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Skip Navigation LinksHome > Water Purification > Water & Wastewater Treatment > Filtration > Tertiary Treatment > Nitrifying SAFNitrifying SAF

Nitrifying SAF

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north america
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dave slack
+1(813) 886-9331
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north america
northeast
ken wineberg
+1(412) 494-4093
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north america
west
steve stanish
+1(412) 494-4082
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latin america
virgilio martinez
+1(424) 247-3627
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middle east/africa
ghazi almani
+202 2703 2005
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asia pacific
bill stimeling
+1(215) 997-3754
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europe
david shepherd
+44 (0)1827 266 000
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service, repair & spare parts
TETRA® Nitrifying Submerged Aerated Filters
The advantages of biological treatment offered by Submerged Aerated Filters (SAF) are now widely accepted and, as a result, the technology has become established for waste water treatment worldwide. The TETRA® Nitrifying SAF (NSAF), provided by Severn Trent Services, is proving to be a very robust solution for Tertiary Ammonia Removal, with a number of installations in recent years.

The TETRA NSAF is an up-flow, fixed-film biological reactor and uses blast furnace slag media for efficient ammonia removal, offering surface areas up to 240m2/m3.The media cannot collapse or be lost by flotation, and with a proven, long lifetime, media replacement costs are minimised. The greater thermal capacity of the media compared to plastic alternatives helps to maintain high levels of ammonia removal during winter periods.

A standard TETRA NSAF utilises a simple process in which air is supplied at a fixed rate, thus eliminating the need for any overly complicated control system. Simple monitoring of the process blower(s) and switching over to the standby unit if necessary are the primary operational requirements. The recently developed NSAF+ system offers significant savings in electricity costs over a conventional NSAF plant.

Literature Downloads:
Product Brochures
Apliclor – Severn Trent Services Soluciones para Aguas y Aguas Residuales
Prodotti per la Filtrazione: SOLUZIONI CHIAVI IN MANO PER IL TRATTAMENTO ACQUE POTABILI E REFLUE
Severn Trent Services soluzioni globali
TETRA® SAF and NSAF Submerged Aerated Filters (Europe)
TETRA® SAF™ 系统 浸没式好氧滤池－用于污水处理
Wastewater Treatment Solutions: Wastewater Treatment Solutions from Severn Trent Services (Europe)
Articles
Fixed-Film biological nutrient removal helps mitigate effects of rapid industrialization (Water& Wastewater Asia May/June 2008)
Case Studies
Case Study - Berkhamsted: TETRA® Nitrifying Submerged Aerated Filter (NSAF)
Case Study - Brentwood: TETRA® Nitrifying Submerged Aerated Filter (NSAF)
Case Study - Crankley Point: TETRA® Nitrifying Submerged Aerated Filter and TETRA® DeepBed Filter
Case Study - Strongford: TETRA® Nitrifying Submerged Aerated Filter (NSAF)+
Case Study - Worksop: TETRA® Nitrifying Submerged Aerated Filter and TETRA® DeepBed Filter
TETRA® Biological Treatment Used Successfully at Jiashan City, China
Miscellaneous
Severn Trent Services Ltd Contact List
Severn Trent Services Ltd Standard Terms and Conditions of Sale
Multimedia
Severn Trent Services Reseña de la Presentación (Latin America)
TETRA® DeepBed™ Filter (With SBR Detail) Video
TETRA® DeepBed™ Filter (Without SBR Detail) Video

Press Releases:
7/7/2010: Severn Trent Services Showcases Latest Technological Developments in Water and Wastewater Treatment at IFAT Entsorga
4/23/2009: Severn Trent Services To Move European Water Purification Business to Tamworth UK
6/26/2008: Severn Trent Services to Show World Leading Technologies at Aquatech 2008
3/20/2008: Severn Trent Services Showcase New Water Treatment Solutions at IFAT 08
2/29/2008: Patented Three Stage Fixed Film Biological Nutrient Removal System Successfully Pilot Tested in China
8/21/2007: TETRA DeepBed Filtration Technology Wins Earle B. Phelps Award
3/20/2007: Severn Trent Services Selected to Provide Tertiary Nitrification to U.K. Utility
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