The TSE series is a full-size seawater RO membrane featuring ultra-high salt rejection and superior boron removal. It adopts nano-modified membrane material and optimized anti-fouling flow channel, enabling single-pass seawater desalination to meet drinking water boron standards, cutting system energy and investment costs. Available in 4040 and 8040 specifications, it boasts wide chemical tolerance, long service life and universal compatibility, widely applied in coastal desalination plants, islands, offshore platforms and industrial high-salinity water treatment.
TSE Series High Salt & High Boron Rejection Seawater RO Membrane
The TSE series is a full-size seawater RO membrane featuring ultra-high salt rejection and superior boron removal. It adopts nano-modified membrane material and optimized anti-fouling flow channel, enabling single-pass seawater desalination to meet drinking water boron standards, cutting system energy and investment costs. Available in 4040 and 8040 specifications, it boasts wide chemical tolerance, long service life and universal compatibility, widely applied in coastal desalination plants, islands, offshore platforms and industrial high-salinity water treatment.
Factory Direct Supply
Our factory owns a 100,000 ㎡ standardized dust-free production workshop, independent R&D expert team and over 100 water treatment invention patents. TSE series is a new generation high-performance seawater RO membrane independently developed for high-salinity seawater desalination projects, with core positioning of ultra-high salt rejection, excellent boron interception, strong high-pressure resistance and stable long-cycle operation. All products pass full performance testing in Class 100 clean workshop, manufactured complying with ISO 20466:2024 and NSF/ANSI 61 international standards, perfectly solving the industry pain point of insufficient boron removal of traditional seawater membranes.
Product Description
TSE series is spiral-wound nano-modified aromatic polyamide thin-film composite seawater reverse osmosis membrane, covering complete 4040 small-size and 8040 large-size full specifications to match distributed skid-mounted and large coastal desalination plants. It adopts precise nanoscale pore control & surface negative charge dual modification technology, optimizes 34mil thick biostatic wide feed spacer, effectively suppresses concentration polarization under 32000–35000mg/L high-salinity seawater.
Traditional seawater RO membranes struggle to remove tiny neutral boron molecules, requiring two-pass RO system to meet drinking water boron standards. TSE series achieves qualified boron index via single-pass desalination, cutting system investment and energy consumption by 20%. It can stably intercept sodium chloride, boron ions, heavy metals, colloids, microorganisms and organic pollutants in raw seawater, producing permeate water that meets WHO drinking water boron limit standard (<0.5mg/L). All semi-finished membrane sheets and finished elements are self-produced in-house, with consistent batch flux and rejection rate, serving as core membrane element for high-standard seawater desalination.
Technical Characteristics
1. Premium interception performance: Stabilized salt rejection ≥99.88%, minimum guaranteed salt rejection ≥99.75; stabilized boron rejection ≥93.5%, far exceeding conventional seawater membrane index
2. Standard test conditions: 32000mg/L NaCl +5mg boron solution, 5.52MPa(800psi) operating pressure, 25℃, single element recovery 8%, test pH=8
3. Full-size coverage: TSE-4040 (4 inch, effective area 86ft²/8.0㎡, standard flow 1850GPD/7.0m³/d); TSE-8040 (8 inch, effective area 400ft²/37.2㎡, standard flow 6600GPD/25.0m³/d)
4. Wide chemical tolerance: Continuous running pH 2.0–11.0; chemical cleaning pH 1.0–13.0, support acid & alkali alternate cleaning without membrane layer damage
5. Operating environment range: Working temperature 5℃–45℃, max withstand pressure 8.27MPa(1200psi)
6. Strict inlet control threshold: Max inlet SDI15 ≤5.0, inlet turbidity ≤1.0NTU, residual chlorine ≤0.1mg/L to avoid irreversible membrane oxidation
7. Anti-fouling flow channel: 34mil thick biostatic spacer eliminates dead zones, reduces algae & colloid adhesion, extends chemical cleaning cycle
8. Reinforced fiberglass shell: High mechanical strength, anti-pressure impact, supports multi-element series connection inside pressure vessels
Core Product Advantages
1. Single-pass reaches high boron standard, greatly reduces system cost
93.5% boron rejection realizes qualified drinking water without secondary RO treatment, cancels second-pass equipment, lowers pump power consumption, equipment investment and floor space cost by nearly 20% compared with ordinary seawater membrane systems.
