External Feeding Drum Screen

The external water inlet drum screen is a highly efficient solid-liquid separation equipment, which is widely used in sewage treatment. Its working principle is: sewage enters the water inlet tank from the water inlet pipe, flows to the screen surface outside the drum, and the water flows through the screen surface into the drum, and finally discharged from the bottom. In this process, the suspended matter in the water is trapped on the screen surface of the drum, and as the drum rotates, it is sent to the discharge end and removed by the discharge mechanism. At the same time, the backwash system equipped with the equipment regularly cleans the screen surface to prevent blockage.

Good Filtration Performance
The stainless steel filter of the external water inlet drum screen has a filtration accuracy of up to 10-50 microns. When treating sewage with a suspended solids concentration of 100 mg/L, the suspended solids concentration of the effluent can be stably controlled below 5 mg/L, and the removal rate is more than 95%.

Corrosion Resistance
The main body and key components of the external water inlet drum screen are made of 316L stainless steel, which has excellent corrosion resistance and a service life of more than 10 years in water with a chlorine content of 3000ppm, while carbon steel can usually only last for 5 years in the same environment.

Automatic Backwashing
The external water inlet drum screen is equipped with an automatic backwashing system, which monitors water level changes in real time through sensors and automatically starts cleaning. Each backwash takes only 30 seconds and the single water consumption is less than 10 liters. Compared with manual cleaning equipment, it can save about 1,500 yuan in labor costs per month and reduce annual energy consumption by about 20%.

Municipal Sewage Treatment
The external water inlet drum screen is used in the pretreatment stage of urban domestic sewage treatment plants to effectively remove suspended matter and impurities in the water and improve the operating efficiency of subsequent treatment equipment.

Aquaculture
The external water inlet drum screen is used in aquaculture to filter circulating water, remove particulate matter and feed residues in the water body, and keep the water clean.

Drinking Water Treatment
The external water inlet drum screen is used in the raw water treatment stage of the water plant to remove large particles and suspended matter in the water, providing guarantee for subsequent fine treatment.

Rainwater And River Management
The external water inlet drum screen is used for rainwater interception and river water quality improvement, filtering solid garbage, leaves and other debris in the water, which helps to maintain the ecological balance of the water body.

Food Processing Wastewater
The external water inlet drum screen is suitable for the pretreatment of wastewater from food processing plants, which can efficiently separate residues and organic matter and reduce the pressure of subsequent treatment.

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