The bio-filling process uses a three-dimensional hollow filler as aerobic biological carrier. The filler has a hollow structure and operates normally. The filler is suspended in water, and anaerobic bacteria grow inside the filler, which can produce denitrification to denitrify, and grow aerobic bacteria on the outside to remove organic matter. Both nitrification and denitrification processes exist in the whole treatment process.

The following editor will introduce you to the precautions for the use of biological fillers. What are the relevant contents?

Precautions for using biological fillers:

Biological fillers should not be stored in the open air for a long time. Direct ultraviolet radiation and severe cold freezing should be avoided. Otherwise, their service life will be used. The fillers should be tightened during assembly and hanging to avoid mutual winding during operation. After installation, soak in clean water. , And carry out a short-time aeration, so that the silk can be stretched to the maximum extent, and the quality of the effluent can be guaranteed.

Biological fillers selected several high-quality varieties of polyolefins and polyamides that are resistant to corrosion, temperature and aging, mixed with additives such as hydrophilic, adsorption, and thermal oxygen resistance, and adopts special wire drawing and wire wool making processes. , The thread is interspersed and fixed on the corrosion-resistant, high-strength central rope. Due to the excellent material selection and technological formula, moderate rigidity and flexibility, the thread is arranged in a three-dimensional and uniform radiation state, and the monomer of the suspended biological filler is made. In the effective area, it can be spread uniformly in three dimensions, 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 gaps. Denaturation, more and more specific surface area can be obtained during operation, and good metabolism. This feature and phenomenon is unmatched by other fillers in China.

Biological fillers are suitable for production wastewater in petroleum, chemical, textile, printing and dyeing, papermaking, pharmaceutical, brewing, slaughter, food processing and other industries, as well as biological contact oxidation tanks, biological filter towers and other reactors in the treatment of urban domestic sewage. It has a specific surface area. Large, high porosity, good oxygenation performance, fast microbial metabolism, no agglomeration, no clogging, simple operation and management, and long service life.

Compared with rigid honeycomb fillers, biological fillers have greater variability and no clogging; compared with soft fillers, the material has a long life and does not stick to the group; compared with semi-soft fillers, it has a large surface area, rapid film formation, Low cost. Therefore, the filler can be confirmed to be the fourth generation of high-efficiency and energy-saving novel fillers following various hard fillers, soft fillers and semi-soft fillers.

Suspended fillers provide a safe and comfortable environment for the mass reproduction of dominant biological flora, which enhances its ability to degrade organics in wastewater. At the same time, the rich biological flora on the carrier increases the degradation performance of refractory organics and improves the effluent. Water quality. At the same time, the biofilm sludge on the carrier has a long age, which increases the concentration of nitrifying bacteria, and the nitrification and denitrification ability is remarkable.

Through a large number of comparative tests and engineering applications, it is confirmed that the filler has a more obvious effect in decarburization and removal of ammonia and nitrogen than other products and processes. For example, in one test, we used activated sludge method and fixed bed (D25). Honeycomb packing), contact oxidation (φ150 combined packing), moving bed (φ25 multi-faceted hollow sphere), moving bed (φ25 suspended packing) five methods to simultaneously treat septic tank water, influent COD150~200mg/L, NH3-N100~ 130mg/L.. The effective pool dissolution is the same, the filling rate of the two suspended fillers is 40%, the filling rate of the fixed bed and the contact oxidation tank is 70%, and except for the activated sludge method, the other 4 methods are not used for sludge return.