolysis-aerobic function, little residual sludge, and long service life.

The biological contact oxidation method is mainly based on the biofilm attached to the carrier (commonly known as elastic filler), and is an efficient treatment technology for purifying organic wastewater. Now it has been widely used in the treatment of textile printing and dyeing, woolen knitting, beer food, petrochemical fertilizer wastewater, medical and domestic sewage, etc., and has achieved obvious environmental, social and economic benefits. In recent years, with the increasing demand for water supply, and surface water such as river water and lake water have been subject to large-scale organic pollution to varying degrees, contact oxidation technology is used for treatment. Over the years, this technology has been widely used by design departments due to its advantages such as high efficiency and energy saving, small footprint, impact load resistance, and convenient work management, and is deeply expected and loved by users. The three-dimensional elastic fillers and hybrid three-dimensional elastic fillers produced by our factory are the carrier fillers that our factory has shown to be aspirational through various conditions, many tests and long-term productive work results. Due to the combined structure of the filler and the selection of excellent material technology, it has the advantages of long service life, good oxygenation performance, low power consumption, fast film formation, simple film release and renewal, high load impact resistance, remarkable treatment effect and high performance. Benefit from simplicity, non-clogging, non-clustering, and low prices. When the filler is used in different technical and water quality conditions, it can adjust the thickness and density of the thread and different assembly methods, and is completely suitable for anaerobic, facultative, aerobic and other treatment technologies of various wastewaters. The packing is pioneered at home and abroad, and its structure and function are at the international advanced level.