Phosphorus Removal from Water
Gel Flocculant for Nutrient Removal
Supporting phosphorus and nutrient reduction through particle capture

We provide water treatment and phosphorus removal solutions to reduce nutrient overloading and prevent algal blooms in construction and industrial runoff.
Nutrients such as phosphorus often attach to fine soil particles. When these particles enter watercourses, they drive algal blooms, oxygen depletion and ecological harm.
Clearflow’s Gel Flocculant accelerates the capture of fine sediments and their associated nutrients, providing a practical treatment step to support compliance with tightening discharge consents in sensitive catchments.
We welcome further opportunities for pilot programmes in partnership with government agencies and academia in the UK.
- Construction and catchment storm water treatment
- Road run-off management
- Water treatment
- Mining
Key Benefits
Leading the way in nutrient pollution control
Particle bound nutrient removal
Gel Flocculant captures suspended particles that carry phosphorus and other nutrients
Regulator accepted
Gel Flocculant has been deployed on sensitive sites with strict discharge consents, where flocculation is an approved pathway for reducing particle bound phosphorus
Performance evidence
Reductions in phosphorus, COD and turbidity have been demonstrated in real-world case studies, including West Cumbria (UK) and Innisfil (Canada), supporting regulator acceptance.
Low cost, low carbon
Passive or pumped dosing avoids the high energy and chemical footprint of tank based treatments
Process-led approach
Our Settlement Testing part of the service confirms site chemistry, optimum formulation, dose and installation
Scalable technology
We support small construction discharges to road run-off and large scale mining or industrial applications
Technical specification
Form | Dehydrated Gel Flocculant blocks, with formulations designed to target fine particulates for rapid settlement. |
Mechanism | Nutrients such as phosphorus are often particle bound. By flocculating and settling these particles, overall nutrient load is reduced. |
Performance evidence | Case studies demonstrate phosphorus reductions from 0.1 mg/l to 0.02 mg/l (West Cumbria, UK) and average phosphorus reductions of 90% in stormwater discharges (Innisfil, Canada), alongside reductions in TSS and COD. |
Deployment options | Passive flow systems for drains, channels and road run-off, or pumped deployment using GFR for higher flow or higher risk applications. |
Whole life cost and carbon | Lower footprint and operating cost compared with chemical dosing or settlement tanks, with carbon benefits from simple, passive operation. |
Installation Guides
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Applications
Construction site runoff management
Surface water management is a complex, technical challenge but our innovative solutions help to reduce environmental and non-compliance risks.
Find out moreReservoir water quality
Our tried and tested benthic aeration technologies offer cost-effective destratification solutions, improving reservoir efficiency and water quality while reducing lifespan costs and carbon footprint.
Find out moreWater treatment
We work with market-leading technology partners to deliver cost-effective solutions for the treatment of water that also minimises carbon impact.
Find out moreGroundworks
We have a strong track record in supporting groundworkers with products and solutions that balance stakeholder interests with time and budget constraints.
Find out moreMining & legacy mines
Using Clearflow Gel Flocculant™, we offer an innovative approach to safeguard freshwater resources from the impact of both active and historical mining sites.
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