Marsh Nutra Lite Specification for Planning Submission - Nutrient Neutrality
Project Overview
Site Location: [Insert address/postcode]
Application Type: [New Build / Replacement System / Change of Use]
Development Size: [Number of dwellings / PE]
Proposed Wastewater Treatment: Marsh Nutra‑Lite SBR Sewage Treatment Plant with optional Phos‑Lite tertiary unit
System Description
Manufacturer: Marsh Industries Ltd (UK)
Model Proposed: Marsh Nutra‑Lite NL[6/10/16/25] (Serving [X] Population Equivalent)
System Type:
Sequential Batch Reactor (SBR) domestic wastewater treatment plant
Designed in accordance with BS EN 12566-3:2005+A2:2013
Independently tested at PIA GmbH for 50 weeks continuous performance
Effluent Quality (Typical Results)
Without Tertiary Treatment
| Parameter | Performance | Reduction |
|---|---|---|
| BOD | ~4 mg/L | 98.7% |
| COD | ~33 mg/L | 95.8% |
| TSS | ~11 mg/L | 97.1% |
| Ammonia | ~0.5 mg/L | 99.1% |
| TNb | ~11.1 mg/L | 83.9% |
With Optional Phos‑Lite Module
| Parameter | Performance |
|---|---|
| BOD | ~1.62 mg/L |
| Suspended Solids | ~4.3 mg/L |
| Ammonia | ~0.38 mg/L |
| Total Nitrogen | ~10.5 mg/L |
| Phosphate | ~0.26 mg/L |
Effluent complies with Environment Agency General Binding Rules and meets typical discharge consent limits for sensitive sites, including SSSI catchments and nutrient neutrality zones.
Design & Construction
Material: Glass Reinforced Plastic (GRP), EN ISO 11925-2 fire tested
Tank Warranty: 25 years
Air Blower: External with alarm and telemetry options
Access: Lockable manway; desludging every 12–36 months (site dependent)
Sludge Valve: Self-cleaning, non-mechanical
Energy & Controls
Power Supply: 230V single-phase
Energy Saving Mode: Adjusts cycles based on low loading
Optional: GSM telemetry or Wi-Fi remote monitoring/alarm
Installation Details
Installation Method: Below-ground; backfill with concrete or granular fill (site dependent)
Inlet Invert: ~550–600 mm
Outlet: Gravity discharge; pumped option available if required
Maintenance: Annual servicing by accredited engineers
Discharge Consent & Compliance
Discharge to [soakaway / watercourse] under General Binding Rules
If phosphate reduction is required, the Phos‑Lite module will be included to reduce P_tot below 0.3 mg/L, supporting nutrient neutrality requirements
Supporting Documents
EN12566-3 Certification Report
Marsh Industries Technical Datasheet
Site Drainage Layout Plan (attached)
Maintenance Plan
Conclusion
This system is an environmentally robust, tested, and certified sewage treatment solution designed for off-mains wastewater sites. Its advanced SBR process and optional tertiary phosphate removal provide long-term compliance and sustainability.