TL;DR: A filter press for palm oil mill effluent (POME) mechanically dewaters the fibrous, oily sludge left after biological treatment, typically producing a cake at 25-35% dry solids. Chamber and membrane filter presses with recessed PP plates from 470-1200 mm are the standard choice for Malaysian and Indonesian mills processing 30-60 t FFB/h.
Raw POME is one of the heaviest agro-industrial effluents in the world, with typical BOD of 25,000-65,000 mg/L, COD of 50,000-100,000 mg/L, and total suspended solids of 15,000-40,000 mg/L before treatment. Most mills already run anaerobic and aerobic ponds to cut this organic load, but the residual sludge and fiber carryover still need mechanical dewatering before final discharge, land application, or reuse as boiler fuel. A properly sized filter press is the equipment that does this last mechanical step, replacing slow, land-hungry drying beds with a 20-45 minute pressing cycle.
What is POME and why does it need a filter press?
Palm oil mill effluent is the combined wastewater from sterilization, clarification, and hydrocyclone washing in a crude palm oil mill. It carries fine fiber, residual oil, and biological solids that continue settling out even after pond treatment. A filter press applies mechanical pressure through a plate-and-cloth stack to separate that residual solid fraction from the liquid, producing a stackable cake and a clarified filtrate that is far easier to discharge or recycle back into the process.
Chamber vs membrane filter press: which fits POME sludge?
Both types handle POME, but they trade off cake dryness against equipment cost.
| Type | Typical cake dryness | Cycle time | Best for |
|---|---|---|---|
| Chamber filter press | 25-30% dry solids | 20-40 min | General POME sludge, lower capital cost |
| Membrane (diaphragm) filter press | 30-40% dry solids | 25-45 min (incl. squeeze) | Finer oily sludge where minimum cake moisture matters for disposal or fuel use |
For most palm oil mills, a chamber filter press covers routine POME dewatering; mills that want to sell or burn the cake as supplementary boiler fuel often upgrade to a membrane filter press for the extra 5-10 points of dryness. See our plate & frame vs chamber vs membrane comparison for the full decision framework.
Key specifications for a palm oil mill filter press
Sizing depends on fresh fruit bunch (FFB) throughput, since that sets daily sludge volume.
| Mill capacity | Recommended plate size | Chamber count | Approx. hydraulic closing force |
|---|---|---|---|
| 10-20 t FFB/h | 630-800 mm | 20-30 | 300-600 kN |
| 30-45 t FFB/h | 870-1000 mm | 35-50 | 600-1000 kN |
| 60 t FFB/h and above | 1000-1200 mm | 50-70 | 1000-1500 kN |
These are starting points for budgeting; actual plate count depends on your measured sludge concentration and desired cycles per day. Our wastewater filter press range covers the smaller end of this table for satellite mills.
How much does a POME filter press cost?
Entry-level manual chamber presses for small mills typically start around USD 15,000-30,000. Fully automatic, PLC-controlled membrane presses with automatic plate shifters for large mills (60 t FFB/h and above) commonly run USD 80,000-150,000 or more, depending on plate material and automation level. Freight, installation, and local wiring are usually quoted separately. For a full cost breakdown by line item, see our filter press cost guide for Malaysia & Southeast Asia.
Can POME filter press cake be reused?
Yes. Dewatered POME sludge cake is commonly composted together with empty fruit bunches (EFB) to produce organic fertilizer, or co-fired as a supplementary boiler fuel once dried further. Both routes reduce disposal cost and support the zero-waste operating model many Malaysian and Indonesian mills now target.
Why source a POME filter press from a China-based manufacturer?
Senjie is a China-based manufacturer of industrial filter presses, supplying chamber, membrane, and plate-and-frame models for mining, chemical, and agro-industrial wastewater including palm oil mill effluent. Export documentation, containerized packing, and remote commissioning support are standard for buyers in Malaysia, Indonesia, and neighboring markets.
Frequently Asked Questions
Does a filter press replace POME ponds?
No. It complements anaerobic and aerobic pond treatment by mechanically dewatering the residual sludge, which reduces pond desludging frequency and lowers suspended solids in the final effluent before discharge.
What cake dryness can I expect from POME sludge?
25-35% dry solids is typical with chamber or membrane filter presses. Diaphragm squeeze plates push toward the higher end of that range.
What filter cloth works best for oily POME sludge?
Woven polypropylene monofilament cloth in the 300-800 micron range resists oil and fiber blinding better than multifilament cloth. See our filter press cloth guide for material selection by application.
How often does the filter press need cleaning?
With correctly sized cloth and an automatic plate-shake or wash system, cloth cleaning intervals of 200-400 cycles are common before a manual washdown is needed. Actual frequency depends on oil content and flocculant dosing.
Can one filter press serve more than one palm oil mill?
Some groups run a shared, trailer-mounted press across smaller satellite mills instead of installing one per site. Capacity and cycle time still need to be planned so filtration keeps pace with the combined effluent volume from all mills served.
For sizing help specific to your mill’s FFB throughput and current pond performance, contact our engineering team with your effluent flow and TSS data.
By Senjie Engineering Team · Last updated: 2026-07-30
Reference: Palm oil mill effluent – background and characteristics.