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
Typical question answered by our expert
There are many parts of the water, waste water treatment process that may have flammable, toxic and inert gases present that need to be monitored to ensure worker exposure is limited and that the source can be eliminated or controlled. The usual water, waterwater treatment plant target gases are Methane CH4, Hydrogen Sulphide H2S, Chlorine Cl2, Sulphur Dioxide SO2 and Oxygen. There are a few other target gases that may be monitored to cover all aspects of the typical Water, waste-water treatment plant which could include Chlorine Dioxide Cl02, Ammonia NH3 and Ozone O3.
There are 3 common target gases that are found in a wastewater treatment plant, these are Methane CH4, Hydrogen Sulphide H2S and Oxygen O2. These cover the flammable, toxic and inert gas aspects of the environment which need to be monitored and controlled, as they are by products of the treatment plant process.
An example would be Hydrogen Sulphide which is damaging to your health even at 10 -500ppm levels, higher than this can be fatal. One of the side effects of H2S inhalation is losing your sense of smell. This could then cause you not to realise that H2S is in the current environment. H2S has a very distinctive pungent smell which is the first indicator of high levels.
Usually, toxics gases are monitored using an electrochemical cell. The measurement range could be anything from very low ppm levels to >5000ppm
To monitor target gases, you can either use personal / portable sensors and fixed sensors. The personal / portable sensors are usually clipped to an individuals clothing and will monitor the current environment and provide indications of a safe or alarm level target gas concentrations. Fixed sensors are usually mounted in a required location and will continually monitor the surrounding atmosphere and provide indications of rising target gas concentrations via either local audible visual alarms or signals to remote annunciators or control equipment.
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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We also have IECEx certification so you can be confident that we conform with all necessary legislation and regulations.
