Products · Solids removal
Remove fine suspended solids continuously before they burden the process.
Automatic drum filters separate suspended particles from a flowing water stream through a rotating screened drum and automated cleaning cycle. They are commonly positioned early in a treatment train where rapid solids removal can reduce breakdown and downstream loading.
Product views
SUPPLIED PROJECT VISUALS
Illustrated open-channel arrangement. Final dimensions, connections and screen rating are defined for each project.
Process illustration supplied by Marine Blue; the shown 40 µm screen is an example.
Selection and design considerations
Design flow and peak flow
Expected particle size and solids load
Screen opening
Allowable head loss and water level
Backwash-water supply and pressure
Materials and water chemistry
Waste collection and drainage
Bypass, redundancy and access
System at a glance
Primary role
Continuous solids removal
Design basis
Flow, particles & solids load
Interfaces
Backwash & waste drainage
Care
Screen, nozzles & sensors
Final capacities, materials, dimensions and operating limits are confirmed against the current model datasheet and project duty point.
01
Water passes through a selected screen opening while retained solids accumulate on the screen surface. A level or pressure signal initiates rotation and backwashing so the captured material is discharged to a waste channel while filtration continues according to the selected configuration.
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The drum filter protects downstream biofilters, oxygenation equipment, disinfection processes and water clarity by controlling the solids load reaching them. It does not replace biological treatment or dissolved-organic management.
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The filter must be coordinated with upstream collection, gravity levels or pumping, waste drainage, electrical controls, backwash supply, bypass and downstream treatment. Hydraulic elevation can be as important as nominal flow capacity.
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Operating care includes screen inspection and cleaning, spray-nozzle checks, drive and bearing inspection, waste-channel cleaning, sensor verification and timely response to alarms. Maintenance access should be built into the layout.
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Early continuous solids capture can reduce manual cleaning, stabilize downstream loading and make sludge removal more deliberate. Actual separation depends on screen, particle characteristics, flow and operation.
Complete brochure information
B01
Patented design. Precision screening. Automatic cleaning.
B02
The Marine Blue Drum Filter combines our patented design, stainless-steel construction and a German-made NORD geared-motor unit to deliver controlled mechanical filtration for aquaculture and compatible water-treatment applications. A rotating microscreen separates suspended particles from flowing water, while the backwash system removes collected solids from the filtration surface.
B03
Our drum filter is developed with reference to applicable ASME mechanical engineering requirements within the agreed design scope. Attention to structural support, drum alignment, drive selection and maintenance access supports dependable operation and long-term serviceability.
B04
Every installation has a different balance of water flow, solids loading and required filtration quality. We customise the screen selection, effective filtration area, installation layout and operating configuration to suit the process, rather than assigning one flow rating to every screen size.
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Process illustration supplied by Marine Blue; the shown 40 µm screen is an example.
Incoming water carrying suspended solids enters the drum through the inlet arrangement.
Water crosses the mesh into the filtered-water channel. Retained particles remain on the inner screen surface.
The geared motor rotates the drum, lifting the loaded screen towards the wash zone.
External spray nozzles wash back through the screen, releasing retained particles into the internal collection trough.
Wash water and dislodged solids flow through the sludge outlet to the designated collection or treatment point.
Clean screen returns to the water. Rotation and wash timing follow the configured level-based or timed control sequence.
B06
Screen aperture and hydraulic capacity must be specified together.
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A micron (µm) is one thousandth of a millimetre. The screen rating describes its nominal opening size; for example, 40 µm equals 0.040 mm. A smaller opening generally retains finer particles. It is not a guaranteed removal percentage or an absolute cut-off for every particle shape.
B08
| Screen selection | Separation effect | Typical capacity effect* |
|---|---|---|
| Finer than 40 µm | Targets finer suspended particles. | Generally more resistance and/or more frequent cleaning. |
| 40 µm example | The configuration illustrated in the supplied product images. | Requires a rating based on actual screen area and water conditions. |
| Coarser than 40 µm | Allows more fine particles to pass. | Often supports higher flow for comparable conditions. |
*Qualitative comparison for comparable equipment and operating conditions. These are not published Marine Blue model capacities or a confirmed screen-option list.
B09
Throughput also depends on effective submerged screen area, mesh open area, inlet solids concentration, particle characteristics, available water-level difference, fouling and backwash effectiveness. A finer screen may need more filtration area to maintain the same design flow.
B10
Flow capacity is quoted for a stated micron rating and defined inlet conditions. Changing from 40 µm to 80 µm does not automatically double the flow.
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B12
Our patented drum-filter design follows a structured mechanical engineering approach, with applicable ASME requirements referenced in the project design basis. The specification defines the relevant standard, edition and scope for the supplied assembly. Structural rigidity, rotating alignment and access for servicing are central design considerations.
B13
We use stainless steel for the main fabrication, with material grade and surface finish selected to suit water chemistry, salinity, temperature and cleaning conditions. Material selection extends to the screen, fasteners, seals and other wetted components so the complete assembly is suited to its service environment.
B14
Screen aperture, support and sealing determine how effectively the filter separates solids without bypass. A rigid frame supports drum alignment, while accessible covers allow inspection and servicing. Project specifications should define material documentation, weld finish, dimensional checks and functional acceptance requirements.
B15
The selected NORD drive combines an electric motor and gearbox to provide the low-speed torque needed for drum rotation. Drive sizing considers drum load, operating cycle and site conditions, supporting reliable motion through the filtration and cleaning cycle.
B16
German-made drive components and spares are specified where included in the agreed supply package. Genuine NORD replacement parts are selected against the installed unit identification to support compatibility and serviceability. The final component schedule identifies the manufacturer, part number and country of origin for each specified spare.
B17
Material grade, drive model, screen specification and inspection requirements form part of the final technical scope.
B18
Marine Blue customises drum filters around the filtration duty, site arrangement and service requirements. Applications can include aquaculture recirculation, hatchery water systems, solids recovery and suitable process-water or effluent screening, following assessment of the actual water and solids.
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B20
The screen removes retained suspended solids. It is a mechanical separation stage; dissolved nutrients and contaminants require appropriate downstream treatment. Actual removal depends on the particle-size distribution and operating conditions.
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Share your design flow, solids loading, required screen rating and site layout with Marine Blue Aquaculture Solutions.
Complete product information
Explore the full technical scope, applications, advantages and project considerations.
Marine Blue manufactures, supplies, and integrates aquaculture and water-treatment equipment for project-specific applications. Equipment is selected according to required flow, solids load, oxygen demand, treatment objective, materials compatibility, energy use, service access, and system redundancy. Standard product-page structure: Overview • Working principle • Applications • Key features • Available configurations • Integration requirements • Maintenance • Enquiry CTA.
Automatic mechanical drum filtration • conceptual equipment rendering. Continuous fine-solids removal for RAS, hatchery, nursery, and water-treatment applications.
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