Success stories

Honghu WWTP (China)

Efficiency and stability on the most stringent consents

Honghu WWTP (China)

Plant characteristics

  • Design flow: 50.000 m3/d
  • Biological treatment: 2x A2O plug-flow reactors + MBR
  • Aeration system:
    • 3x magnetic levitation turbo-compressors
    • Automatic regulation valves
  • Effluent discharge consent:
    • BOD5 < 6 mgO2/L
    • COD < 30 mgO2/L
    • TN < 15 mgN/L (internal Standard <12 mgN/L)
    • N-NH4+ < 1,5 mgN/L
    • TP < 0,3 mgP/L (internal Standard <0,2 mgP/L)

Challenge

  • To reduce the aeration and costs whilst ensuring the effluent quality on a stringent discharge consent

  • To monitor, optimize and stabilize treatment performance

  • Compare performance with competitors

  • To become a 100% automatically managed WWTP

CREApro® platform fitted with self-customized process intelligence tools and editable control configuration settings : an every day as well as a strategic tool.

Intelligent control loops included and tailored:

Solution implemented

  • AERATION: N-control and MOV-control modules with:

    Dynamic and individual DO setpoint
    Dynamic and predictive valves opening degree control
    Dynamic pressure control
    Dynamic individual blowers control

  • CHEMICAL DOSING:

    P-control module, with dynamic dosing rate setpoint

  • MIXED LIQUOR MANAGEMENT:

    SRT-control module, to maintain stable MLSS
    RASi-control module for dynamic internal recirculation pumping

KPIs

100%

Effluent quality compliance

19%

Reduction of kWh / m3 *

13%

Reduction of PAC dosage / m3 treated

20%

Reduction of events with TN > 12mgN/L

70%

Reduction of events with TP > 0,2mgP/L

*: 11% compared to the previous competitor solution in place

Feedback from the user

“We TWT are one of Createch360º’s strategic partners, and have collaborated with Createch360º to deliver their control platform solution on this site and many others across China. Createch360º have gradually trained us, so our process and IT teams work hand in hand to jointly deliver CREA cutting edge solutions with our local market knowledge and support. We firmly believe this solution brings much value to the water industry, as can be appreciated on this reference in terms of process stability and operational costs savings, in particular thanks to the high level of flexibility and customization which provides the most appropriate solution for each site.”

Shenzhen thinking water technology Co., Ltd.