Rotadyne Water Technologies
LIQUID PHASE H₂S LOGGING
THE H₂S NUISANCE AT THE WASTEWATER TREATMENT PLANT & SEWER NETWORK
Hydrogen Sulphide (H₂S) emits a Rotten-Egg odour that can affect quality of life for nearby residents and staff. It is also a worker health and safety risk, paralysing the olfactory nerve above concentrations of 150ppm, leading to lethal consequences at concentrations above 500 ppm.
Furthermore, H₂S is corrosive, reducing the lifespan of valuable plant and retic network assets and can inhibit wastewater treatment processes also creating issues in biogas production.
what is H₂S costing the wastewater sector?
The wastewater industry is currently strictly dealing with H₂S related problems in the gas phase, after it has degassed out of liquid phase, resulting in odours and corrosion.
RISK & COST
- The very serious and real OH&S risk to life
- Reduced Asset life, due to corrosion
- Sewer Corrosion
- Odour – EPA compliance
- $950 million+ cost/year in Australia
- Inaccurate tracing of H₂S at its root source with only gas phase detection
- Underdosing/overdosing of chemicals
LIMITATIONS OF DEALING WITH ISSUES IN THE GAS PHASE
Gas-phase measurements are impacted by many variables, causing inconsistencies, and all measurements are impacted by the pronounced concentration gradient from liquid to gas phase.
- Problems only detected when large enough to cause issues such as odours and corrosion
- Over-sized odour control and treatment equipment, to deal with the volumetric expansion of the H₂S whilst gaseous
- Evolving H₂S hotspots in the sewer retic
- Chemicals used for control measures such as dosing are either underdosed or overdosed
The solution: Sulfilogger's liquid phase H₂S logging
The SulfiLogger™ sensor continuously measures H₂S directly in wastewater, air, and inline in process gasses. The sensor provides reliable insights that empowers Asset Managers and Operators to adopt a data-driven and proactive approach to odour and corrosion control in Wastewater, Biogas, and Oil & Gas industries.
FEATURES
- Real-time sensor technology for H₂S & other liquid gas phase odour compounds including dimethyl sulphide, methyl mercaptans, and ethyl mercaptans
- Wireless connectivity for remote data logging
- Robust design for corrosive environments
- User-friendly interface
- Scalable to meet your needs
- Ex/ATEX versions for class 1, Zone 0, 1, 2
- Ability to locally calibrate instrument on site
BENEFITS
- Realise measurable outcomes by saving on operational cost
- Reliable monitoring unaffected by external factors: uninterrupted measurements
- Complete and dynamic overview of H₂S challenge
- Facilitating the use of data-based algorithms for monitoring and control
- Return asset life closer to the design life
- Enhanced safety to pick up on hazardous gases early, protecting your personnel and the environment
- Regulatory compliance – aids in meeting industry regulations and environmental standards
- Realise operation efficiencies, using data to better plan proactively with preventative maintenance
Hitting the issue at the biochemistry:
Take back control & reduce chemical use by 50%
Key Advantages
Durability
- Corrosion Free (LLDPE) collection chamber
- Compatible with acid sulphate soils
- Stainless steel guide rails and chain hoist
Credibility
- Australian owned manufacturing: 50 years experience
- Supporting buoyancy calcs and anchorage guidelines for site installation purposes
- Accreditations & Relevant Standards
Customisation
- Sized for your duty and control needs
- Class rate lids
- Configurable tank setups (max. depth 5m)
- Local and remote SMS alarms
Practicality
- Compact ‘Plug & Play’ control cabinet IP65
- Full automation control (inclusive of level control instrumentation)
- Internal or external isolation and check valve setup
- Expandable extra emergency storage (via storage logs)