Anglian Water takes innovative approach to reduce algae growth

Leading utility

Anglian Water is UK's leading water utility

Alton WTW

Treats up to 10 million imp gal of water a day

92,214

Properties depend on algae management

Alton water treatment works

Anglian Water provides drinking water to more than four million customers and water recycling services to almost seven million. The water company covers the largest geographical area in England and Wales. Anglian Water’s Alton Water Reservoir and treatment works treat up to 10 million Imperial gallons (42,000m3) of water a day. Water from the reservoir undergoes a robust treatment process before being delivered to customers’ taps. Algal blooms are common in large reservoirs and can cause high levels of turbidity in the raw water, put additional pressure on the treatment process and ultimately reduce the amount of water able to pass through the treatment process at a given time.

The Alton WTW supplies water to 92,214 properties in the Suffolk area, United Kingdom.

To provide additional resilience to the treatment process, the utility company began exploring facility improvement, including a partnership with LG Sonic to apply its ultrasound technology. The project team carried out the following initial research to identify the required solutions:

  1. @one Alliance Process Engineers and Anglian Water Scientists carried out extensive water quality sampling to further understand the quality of the raw water.
  2. An extensive CFD modelling carried out at the DAF plant and on-site hydraulic modelling to understand the capacity of the treatment works.
  3. The specialist contractor – @one Alliance met with LG Sonic and discussed their requirements for the treatment works.

The project team needed to establish whether LG Sonic could understand and meet the required contractual and safety standards and whether their technology and products could deliver the project successfully. Once the initial research work was completed, solutions were identified, and work was undertaken. A package of measures were identified both within the catchment and at the treatment works including the installation of 13 ultrasonic floating systems called MPC-Buoys.

Ultrasonic buoys

The MPC-Buoy systems allow the monitoring, prediction and control of algae blooms. They were delivered by LG Sonic as a flat package to the treatment works and were assembled on site before being placed in the reservoir. Once the installation was completed and before being placed in position, the devices were placed off-site to allow the panels to be loaded and to check that all signs were set and communicating with LG Sonic. Once this was completed, the systems were placed in position and started up.

Since the installation of the MPC-Buoy systems in Alton Water Reservoir and the implementation of additional control measures in the upstream catchment area, Anglian Water has started to see a reduction in algal blooms which minimises the extra pressure on the treatment works. This, in combination with modifications and improvements at the treatment works has given greater confidence in the plants ability to treat up to its full design capacity. These findings are based on only one season of installation and will be monitored closely to quantify the true benefits of installing the ultrasound technology.

Alton WTW

 

Project details

Location Suffolk, UK Industry Drinking water Client Anglian Water
  • Reduction of algae growth
  • Access to water quality data in real-time

Any questions about this case?

+31 (0) 70-7709030

Or send us

a message
Our team of microbiologists and water quality experts is here to help you with your questions.

Applied product

LG Sonic developed the MPC-Buoy specifically for larger water surfaces such as cooling reservoirs and drinking water reservoirs.

MPC-Buoy

Related case studies

Filter
New Zealand case
Auckland utility
Reduced blue-green algae counts in New Zealand

Reducing blue-green algae counts Five solar-powered algae control systems where installed in the Lower Nihotupu Dam in Auckland, New Zealand to reduce the levels of blue-green algae. The project started in December 2016, the project appeared to be of great success with the blue-green algae count over summer significantly  less than the previous year. The main objective for this project was to reduce the blue-green algae counts in the dam…

Read more
South West Water case study
South West Water
Six years of partnership with South West Water

Sustainable partnership Since 2014 South West Water, formerly Bournemouth Water, is using LG Sonic MPC-Buoy systems to monitor and control algal blooms at Longham Lakes. High algae concentrations in reservoirs used for drinking water purposes causes increased chemical dosage and blockages of filters and pipes within the water treatment plant. South West Water holds health and wellbeing of people and the environment in their core values. Environmental health is critical to…

Read more
Sellafield case study
Sellafield
Reduced blue-green algae counts

Improve water visibility After the installation of multiple LG Sonic Industrial Wet Systems in a nuclear power plant of Sellafield (UK) the water visibility in the storage ponds improved significantly. As a result of the ultrasonic systems there has been an exceptional reduction in blue-green algae and chlorophyll levels in the storage ponds. Sellafield, a nuclear fuel reprocessing and nuclear decommissioning site, handles nearly all radioactive waste generated by 15…

Read more