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 to distribute the water at the inlet and to drain it at the outlet, and reeds are planted directly in the gravel.
The wastewater flows through the gravel, to be treated by microorganisms. The water level is managed by an adjustable pipe in an external chamber, ensuring consistent treatment. Called horizontal flow because the water moves steadily across the bed from one side to the other, these systems can operate with water just below the surface or with water freely flowing over the surface, also known as Free Water Surface (FWS) mode.
Horizontal flow reed beds offer several advantages for wastewater treatment:
Natural Treatment Process: They use natural processes to clean wastewater. Microorganisms in the gravel and the reeds help break down pollutants, making the system environmentally friendly.
Low Maintenance: These systems require minimal mechanical parts, reducing the need for complex maintenance and repair. The primary upkeep involves managing plant health and occasional gravel replacement.
Energy Efficiency: Horizontal flow reed beds operate without pumps or aerators, making them energy-efficient compared to conventional treatment systems.
Effective Pollution Removal: They effectively remove contaminants, including organic matter, nutrients, and suspended solids, improving water quality.
Sustainability: Reed beds provide habitat for wildlife and contribute to local biodiversity. They also help with stormwater management by controlling runoff and reducing the risk of flooding.
Aesthetic and Educational Value: Reed beds enhance the visual appeal of an area and offer educational opportunities for natural water treatment and environmental stewardship.
Cost-Effective: With minimal mechanical equipment and low operational costs, horizontal flow reed beds can be a cost-effective solution in the long run.
Adaptability: They can be designed to fit various scales and types of wastewater, making them versatile for different applications, from small residential systems to larger community setups.
ARM Ltd delivers reliable, sustainable wastewater management with free outline proposals and a proven track record, utilising 35 years of knowledge and experience in reedbeds.
