Photo credit: TasWater Case study Optimized dosing for H2S control at wastewater treatment plant TasWater’s Ti Tree Bend Sewage Treatment Plant faced persistent odor incidents and high chemical costs due to inefficient dosing for H₂S control. By adopting automated dosing control with a SulfiLoggerTM H2S sensor for real-time, liquid-phase monitoring, the plant dynamically matched dosing rates to actual H₂S levels. This approach optimized chemical use and cut expected annual costs by up to 87% or $250,000. Download this case as a PDF Background Hydrogen sulfide (H2S) dosing control in [...]

Case study H2S sensor optimizes odor emissions control at Vesthimmerland Biogas Vesthimmerland Biogas wanted an alternative to grab sampling for measuring the plant's odor emissions. To achieve this, two SulfiLoggerTM H2S sensors were installed in the CO2 discharge stream. This eliminated the plant's need for manual grab samples and costly tests by external bodies, and the sensors' real-time data furthermore provided valuable insights into biofilter and scrubber performance. Download this case as a PDF Background Hydrogen sulfide (H2S) odors pose a significant challenge in biogas operations as they may [...]

Case study Biogas plant improves carbon filter performance using H2S data Vesthimmerland Biogas sought an automated rather than manual H2S monitoring setup to optimize filter performance and protect plant equipment. This was achieved using two SulfiLogger™ H2S sensors installed before and after carbon filters in the upgraded biomethane stream. This approach enabled real-time tracking of filter performance, while also boosting the operator's confidence to perform other plant optimizations. Download this case as a PDF Background Hydrogen sulfide (H2S) poses a challenge in biogas affecting both equipment lifespan and process efficiency [...]

Case study Inline H2S sensor optimizes CHP engine efficiency at Haerup Biogas Danish Biogas plant Haerup Biogas wanted to enhance the efficiency of its CHP engines and reduce maintenance on H2S sensor equipment. To achieve this, the operator installed a SulfiLoggerTM H2S sensor, offering continuous in-pipe measurements for early biofilter cleaning alerts. This proactive approach reduced sensor maintenance needs, minimized the risk of gas flaring, and optimized the plant's overall efficiency. Download this case as a PDF Background Hydrogen sulfide (H2S) presents a significant challenge for Combined Heat and [...]

Case study Liquid-phase H2S sensor provides new insights at treatment plants Despite causing severe odor, corrosion, and worker safety issues, H2S is still a neglected process parameter at wastewater treatment plants (WWTPs). This case study examines how two of Veolia's French subsidiaries; Klearios and Société des Eaux de Marseille (SEM), gained new insights into the H2S challenges at two WWTPs. These insights were obtained using a novel sensor for permanent and real-time monitoring of H2S in untreated sewage. Download this case as a PDF Background H2S is a major challenge [...]

Case study New sensor provides better H2S insights in sewer networks This case study shows that a new sensor technology provides better insights into how hydrogen sulfide impacts sewer networks by continuously measuring H2S directly in or just above untreated wastewater. This new approach to H2S monitoring delivers true and reliable data that allow wastewater utilities to manage and optimize H2S mitigation activities on a fully informed basis. Download this case as a PDF Background The toxic, foul-smelling, and highly corrosive gas hydrogen sulfide (H2S) poses a major challenge [...]

Chemical dosing

Danish SaaS company integrates the SulfiLogger™ sensor in the new data|APEX big data analytics platform for water utilities.

City-wide mapping of the development of sulfide in the village Solbjerg using sensor data.

Danish biogas plant prepares for dynamic FeCl₂ dosing to optimize desulfurization processes.

Dynamic sulfide scavenger dosing initiated at North Sea platform (case study follow-up).

North Sea operator preparing for dynamic sulfide scavenger dosing.

Cost-optimized activated carbon filter replacements in biogas plants.