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CSO Technik

 
 
 
Sector Utilities
Project type Refurbishment
Services provided Design
Installation
Commissioning
Year completed 2007
Project location Wales
Client Dwr Cymru (Welsh Water)
Consultant Dwr Cymru (Welsh Water)
Contractor Imtech Process
Products used Terminodour™ Odour Control
 
 

Challenge

The Swansea WWTP was constructed in 1996 to meet the stringent European Union tests for Swansea Bay. At the time of construction, it was deemed to be one of the most technologically advanced WWTPs in the world. The plant is designed to handle a population equivalent of 165,000, but problems began to arise when the Swansea population grew substantially.

The plant had in place a three-stage chemical scrubber system to handle the heavy organic loading. In 2006 the chemical scrubber developed a leak and extensive refurbishment/replacement was going to be required.

Solution

A six-month trial of Terminodour™ was carried out in the primary lamella tank area of the building which was the worst affected area of the plant. Terminodour™ has a relatively low capital cost and very low operational costs but was unproven on a project of this magnitude, however it had worked successfully at several smaller Dwr Cymru Welsh Water sites. If the trial was successful, Terminodour™ would be installed throughout the building.

Odalog monitors were installed in the primary lamella area; just above the top water level and 1.5m above that. The criteria for success were determined to be an 80% reduction in odours between the two logger points.

Outcome

Terminodour™ easily met the performance requirements with an average H2S reduction of 92.5%.

The system has run effectively for several years now and the following benefits have been noted.

  • The system continues to provide effective odour control and no odour complaints have been received.
  • Capital cost of the system was less than 50% of refurbishing the chemical scrubber.
  • Operators no longer have to wear breathing apparatus to carry out their duties.
  • The client has been able to reclassify and downgrade hazardous areas.
  • Corrosion within the building and particularly to the control panel BUS bars and wiring, which were being replaced every 6 months, has been eliminated.
  • Maintenance is minimal but carried out by CSO under a quarterly service agreement.
  • Operational costs have been drastically reduced.

Project data

  • Building Volume: 16,155m3
  • H2S Loading: 150 – 200ppm
  • Performance: Reduces H2S by 92.5% internally and 99% externally


Challenge

The Swansea WWTP was constructed in 1996 to meet the stringent European Union tests for Swansea Bay. At the time of construction, it was deemed to be one of the most technologically advanced WWTPs in the world. The plant is designed to handle a population equivalent of 165,000, but problems began to arise when the Swansea population grew substantially.

The plant had in place a three-stage chemical scrubber system to handle the heavy organic loading. In 2006 the chemical scrubber developed a leak and extensive refurbishment/replacement was going to be required.

Solution

A six-month trial of Terminodour™ was carried out in the primary lamella tank area of the building which was the worst affected area of the plant. Terminodour™ has a relatively low capital cost and very low operational costs but was unproven on a project of this magnitude, however it had worked successfully at several smaller Dwr Cymru Welsh Water sites. If the trial was successful, Terminodour™ would be installed throughout the building.

Odalog monitors were installed in the primary lamella area; just above the top water level and 1.5m above that. The criteria for success were determined to be an 80% reduction in odours between the two logger points.

Outcome

Terminodour™ easily met the performance requirements with an average H2S reduction of 92.5%.

The system has run effectively for several years now and the following benefits have been noted.

  • The system continues to provide effective odour control and no odour complaints have been received.
  • Capital cost of the system was less than 50% of refurbishing the chemical scrubber.
  • Operators no longer have to wear breathing apparatus to carry out their duties.
  • The client has been able to reclassify and downgrade hazardous areas.
  • Corrosion within the building and particularly to the control panel BUS bars and wiring, which were being replaced every 6 months, has been eliminated.
  • Maintenance is minimal but carried out by CSO under a quarterly service agreement.
  • Operational costs have been drastically reduced.

Project data

  • Building Volume: 16,155m3
  • H2S Loading: 150 – 200ppm
  • Performance: Reduces H2S by 92.5% internally and 99% externally




Related entries

  • CSO Technik: Odour Control - Terminodour™ Ionisation System
    Odour Control - Terminodour™ Ionisation System
    CSO Technik
    Terminodour™ positive pressure ionisation systems are used to treat inlet air to a building or structure, to provide airborne odour control. The introduction of ionised air is effective in controlling odours, ensuring compliant discharge to atmosphere, with the additional benefit of producing superior indoor air quality. Systems are designed and...
    Product, 13 February 2018
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