Leading the Way with Mecana for Low Effluent P Concentrations
Sep 14, 2018
Although there has been a significant reduction in the amount of Phosphorus discharged to rivers from Wastewater Treatment Works in recent years (from 21,000 tonnes in 1995 to 8,000 tonnes in 2015), Phosphorus remains the main cause of water quality failures with the primary source still being wastewater discharges. Consequently, it is expected, due to the requirements of the Water Framework Directive, that over 700 Wastewater Treatment Works will require Phosphorus removal during AMP7.
The Pile Cloth Media Filter was developed by the Mecana company in Switzerland during the 1990s, with over 50,000 m2 of cloth now installed around the world. Eliquo Hydrok brought this technology to the UK in 2013 and since this time have been at the forefront of its development.
This has included, what was then, the largest ever installation at Deephams Wastewater Treatment Works (Thames Water) in 2014, treating up to 4,200 l/s, and the world’s first large-scale two-stage application at Cirencester Wastewater Treatment Works (Thames Water) in 2016 as part of the Chemical Investigation Programme trials.
This trial clearly demonstrated the capabilities of the Mecana process as, with ferric salt dosing, it proved able to achieve <0.1 mg/l Total Phosphorus discharge continuously and reliably. No other process in these nationwide trials proved capable of emulating this achievement.
Severn Trent Water realised the benefits of this technology and have committed heavily to it during AMP6 with some eleven projects deploying the Mecana process, one of these being at Goscote Wastewater Treatment Works, serving Walsall in the West Midlands.
This site requires a significant upgrading due to the imposition of a stringent new ammonia consent, a 0.2 mg/l Total Phosphorus consent (the lowest in the Severn Trent Water region during AMP6), and a tight iron consent of 2.5 mg/l.
The design team were subject to a series of challenges, including the presence of mine workings, cost reductions and the possibility of ‘out performance’ to deliver 7 ODI points worth £7m to Severn Trent Water.
A key part of this success is the adoption of a two-stage Mecana installation with iron salt dosing, which when commissioned in early 2019, will be the largest such application in the world, treating 719 l/s; Eliquo Hydrok are providing and installing the four flocculation tanks, six SF21/105 Mecana units and all the associated pipework.
Eliquo Hydrok have worked closely with the main contractor, Mott MacDonald Bentley, and Severn Trent Water throughout the project to ensure the project delivers high quality effluent at the right price.
More News and Articles
Aug 28, 2024
News
ITpipes Secures $20M to Transform Water Infrastructure Management
ITpipes announced it has secured $20 million in equity financing from Trilogy Search Partners and Miramar Equity Partners.
Known for its trusted and user-friendly platform, ITpipes …
Aug 26, 2024
News
Professor Dr.-Ing. Dietrich Stein
With deep sadness we announce the loss of our founder and partner Prof Dr Dietrich Stein at the age of 85.
Engineers around the globe are thankful for his dedication to the inventions in the fields of sewers, …
Aug 26, 2024
News
PPI Releases New Installation Guide for PE4710 Pipe
PPI’s MAB-11-2024 Covers HDPE Water Pipelines Up to 60-in. Diameter and 10,000-ft Long Pulls
Developed by the Municipal Advisory Board (MAB) – and published with the help of the members of the …
Aug 23, 2024
News
Faster wide-scale leak detection now within reach
Mass deployment of connected leak loggers is being made possible by the latest technology, writes Tony Gwynne, global leakage solutions director, Ovarro
Water companies in England and Wales are …
Aug 21, 2024
News
Kraken awakens customer service potential in water
The innovative customer service platform Kraken has made a successful transfer from energy to water. Ahead of their presentation at UKWIR’s annual conference, Portsmouth Water chief executive …
Aug 19, 2024
News
Predicting the toxicity of chemicals with AI
Researchers at Eawag and the Swiss Data Science Center have trained AI algorithms with a comprehensive ecotoxicological dataset. Now their machine learning models can predict how toxic chemicals are …
Aug 16, 2024
News
Goodbye water loss: Trenchless pipe renewal in Brazil
Pipe renewal in Brazil
How do you stop water loss through leaks in old pipe systems without major environmental impacts and restrictions? The answer: with trenchless technology, or more precisely …
Aug 14, 2024
Article
Impact of high-temperature heat storage on groundwater
In a recently launched project, the aquatic research institute Eawag is investigating how the use of borehole thermal energy storage (BTES) affects the surrounding soil, the groundwater …
Aug 12, 2024
News
Watercare completes East Coast Bays sewer link
Watercare has successfully finished the final connection on the East Coast Bays link sewer at Windsor Park in New Zealand.
Much of the East Coast Bays sewer link was installed using horizontal directional …
Aug 09, 2024
Article
Innovative water solutions for sustainable cities
Cities need to become more sustainable and use their water resources more efficiently. Managing water in local small-scale cycles is one possible solution. A new white paper by Eawag, the University …
Aug 07, 2024
Article
How digital technologies contribute to universal drinking water
Digital water technologies have an important role in ensuring universal access to safe drinking water by 2030, that is according to a new report from the World Health Organisation. …
Aug 05, 2024
News
Knowledge transfer on sustainable water infrastructure in India
India’s fast-growing cities need an efficient infrastructure for water supply and wastewater disposal. A research cooperation, is therefore supporting the development of a sustainable …
Contact
ELIQUO HYDROK LTD
Indian Queens Ind Estate, St. Columb,
TR9 6TL Cornwall
United Kingdom
Phone:
+44 1726 861 900