Primary Membrane & Deoxygenation Skids for Algerian Projects
Engineered to comply with Algerian Executive Decree No. 06-141 for effluent standards, featuring heavy-duty anti-fouling components for Sonatrach-grade and local industrial facilities.
Algeria's Industrial Water Stress: The ZLD Imperative
Navigating acute water scarcity, rigorous Sonatrach environmental mandates, and fragile Saharan aquifer protection frameworks through high-recovery Chinese engineering.
Subterranean Aquifer Depletion & Strict Discharge Law
Algeria sits firmly in the UN water poverty zone, possessing less than 500 m³ of renewable freshwater per capita annually. Across the industrial hubs of Arzew, Skikda, and Hassi Messaoud, manufacturers and petrochemical complexes have historically depended on coastal seawater desalination or groundwater extracted from the deep Continental Intercalaire and Complexe Terminal aquifers.
Under Algerian Executive Decree No. 06-141 and Water Law No. 05-12, the Algerian Ministry of Hydraulics (Ministère des Ressources en Eau) and the National Agency for Integrated Water Resources (AGIRE) have instituted stringent penalties on industrial discharges with high total dissolved solids (TDS > 2,000 mg/L) and chemical oxygen demand (COD). Discharging untreated fracturing flowback or refinery reject brine into chotts or desert depressions is now prohibited, rendering Zero Liquid Discharge (ZLD) not an option, but a regulatory prerequisite for operating licenses.
Sonatrach Downstream Expansion & High-Salinity Brines
With Sonatrach’s mega-investments in downstream petrochemical units—including the STEP polypropylene complex in Arzew, ammonia-urea expansions, and gas compression stations along the Medgaz pipeline—water demand for cooling towers and high-pressure steam boilers has spiked.
Cooling tower blowdown typically exhibits salinity concentrations of 8,000 to 25,000 mg/L TDS, loaded with silica, sulfates, and scale inhibitors. Conventionally treated using evaporation ponds—which suffer from massive land footprint requirements, ground liners tearing under intense North African UV radiation, and severe evaporation inefficiencies during the winter months—modern Algerian operators require compact, skid-mounted Mechanical Vapor Recompression (MVR) and Disc Tube RO (DTRO) systems to recover up to 98% of clean distillate for direct plant reuse.
Why Algerian Plants & EPCs Choose Tongjie China
Combining tier-one metallurgy, ISO/CE verified manufacturing, and tailored African desert engineering to reduce total cost of ownership by 35% to 50% compared to Western European vendors.
Severe Metallurgy & Anti-Corrosion
Algerian saline waters feature high chloride ions exceeding 35,000 mg/L coupled with corrosive hydrogen sulfide ($H_2S$) in oilfields. We fabricate wetted parts in Titanium Grade 2, 2507 Super Duplex Stainless Steel, and Hastelloy C-276, ensuring 20+ years of operation without pit corrosion or structural fatigue.
Plug-and-Play Containerized Skids
Remote desert locations like In Salah, Berkine, and Rhourde Nouss present severe civil engineering and installation hurdles. Our systems arrive 100% pre-piped, pre-wired, and Factory Acceptance Tested (FAT) in standard 20ft/40ft insulated containers, cutting on-site installation work by over 80%.
Low Energy Thermodynamic Design
Tongjie MVR systems utilize turbo compressors that recycle latent heat from secondary steam, cutting operational electricity consumption down to 20 - 35 kWh/m³, delivering huge OPEX reductions compared to conventional multi-effect distillation (MED) or multi-stage flash (MSF) plants.
Comprehensive Technology Comparison: ZLD & High-Salt Treatment
Evaluating operational parameters for Algerian refinery wastewater, fracturing flowback, and chemical brine concentration processes.
