Electrochlorination Systems — Saudi Arabia

Electrochlorination Systems Supplier Saudi Arabia — OSEC On-Site Hypochlorite Generation & Seawater Treatment Systems In Stock

Gulf Union Ozone supplies a complete range of electrochlorination systems for on-site sodium hypochlorite generation for seawater biofouling control, potable water disinfection, and process water treatment across Saudi Arabia. Our electrochlorination portfolio covers once-through seawater OSEC units with titanium mixed metal oxide (MMO) electrodes producing 0.6–0.8% NaOCl in situ by electrolysis of Red Sea and Arabian Gulf seawater — eliminating chlorine gas cylinder handling for power plant and desalination intake biofouling control, brine electrochlorination systems using 3.5% NaCl electrolyte for higher-concentration NaOCl production for water treatment facilities, dilute brine on-site hypochlorite generation for potable water and swimming pool disinfection without chlorine gas, high-concentration OSEC systems producing 12–15% NaOCl solution for storage and distribution, compact skid-mounted packaged systems at 50–200 kg Cl2 equivalent per day, and large-scale plant systems from 200 to over 1,000 kg Cl2 per day. Titanium MMO electrode life exceeds 10 years in service. Hydrogen gas detection and NFPA 820 ventilation mandatory for all installations. Standards: IEC 60335-2-59, NFPA 820 hydrogen gas management, IMO MARPOL Annex VI for seawater biofouling. Applications: Saudi Aramco seawater intake biofouling control, SWCC desalination plant intakes, power plant cooling water systems. ISO 9001:2015 certified (CR 4030570569). Stocked in Jeddah.

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Electrochlorination systems and OSEC on-site hypochlorite generation for seawater biofouling control and potable water treatment in Saudi Arabia — Gulf Union Ozone Jeddah
StandardsIEC 60335-2-59 · NFPA 820 H&sub2; Ventilation · IMO MARPOL Annex VI · ATEX Zone Classification
ElectrodesTitanium Substrate · MMO (Ruthenium/Iridium Oxide) Coating · >10 Year Operating Life
Range5–1,000+ kg Cl&sub2;/day · OSEC Seawater / Brine / Skid-Mounted / Plant Scale
QualityISO 9001:2015 — Jeddah Warehouse · Saudi Nationwide Delivery
Electrochlorination System Categories

Product Types in Stock

Gulf Union Ozone carries six electrochlorination and on-site hypochlorite generation system types for the full range of Saudi Arabia industrial, municipal, and marine applications — from compact skid-mounted potable water disinfection units to large-scale seawater OSEC installations for power plant and desalination intake biofouling control.

Type 01

Once-Through Seawater OSEC (Power Plant Intake Biofouling)

Once-through seawater electrochlorination (OSEC) systems for continuous in situ sodium hypochlorite generation from direct seawater electrolysis — the established technology for biofouling control at power plant seawater cooling water intakes, desalination plant intakes, and SWCC facilities on the Red Sea and Arabian Gulf coast of Saudi Arabia. Seawater from the intake screen passes through the electrolyser cells at a controlled flow rate; DC current (typically 4–6 V cell voltage) is applied across titanium plates coated with mixed metal oxide (MMO — ruthenium oxide RuO2 and iridium oxide IrO2 catalytic layer on titanium substrate) causing electrolysis of dissolved NaCl: at the anode, Cl2 is produced which immediately reacts with water to form HOCl and NaOCl; at the cathode, H2 gas and NaOH are produced. The resulting NaOCl solution at 0.6–0.8 g/L is returned directly to the seawater intake duct, achieving 0.3–0.5 mg/L free chlorine residual in the bulk intake seawater — sufficient to prevent settlement and growth of mussels (Mytilus galloprovincialis, Perna perna — both present in Saudi waters), barnacles, algae, biofilm bacteria, and other marine organisms on heat exchanger tube sheets, traveling water screens, and pipework. Continuous low-dose dosing is preferred over intermittent shock chlorination to prevent organism acclimation. Electrode cell materials: pure titanium Grade 2 substrate; DSA (Dimensionally Stable Anode) MMO coating with guaranteed operating life exceeding 10 years in normal seawater service; no graphite or platinum group metal anodes. Hydrogen gas management: integral H2 dilution duct with forced ventilation; H2 concentration sensor (ATEX rated, 4–20 mA output); interlock to trip power supply on H2 alarm exceeding 25% LEL. ATEX Zone 1 electrical enclosures for H2 hazardous area near electrode cell vents. DC power supply: transformer-rectifier with thyristor regulation, 3-phase 380–415V AC input, variable DC output for capacity control. Output capacity: 5 kg Cl2 equivalent/day (small) to 1,000+ kg Cl2/day (large plant). Applications: Saudi Aramco offshore and onshore seawater intake biofouling control, SWCC Yanbu and Jubail desalination intake chlorination, Marafiq power plant cooling water, private desalination and power plants on the Saudi Red Sea and Arabian Gulf coast.

