Case Study
Wastewater treatment system
Who we are
SEKO’s manufacturing processes are driven by the Kaizen principle of continuous improvement, which sees us constantly refine our systems by integrating cutting-edge technology to adapt to the latest market needs.
As well as enhancing product quality, this philosophy allows SEKO to minimize waste and streamline production. The resulting savings are passed on to customers, who enjoy premium-quality yet cost-effective solutions to their requirements.
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Twenty-four national SEKO subsidiaries across six continents means that, wherever you are, you enjoy the same exceptional level of service as every SEKO customer around the world.
And an accredited partner distributor network allows us to provide local customer support in over 120 countries, so you benefit from regionspecific knowledge and rapid delivery of goods as well as world-class after-sales service and technical assistance.
2 Case Study - Wastewater treatment system
Chemical dosing solutions for a new-build sewage plant
During construction of a sewage plant in Sichuan, China, the operator required a dosing pump control system in order to precisely manage chemical injection as part of the site’s state-of-the-art design.
The plant – an 80-million-yuan ($11-million) development expected to process 20,000 m³ of sewage per day – was to incorporate advanced technology for the handling of complex applications such as anaerobic-anoxicoxic (AAO) including a deep bed denitrification filter.
Meanwhile, a key requirement during planning was the protection of water quality and the maintenance of a healthy ecological balance within local water bodies.
For this, SEKO was approached to supply a dedicated solution for sodium hypochlorite, phosphate remover and carbon-source dosing at various stages of the process.
Following an initial site assessment and collaboration with the operator, SEKO recommended its motor-driven Spring series pumps and Elektra control units as the ideal solutions to meet all the operator’s needs.
3 Case Study - Wastewater treatment system
24/7 data on demand
With a requirement for high-accuracy dosing to ensure reliable water treatment and reduced chemical consumption, Spring and Elektra’s exceptional precision to within 2% of target made the combination the natural choice.
Meanwhile, Elektra’s integrated Wi-Fi server and connection to the SekoWeb smartphone app and online platform meant that technicians could view live and historical dosing data on demand 24/7 from any location.
With this essential information at their fingertips they would gain a complete understanding of their process while the ability to manage programmes and view alarms remotely allowed them to implement changes, identify faults and plan maintenance without the need to attend site.
Not only would this enable the operator to save on travel time and cost, it meant they could also reduce their environmental impact as part of a long-term sustainability policy.
4 Case Study - Wastewater treatment system
Applications Elektra Flow rate 1.5 - 1,000 l/h Max. pressure 20 bar Water Treatment Industrial Processes
Elektra also boasts a Modbus RS485 protocol integrated on the main board, giving the operator another professional data communication option should Wi-Fi connection be unavailable.
The combination of Spring and Elektra provides the client with exceptional real-time flow monitoring and control, ensuring that chemical dosing remains stable throughout operation – an extremely valuable feature in a process where consistency is essential.
Finally, with 4 to 20 mA analogue output, Elektra is both highly noise resistant and well suited for longdistance transmission – ideal for this large-scale site.
Since the installation of SEKO’s Spring and Elektra systems, the operator has reported excellent control of their process and a significant water quality improvement in surrounding watercourses.
Another example of a SEKO solution helping customers achieve long-term, cost-effective improvements in their daily operations.
5 Case Study - Wastewater treatment system
Power Flow rate (low) Flow rate (high) Pressure Applications Spring Series Drinking Water Fertigation Flow rate 5.5 - 1,200 l/h Max. pressure 16 bar
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