2. Ultra-high desalination stability, long-term consistent water quality
Nano-modified polyamide separation layer with uniform nanopores, salt permeability reduced by over 50% vs traditional membranes. No obvious flux & rejection attenuation within 4 years of continuous operation, stable permeate TDS and boron concentration.
3. Excellent anti-fouling & long service life
Hydrophilic negative charge membrane surface repels charged contaminants electrostatically; thick wide flow channel weakens concentration polarization. With standard pretreatment, chemical cleaning interval reaches 8–10 months, normal service life 4–5 years.
4. Complete independent R&D & strict quality control
Supported by over 100 proprietary invention patents for membrane material modification. 100% full inspection of each finished element for flux, salt rejection, boron rejection and pressure resistance; NSF/ANSI 61 food-grade material, no toxic precipitation, safe for drinking water production.
5. Full-size matching, flexible system collocation
4040 small size for ships, islands, mobile emergency desalination skids; 8040 large size for coastal large-scale desalination plants. Universal standard dimension compatible with all mainstream domestic & imported membrane housings, easy replacement for old systems.
Wide Application Fields
Municipal Coastal Large-Scale Seawater Desalination Plants
Main raw water treatment core membrane for coastal city water supply, single-pass process meets national drinking water boron limit, simplifies system flow and cuts daily operation power cost.
Island & Offshore Platform Fresh Water Supply
Compact TSE-4040 fits narrow cabin space of fishing boats, yachts, offshore oil rigs; stably treats 35000mg/L high-salinity seawater to produce domestic fresh water for long-term offshore operation.
High-standard Drinking Water Desalination Projects
Tourist resort, coastal villa centralized water supply, portable emergency desalination equipment for disaster relief, directly output drinking water compliant with WHO boron control standard.
Industrial High-Purity Water Pre-desalination
Pharmaceutical, electronic semiconductor high-purity water pretreatment, marine biological laboratory seawater purification, accurately control boron content to meet industrial production strict index requirements.
High-Salinity Industrial Wastewater Concentration & Reuse
Mine brine, high-salinity chemical wastewater deep desalination, recover fresh water resources while removing boron salt impurities to reach discharge standard.
Marine Aquaculture Water Treatment
Marine ranch circulating water purification, remove excess salt and boron elements to stabilize aquaculture water environment.
Frequently Asked Questions
Q1: What is the biggest advantage of TSE series compared with ordinary seawater RO membranes?
A1: Core highlight is ultra-high boron rejection ≥93.5%. Most common seawater membranes only reach 90–92% boron removal and require two-pass system, while TSE series achieves standard water quality via single pass, saving overall project cost and energy consumption.
Q2: What seawater salinity range is TSE series applicable to?
A2: Designed for standard seawater with TDS 32000–35000ppm, suitable for all natural coastal seawater working conditions.
Q3: What is the service life of TSE seawater membrane under standard operation?
A3: With complete pretreatment, regular cleaning and pressure standardized control, service life reaches 4–5 years; overpressure or unqualified inlet water will shorten service life sharply.
Q4: How long is the chemical cleaning cycle of TSE series?
A4: When inlet SDI ≤5.0 and raw water turbidity meets standard, cleaning cycle is 8–10 months, longer than conventional seawater membranes.
Q5: Can TSE series replace old imported seawater membranes directly?
A5: Yes, TSE-4040 / TSE-8040 adopt universal standard dimensions, fully compatible with original membrane housings without system transformation.
Other related links:
High-Rejection Brackish Water Replacement RO Membrane Element
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