Type 02

Brine Electrochlorination (High Efficiency, 3.5% NaCl)

Brine electrochlorination systems using a prepared saturated or semi-saturated sodium chloride (NaCl) brine solution — typically 30–35 g/L (3.0–3.5%) NaCl — as the electrolyte feed to titanium MMO electrode cells, producing a sodium hypochlorite solution at 0.8–1.2 g/L (0.08–0.12% NaOCl) which is collected in a storage tank for metered dosing to the target water treatment point. The higher NaCl concentration of brine electrolyte (approximately 8–16 times the NaCl available in seawater) results in higher current efficiency at equivalent electrode area and lower specific energy consumption per kg Cl2 equivalent produced, typically 4.0–5.5 kWh/kg Cl2 for brine systems versus 4.5–7.0 kWh/kg Cl2 for seawater OSEC. Brine is prepared from industrial-grade NaCl salt (99.5% purity, food-grade or technical grade) dissolved in feedwater in a salt saturator vessel with recirculation pump; pre-filtered to below 1 µm before the electrode cell to prevent electrode surface fouling by suspended solids. Complete package: salt dissolving vessel and brine saturator, brine pre-filter, electrode cell assembly (titanium MMO plates, PVC frame, FRP cell housing), DC transformer-rectifier, NaOCl product collection tank (HDPE or FRP, UV-stabilised), level monitoring, and metering pump for controlled NaOCl dosing. H2 management: dedicated H2 extraction duct with forced ventilation fan, LEL detector, and power trip interlock. Applications: municipal water treatment plants in Saudi Arabia inland cities (Riyadh, Tabuk, Hail) where seawater is unavailable, industrial process water disinfection facilities, agricultural irrigation water disinfection schemes, food processing water treatment, and any application requiring stored NaOCl rather than direct dosing. Capacity range: 5–500 kg Cl2/day. Brine electrochlorination is particularly well-suited to municipal and industrial sites in Saudi Arabia served by tanker-delivered NaCl salt where the capital cost of a seawater intake pipeline is not justified.

Type 03

Dilute Brine System (Potable Water Treatment Facility)

Dilute brine on-site electrochlorination systems producing sodium hypochlorite at concentrations below 0.8% (less than 8 g/L NaOCl) for potable water disinfection at water treatment plants, pumping stations, storage reservoirs, and distribution network dosing points in Saudi Arabia — replacing the use and storage of commercially available 12–15% NaOCl solution (which degrades rapidly in Saudi Arabia's high ambient temperatures) or the hazardous transport and handling of liquid chlorine gas cylinders. Dilute brine systems use NaCl salt at 15–25 g/L concentration, below the threshold for NaOCl concentration that causes significant storage instability or H2O2 build-up. The dilute NaOCl product can be used immediately after production or stored for short periods (24–72 hours) with minimal degradation loss — unlike bulk 12% NaOCl which loses 3–5% effective chlorine per month at 25°C and much faster at Saudi Arabia's summer ambient temperatures above 40°C. System components: NaCl dissolving and dosing vessel, electrode cell (titanium MMO, compact cartridge or plate design), DC power supply, product tank (HDPE), and variable-speed dosing pump for proportional dosing to flow-paced disinfection. NSF/ANSI 60 certification (drinking water treatment chemicals) available for electrode cell and product chemistry for Saudi Arabia Ministry of Health drinking water system approvals. SASO 4637 dosing targets: maintain 0.2–0.5 mg/L free chlorine residual in the distribution network. Applications: municipal water supply pumping stations and booster stations in Saudi Arabia, rural water supply schemes, desalination plant post-treatment chlorination before municipal distribution, and hotel and residential development centralised potable water disinfection systems. Capacity: 1–100 kg Cl2 equivalent per day.

