Internally-fed Rotary Drum Filter 

Description

The Internally-fed Rotary Drum Filter, also known as rotary micro-filtration machine, is suitable for solid-liquid separation in industrial wastewater, and can remove the dirt with suspended particles greater than 0.2mm. 

Working Principle

  1. Filtration:

The sewage flows into the filter by gravity, and a water distribution weir is set in the filter. It enters the drum from one end of the drum through guidance, and then passes through the outer surface of the drum. The long hole flows radially to the polygonal filter disc cavity. Each filter chamber is opposite to the filter screen. The pore of the filter screen is micron. When water flows out of the filter plate, the purpose of filtration is achieved. The whole process is automatic and continuous.

  1. Cleaning:

During the filtration process, with the continuous accumulation of suspended solids, part of the sludge is adsorbed on the inner side of the filter screen and gradually forms a sludge layer. With the accumulation of sludge on the filter screen, the filtration resistance of the filter cloth increases, and the water level in the inlet area of the filter increases gradually. The liquid level gauge monitors the change of the liquid level in the inlet area at any time. When the liquid level in the area reaches the cleaning setting value (i.e. high water level), the immersion multistage centrifugal pump starts to suck the filtered water into the pump and spray it to the filter plate through the nozzle. The main motor starts at the same time to drive the filter turntable to rotate and comprehensively clean the filter screen.

  1. Sludge discharge:

During the cleaning process of the filter screen, the wastewater flows into the sludge discharge tank in the drum and is automatically discharged from the filter.

Features

◆ Well-distributed water increase capacity.
◆ Simple structure, stable running, easy maintenance.
◆ Chain transmission ensures efficiency.
◆ Back-flushing nozzle equipped to prevent filter clogging.
◆ Spill-proof plates on sides avoid splashing water.

Model Selection

Note: construction material, dimensions and filter precision can be customized per requirements.

Application

  • Reclaimed water reuse - the effluent can be used for farmland irrigation, toilet flushing or industrial water reuse.
  • Tap water treatment -- remove fine suspended solids and lay a good foundation for subsequent ultraviolet disinfection and membrane treatment of tap water.
  • Industrial application -- local mechanical treatment, separation and interception of solid substances from pollution sources.

Any requirements, contact us now!

Grace

Email:grace@filtrationchina.com

Mobile/Whatsapp/WeChat：+86 17269571160