With the rapid economic development and the acceleration of the process of urban-rural integration, farmers’ attention and requirements for the quality of the living environment have also become higher and higher with the improvement of living standards. The current situation of environmental pollution caused by rural domestic sewage is becoming more and more serious. The treatment of domestic sewage in rural areas is currently a concern.
Characteristics of rural domestic sewage:
Bathing, kitchen and toilet flushing are the main components of rural domestic sewage. The water quality is relatively simple, the water discharge is irregular, and the organic content is high, but the biochemical treatment effect is good, and the content of harmful substances such as heavy metals is low.
Rural domestic sewage treatment, a common process: biological contact oxidation method, biological contact oxidation method is a high-efficiency water treatment process that mainly uses biofilm attached to a carrier (commonly known as filler) to purify organic wastewater. The filler is recommended to choose-combined filler.
Rural Domestic Sewage Treatment-Specification and Application of Combined Packing
Combined filler is developed on the basis of soft filler and semi-soft filler, which has the advantages of both. Its structure is to change the plastic disc press buckle into a double-circle large plastic ring, press the aldehyde fiber or polyester yarn on the ring of the ring, so that the fiber bundle is evenly distributed; the inner ring is made of snowflake-shaped plastic branches, which can be used for film , It can effectively cut air bubbles and improve the transfer rate and utilization of oxygen. The water and gas biofilm can be fully exchanged, and the organic matter in the water can be treated efficiently.
The diameter of the combined packing unit is Φ150mm, 160mm, 180mm, 200mm; the spacing has two specifications: 80mm and 100mm. The center rope has two types: plastic rope and fiber rope. It has high heat dissipation performance, low resistance, good water and air distribution performance, easy to grow film, and has the effect of cutting air bubbles.
Combined fillers are widely used in various sewage and wastewater treatments, and are suitable for aerobic treatment of industrial wastewater and domestic sewage such as printing and dyeing, smelting and dyeing, wool spinning, carpet, cotton spinning, silk, pharmaceutical, cyanide, petrochemical, etc.