Sewage Treatment Biofilter Tower

Biofilter tower, also known as tower biofilter, is the third generation of biofilter wastewater treatment facilities, is an aerobic biological treatment method, which has the following characteristics: hydraulic load and organic load is high, can withstand high impact load; natural ventilation, saving energy consumption of oxygen supply; covers an area of small, easy to manage, low operating costs; compared with the activated sludge method, the amount of residual sludge produced less. In recent years there has been a great improvement in the filter media, the emergence of the void rate, surface area is very large, corrosion-resistant, high-strength filter media, and give full play to the superiority of the tower biofilter.

Basic working principle

Sewage in contact with the filter media in the process, which will be assimilated by the microorganisms of organic matter, and the formation of biofilm on the surface of the filter media, biofilm is a highly concentrated microorganisms of the material, is composed of aerobic bacteria, anaerobic bacteria, parthenogenetic bacteria, fungi, protozoa, and the higher animals of the ecosystem. Biofilm first adsorbed in the water layer of organic matter, and then by the biofilm outside the aerobic bacteria will decompose it. Biofilm inside and outside the transmission of a variety of substances, the process is: oxygen in the air dissolved in the flow of water layer, and through the attached water layer to the biofilm for microbial respiration, the organic matter in the wastewater from the flow of water layer is transmitted to the attached layer of water, and then into the biofilm is degraded; microbial metabolism products along the opposite direction of discharge. Organic pollutants dissolved in water are adsorbed and oxidized through the metabolic action of microorganisms to achieve the purpose of purification. Main uses

High-concentration organic wastewater treatment, such as tanning, brewing, fish processing, soybean processing, ramie, cocoon degumming wastewater, printing, bleaching and dyeing and other wastewater, in general, high-concentration wastewater (COD1000mg/l or more), it is difficult to meet the discharge standards after the first level of treatment, according to the nature of the wastewater, the use of this equipment, with other methods of treatment, can be high-concentration wastewater treatment to meet the discharge standards. According to the nature of wastewater, the use of this equipment, together with other treatment methods, can be highly concentrated wastewater treatment to meet the discharge standards.