Wastewater treatment plants and sewage infrastructure produce H₂S, ammonia, methane, VOCs, mercaptans, and significant odour emissions from biological treatment processes, sludge handling, and pumping stations. These emissions fluctuate with temperature, load, and process conditions, making them difficult to predict and almost impossible to manage without continuous, real-time data.


Odour complaints from surrounding communities are among the most frequent and politically sensitive environmental enforcement issues faced by water utilities and operators globally. Without continuous monitoring across operational areas and site boundaries, operators cannot identify emission sources, demonstrate response, or build the evidence base that regulatory compliance and community trust require.

Wastewater treatment plants and sewage infrastructure produce H₂S, ammonia, methane, VOCs, mercaptans, and significant odour emissions from biological treatment processes, sludge handling, and pumping stations. These emissions fluctuate with temperature, load, and process conditions, making them difficult to predict and almost impossible to manage without continuous, real-time data.


Odour complaints from surrounding communities are among the most frequent and politically sensitive environmental enforcement issues faced by water utilities and operators globally. Without continuous monitoring across operational areas and site boundaries, operators cannot identify emission sources, demonstrate response, or build the evidence base that regulatory compliance and community trust require.

THE CHALLENGE

Wastewater treatment generates some of the most complex and variable emission profiles of any industrial operation, and communities adjacent to these sites feel it most.

Wastewater treatment generates some of the most complex and variable emission profiles of any industrial operation, and communities adjacent to these sites feel it most.

Persium deploys sensor networks across biological treatment zones, sludge handling areas, pumping stations, and site perimeters, continuously monitoring H₂S, ammonia, methane, VOCs, mercaptans, PM, noise, and wind in real time. Configurable threshold alerts notify operational teams the moment conditions approach odour complaint thresholds or permit limits, enabling proactive response before events escalate. All data is time-stamped, exportable, and accessible via API, generating the auditable compliance record that Environment Agency permit conditions and community engagement require.

Persium deploys sensor networks across biological treatment zones, sludge handling areas, pumping stations, and site perimeters, continuously monitoring H₂S, ammonia, methane, VOCs, mercaptans, PM, noise, and wind in real time. Configurable threshold alerts notify operational teams the moment conditions approach odour complaint thresholds or permit limits, enabling proactive response before events escalate. All data is time-stamped, exportable, and accessible via API, generating the auditable compliance record that Environment Agency permit conditions and community engagement require.

WHAT PERSIUM DOES

Continuous odour, gas, and environmental monitoring, from treatment processes to community boundaries.

Continuous odour, gas, and environmental monitoring, from treatment processes to community boundaries.

Odour management and source identification

Continuous H₂S, ammonia, mercaptan, and VOC monitoring across treatment processes and site boundaries, identifying odour events at source, correlating them with wind direction for attribution, and demonstrating response times to regulators and communities. Wind-correlated source apportionment identifies which process area is driving each event.


H₂S worker safety monitoring

H₂S is one of the most significant occupational hazards in wastewater operations, colourless, fast-acting, and potentially lethal at high concentrations. Persium provides continuous H₂S monitoring across confined spaces, pumping stations, sludge handling areas, and treatment zones, with threshold alerts that protect workers before concentrations reach dangerous levels.


Methane and biogas monitoring

Continuous methane monitoring across anaerobic digestion processes, sludge treatment areas, and biogas infrastructure, detecting abnormal release events, supporting safe operations, and generating the records needed for environmental permit compliance.


Boundary and community impact monitoring

Perimeter sensors capture how odour and gas emissions travel beyond the site boundary into surrounding residential areas, providing transparent, time-stamped evidence of boundary conditions for community engagement, regulatory reporting, and planning obligations.


Dust and PM monitoring

Sludge drying, spreading, and vehicle movements generate particulate matter across operational areas and access routes. Continuous PM10 and PM2.5 monitoring at operational zones and site boundaries, with wind-correlated source attribution.


Noise monitoring

Pumping stations, blowers, and treatment plant machinery generate noise that affects surrounding communities. Persium monitors sound levels continuously alongside emissions, delivering a unified environmental dataset from a single deployed sensor.


Regulatory permit compliance

Generate continuous, auditable records that satisfy Environmental Permit conditions, Environment Agency reporting requirements, and Ofwat environmental obligations. Time-stamped data that demonstrates compliance proactively, not in response to an enforcement notice or complaint.