Type 04

High-Concentration OSEC (12–15% NaOCl, Storage & Transport)

High-concentration on-site electrochlorination systems designed to produce sodium hypochlorite at 12–15% NaOCl (120,000–150,000 mg/L available chlorine) — equivalent in strength to commercially purchased bulk liquid chlorine (bleach) — using membrane-assisted electrolysis cells or optimised high-concentration brine electrolyte at 200–270 g/L NaCl (fully saturated). High-concentration OSEC eliminates the supply chain, transport risk, degradation losses, and HSE liabilities associated with purchasing, transporting, and storing bulk 12% NaOCl from external chemical suppliers in Saudi Arabia — a particularly valuable option for remote locations or for facilities on Saudi Aramco or Ministry of Interior sites where external chemical vehicles require special access approval and contractor management. Membrane cell technology (similar to chlor-alkali membrane electrolysis) uses perfluorinated cation exchange membranes to separate anode and cathode compartments, preventing mixing of the NaOCl anolyte product with the NaOH catholyte and enabling high-concentration NaOCl production without the chlorate formation that limits conventional parallel-plate cells at high concentration. The high-concentration product is collected in a day-tank and may be transported internally within the facility to remote dosing points. System includes: saturated brine preparation circuit, membrane electrolysis cell, product cooling system (NaOCl degrades above 30°C — cooling is critical in Saudi Arabia ambient conditions), HDPE product storage tank with bunded containment, and dosing metering pump. H2 gas management and ATEX electrical zone classification as for all electrochlorination systems. Applications: major industrial facilities, petrochemical plants, water treatment utilities, and any Saudi Arabia site requiring on-site production of high-strength NaOCl for flexibility, security of supply, and elimination of chlorine gas or bulk liquid chlorine transport.

Type 05

Compact Skid-Mounted System (50–200 kg/day Cl&sub2;)

Pre-engineered, factory-assembled, skid-mounted electrochlorination systems in the 50–200 kg Cl2 equivalent per day output range — designed for fast site installation, minimal civil works, and rapid commissioning at Saudi Arabia industrial and municipal facilities. All major system components are mounted and pre-piped on a hot-dip galvanised steel or SS 304 structural skid frame: titanium MMO electrode cell assembly, DC transformer-rectifier with control panel, NaCl dissolving and brine preparation vessel (where brine electrochlorination is specified), HDPE product tank with agitator (for product mixing and concentration homogeneity), product dosing metering pumps (diaphragm type, PVDF wetted parts), H2 dilution ventilation fan, LEL H2 sensor and PLC alarm/interlock panel, and all interconnecting pipework and electrical wiring. Factory acceptance test (FAT) completed at the manufacturer's works before shipment — system is energised, chlorine production verified by titration, H2 detection confirmed, and all interlocks function-tested. Site installation is limited to: connection of process water or seawater inlet, NaOCl outlet dosing lines, electrical supply (3-phase 380V), and ventilation duct to external atmosphere. PLC control with HMI touchscreen: production rate setpoint (kg Cl2/day), real-time current and voltage monitoring, NaOCl tank level, flow rate, H2 alarm status, and fault log. SCADA/DCS 4-20 mA or Modbus RTU interface for remote monitoring from plant control room. Footprint: typically 2.5 m × 1.5 m × 2.0 m for a 100 kg Cl2/day skid. Applications: power plant cooling water intake, water treatment plant disinfection, industrial process water, swimming pool and leisure facility disinfection, agricultural water, and remote infrastructure projects throughout Saudi Arabia where site-fabricated systems are not practical.

Type 06

Large-Scale Plant System (200–1,000+ kg/day Cl&sub2;)

Large-scale electrochlorination plant systems for continuous high-output NaOCl generation at major Saudi Arabia power stations, national desalination plants, and large industrial water treatment facilities — engineered to order with electrode cell arrays in parallel and series configurations achieving total outputs from 200 kg Cl2/day to over 1,000 kg Cl2/day. Multiple electrode cell modules are arranged in parallel hydraulic and electrical configurations with individual cell isolation valves allowing online maintenance and electrode replacement without full system shutdown — critical for continuous 24/7 biofouling control at base-load power plants. DC power supply: multiple transformer-rectifier units (typically 1,000–6,000 A DC at 4–8 V per cell module) with individual cell current control for output regulation. Electrode cell design: horizontal or vertical parallel plate electrode stacks in polypropylene, PVDF, or FRP cell frames; inter-electrode gap 3–5 mm optimised for seawater or brine electrolyte; flow velocity optimised to sweep H2 bubbles from the electrode surface and prevent chlorate formation. Product storage: one or more large HDPE or FRP storage tanks (25–200 m³) providing buffer capacity for several hours of production, with product cooling if ambient temperatures exceed 30°C (essential in Saudi Arabia summer). Full process control and safety: DCS/PLC control with production rate setpoint from plant DCS, free chlorine analyser on dosing line, H2 LEL monitoring on all cell vent hoods, ATEX Zone 1 electrical for all equipment within H2 hazardous zones, secondary containment bunding for all NaOCl storage. Applications: Marafiq Jubail and Yanbu power and water utilities, SWCC national desalination plants, SEC (Saudi Electricity Company) coastal power stations, Saudi Aramco ras Tanura and Rabigh offshore platform seawater intake biofouling, and SABIC industrial complex utilities requiring continuous large-scale NaOCl production in Saudi Arabia.

