By replacing inefficient existing conventional scrapers such as travelling bridges on rectangular primary sludge tanks with Zickert bottom sludge scrapers and surface scum control, wastewater treatment plant operators can reduce energy costs and minimise maintenance requirements and downtime.

In addition, the compact, low headroom Zickert configuration is ideal for tank covering to reduce odour and minimise environmental nuisance. Zickert equipment is easily installed as a retrofit as well as being incorporated in new primary sludge settlement and thickening facilities. Its continuous, low disturbance sludge transportation technology facilitates easy sludge disposal to tankering and dewatering processes.