The Dusky Shark is renowned for eating just about anything, including garbage. And like this shark, our Dusky Shark Septage Receiving Equipment is highly capable of screening nearly any material out of a wastewater flow, including septage and grease trap material that other equipment cannot manage. The Dusky Shark Septage Receiving Equipment is highly efficient, reliable and easy to install.
- High capacity, heavy duty continuous band screen in a tank
- Effortlessly screens high TSS and FOG flows
- Fully enclosed for safety, aesthetics and odor control
- All maintenance above tank
- All stainless steel fabrication including flanged tank
- Through Flow and Center Flow models available
- Sophisticated monitoring and billing control available
- No rotating brushes
- Dedicated Whitetip Shark Washing Compactor
Septage Receiving Equipment Models
Through Flow Dusky Shark
- Extremely durable design is ideal for the most abusive environments
- Continuous belt design eliminates potential for jamming and removes large solids
- Easily captures and removes rags
Center Flow Dusky Shark
- Highest Screening Capture Ratio (93.25% for 2mm and 84% for 6mm) with no screen bypass or carry-over
- Excellent for sensitive process protection
- Compact footprint with elongated drum and integral compactor
Features & Benefits
Select the model and rollover each feature to interact.
Center Flow Dusky Shark Septage Receiving Station
*National Screen Evaluation Facility Inlet Screen Evaluation Comparative Report by UK Water Industry Research including 45 different screens by leading manufacturers.
Through Flows Dusky Shark Septage Receiving Station
Screen Grid Options
We offer opening options that include stainless steel links and perforated panels as well as UHMWPE perforated panels. Our Dusky Shark Septage Receiving Equipment can accommodate low-to-high flow rates and features opening sizes from 1mm to 75mm.
Stainless Steel Laced Links
Rectangular Openings from 1-75mm
The Laced Link-style grid is ideally suited for water and wastewater applications where fine screening is required with low headlosses.
- Able to withstand extremely harsh environments
- Strongest grid available
- Excellent unloading of screenings
- Highest open area percentage/very efficient
- Easily handles large flows
- Extremely high open area percentages resulting in lower grid velocities
- Smaller footprint
- Wide range of opening sizes
- Versatile and proven
- Excellent in the screening of FOG and stringy material
- Less efficient capture of hair and fibrous material
- Lower screening capture ratio
UHMWPE & Stainless Steel Perforated Panels
Round Openings from 1-9mm
Our perforated panel grid is excellent for a variety of municipal water and wastewater applications where fine screening is required to protect sensitive process equipment, such as Membrane Protection (MBR’s).
- Highest screening capture ratio
- Exceptional sensitive process and membrane protection (MBR’s) in wastewater applications
- Patented grid design maintains strength and openings tolerances for life
- Effectively removes hairs/fibrous material
- Greater water pressure/volume requirements
- Significant collection of fecal and organic matter
- Higher headlosses
Theory of Operation
Flow passes into the screen and is diverted through the grid on each side of the unit. Solids larger than the openings in the screen’s grid are collected and begin to form a mat which is removed undisturbed from the flow resulting in extremely high solids capture. Screening capture ratios increase as the solids form a thicker mat. Level sensing devices can be connected to variable speed drives to automatically compensate for high solids loading during peak flows or low flow conditions by proportionally speeding or slowing the grid travel speed. This increases the capacity of the equipment when needed and reduces wear, thereby extending the life of the equipment.
Solids are transported to the top of the screen as flow is constantly presented a clean grid surface. As screenings traverse up and over the top of the screen they are discharged into screening handling equipment. Drained wash water is discharged upstream – eliminating bypass.
Minimal friction is achieved through the use of Ultra High Molecular Weight Poly-Ethylene (UHMWPE) and stainless steel wear surfaces. Machined Delrin spacers precisely separate elements, eliminating metal-on-metal wear and extending the life of the grid. Wide stainless steel tracks ensure years of trouble-free operation.
The stainless steel foot section and wear tracks prevent solids bypass. Unlike traditional screens, all solids with diameters larger than screen opening sizes cannot pass under, through or over the screen. Even in the event debris is not unloaded by spray wash, it always remains on the “dirty” side of the screen.
Flow passes through the screen while solids are intercepted and collected by the continuously moving grid. Solids larger than the openings in the screen’s grid are collected and form a mat, which is removed undisturbed from the flow resulting in extremely high solids capture and easy unloading.