Product Catalog

Complete Electrochlorination Systems Range — 26+ Products

All electrochlorination systems supplied with factory acceptance test (FAT) records, electrode data sheet (titanium grade, MMO coating specification and rated life), transformer-rectifier calibration certificate, H2 detection system test record, and full IOM manual. ISO 9001:2015 QMS (CR 4030570569).

Type / System Output (kg Cl&sub2;/day) Feedwater / Electrode NaOCl Concentration Application
Seawater OSEC — Micro Pilot Unit (Trials & Small Systems) 1–5 kg Cl&sub2;/day Direct seawater; titanium MMO electrodes; 4–6 V cell 0.6–0.8 g/L NaOCl in situ seawater Pilot testing, small marine intake biofouling, laboratory evaluation
Seawater OSEC — Small (Power Plant / Desalination Intake) 5–20 kg Cl&sub2;/day Direct seawater; Ti MMO; ATEX panel; H&sub2; vent 0.6–0.8 g/L NaOCl; 0.3–0.5 mg/L residual in intake Small power plant cooling water intake biofouling, private desalination Saudi Arabia
Seawater OSEC — Medium (50–100 kg Cl&sub2;/day) 50–100 kg Cl&sub2;/day Direct seawater; parallel electrode cell modules; Ti MMO 0.6–0.8 g/L NaOCl; direct dose to intake Medium power station or desalination plant seawater intake biofouling, Red Sea coast
Seawater OSEC — Large (100–500 kg Cl&sub2;/day) 100–500 kg Cl&sub2;/day Direct seawater; multiple parallel cell arrays; SCADA interface 0.6–0.8 g/L NaOCl; 0.3–0.5 mg/L intake residual Large power station or major industrial facility seawater intake biofouling Saudi Arabia
Seawater OSEC — Very Large Plant (500–1,000+ kg Cl&sub2;/day) 500–1,000+ kg Cl&sub2;/day Direct seawater; N+1 cell redundancy; DCS integration 0.6–0.8 g/L NaOCl produced; DCS flow-paced dosing SWCC national desalination plant, Marafiq Jubail/Yanbu, SEC coastal power Saudi Arabia
Brine Electrochlorination — Small (5–20 kg Cl&sub2;/day, Skid) 5–20 kg Cl&sub2;/day 3.5% NaCl brine; Ti MMO electrodes; salt dissolver included 0.8–1.2 g/L NaOCl product; HDPE day-tank Rural water treatment, agricultural irrigation disinfection, remote site Saudi Arabia
Brine Electrochlorination — Medium (20–100 kg Cl&sub2;/day) 20–100 kg Cl&sub2;/day 3.5% NaCl brine; multiple Ti MMO cells; brine filter included 0.8–1.2 g/L NaOCl; HDPE storage tank with agitator Municipal water treatment, industrial process water disinfection, Saudi Arabia inland
Brine Electrochlorination — Large Industrial (100–500 kg Cl&sub2;/day) 100–500 kg Cl&sub2;/day 3.5% NaCl brine; parallel cell banks; SCADA; DCS 0.8–1.2 g/L NaOCl; large FRP storage with secondary bund Large water treatment utility, industrial park, SABIC and ARAMCO inland facilities
Dilute Brine OSEC — Small Potable Water (1–10 kg Cl&sub2;/day) 1–10 kg Cl&sub2;/day 15–25 g/L NaCl; Ti MMO compact cell; NSF/ANSI 60 <0.8% NaOCl; immediate use or short storage Potable water pumping station, storage reservoir dosing, SASO 4637 Saudi Arabia
Dilute Brine OSEC — Medium Municipal (10–50 kg Cl&sub2;/day) 10–50 kg Cl&sub2;/day 15–25 g/L NaCl brine; Ti MMO; flow-paced dosing pump <0.8% NaOCl; HDPE tank; 0.2–0.5 mg/L residual target NWC municipal potable water distribution network disinfection, Saudi Arabia towns
High-Concentration OSEC — 12–15% NaOCl (Small, 10–50 kg Cl&sub2;/day) 10–50 kg Cl&sub2;/day Saturated NaCl brine; membrane cell; product cooling 12–15% NaOCl (120,000–150,000 mg/L avail. Cl) On-site production of bulk-strength NaOCl, eliminating supplier deliveries Saudi Arabia
High-Concentration OSEC — 12–15% NaOCl (Large, 50–200 kg Cl&sub2;/day) 50–200 kg Cl&sub2;/day Saturated NaCl; membrane electrolysis; cooling circuit 12–15% NaOCl; secondary containment bunded storage Major industrial facility — replaces bulk NaOCl transport; Saudi Aramco or SABIC site
