Chrome tanning wastewater is precipitated at pH ~8.5 and dewatered by filter press, typically reaching 30-45% solids (55-70% moisture). PP cloth and chamber or membrane plates handle the fine chromium hydroxide floc; some plants recover chrome from the cake for reuse.
Quick answer: A filter press gives the driest cake (often 20–30 percentage points drier than a belt press) and the clearest filtrate but runs in batches; a decanter centrifuge runs continuously and compactly but leaves a wetter cake and uses…
How coal washing plants dewater coal slurry and fine coal tailings with chamber and membrane filter presses, including moisture targets, plate sizing, and filter cloth selection.
Most filter press faults trace to cloth blinding, low feed pressure, or decaying closing pressure. A field guide to plate leaks, wet cake, slow cycles and poor cake release.
A sand washing filter press dewaters aggregate wash-water slurry into stackable cake and recycles 80–95% of process water. Chamber vs membrane, sizing table, cloth choice, and FAQ.
What to confirm before buying a filter press from China — CE/ISO certifications, warranty and after-sales support, and realistic delivery and installation timelines for Malaysia.