Utra-Lite SBR advanced sewage treatment plant

The natural solution for advanced sewage treatment and nitrate removal

Marsh Industries proudly presents the Marsh Nutra-Lite, an advanced Sequential Batch Reactor (SBR) sewage treatment plant designed to enhance effluent quality for off-mains wastewater systems and significantly reduce biological nitrates.

The Nutra-Lite is available in capacities catering to sites for up to 50 people. With state-of-the-art technology and rigorously tested, the Nutra-Lite sets a new standard for sustainable domestic sewage treatment.

The Marsh Nutra-Lite can be supplied as a complete system, combined with the Marsh Phos-Lite for intensive phosphate removal. See Marsh Phos-Lite for details.

SBR technology provides superior effluent discharge

The Nutra-Lite sewage treatment plant harnesses SBR technology, achieving an impressive 84% biological reduction in nitrates. Unlike traditional methods, no chemicals or carbon are used – just biological processes.

The Nutra-Lite boasts the highest overall discharge quality of any plant available today. Additionally, a unique self-cleaning, self-sealing sediment reduction valve ensures total control over suspended solids. No mechanical parts provide reliability and efficiency.

Nutra-Lite not only excels in phosphate and nitrate removal but also significantly reduces other key effluent constituents:

COD: 95.8% – 33mg/l
BOD: 98.7% – 4 mg/l
TNb: 83.9% – 11.1mg/l
NH4n: 99.1% – 0.5mg/l
Ptot: 34.3% – 6mg/l
SS: 97.1% – 11mg/l

 

Marsh Nutra-Lite tank in isolation

 

The Marsh Nutra-Lite sewage treatment plant

Specifications

Model (pop) Length Width Height Inlet invert Inlet dia Ø Outlet invert Outlet dia Ø
NL4 2602 1605 1935 550 110 625 110
NL6 2602 1605 1935 550 110 625 110
NL8 2602 1605 1935 550 110 625 110
NL10 2902 1605 1935 550 110 625 110
NL12 3202 1605 1935 550 110 625 110
NL16 3202 1605 1935 550 110 625

110

 

Operating principle

KEY

  1. Inlet
  2. Primary chamber
  3. Inflow air-lift pipework
  4. Overflow pipework
  5. Recirculation air-lift pipework
  6. Outflow air-lift pipework
  7. Air diffuser
  8. Sediment reduction valve
  9. Secondary chamber
  10. Outlet
  11. Heavy duty GRP shell
  12. Access cover
Marsh Nutra-Lite illustration cutaway with numerical annotation

Features and benefits

SBR technology for superior nitrate reduction
The Nutra-Lite harnesses SBR technology, achieving an impressive 84% biological reduction in nitrates. Unlike traditional methods, no chemicals or carbon are used – just biological processes.

Remote configuration and adaptability
Unique to Marsh Industries, the Nutra-Lite sewage treatment plant can be adapted to seasonal changes in biological treatment, ensuring optimal year-round performance. Remote configuration allows adjustments based on ongoing nitrate reduction research.

Secure telemetry and alarm monitoring
All Nutra-Lite sewage treatment plants feature bi-directional communication for maintenance and monitoring. Telemetry options include mobile connectivity or homeowner Wi-Fi/internet.

Efficiency and cost savings
A single compressor minimises electrical power consumption without compromising performance. Economy mode further reduces running costs during process changeovers.

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.

Certified performance
Rigorously tested at the world-leading notified test centre, PIA GmbH, in Aachen, Germany, the Nutra-Lite is certified to BS EN 12566-3 after 50 weeks of continuous testing. This system holds accreditation to EN12566-3 Annex B for systems of up to 50 Population Equivalent (PE) and complies with the UK Forward for BSEN12566-3, demonstrating its reliability and effectiveness.