Compact Skid-Mounted OSEC — 50 kg Cl&sub2;/day (Factory Assembled) 50 kg Cl&sub2;/day Seawater or brine; Ti MMO; PLC + HMI; ATEX panel 0.6–0.8 g/L (seawater) or 0.8–1.2 g/L (brine) Power plant intake biofouling, water treatment plant, compact skid installation
Compact Skid-Mounted OSEC — 100 kg Cl&sub2;/day (Factory Assembled) 100 kg Cl&sub2;/day Seawater or brine; parallel cell modules; Modbus SCADA 0.6–0.8 g/L or 0.8–1.2 g/L; HDPE storage tank Medium power station, industrial cooling water, swimming pool complex Saudi Arabia
Compact Skid-Mounted OSEC — 200 kg Cl&sub2;/day (Factory Assembled) 200 kg Cl&sub2;/day Seawater or brine; full skid with safety systems; DCS link 0.6–0.8 g/L or 0.8–1.2 g/L; large HDPE product tank Large industrial facility, Jubail industrial city, desalination pre/post treatment
Large-Scale Plant OSEC — 200–500 kg Cl&sub2;/day 200–500 kg Cl&sub2;/day Seawater; multiple parallel cell arrays; site-erected plant 0.6–0.8 g/L NaOCl; DCS flow-paced dose control SEC coastal power station, Yanbu desalination, large Saudi industrial facility
Large-Scale Plant OSEC — 500–1,000 kg Cl&sub2;/day 500–1,000 kg Cl&sub2;/day Seawater; N+1 cell redundancy; large TR units; DCS full integration 0.6–0.8 g/L NaOCl; large FRP product tanks with secondary bund SWCC major desalination intake, Marafiq Jubail power, Saudi Aramco coastal intake
Mobile / Trailer-Mounted OSEC Unit 20–100 kg Cl&sub2;/day Brine; trailer-mounted; self-contained power and controls 0.8–1.2 g/L NaOCl; self-contained day tank on trailer Emergency disinfection, temporary camp water supply, construction site, Saudi Arabia
Electrochlorination — Pool / Spa Saline Inline System 0.5–5 kg Cl&sub2;/day Pool water 3–5 g/L NaCl; inline Ti cell; variable power NaOCl produced in pool circuit; 1–3 mg/L free Cl residual Hotel and resort pool and spa disinfection — chemical-free chlorine Saudi Arabia
Electrochlorination — Irrigation Water Disinfection 5–50 kg Cl&sub2;/day Brine; Ti MMO; NSF/ANSI 60; drip irrigation compatible 0.8–1.2 g/L NaOCl dosed to irrigation mainline Agricultural drip irrigation disinfection, farm water, greenhouse growing Saudi Arabia
Transformer-Rectifier (DC Power Supply) Unit Matched to cell requirement 3-phase 380/415V AC input; thyristor-regulated DC output 0–500 A DC / 0–50 V DC; variable output; IP55 enclosure DC power supply for electrochlorination cells — replacement and new system supply
Titanium MMO Electrode Replacement Sets Matched to existing cell configuration Ti Grade 2 substrate; RuO2/IrO2 MMO coating; >10 year rated life OEM-equivalent or superior coating specification Electrode renewal for all OSEC systems — existing plant refurbishment Saudi Arabia
NaOCl Storage Tank — HDPE (1,000–50,000 L) Storage for all OSEC output capacities HDPE UV-stabilised; NaOCl rated; gravity vent; level gauge Up to 15% NaOCl; HDPE or FRP; secondary bunded containment NaOCl buffer storage for electrochlorination systems, Saudi Arabia water treatment
H&sub2; Gas LEL Detector — ATEX Rated (Zone 1) Point or line detector; 0–100% LEL range Catalytic bead or electrochemical sensor; 4–20 mA output ATEX II 2G IIB T3; IP66 housing; alarm at 10% and 25% LEL H&sub2; zone monitoring — mandatory safety system for all electrochlorination installations
NaOCl Dosing Metering Pump — PVDF Diaphragm 0.5–1,000 L/h adjustable stroke PVDF pump head and valves; PTFE diaphragm; 4–20 mA control Rated for up to 15% NaOCl; anti-siphon check valve included NaOCl chemical injection for all electrochlorination dosing systems Saudi Arabia
Free Chlorine Analyser — Online (4–20 mA, DCS Interface) 0–20 mg/L measurement range Amperometric or colorimetric; SS 316L flow cell; IP65 4–20 mA output; MODBUS interface; calibration with DPD standard Online residual free chlorine monitoring at dosing point — potable and process water
Why Us