A low profile bottom shoe and polypropylene brush seals the grid, preventing solids from bypassing under the screen. Flow is constantly presented a clean grid surface as solids are transported to the top of the screen. Screenings are discharged into screening handling equipment.
Minimal friction is achieved through the use of Ultra High Molecular Weight Poly-Ethylene (UHMWPE) and stainless steel wear surfaces. Machined Delrin spacers precisely separate elements, eliminating metal-on-metal wear, reducing power and maintenance requirements and ultimately extending the life of the grid. Wide stainless steel tracks ensure years of trouble-free operation. Stainless steel grid elements provide superior strength while reducing area and headlosses. Heavy gauge stainless steel links are not susceptible to breaking and damaging downstream equipment.
Level sensing devices can be connected to variable speed drives to automatically compensate for high solids loading during peak flows or low flow conditions by proportionally speeding or slowing the grid travel speed. This increases the capacity of the equipment when needed and reduces wear, thereby extending the life of the equipment.
Our patented sealing system holds extremely tight tolerances between panels and grid to frame, eliminating the bypass of solids and intrusion of abrasive grit. We can ensure a tight tolerance down to 0.5mm in all locations on the screen, even those areas that other screens leave vulnerable.
- Guide Links create a continuous chain around edge of selected grid
- Formed stainless steel plate creates a labyrinth seal with Guide Link slot
- Fully adjustable and removable for inspection
- Continuously sealed for entire submerged grid path
- Slotted stainless steel hook links separated by Delrin spacers
- Links support panels every 3” (75mm)
- Panels are closely held against spacers
- No neoprene to erode or fall off
- No hinge to loosen or stretch
- Simple in-situ replacement
Patented direct drives efficiently power the screen. Stainless steel sprockets support and pull the black UHMWPE Guide Links, resulting in little-to-no friction and long wear. Most importantly, no part of the drive touches the grid. Therefore, a bent grid element will not be compounded into a disabled screen.
Resilience to weather, wear, and lack of maintenance make this model an excellent choice for virtually every installation. Through sensible design and material selection this headworks screen is very efficient, utilizing as low as a 0.5 hp (0.38 kW) electric motor. Screens will be wired to suit applications phase and voltage supplies. Chain guards are standard on all electrical models. Explosion proof motors are optional.
The Dusky Shark Septage Receiving Station with hydraulic drive incorporates all the benefits of the electric drive with the added capability to be operated submerged. This is a useful option when flooding can occur and reliability is key.
- Solid stainless steel sprockets and drive shaft
- Lifts and supports grid
- Minimum four lugs engaged per sprocket
- Adjusts to tension grid to extend wear life of screen
- Grid does not touch drive or unloading mechanism
- Low friction guide links
- Fractional hp and kW requirements
- Only two grease fittings per screen
- Direct drive uses no chains or sprockets
Our highly effective spray wash provides a superior method of cleaning the grid while prohibiting carryover. Spray nozzles efficiently direct pressurized water over the width of the grid to positively remove screenings and prevent carryover. This method of discharge requires a relatively clean source of water to avoid clogging. Conveyance and compaction may be recommended depending on disposal requirements.
Screenings Handling Equipment
An effective screenings handling system is a critical component to every water or wastewater treatment plant. Hydro-Dyne’s turn-key screenings handling solutions are manufactured at the highest level of quality and designed to accept, wash, dewater, compact and/or transport collected screenings. In wastewater applications, screening handling systems are particularly important as they are designed to return organic material to the channel and produce clean, dry and inorganic product that can be properly disposed of in either a container or bagging unit.
Screening Handling At-A-Glance
- Collect and convey screenings for disposal
- Returns organics and wash water to channel
- Screenings meet strict landfill requirements
- Compactors reduce disposal weight and volume
- Bagging units can contain odor
- Agitation can be introduced for more thorough cleaning
- Can be designed as integral and external models
- Shafted and shaftless screw flights
Thresher Shark Washing Machine
- Extremely thorough washing removes virtually all fecal material and produces “clean” and compacted screenings for disposal
- High capture of inorganic solids reduces plant operating costs and improves sludge quality
- Organic material returned to plant for biologic treatment
Thank you for your interest in our company.
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