GANDEN was engaged to design and assist in the commissioning of a new upgraded sludge thickening and supernatant return system at the Mudgeeraba Water Treatment Plant. Critical to the success of this project was the engagement of the Seqwater operational and process teams to determine the appropriate sizing and operational requirements of the upgraded sludge system. Highlights and Innovations The steep site meant that GANDEN had to carefully design the rising main for supernatant to be pumped back to the treatment plant