Why Industrial Buyers in Saudi Arabia Choose Gulf Union Ozone for Electrochlorination Systems

⚠

Eliminates Chlorine Gas Cylinder Hazard — Safer On-Site Generation

OSEC electrochlorination produces sodium hypochlorite on site from seawater or salt — eliminating the HSE risks associated with liquid chlorine (Cl2 gas) cylinder transport, handling, and storage at Saudi Arabia facilities. There is no toxic gas release hazard: the maximum concentration of NaOCl solution produced is below 1% — classified as a non-hazardous irritant rather than a toxic industrial chemical. This is a critical safety improvement for Saudi Aramco and SABIC sites where chlorine gas cylinder inventories require Tier 2 process hazard analysis and dedicated emergency response planning.

⚡

Titanium MMO Electrodes: 10+ Year Operating Life

All electrochlorination systems supplied by Gulf Union Ozone use dimensionally stable anode (DSA) technology — ruthenium oxide and iridium oxide mixed metal oxide (MMO) catalytic coating bonded to Grade 2 titanium substrate — with a guaranteed operating life exceeding 10 years in Red Sea and Arabian Gulf seawater service at rated current density. This multi-year electrode life, combined with minimal moving parts, results in very low maintenance requirements and high system availability compared to chemical delivery systems requiring regular tanker access to remote Saudi Arabia sites.

📋

ISO 9001:2015 Certified

All electrochlorination systems are designed, assembled, and tested under ISO 9001:2015 quality management system (CR 4030570569). Factory acceptance test (FAT) records including NaOCl production verification (titration), H2 detection system test, interlock function test, and transformer-rectifier calibration are provided with every system. IEC 60335-2-59 and NFPA 820 compliance documentation, ATEX zone drawing, and H2 ventilation calculation report are supplied for Saudi Arabia regulatory and EPC project submission requirements.

🗺

Jeddah Stock & Saudi Nationwide Delivery

Compact skid-mounted electrochlorination units, replacement titanium MMO electrode sets, PVDF NaOCl dosing pumps, free chlorine analysers, LEL H2 detectors, and HDPE NaOCl storage tanks are stocked in Jeddah for immediate dispatch to water treatment and power generation facilities across all Saudi Arabia regions — Jubail, Yanbu, Riyadh, Dammam, Jizan, Madinah, and remote sites. ISO 9001:2015 certified (CR 4030570569). WhatsApp 966550988062 for urgent electrochlorination system or spare parts requirements.

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Also Stocked at Gulf Union Ozone

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Water Treatment Systems

Complete water treatment systems for Saudi Arabia — multimedia filtration, activated carbon, sedimentation, and packaged water treatment plants integrated with electrochlorination for intake pre-treatment and post-treatment disinfection in potable water and industrial process water applications.
Water Treatment

UV Disinfection Systems

UV water disinfection chambers and sterilizers to DVGW W294 and NSF/ANSI 55 Class A — used alongside or as an alternative to electrochlorination for potable water, wastewater reuse, and pharmaceutical water disinfection in Saudi Arabia with zero chemical byproducts.
Water Treatment

Chemical Injection Skids

Factory-assembled chemical injection skid packages for NaOCl, antiscalant, coagulant, and pH adjustment dosing — complements electrochlorination systems with engineered injection points, metering pumps, and flow control for Saudi Arabia water treatment plants.
Water Treatment

Dosing & Metering Pumps

PVDF diaphragm and peristaltic metering pumps for NaOCl and chemical dosing — stocked in Jeddah in all common capacities with 4–20 mA flow-paced control, anti-siphon check valves, and ATEX-rated options for hazardous area electrochlorination installations in Saudi Arabia.
Frequently Asked Questions

Electrochlorination Systems in Saudi Arabia — Common Questions

How does on-site electrochlorination (OSEC) work for seawater biofouling control in Saudi Arabia power plants and desalination plants?

