RisingSun Membrane's Spacer Tube (ST) Module can be used for brackish water desalination and waste water treatment. We can offer either reverse osmosis or nanofiltration membrane sheet in order to deal with different kinds of waste water.
Special Membrane Feed Spacer
We use a very special ladder type feed spacer, which only come into marginal contact with their neighbouring membrane sheet. In this way, the spacers are able to minimise the resistance that is exerted on the feed flow.
This special design also greatly reduces the build up of fouling materials compared with common element.
Special Configuration with flow direction
|
Color Instruction
Green: Feed Wate
Blue: Permeate
Red: Seals and O-rings
On this ST module the feed is from the top.
The feed water is diffused by the top seal plate to send the feed water evenly around the top of the membrane element.
The feed water flows down through the membrane element, as it does pure water permeates and flows out thourgh centre collection device into the space around the tie rod and flows down to the permeates outlets.
The concentrated feed water is channelled by the bottom seal plate to the bottom HP connection and out of the module. |
Features
1. Spacer tube (ST) module is high strength design, up to 120 bar operating pressure.
2. Open feed spacer with low flow resistance and concentration polarization.
3. Spiral wound structure with more membrane area.
4. Membrane is long using life.
5. Competitive price and fast delivery.
6. Cross replacements: Nanostone (Rochem)
STRO Membrane element specification (operation pressure 90bar)
| Type |
STRO |
STNF |
| Model |
STRO3-8035 |
STRO5-8042 |
STNF2-8042 |
| Membrane sheet type |
RO3 |
RO5 |
NF2 |
| Effective membrane area (m2) |
25 |
27 |
27 |
| Construction * |
Spiral Wound Element with GRP Outerwrap,Brine Seal |
| Feed flux range (m3/h) |
5.5-12 |
5.5-12 |
| Recommend flux (m3/h) |
10 |
10 |
| Permeate flux ** (m3/d) |
23 |
24 |
25 |
| Nominal rejection ** (%) |
98.5 |
99.5 |
98.0 |
| Minimum rejection (%) |
97.5 |
99.0 |
96.0 |
| Feed spacer |
Special open type (ladder type) |
| Element Dry Weight |
18kgs |
| Max. element pressure drop (bar) |
1.0 |
1.0 |
| Max. operation pressure (bar) |
90 |
90 |
| Max. operation temperature (ºC) |
45 |
45 |
| pH continuous operation |
3-11 |
3-11 |
| pH CIP |
2-12 |
2-12 |
| Chlorine tolerance (ppm) |
≤0.1 |
≤0.1 |
Brine seal to be installed in flow direction on the low pressure side/element outlet side.
** RO3 test condition: 2,000mg/l NaCl solution at 15.5bar applied pressure, 15% recovery, 25ºC; RO5 test condition: 32,000mg/l NaCl solution at 55bar applied pressure, 8% recovery, 25ºC; NF2 test condition: 2,000mg/l MgSO4 solution at 7bar, 15% recovery, 25 ºC. There may have about ±15% change for individual module flow rate.
Performance specifications shown above are nominal values. Individual module permeate flow rate may vary based on inlet water condition.
Note: We could offer any membrane sheet to make ST membrane module, for example, STRO4-8035, STRO5-8035, STRO1-8042, STNF1-8042, etc.
Applications
Sea Water
Industrial Waste water
Traditional spiral wound RO/NF concentrates.
Landfill leachate
Spacer Tube (ST) Module for Waste Water Treatment/ DOW (Dupont) membrane sheet/ BW / SW/ NF membrane
Operation pressure: 75bar /90bar/120bar/ Cross refer: Rochem membrane
Why us?
1. Our Spacer Tube (ST) modules use high quality membrane sheet from USA.
(BW & SW membrane sheet), which can obtain a 99.5% rejection rate based on 120bar operation pressure.
2. We make membrane module in China, our cost is competitive.
3. We offer OEM service.
4. We have large production capacity so fast delivery.
5. Our ST module was used in the largest project in China, more than 2,000 pieces.
The performance is very good.
Audited Supplier 
){kind=link}