Internal Rotary Drum Filter

The NWS Rotary drum filters are specifically designed and manufactured to cater to the needs of the aquaculture industry. The primary objectives of developing this filter series were to minimize maintenance and reduce water and energy consumption. Keeping these aims in mind, the engineers at NWS created a thoughtful construction series of drum filters that boast excellent manufacturing quality and a perfectly fitting controller. Some of the benefits of these filters include a clever drive system, robust frame construction, and an intelligent control unit that saves water and energy. Thanks to these advantages, the NWS aquaculture drum filters offer highly efficient filtration with minimal manual maintenance.

The drum filter operates on the principle of mechanical trapping of particles. The water which contains suspended solids flows through the filter screen where the particles are trapped. The control unit detects the clogging of the filter mesh and activates the backwashing process to clean the filter mesh and remove the dirt particles through the wastewater outlet.

Microscreen drum filters are considered the most advanced technology for filtering particles in aquaculture applications. The technology offers many benefits, such as the automatic removal of solid waste and a well-designed mechanical base, making it perfect for various applications.

• Specialized in the design and construction of re-circulated freshwater and saltwater fish farms.
• Specialized in upgrading and improving older or disfunction systems.
• Specialized in aquarium-like ocean pavilion.
• Has upgraded many farms; with drum filters or disc filters, oxygen systems, and ultraviolet. These farms are making after this upgrading at least the calculated production.
• Is a supplier of design and materials for farmers who will do the upgrading of installations themselves.

Reliable fine screening with maximum separation efficiency Operating reliability for membrane bioreactors Maximum COD / BOD5 reduction rates

 Applications

Drum filters are used in a wide field of applications:

• Rotary Drum file filter used in wastewater treatment plant for pressure sand filter (PSF) bypass or decrease the load on PSF.
• Wastewater or sewage Water polishing Treatment.
• Decrease the load on tertiary Treatment of ETP/STP
• Feces removal in the effluent water of fish farms
• Mechanical filtration in Recirculating Aquaculture Systems (RAS). Microscreening enhances biological nitrification and increases the effectivity of UV and ozone disinfection.
• The use of 40µ drum filters in RAS reduces the pressure from Ichthyophthirius multifile (White spot)
• Sediment removal from the inlet water. Reduces solids sedimentation in the farm and gill problems
• Reduction of Saprolegnia infection with the combination of drum filter and ozone in hatchery
• Algae removal in intake water from lakes
• Increase of dry matter content in sludge storage tanks
• Prevention of intruding of unwanted species on the farm

SUSTAINABLE FILTRATION WITHOUT CHEMICALS

The design of modern wastewater treatment plants by Nakclean Water has highlighted the benefits of primary filtration in pretreatment processes. Primary filtration helps to achieve a high level of treatment while reducing energy requirements and plant footprint, resulting in a lower overall carbon footprint. The primary filtration process also yields more valuable sludge than conventional primary sedimentation designs. Removing solids during the early stages of the treatment process improves the efficiency of downstream biological stages. The sludge produced during primary filtration contains more energy, which can be utilized in the digestion chamber.