Solving H2S issues based on actual operating conditions
Demands for efficiency in the wastewater sector continue to increase, and wastewater treatment increasingly is centralised. This means that wastewater is often transported over great distances using pressurised pipes. In such pipes, anaerobic conditions can often lead to the formation of hydrogen sulphide which creates several problems for utility companies.
Hydrogen sulphide formation in sewers is a complex process that depends on many factors, including temperature, the composition of the wastewater, retention time in the pipes, and when and for how long the manhole pump is running. An ideal solution to hydrogen sulphide problems must take all of these factors into account. It must be based on actual operational conditions in order to deal with this unpredictability. This is precisely the approach that has led to the Grundfos Hydrogen Sulphide Solution.
Watch our animated film explaining the issue
Hydrogen sulphide formation in sewer systems is a complex process. Get a quick introduction with our short animated film.
Reducing chemical expenses by 70%
When Danish utility company Mariagerfjord Vand A/S experienced hydrogen sulphide issues in a challenging pumping main, Grundfos Hydrogen Sulphide Solution quickly solved the problems. All odour issues have vanished and chemical expenses cut by 70% in the affected area.
Full overview of the Grundfos H2S Solution
Integrated Grundfos components solve a common problem in the wastewater sector. This automated solution eliminates hydrogen sulphide.
Download the brochure and get the full overview
H2S solution ensures unbeatable reliability and eases daily operation
The heart of the Grundfos Hydrogen Sulphide Solution is an advanced control algorithm, implemented in Grundfos Remote Management (GRM). GRM receives signals from a gasphase logger installed in a manhole. The logger measures H2S levels once every 15 seconds and sends measurements to GRM which also receives flow measurements from Grundfos Dedicated Controls. The setpoint is adjusted frequently to avoid overdosing.
Based on the data received, the algorithm automatically calculates the correct dosing setpoint for chemicals such as iron sulphate. It then transmits information on the calculated setpoint for dosing to a Grundfos SMART Digital dosing pump which handles the chemical dosing with great accuracy, even at varying flow patterns. Communication between the devices is handled through a Grundfos CIU communication unit. The main system components are manufactured by Grundfos, ensuring seamless integration with optimal use of each individual component, ease of operation and unbeatable reliability.
Several benefits in your daily work
The Grundfos Hydrogen Sulphide Solution eases your daily work in many ways. The algorithm adapts the dosing amount to current demands in the pumping main, and the operating staff do not need to control dosing manually. GRM issues a warning in case of problems, and the staff can access the internet based system at any time to view operational status and make any necessary adjustments. Depending on requirements, system threshold values can be set to abate odour and/or corrosion issues, making the solution suitable for any A to B single-line sewer installation.
The Grundfos Hydrogen Sulphide Solution provides several benefits:
- Efficient: odour and/or corrosion issues are removed.
- Economical: the solution only doses the exact amount needed, providing chemical savings. When the system is set up to reduce corrosion, pipes and other equipment do not degrade at the same rate.
- Easily manageable: web-based monitoring provides a complete, real-time overview of system status.
- Labour saving: the fully automated solution frees up staff time for other tasks.