Odour management and source identification

Continuous H₂S, ammonia, mercaptan, and VOC monitoring across treatment processes and site boundaries, identifying odour events at source, correlating them with wind direction for attribution, and demonstrating response times to regulators and communities. Wind-correlated source apportionment identifies which process area is driving each event.


H₂S worker safety monitoring

H₂S is one of the most significant occupational hazards in wastewater operations, colourless, fast-acting, and potentially lethal at high concentrations. Persium provides continuous H₂S monitoring across confined spaces, pumping stations, sludge handling areas, and treatment zones, with threshold alerts that protect workers before concentrations reach dangerous levels.


Methane and biogas monitoring

Continuous methane monitoring across anaerobic digestion processes, sludge treatment areas, and biogas infrastructure, detecting abnormal release events, supporting safe operations, and generating the records needed for environmental permit compliance.


Boundary and community impact monitoring

Perimeter sensors capture how odour and gas emissions travel beyond the site boundary into surrounding residential areas, providing transparent, time-stamped evidence of boundary conditions for community engagement, regulatory reporting, and planning obligations.


Dust and PM monitoring

Sludge drying, spreading, and vehicle movements generate particulate matter across operational areas and access routes. Continuous PM10 and PM2.5 monitoring at operational zones and site boundaries, with wind-correlated source attribution.


Noise monitoring

Pumping stations, blowers, and treatment plant machinery generate noise that affects surrounding communities. Persium monitors sound levels continuously alongside emissions, delivering a unified environmental dataset from a single deployed sensor.


Regulatory permit compliance

Generate continuous, auditable records that satisfy Environmental Permit conditions, Environment Agency reporting requirements, and Ofwat environmental obligations. Time-stamped data that demonstrates compliance proactively, not in response to an enforcement notice or complaint.

Monitoring Applications

What wastewater operators use Persium for.

What wastewater operators use Persium for.

In the UK, Environmental Permit conditions for wastewater treatment works routinely require boundary odour monitoring, with data accessible to the Environment Agency on request. Ofwat's environmental performance framework increasingly requires water utilities to demonstrate measurable improvement in environmental impact, including odour and emissions performance at treatment sites. Under the revised EU Urban Wastewater Treatment Directive, member states must demonstrate compliance with tightening effluent and emissions standards.


In the GCC, major wastewater treatment infrastructure is subject to MOCCAE, NCEC, and municipal environmental permit conditions that are evolving in line with national sustainability commitments. Persium provides the continuous monitoring infrastructure that keeps operators ahead of complaints, enforcement, and regulatory change, with data that is audit-ready from day one.

In the UK, Environmental Permit conditions for wastewater treatment works routinely require boundary odour monitoring, with data accessible to the Environment Agency on request. Ofwat's environmental performance framework increasingly requires water utilities to demonstrate measurable improvement in environmental impact, including odour and emissions performance at treatment sites. Under the revised EU Urban Wastewater Treatment Directive, member states must demonstrate compliance with tightening effluent and emissions standards.


In the GCC, major wastewater treatment infrastructure is subject to MOCCAE, NCEC, and municipal environmental permit conditions that are evolving in line with national sustainability commitments. Persium provides the continuous monitoring infrastructure that keeps operators ahead of complaints, enforcement, and regulatory change, with data that is audit-ready from day one.

REGULATORY CONTEXT

Water utilities and wastewater operators face increasing regulatory pressure to demonstrate continuous environmental performance.

Water utilities and wastewater operators face increasing regulatory pressure to demonstrate continuous environmental performance.

Wastewater treatment sites vary significantly in size, layout, and available infrastructure. Persium Pods are solar-powered and cellular-connected, deployable across any location on site without fixed power or network infrastructure. Engineered for outdoor conditions and operational at temperatures from −40°C to +85°C. One platform manages sensors from primary treatment to perimeter boundaries, giving operators, HSE teams, and environmental managers a single connected view of site conditions.

Wastewater treatment sites vary significantly in size, layout, and available infrastructure. Persium Pods are solar-powered and cellular-connected, deployable across any location on site without fixed power or network infrastructure. Engineered for outdoor conditions and operational at temperatures from −40°C to +85°C. One platform manages sensors from primary treatment to perimeter boundaries, giving operators, HSE teams, and environmental managers a single connected view of site conditions.

DEPLOY WITH PERSIUM

Solar-powered, cellular-connected monitoring across your entire treatment site.

Solar-powered, cellular-connected monitoring across your entire treatment site.

Managing odour, gas, and environmental compliance across a wastewater treatment site?

Managing odour, gas, and environmental compliance across a wastewater treatment site?

View all use cases