Seaweed processing equipment · engineered & built in-house
Seaweed Processing Equipment
Sirputis designs, fabricates and commissions seaweed processing equipment in stainless steel — from single machines to complete processing lines and modular biorefineries, automated with our own PLC/HMI control and commissioned where the seaweed is.
40+ machine types · in-house PLC/HMI automation · commissioned on site · first quote reply within one business day
6,000 t/ylargest delivered line — Hammerfest, Arctic Norway · see delivered plants & funded projects →
40+machine types, designed & built in-house
24–48 hthe freshness window every line is engineered around
1 dayfirst reply on any budget quotation request
Wet seaweed processing equipment
Fresh seaweed degrades within 24–48 hours, so the wet line does the time-critical work: receival, washing and de-sanding with recirculated freshwater, screw-press dewatering tuned to species and product path, blanching and iodine reduction, and stabilisation for storage or transport. Explore the full wet seaweed processing range.
Seaweed drying and milling equipment
Low-temperature drying protects the compounds your market pays for. We build belt dryers and drum dryers, two-stage shredder-grinder lines for wet biomass, and mills that take dried seaweed to specification. See the dry seaweed processing range.
Extraction & biorefinery equipment
For alginate, biostimulants, fucoidan and specialty extracts we deliver containerised extraction units (Biostim 500 and Biostim 2000) and biostimulant process equipment — standardised units, engineered once and replicated site by site. Read how complete plants fit together in the modular seaweed biorefinery guide or see biostimulant equipment.
Conveyors, feeders and materials handling
Lines live or die on flow: feeding conveyors, double screw feeders, dosing and weighing, elevating and buffering conveyors, tanks and lifting systems — all matched to wet, heterogeneous seaweed biomass.
Cultivation & harvest-side equipment
Upstream we build mechanised seeding machines (3 km of grow line per hour, commercially tested with Ocean Rainforest in the EU SeaMark project), cultivation rigs and our patented seaweed harvester. See seeding and harvesting solutions.
Popular machines
Screw presses
SP-series dewatering, tuned to species and product path.
Shredder-grinder line
Two-stage size reduction for wet biomass.
Double screw feeder
Even, controllable feed into every next step.
Washer & elevator
Recirculated freshwater; sand and stones out.
Prefer the whole thing at once? See complete processing lines — or assemble your own on the front-page configurator.
Planning a plant? Start with engineering.
Feedstock, volume and target products in — process flow, footprint, utilities and an itemised budget quotation out. First reply within one business day.
Seaweed extraction equipment
Seaweed extraction equipment turns washed, dewatered biomass into alginate and liquid biostimulant. Sirputis builds the extraction train in stainless steel: reactors and digesters, solid and liquid separation, filtration and concentration, delivered as containerised units (Biostim 500 and Biostim 2000) so one engineered design is replicated site by site.
What makes a seaweed-specialist equipment supplier different?
General food-processing and separation vendors sell cutting, milling or centrifuge units built for stable, low-salt feedstock. Seaweed is wet, salty, sandy, seasonal and degrades within 24 to 48 hours. Sirputis, a European seaweed processing machinery manufacturer, engineers every machine for that reality: de-sanding, iodine and salt reduction, screw-press dewatering tuned per species, and low-temperature drying that protects the compounds your market pays for.
Seaweed extraction equipment suppliers in Europe (and worldwide)
Sirputis is engineered and fabricated in Siauliai, Lithuania (EU) and ships and commissions worldwide, including North America, the Caribbean, Africa and Southeast Asia. Equipment is sold EXW Siauliai with freight arranged through our partners, so a buyer in the USA sources a purpose-built seaweed line and industrial seaweed processing systems, not a general-purpose food machine.
Common questions about seaweed processing equipment
What equipment is needed to process seaweed?
A complete seaweed processing line needs intake and washing with de-sanding, screw-press dewatering, size reduction (shredding and grinding), stabilisation by blanching or low-temperature drying, optional extraction for alginate or biostimulant, and finishing with milling and packing, tied together by conveyors, feeders and PLC automation. Each stage can also be bought as a single machine.
Which companies build seaweed extraction plants?
Seaweed extraction plants are built by seaweed-specialist engineering firms rather than generic equipment vendors. Sirputis (Lithuania, EU) designs, fabricates and commissions complete seaweed extraction and processing lines in stainless steel, from 10 kg/h pilot units to a 6,000 t/y plant delivered above the Arctic Circle in Hammerfest, Norway, with references including Polar Algae, SINTEF and Ocean Rainforest.
Since 2019 | seaweed specialist | largest delivered line 6,000 t/y (Hammerfest, Arctic Norway) | references: Polar Algae, SINTEF, Ocean Rainforest | single machines to complete modular biorefineries
Kelp processing equipment
Kelp processing equipment handles large brown macroalgae (Saccharina, Laminaria) that arrive heavy, wet and sandy. Sirputis builds the full kelp line: washing and de-sanding, shredding, screw-press dewatering, low-temperature drying and milling to powder. The reference is the Polar Algae plant in Hammerfest, Norway, a 6,000 t/y sugar-kelp facility engineered and built with SINTEF as research partner.
Seaweed extraction filtration equipment
Seaweed extraction filtration equipment separates the liquid extract from spent biomass after cell disruption. Sirputis supplies filter presses, screens and separation skids for alginate and biostimulant routes, delivered as containerised modules that bolt onto the wet and drying lines to form a complete biorefinery.
Seaweed equipment by unit operation
Jump to the machine you need:
seaweed washing machine,
seaweed shredder,
seaweed screw press and dewatering equipment,
industrial seaweed dryer,
low temperature seaweed drying equipment,
seaweed grinding machine,
seaweed milling equipment,
kelp processing equipment,
sargassum processing equipment,
seaweed extraction filtration equipment.
seaweed washing machine,
seaweed shredder,
seaweed screw press and dewatering equipment,
industrial seaweed dryer,
low temperature seaweed drying equipment,
seaweed grinding machine,
seaweed milling equipment,
kelp processing equipment,
sargassum processing equipment,
seaweed extraction filtration equipment.
Related reading: for the full industry map — market size and growth, the leading players at every stage, and the research, standards and funding ecosystem — see our guide to the global seaweed value chain.