Sewage Treatment Plant Gas Monitoring Systems

Gas Detection Solutions for all Waste Water Environments

Water is used to flush transfer household and commercial waste to allow transportation to the WWTP’s. The end result is WasteWater that needs to be treated in a WWTP facility. Due to the fermentation process in a sewage treatment plant, there are many by product gases that can be harmful to the humans and the environment. Methane CH4 and Carbon Dioxide CO2 are the main gas types however Hydrogen Sulfide H2S, Chlorine Cl2, Chlorine Dioxide ClO2, Ammonia NH3 and VOC’s can also be present. Therefore, it is important to continuously monitor for these gas types to ensure a safe environment and also to monitor the results of the fermentation in the Biogas process.

WWTP areas monitored

  • Sewage Treatment Room
  • Digestors
  • Pump stations
  • Pump Rooms
  • Sedimentation tanks
  • Ammonia stripping plant
  • Sludge tanks
  • Biofuel storage tanks

Stormwater Monitoring Solutions and Hazardous Areas

As stormwater can also contain flammable liquids, solvents and toxic chemicals, it is important to monitor the distribution throughout the WWTP processes to ensure that the contaminants don’t emit alarm limits level gas concentrations. All our systems can be connected to the plants SCADA and DCS to allow continuous monitoring and allow historical logging. We as standard have multiple analog and digital outputs that can activate both visual and audible alarms i.e. beacons/sounders. We also have IECEx certification so you can be confident that we conform with all necessary legislation and regulations, so our sensors can be installed in Hazardous areas. We also have IECEx certification so you can be confident that we conform with all necessary legislation and regulations, so our sensors can be installed in Hazardous areas.

Custom Designed Solutions and Project Management

Our fully bespoke designable systems can be retrofitted and also newly integrated into the sewage and biogas processes. Our equipment is extremely robust and can be installed in harsh environments to ensure that all locations can be monitored. For digester systems in particular CO2 is monitored as the main by product. Sewage treatment rooms are generally monitored for Methane and Hydrogen Sulfide, our systems can be connected to the existing extraction fan system and enable when alarm limit concentrations are present.
All our systems can be connected to the plants SCADA and DCS to allow continuous monitoring and allow historical logging. We as standard have multiple analog and digital outputs that can activate both visual and audible alarms i.e. beacons/sounders.

SEWAGE TREATMENT PLANT GAS Monitoring Systems Products

Site analysis and system engineering

Each project starts with consultation on our clients requirements. JWII then design a Gas Detection System to meet the project needs


Service and maintenance

Our service team can provide comprehensive field service as well as workshop repairs. We can also help you plan the maintenance of your devices with a periodic maintenance contract.

Site Installation

Our in house technical team can assist you in the installation and commissioning of your gas detection system. From physical mounting to connection and start up.


Calibration Services

Our calibration facility offers you peace of mind that your gas detection system is operating to specification. We can carry our field calibration as part of your service contract or in house calibration at our facility.

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Discover all type of applications

We also have IECEx certification so you can be confident that we conform with all necessary legislation and regulations.

JWII Gas and Flame Detection Solutions

JWII Gas Detection focus on high quality gas detection systems with a complete support package including design, drawing, commissioning and after sales support
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