SELF-CLEANING INTAKE SCREENS FOR PUMP INTAKES, GRAVITY OFFTAKES, FISH DIVERSIONS
A Fish Exclusion Screen is basically a large filter (like a sieve). The filter has slot sizes from 1mm to 3mm that prevents all stages of fish life from entering through the screen.
A Fish Exclusion Screen distributes and reduces the velocity of water flow as it is delivered through gravity diversions (channels) or pumped diversions. This often reduces flows from a few metres per second down to 0.1m per second. Subsequently, the diverted flow has a significantly reduced impact on the natural waterway. This is important when protecting floating eggs, juveniles and small bodied fish that can not swim away from high velocities, often becoming entrained in a diversion flow or impinged on a screen.
As expected, if the screens exclude fish and fish eggs they will also exclude other objects in the waterway from entering the diverted flow, subsequently protecting turtles, platypus and other animals as well as isolating weed and debris. This level of debris exclusion reduces system downtime, increasing energy efficiencies and improving water quality. Surprisingly, the Fish Exclusion Screens are basically maintenance free. This is due to the unique self-cleaning features and the distributed screen area ensuring very low approach and through slot velocities.
There are proven designs of Fish Exclusion Screens that have operated in very harsh conditions for up to 20 years with minimal maintenance. Fish Screens are new to Australia but have been used and proven in other countries.
AWMA have developed innovative, field proven Fish Exclusion Screen designs for fish protection and/or debris control. International screen designs have been adapted to meet Australian conditions and performance criteria to protect the interests of both, native fish and irrigator. Solutions are designed for each application to ensure the product meets site specific performance requirements, accommodates local conditions and considers installation criteria to ensure the most effective and economical solution is provided.
AWMA's unique self-cleaning intake screens provide fine filtration with low approach velocity and even flow distribution, to ensure minimal impingement and entrapment of particles onto the screen. This promotes clean screens, uninterrupted flow, and the protection of aquatic flora and fauna.
- Internal and external cleaning brushes
- Manufactured to suit all pump and gravity offtake capacities
- Suitable for sensitive, abrasive and/or corrosive environments
- Various size screen slots depending on the application
- Durable, robust construction methods and materials
- Customisable to meet site and operational requirements
- Automation options
- Achieving a through screen slot velocity of 0.15m/s or less
- International design with 20+ years’ proven performance
- Programmable screen cleaning intervals ensuring uninterrupted flows
- Innovative cleaning system increases efficiencies
- lowers maintenance and improves water quality
- Compliance with 'best practice' standards for native fish protection as well as other aquatic life
- Low operation and maintenance costs
- stainless steel materials for long product life
- Excludes debris as well as aquatic flora and fauna
- Improved water quality results in reduced filtration maintenance
- Lower pumping costs from increased pump efficiencies
- Decrease pump system maintenance
- Custom designed to best meet client screening and operational requirements
- Install on new or retrofit to existing infrastructure
- Local customer service and support
- Designed to deliver required flow rates
- Maintaining a clean screen surface
- Customised retrieval systems reduce the need to put divers in the water
- Irrigation diversions
- Urban water intakes
- Hydro power facilities
- Debris dense waterways
- Water extraction facilities
- Cooling water intakes
- Minimum and maximum depths
- Size of screened offtake
- Flows (e.g.: Fast, slow, gravity)
- Access (e.g.: Transportation, cranage etc)
- Maintain water distribution
- Access to power
- Cultural, historical and environmental impacts
Overcome screening challenges with AWMA’s locally manufactured, supported and serviced range of proven fish exclusion and debris screens.
The team at AWMA wish you and your family a Merry Christmas, happy holiday season and successful 2019. AWMA will close COB Thursday 20th December and return Monday 7th January 2019. We thank you for your continued support and look forward to working with you again in the New Year.
MEDIA RELEASE 17th December 2018 Local manufacturing company, AWMA Water Control Solutions partnered with North Central Catchment Management Authority and NSW Department of Primary Industries to host 40 international guests, Friday and Saturday of last week. The tour was held in conjunction with the inaugural Fish Passage’2018; Australia’s First Symposium on Hydropower and Fish Management….
AWMA have had a very interesting and beneficial week attending Australia’s inaugural Fish Passage event; the ‘International Conference on River Connectivity’. An integral part of the event involved discussions regarding suitable applications for a range of Australian manufactured Fish Exclusion Screens. Pictured is an AWMA Cylindrical Fish Exclusion Screen on the AWMA stand at Fish…
DANCING SCREENS. Wondering how our Cohuna irrigation channel fish screens keep clean? Here’s a demo. Make sure your volume is up. pic.twitter.com/YJPxnB19jU — 🏞️🦎🐢 North Central CMA 🌳🐠🐦 (@northcentralcma) November 25, 2018
Happy #WorldFisheriesDay! Check out this great video by VEWH… Happy #WorldFisheriesDay! Irrigation screens are being trialed between #Gunbower & #Cohuna Channel, where native #fish are being lost from waterways down #irrigation channels. An Australian first, saving native fish! @northcentralcma @AWMA_penstocks @DELWP_Vic @EnviroVic @VR_Fish pic.twitter.com/1PbksHLyvT — VEWH (@VicEWH) November 21, 2018
An online program is now available for the International Conference on River Connectivity (Fish Passage 2018). Please note Peter Ebenwaldner will be presenting a paper on Fish Exclusion Screen Infrastructure at 130pm Tuesday 11th Dec under the heading: Fish deterrents and screen designs The full program is available here: http://fish-passage-2018.p.asnevents.com.au/days/2018-12-10 We hope to see you there.