On-site electrochlorination (OSEC) works by passing a DC electrical current through seawater flowing across titanium electrodes coated with mixed metal oxide (MMO — ruthenium oxide and iridium oxide), electrolyzing dissolved NaCl (approximately 22,000 mg/L in Red Sea and Arabian Gulf seawater) to produce sodium hypochlorite (NaOCl) directly in the flowing seawater at 0.6–0.8 g/L. The resulting NaOCl is dosed directly to the seawater intake at the screen or duct, achieving 0.3–0.5 mg/L free chlorine residual in the bulk intake seawater — sufficient to prevent biofouling by mussels, barnacles, algae, and biofilm bacteria on heat exchanger tube sheets, traveling water screens, and pipework. No chlorine gas handling, storage, or transport is required — hypochlorite is generated and dosed in situ. Continuous low-dose dosing is preferred over intermittent shock chlorination to prevent organism acclimation. A critical safety requirement is hydrogen gas management: H2 is produced at the cathode at approximately 0.0042 Nm3 per kg Cl2 equivalent, and NFPA 820 mandates ventilation design to maintain H2 concentration below 25% of LEL, with ATEX-rated electrical equipment in the H2 hazardous zone. Gulf Union Ozone supplies complete OSEC packages with integral H2 dilution, LEL monitoring, ATEX-rated enclosures, and full safety documentation for Saudi Aramco, SWCC, SEC, and Marafiq project standards.

In Summary

Electrochlorination systems generate sodium hypochlorite on-site from seawater or brine for biofouling control at SWCC seawater intake structures, Saudi Aramco offshore platform cooling water systems, and desalination plant pre-treatment. Gulf Union Ozone supplies electrochlorination package systems from 0.5 kg/day to 2,000 kg/day chlorine equivalent — covering SWCC Jubail-II plant scale down to individual pump station intake screens. Titanium MMO (mixed-metal oxide) coated anodes with ruthenium and iridium activation provide 5-year electrode life at standard seawater temperatures. Safety-critical hydrogen gas dilution, ventilation, and chlorine residual monitoring are integrated into Gulf Union Ozone electrochlorination packages.

What is the difference between seawater OSEC and brine electrochlorination for Saudi Arabia applications?

Seawater OSEC and brine electrochlorination both use titanium MMO electrodes to produce NaOCl by electrolysis of NaCl, but differ in feedwater salinity, NaOCl concentration, configuration, and target applications. Seawater OSEC uses raw seawater directly as the electrolyte — no salt preparation is required. The natural salinity of Red Sea and Arabian Gulf water (approximately 22,000 mg/L NaCl) is sufficient for electrolysis, producing NaOCl at 0.6–0.8 g/L concentration directly in the flowing seawater stream. This dilute hypochlorite is immediately dosed into the intake without storage — suitable for continuous biofouling control where large volumes of seawater are available. Brine electrochlorination uses a prepared NaCl solution at 3.5% (35 g/L NaCl) — approximately 16 times the NaCl of seawater — producing higher-concentration NaOCl at 0.8–1.2 g/L. The higher NaCl concentration improves current efficiency and allows a more compact electrode cell. Brine electrochlorination is used where stored NaOCl is needed, seawater is not continuously available, or the facility is inland. Salt (industrial NaCl) dissolvers and brine preparation tanks are required. Both systems produce hydrogen gas and require ATEX ventilation. For Saudi Arabia inland water treatment plants and municipal facilities far from the sea, brine electrochlorination with NaCl salt supply is the practical OSEC configuration.

In Summary

SWCC and Saudi Aramco electrochlorination system specifications follow NACE RP0176 for offshore corrosion control and SAES-L-132 for cooling water chemistry at Saudi Aramco facilities. Gulf Union Ozone electrochlorination packages are designed to produce 0.2 to 2 ppm free chlorine residual at the discharge point, meeting Saudi Aramco GI-0375 cooling water chemistry limits. Automatic dosing based on ORP (oxidation-reduction potential) or residual chlorine analyser feedback eliminates manual dosing and reduces chemical consumption. Remote monitoring via Modbus and PROFIBUS communication for integration into the plant DCS is standard on all packages above 10 kg/day capacity.

