Introduction to Effluent Treatment
Effluent treatment is essential after vibratory finishing as the process water becomes contaminated with abrasive, metal fines, oil, and metals. Cleaning the effluent is necessary before disposal or recycling back into the finishing process.

Centrifugal Filters
Centrifugal filters use centrifugal force to separate abrasive and metal fines, as well as trapped oil, from process water. This results in semi-dry sludge that can be removed, allowing the cleaned water to be reused in the finishing machine.

Benefits of Recycling
Recycling process water significantly reduces water consumption by up to 98% and compound usage by up to 90%, also lowering waste disposal costs.

Model Specifications
The ZA model range includes two models:

• ZA 04: Capacity of 1,000 l/h, sludge capacity of 14 l, centrifugal rating of 1,920 g, waste water tank of 800 l, process water tank of 400 l, direct drive, dimensions of 1,660 x 2,800 x 2,120 mm, and average power consumption of 4.0 kW.
• ZA 06: Capacity of 2,000 l/h, sludge capacity of 28 l, centrifugal rating of 2,417 g, waste water tank of 1,500 l, process water tank of 1,000 l, V-Belt drive, dimensions of 2,250 x 3,000 x 2,200 mm, and average power consumption of 7.0 kW.

Cleaning by Centrifugal Force
The centrifugal filter technology removes solid fines from process water using centrifugal force up to 2,417 times greater than gravity. Flocculants can be added to remove oil and extremely fine solids (<1 µm). The compound used in finishing remains largely in the process water for reuse.

Automatic Peeling Centrifuges
The fully automatic, PLC-controlled ZA 06 model can clean up to 2,000 liters/h of contaminated process water. Sludge is automatically peeled and dumped into a container. The modular design allows for customization to meet specific customer needs, including different tank sizes, cooling systems, pump stations, and dosing systems.

Functional Diagram
The diagram illustrates the process flow: dirty process water enters the centrifuge, where it is cleaned, and the sludge is separated. The cleaned water is stored in a tank for reuse, while the sludge is collected for disposal.