KEY
- Inlet
- Inlet chamber
- Filter sock (hidden from view)
- Primary chamber
- Flow control valve
- Submersible pump
- Pipework outflow (beneath lower shelf)
- Phos-Pellet chamber
- Outlet
- Heavy duty GRP shell
- Access cover
Phos-Lite phosphate reduction system
Phosphate reduction without chemical dosing
Marsh Phos-Lite is a groundbreaking product designed to efficiently remove phosphate from wastewater.
Utilising a unique adsorption process, Phos-Lite binds phosphorus to the surface of its media, which is composed of naturally occurring elements. This ensures long-term performance across varying flow rates and influent concentrations.
Recommended for up to 35PE (population equivalent), Phos-Lite is fully scalable to meet larger demands.
Achieves phosphate levels of 0.2mg/l
The plant is engineered for maximum retention time, guaranteeing stable, low effluent phosphorus concentrations certified by PIA GmbH at 0.2mg/l.
Economic and efficient
With an electrical consumption of just 0.03 kWh/d, Phos-Lite operates at very low cost.
System flexibility
This innovative tertiary treatment solution seamlessly connects to the outlet of both new and existing treatment plants.
Enhanced effluent quality
Phos-Lite not only excels in phosphate removal but also significantly reduces other key effluent constituents.
The Marsh Nutra-Lite treats effluent to the following standards:
BOD: 4mg/ltr
Suspended Solids: 11mg/ltr
Ammonia: 0.5mg/ltr
When the Marsh Nutra-Lite and Marsh Phos-Lite are combined, the effluent quality is further improved to:
BOD: 1.62mg/ltr
Suspended Solids: 4.3mg/ltr
Ammonia: 0.38mg/ltr
PTot: 0.26mg/ltr
TNb: 10.5mg/ltr
Test results achieved when the Marsh Ensign:EL and Marsh Phos-Lite are combined is as follows:
COD | 56.1% | 23 mg/ltr
BOD | 59.5% | 4 mg/ltr
TNb | 5.5% | 29.6 mg/ltr
NH4n | 24% | 0.4 mg/ltr
Ptot | 95.9% | 0.2 mg/ltr
SS | 61.1% | 4 mg/ltr
Specifications
| Model | PE | Ø Dia | Height | Inlet invert | Inlet dia Ø | Outlet invert | Outlet dia Ø |
|---|---|---|---|---|---|---|---|
| PL4 | 4PE | 1200 | 1865 | 665* | 110 | 1085 | 110 |
| PL6 | 6PE | 1200 | 1865 | 665* | 110 | 1085 | 110 |
| PL8 | 8PE | 1200 | 2139 | 665* | 110 | 1085 | 110 |
| PL10 | 10PE | 1200 | 2139 | 665* | 110 | 1085 | 110 |
| PL12 | 12PE | 1500 | 2284 | 715* | 110 | 1085 | 110 |
| PL16 | 16PE | 1500 | 2284 | 715* | 110 | 1085 | 110 |
| PL20 | 20PE | 1500 | 2284 | 715* | 110 | 1085 | 110 |
| PL25 | 25PE | 1500 | 2284 | 715* | 160 | 1085 | 160 |
* Inlet invert subject to outlet invert on preceding sewage treatment plant
Operating principle
Features and benefits
Enhanced effluent quality
Phos-Lite not only excels in phosphate removal but also significantly reduces other key effluent constituents
- COD reduction by 56.1%
- BOD reduction by 59.5%
- Suspended Solids reduction by 61.1%
- Total phosphate (Ptot) efficiency at 95.9%, achieving 0.2mg/l
Long-term performance
Designed to retain up to 8.5kg of phosphorus over five years for a 6PE domestic plant (British Water Flows and Loads 4), Phos-Lite offers reliable performance. After this period, media performance can be reassessed and replaced if necessary, representing approximately 50% of the tested capacity.
Natural, non-dosing solution
The plant uses Phos-Lite pellets, a natural mineral media, to reduce phosphate levels, simplifying operations and reducing the environmental impact of chemical use.
Cost-effective and low maintenance
The non-dosing approach minimises the need for frequent maintenance and chemical adjustments, leading to cost savings over the plant’s lifetime.
Ease of integration
The plant is designed for seamless integration into existing systems, making it versatile for new installations and retrofits. Builders’ merchants will find this product a valuable addition to their offerings, catering to the growing demand for environmentally responsible wastewater treatment solutions.
Enhanced compliance
By achieving phosphate levels of 0.2mg/l, the plant ensures compliance with the tightest environmental standards, allowing water companies to meet regulatory obligations.
Material strength and fire safety
Marsh Industries’ GRP material successfully meets the requirements of EN ISO 11925-2:2010 standards and is tested for direct flame impingement. All units come with a 25-year structural guarantee.