What safety systems are required for electrochlorination systems in Saudi Arabia?

Electrochlorination systems in Saudi Arabia require safety systems addressing two primary hazards: hydrogen gas generation and NaOCl solution storage. Hydrogen gas is produced at the cathode at approximately 0.0042 Nm3 per kg Cl2 equivalent — for a 100 kg Cl2/day system, approximately 0.42 Nm3/hour of H2. NFPA 820 requires that H2 concentration be maintained below 25% of the lower explosive limit (LEL = 4% H2 in air), so the electrolyser room must stay below 1% H2 vol. Mechanical ventilation with minimum 12 air changes per hour — inlet low on the floor, exhaust high on the ceiling (H2 is lighter than air) — is mandatory. LEL monitors positioned in H2 accumulation zones, connected to a PLC interlocking ventilation fans and tripping power on H2 alarm exceeding 25% LEL, are required. Electrical installations within the H2 hazardous zone (ATEX Zone 1 — within 1 metre of H2 vent discharge) must use explosion-proof ATEX IIB T3 equipment per IEC 60079. NaOCl storage tanks must be HDPE or FRP, UV-stabilised, fitted with secondary containment bunding for 110% of largest tank volume, vented to atmosphere, and cooled below 30°C — NaOCl degradation and gas evolution accelerate sharply above 30°C in Saudi Arabia's summer ambient temperatures. Anti-siphon check valves on all dosing injection lines prevent process water back-flow into NaOCl storage. SASO chemical storage regulations apply to all NaOCl installations. Gulf Union Ozone supplies complete safety packages with LEL monitors, ATEX-rated enclosures, H2 ventilation systems, bunded NaOCl storage tanks, and anti-siphon dosing check valves for Saudi Arabia electrochlorination installations.

In Summary

Package electrochlorination systems for new NEOM Sindalah Island and Red Sea Project coastal resort desalination are being specified to EPC contractors currently in procurement. Gulf Union Ozone supplies compact modular systems suitable for container-mounted installation at remote coastal sites — self-contained with seawater feed pump, filter, transformer-rectifier, electrolytic cell modules, hydrogen dilution fan, and hypochlorite storage tank in a single 20-foot container. Tropical-rated electrical enclosures to IP55 and Type 3R for coastal salt-air environments. CE and UL marked electrical components throughout.

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Request an Electrochlorination Systems Quotation

To receive a fast quotation, provide: system type (seawater OSEC / brine electrochlorination / dilute brine / high-concentration / skid-mounted), required NaOCl output (kg Cl2 equivalent per day), feedwater type (seawater — specify TDS and location / brine — NaCl availability), installation type (skid-mounted / site-erected), H2 ventilation provision (existing or to be designed), ATEX zone requirements, and delivery location in Saudi Arabia.

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Recent Deliveries

  • • OSEC electrochlorination system (50 kg/day Cl&sub2; equivalent) for seawater intake biofouling control at a Jubail power plant, 2026
  • • On-site hypochlorite generation for a municipal swimming pool complex in Riyadh, 2026
  • • Saline water electrochlorination for potable water disinfection at a remote desalination facility in Yanbu, 2026

CR 4030570569 | ISO 9001:2015 | Jeddah, Saudi Arabia  —  Saudi Aramco vendor compliance · SAEP-347 credentials

Technical content reviewed by Gulf Union Ozone's Engineering Team, Jeddah — 2026

Inventory updated: September 2026

In Summary

Gulf Union Ozone electrochlorination supply and service coverage across Saudi Arabia: Jubail and Dammam (SWCC Arabian Gulf plants) 48-72 hours, Al Khobar 72 hours, Yanbu (Red Sea desalination) 72 hours from Jeddah, Riyadh 72-96 hours, Tabuk and Jizan coastal locations 96 hours. Electrode replacement kits and transformer-rectifier spare parts are stocked in Jeddah for rapid maintenance response. Technical service engineers are available for commissioning, troubleshooting, and annual maintenance of electrochlorination systems across all Saudi industrial and coastal sites. All packages supplied with ATEX or IECEx Zone 1 certification for coastal hazardous-area classified installations.