AWARD WINNING FISH FRIENDLY INTAKE SCREEN SOLUTION ONE OF THE LARGEST OF ITS KIND IN THE WORLD.
AWMA partnered New Zealand’s Rangitata Diversion Race Management Ltd to design and construct an environmentally sustainable water diversion and screening solution.
The Rangitata Diversion Race (RDR) extracts water from the New Zealand South Island’s Rangitata River 365 days of the year. The ‘race’ is a 67km long channel which diverts water from the river for irrigation, stock water and hydropower generation.
The environmentally sustainable solution designed for the RDR project features a stainless steel screening structure that is self-cleaning, fish-friendly, has a low whole of life cost, is compliant with fish screening guidelines, requires minimal maintenance and meets all client requirements.
The Self-cleaning Intake Screen Solution encompasses:
- Seven cylindrical T-Screens each measure 2.1m in diameter, 8m in length and feature an 8.75m high retrieval system.
- A flat panel screen measuring 3.5m in height and 30m in length
- A total screening area of 475m2
- A weight over 100 tonne
- Delivers approximately 30 cumecs (2600ML) per day of water from the Rangitata River
AWMA commenced preliminary project support for this opportunity in October 2016, with commissioning of the site undertaken in June 2022. The project is expected to be completed in late 2022.
AWMA's fish protection screens utilise a well proven stainless steel wedge wire screen medium that protects fish and aquatic life, whilst delivering uninterrupted flows.
The innovative self-cleaning mechanisms use internal and external brushes to clean the screen surfaces, ensuring they remain clear of debris, algae and weed.
Wedge wire is a product used globally with applications across water filtration, mineral processing, pulp and paper manufacturing, food processing, oil extraction, mining, architecture, and now, world-leading, environmentally sustainable water delivery systems.
AWMA Fish Protection Screen Solutions are guided by the USEPA 316(b) compliant design requirements and the NIWA Fish Screening: good practice guidelines for Canterbury. Innovative screening technologies are available for numerous applications.
Brush-cleaned cylinder screens are designed and manufactured by AWMA under a licensing agreement with Intake Screens, Inc.
Contact the AWMA Screen Team for further information.