PWL CenterFlow - Drum Screen Systems

The internally loaded rotary screen is used to separate solids and liquids from process and waste water and is suitable for a wide range of tasks due to the large number of different variants. The PWL CenterFlow CFS can be easily adapted to individual requirements with perforated screens, slotted screens or drums covered with stainless steel mesh. It is insensitive to abrasive media and high solid loads. The core of the rotary screen is the robust screen drum, in which the particles to be separated are collected and gently drained and discharged from the system. The inflowing waste water is homogenized in the inlet chamber and the flow rate is reduced. Due to the possibility of configuration, you can focus the task of the bowl either on the rapid discharge of the solids or alternatively on the slower passage through the bowl if the retained solids are to be additionally washed or well drained. The CFS drum screen features a throughput capacity of up to 3,000 m³/h and has proven itself in many applications with high solids loads. Like all PWL drum screens, it is designed for reliable 24-hour continuous operation in a wide variety of industrial sectors, such as the paper and pulp industry, the food industry or in recycling plants, but also in municipal sewage treatment plants. The CFS drum screen is characterized by a throughput of up to 3,000 m³/h and has proven itself in many applications with high solids loads. Like all PWL drum screens, it is designed for reliable 24-hour continuous operation in a wide variety of industrial sectors, such as the paper and pulp industry, the food industry or in recycling plants, but also in municipal sewage treatment plants. The CFS drum screen is characterized by a throughput of up to 3,000 m³/h and has proven itself in many applications with high solids loads. Like all PWL drum screens, it is designed for reliable 24-hour continuous operation in a wide variety of industrial sectors, such as the paper and pulp industry, the food industry or in recycling plants, but also in municipal sewage treatment plants.

Our PWL TanFlow TFS drum screen, which is fed from the outside, is always used when larger flows of liquids have to be separated from solids - whether in industrial or municipal applications . Areas of application include slaughterhouses, the wood and beverage industry and waste disposal companies. The rotary screen, which is also suitable for oily and greasy media, is only supplied with slotted screen drums (gap widths 0.25 mm to 2.5 mm) and impresses above all with its robust and compact design, which also allows use in tight spaces , as well as its hydraulic performance . The maximum throughput is around 1,500 m³/h. The TanFlow TFS is also optionally available with an integrated spiral press.

The process water or waste water reaches the surface of the screening drum through the inlet chamber.

First, the water flows through the drum from the outside to the inside.

As a result , solids that are larger than the selected gap width collect on the surface. The even rotation of the drum transports the accumulated solids to the scraper, which ensures that the solids are separated gently. After separation, the cleaned liquid flows through the drum from the inside to the outside and flows out through the outlet nozzle.

Very often, our drum screens are also used to treat process water, i.e. for water recycling. The PWL MDF can also be used, for example, to separate microplastics in centrate water filtration. With the internally loaded PWL MDF drum filter, PWL Anlagentechnik supplies a drum screen that is also able to work as a screen filtration system. Our drum filter combines high separation efficiency with low operating costs in continuous operation.

The MDF micro-rotary filter with mesh sizes between 25 and 2,000 µm is used in many water recycling and process water circuits. Flow through the inlet connection on the rotary filter the waste water into the filter drum, which consists of a steel construction covered with stainless steel wire.

The solids settle on the filter fabric and are transported upwards by the rotational movement. The filtered particles are then blown down using a blow-off register. The falling solids are collected in the discharge conveyor and
removed from the filter pan. The materials retained in the rotation system can also often be recovered from the MDF inserts and returned to production as accepts.

Based on our extensive and application-related know-how, we develop tailor-made solutions for our customers - precisely tailored to the individual needs and local conditions on site. Each screening plant is tailored to the respective application and individually configured by us. We always attach particular importance to the possible further treatment and recycling of accepted materials.

If the solids in process water or waste water have to be separated from the liquid, our internally and externally fed rotary screens have proven themselves countless times in use.

Among other things, the TanFlow TFS drum screen was successfully used to treat winegrowing waste water and waste water treatment in a large bakery. With its separating capacity, our MDF drum filter enables efficient lint and hair separation in industrial laundries and, thanks to reduced water consumption, ensures economical operation and high quality in terms of cleanliness of the washed laundry. Our internally loaded CenterFlow rotary screen is used in Successfully used in connection with our PWL screw press in the field of plastics recycling or slaughterhouses , among other things