STRO spacer tube modules (ST_RO series)

High-pressure rolled RO modules with a wide parallel spacer for leachate and high-COD, high-salinity wastewater.

Product categories

DT/ST modules

Spacer tube (ST) modules use industrial anti-fouling RO or NF membranes in a rolled design with a wide, parallel feed spacer. They combine the pressure rating and fouling resistance of DTRO with the larger membrane area of spiral wound RO, so more water is treated per module.

Key features

Parallel spacer keeps feed flowing freely and resists blocking
Suited to high-concentration, high-COD wastewater
Larger membrane area per module than DT, higher flux
Salt rejection about 98.5% under standard test conditions
Operating pressure 90 or 120 bar

Applications in detail

Landfill leachate and high-salt industrial wastewater
Electroplating, textile, dyeing, chemical, coal chemical, coking and steel wastewater
Desulfurization wastewater and zero liquid discharge projects
Seawater and brackish water desalination

Process	Reverse osmosis (STRO), nanofiltration (STNF)
Operating pressure	90 – 120 bar depending on model
Effective membrane area	25 – 30 m² per module
Max. temperature	45 °C
pH range	3 – 11 (operation), 2 – 12 (cleaning)
Salt rejection	98.5%

Model list

Model	Max. pressure	Membrane area	Wet weight	Rejection	Flux
ST_RO_MP9.0	90 bar	25 m²	60 kg	98.5%	500 L/h
ST_RO_MP9.0_Plus	90 bar	30 m²	70 kg	98.5%	750 L/h
ST_RO_HP12.0	120 bar	25 m²	90 kg	98.5%	420 L/h
ST_RO_HP12.0_Plus	120 bar	30 m²	100 kg	98.5%	500 L/h