About the Whitetip Shark

The Whitetip Shark is a fierce but slow-moving shark, notable for its long, rounded fins which feature an iconic white tip. Hydro-Dyne’s family of Whitetip Shark Washing Compactors thoroughly wash and compact screenings to produce the clean and compact white screening plugs it’s known for by efficiently returning organics to the channel.

  • Designed to collect, condition, dewater and compact screenings from virtually any existing screen
  • Multiple models and options are available to suit individual applications
  • Returns most organics and wash water to channel
  • Reduces disposal weight and volume
  • Bagging units to reduce odor available
  • Screenings meet strict landfill requirements
  • Shafted and shaftless flights available
  • All stainless steel construction
  • Standard screw diameters: 6”, 8”, 10”, 12” ,16” and 20”

Custom-Designed Screenings Handling Systems

Washing CompactorAn effective screenings handling system is a critical component to every water or wastewater treatment plant. In wastewater applications screening handling systems are particularly important. The characteristics of wastewater and method for which wastewater gets to a treatment plant varies from location to location.

The team at Hydro-Dyne Engineering works to gather as much information as possible during the design stage to understand if the plant is gravity fed, pumped or a combination to ensure that screenings handling systems are properly designed to meet expectations. Hydro-Dyne’s engineers better understand these factors through discussions with customers, system designers, plant operators and by utilizing our unique Hammerhead Onsite Screen Sizing (H.O.S.S.) system. Our experience has shown that gravity fed plants that have little-to-no pumping tend to be more likely to rWashing Compactorequire greater washing ability. In these cases, the organic material content of the influent does not have the opportunity to be broken down as much on its pathway to the plant and the organic content of the screenings tends to be increased. Because every plant has unique characteristics, Hydro-Dyne is pleased to offer a family of compactors to best suit the needs of a variety of processes in the most efficient and effective way possible.

Whitetip Shark Family of Compactors

Hydro-Dyne’s family of Whitetip Shark Washing Compactors are custom-designed for every application, taking into account the type of flow and solids collected. Multiple models are available to ensure organic material is returned to the treatment plant’s process and inorganic materials are separated, cleaned and dewatered in the most effective and efficient way possible. Stainless steel construction provides an enduring solution to exceed ever increasing disposal requirements.

Whitetip Shark
Washing Compactor

The Whitetip Shark Washing Compactor features screenings washing, compaction and dewatering zones. The compactor’s washing trough houses a screw auger and spray wash system to rinse and agitate screened material which efficiently separates organic and inorganic material. Unlike other compactors, Hydro-Dyne’s spray wash nozzles are individually set at different angles to maximize the rinse cycle and recessed into the side wall of the washing trough to minimize ragging and blockage. Stainless steel anti-rotation bars improve compaction and significantly increase equipment lifespan.

  • Washing
  • Compaction
  • Dewatering

Whitetip Shark
with Additional Wash Cycle

The Whitetip Shark Washing Compactor with additional wash cycle adds a reversing function to the auger and timers so that the screened material is aggressively agitated during a longer wash cycle. Organic material is further broken down and washed back into the system through the drain.

  • Aggressive Washing Cycle
  • Compaction
  • Dewatering

Whitetip Shark
with Wash Module

For treatment plants that are fed by a gravity system or utilize high capture fine screens, the Whitetip Shark Washing Compactor with wash module is recommended. This model reduces the total weight of discharged materials by an average of 80% through the addition of multiple systems, including deluge and washing module zones. The deluge zone significantly improves the separation of organic and inorganic materials, and washing module and compression zones thoroughly rinse and compact captured screenings. The wash module ensures cleaner inorganics will be discharged while keeping organics in the wastewater stream, and can be retrofitted in the field after original equipment is installed.

  • Up to 80% reduction in solids output weight
  • Deluge zone
  • Wash module zone
  • Compaction
  • Dewatering

Theory of Operation

The basic operation of a typical washing screw compactor is fairly simple. Material off-loaded from screening equipment is fed into the compactor where an auger moves the material forward as it is washed by rinse bars in the loading area of the unit.  From here the material continues to be pushed forward by the auger into the compression zone where screenings are both dewatered and compressed.  The dewatered and compressed screenings then enter the pipe that moves it to the waste bin.  Screenings that have been washed and compacted reduce the overall volume and disposal costs. Inorganic material is captured and sent to the landfill while organic material is returned to the plant where it is needed for downstream processes.

Discharge Options

  • Dual Bearing: Dewatering
  • Reduction Flange: Dewatering and some compaction
  • Hinged Gate: Dewatering and compaction
  • Press Elbow: Maximum dewater and compaction plus elevation

Screening Collection Options

  • Screenings collection bagging system
  • Self-leveling bins
  • Stainless steel discharge chute
  • Lay flat hose or flexible pipe

Optional Equipment

  • Basic rinsing to thorough washing
  • Integrated models located within screens
  • External models fed via sluice or conveyor
  • Trough types: perforated, slotted, wedgewire
  • Shafted or shaftless flight
  • Electric or hydraulic drive
  • Cold weather/freeze protection

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