Reedbed and wetland specialists

ARM offers a full suite of services beyond installation, from design and construction, monitoring and maintenance, to training services, design evaluation and asset assessment

ARMPhos© is a reedbed engineering solution comprising a reactive media set within a wetland technology engineered framework. Bespoke-designed solution for each site to achieve compliance. Construction / installation and commissioning. Process guarantees where appropriate and depending on site requirements. Consultancy, advice and recommendations based on performance

Aerated Wetlands technology offers a cost-effective, sustainable solution for treating airport de-icer runoff, delivering high-quality water that meets environmental regulations. Successful installations by ARM have reduced contaminants up to 15 times more effectively than previous treatments at Heathrow, Buffalo and Edmonton airports

Vertical flow reed beds are designed to be more effective than horizontal flow systems, especially for removing ammonia. This is because they allow more oxygen to reach the wastewater, which helps break down pollutants more efficiently. Additionally, vertical flow systems can handle stronger or more concentrated wastewater better

Sludge treatment reedbeds (STRB) is one of the constructed wetland technologies that ARM uses to create natural wastewater treatment systems. STRBs are used to treat sewage and drinking water sludges. They reduce the liquid sludge volume by as much as 90%, with physical filtration removing almost 100% of the total suspended solids from the STRB effluent

Combined sewer overflows (CSOs) and stormwater runoff are pressing issues in the UK, prompting growing concern from both the public and the government. To address these challenges, ARM Ltd has introduced ARMStorm™—a nature-based solution leveraging wetland technology. These systems are designed to effectively buffer and store sludge and solids

Horizontal Flow Reed Beds (HF) are popular in the UK and known for their continuous and low-maintenance wastewater treatment. These systems involve digging a lined trench about 0.6 meters deep to prevent untreated water from leaking into the ground. The trench is filled with gravel, with larger stones at the entry and exit points. Pipes are used

Anglian Water required a tertiary treatment solution for their site at Earls Colne in Essex. The discharge consents for the site were to be tightened by the Environment Agency. The site had no power available and the cost of introducing a power-based tertiary treatment solution was prohibitive. A vertical flow reedbed system was selected

ARM Ltd installed a Forced Bed Aerated™ vertical downflow reedbed at The Raymond Priestley Centre outdoor activity centre in the Lake District National Park, increasing treatment capacity in line with increased visitor numbers and an ageing wastewater treatment system

The Sleaford Water Recycling Centre upgrade, led by Anglian Water and implemented by the @one Alliance, focused heavily on the use of reedbeds for wastewater treatment, supplied by ARM Group Ltd. Reedbeds are a sustainable, nature-based solution that utilise plants and microorganisms to clean wastewater naturally. As part of the upgrade

United Utilities commissioned a new reedbed at Chorley to handle the rising stormwater issue in the United Kingdom. ARM was contracted to design this bed, designed to reduce the needs and increase the efficiency and effectiveness of the reedbed

An aerated vertical flow reed bed has been used in a major Scottish Water infrastructure development in Cowdenbeath, which includes the construction of two new Combined Sewer Overflows which collected additional surface water from within the town

Mayfield Farm Treatment Works, commissioned in 2001, was designed to treat runoff from Heathrow Airport. The runoff is contaminated with glycols resulting from the airport's de-icing operations; however, the system was not treating wastewater as efficiently as needed and was falling under compliance levels. ARM conducted a trial to determine which system was appropriate to treat the runoff

Scottish Water's infrastructure project in Cowdenbeath, West Fife, led to the creation of two new combined sewer overflows (CSOs), producing 230,000 cubic meters of overflow annually. This overflow needs treatment before it can be safely released into the local Lochgelly Burn. Following their initial successful vertical flow reed beds installation, ARM was approached to meet this new demand

Kingstone and Madley Waste Water Treatment Works, operated by Welsh Water, was constructed in the late 1940's and has been modified on several occasions over the years to accommodate the increasing population in the area; however, it has become apparent that the system would need a refurbishment or replacement in the future

To cost-effectively and efficiently treat wastewater from their new distribution centre, Aldi contacted ARM to build a horizontal subsurface flow reedbed. This reedbed was designed to meet certain standards and permit limits as enforced by the Environment Agency; it was also planned to be installed before the distribution centre was completed, to treat wastewater generated by construction

ARM Ltd provided Scottish Water with an aerated reedbed system for one of its sites at Cowdenbeath, where a significantly increased flow of wastewater had been generated by new combined sewerage overflows (CSOs) that had been constructed as part of Scottish Water's infrastructure improvements

IKEA's Peterborough warehouse generates a significant rainfall catchment. The consequent run-off generated during rainfall events required management and treatment prior to discharge back into the environment. A spillway was constructed leading to an attenuation lagoon to provide some dynamic storage and to settle suspended solids and grit

Uffington Waste Water Treatment Works, purifying wastewater for up to 800 people, was becoming increasingly ineffective due to the increasing population and ageing system. Thames Water supplemented this with costly chemical dosing, but it was looking for a long-term solution to reduce costs and chemical usage

Hulland Ward Waste Water Treatment Works is owned and operated by Severn Trent Water, serving a population of approximately 900 people. The system was originally constructed in the 1960s comprising a conventional biological filtration system in the form of a primary settlement tank, trickling filter and humus tanks. The ageing infrastructure

ARM Ltd conducted a trial to assess the efficiency of sludge reedbeds in the treatment of ferric sludge being generated at Hanningfield WTW. Following the trial, ARM provided Essex and Suffolk Water with a full-scale reedbed system for the site, with a process area of 42,500m2 across 16 basins

The asset management strategy for Essex and Suffolk Water identified a need for a new process for sludge handling at Hanningfield Water Treatment Works (WTW). Supplied with raw water from Hanningfield Reservoir (354 Ha), Hanningfield WTW produces 150 million litres of potable water a day. As part of the water treatment process, 2-4 million litres

Need Lamerton Wastewater Treatment Works (WwTW) near Tavistock in Devon, serves 590 people and consists of a primary settlement tank, trickling filters and a humus tank. The Environment Agency (EA) tightened the phosphorous discharge consents from X mg/l to X mg/l to aid the prevention of algal growth and subsequent eutrophication of the River