| Technology Stage | Feed TDS Range | Permeate / Distillate Quality | Key Process Advantages | Optimal Algerian Applications |
|---|---|---|---|---|
| Pretreatment + Tubular UF | 1,000 – 40,000 mg/L | SDI < 2.5, Turbidity < 0.2 NTU | Continuous oil-water separation, handles heavy suspended solids and organic shocks. | Produced water from Hassi Messaoud, refinery slop oils in Skikda. |
| High-Recovery SeaWater RO (SWRO) | 10,000 – 45,000 mg/L | TDS < 350 mg/L (Potable/Feed Grade) | Energy recovery turbines (>95% efficiency), low specific energy footprint (2.8 - 3.4 kWh/m³). | Arzew industrial water intakes, coastal thermal power plants. |
| Disc Tube RO (DTRO / STRO) | 40,000 – 120,000 mg/L | TDS < 1,000 mg/L | Open-channel hydraulics prevent membrane scaling and fouling; operable up to 120 bar. | RO reject concentration, landfill leachate in Algiers/Oran, chemical wastewater. |
| Osmosis-Assisted RO (OARO) | 80,000 – 160,000 mg/L | Brine concentrated up to 18% salt | Overcomes conventional hydraulic pressure limits using salinity gradient staging. | Phosphate mining wash water concentration in Tébessa and Djebel Onk. |
| MVR Evaporation & Crystallization | 120,000 – 260,000+ mg/L | Conductivity < 30 µS/cm (Recovered Water) | True Zero Liquid Discharge (ZLD); converts liquid brine into dewatered solid cake (NaCl / Na₂SO₄). | Final stage Sonatrach petrochemical blowdown, pharmaceutical parks in Sidi Abdellah. |
Algerian Field Scenarios & Modular Solutions
Proven engineering blueprints resolving multi-variable challenges across petroleum, manufacturing, and agro-industrial sectors.
Oilfield Produced Water Reinjection
Hassi Messaoud & Berkine Basins
Challenge: Hydraulic fracturing flowback and formation water containing up to 90,000 ppm TDS, emulsified crude oil, and barium/strontium scale formers.
Solution: Tongjie skid-mounted unit combining walnut shell filtration, ceramic microfiltration, and dual-stage DTRO. Delivers reinjection water with ≤5 mg/L hydrocarbons and ≤1 mg/L suspended solids.
Refinery Cooling Tower Blowdown ZLD
Arzew & Skikda Petrochemical Zones
Challenge: Massive daily volumes of hyper-saline blowdown loaded with corrosion inhibitors and biocide residues facing strict marine conservation prohibitions.
Solution: High-efficiency softening followed by Disk-Tube RO brine concentration and Titanium-constructed MVR falling film evaporators, recycling 98% pure boiler-grade distillate.
Phosphate & Mining Effluent Treatment
Bled El Hadba & Annaba Complex
Challenge: Heavy metals, fluorides, and hyper-sulfate acidic liquor generated during phosphate rock beneficiation and fertilizer synthesis.
Solution: Two-stage chemical precipitation, Lamella clarification, tubular ultrafiltration, and high-pressure NF/RO, regenerating clean process water while capturing dry phosphate sludge.
Comprehensive Procurement & Design Verification
Direct integration capabilities with international EPC contractors executing projects under Sonatrach, Sonelgaz, and Algerian government tenders.
Engineering Standards & Certifications
- Pressure Vessels & Piping: ASME Section VIII Div 1, ASME B31.3 process piping design.
- Electrical & Control Engineering: IEC 60947 compliance, Siemens S7-1500 PLC architecture, explosion-proof ATEX / IECEx certified field instruments for Zone 1/Zone 2 deployment.
- Factory Acceptance Testing (FAT): Hydrostatic testing at 1.5x design pressure, complete dynamic wet testing in Shanghai plant prior to container stuffing.
- Full Dossier Traceability: EN 10204 3.1 material certificates, welding dossier (WPS/PQR), NDT radiographic inspections, and operating manuals provided in French & English.
North African Desert-Proof Modular Design
- Ambient Temperature Tolerance: Up to +55°C operation with dual-circuit tropicalized HVAC and sand-filtration louver systems.
- Ingress Protection: Minimum IP65 protection rating on field enclosures; sandstorm dust suppression on air intakes.
- Logistics Convenience: Designed to standard ISO freight footprints for seamless road transport from Algiers, Oran, or Djendjen ports straight into Sahara oilfields.
- Remote SCADA Connectivity: Integrated 4G/Satellite telemetry for real-time membrane performance monitoring, automated cleaning alerts, and remote diagnostic backup from Shanghai engineering headquarters.
High-Efficiency Water Treatment & ZLD Systems
Explore our specialized membrane equipment and brine concentration solutions engineered for overseas industrial and utility installations.
Frequently Asked Questions by Algerian Project Teams
Direct technical clarifications on design limits, desert logistics, local commissioning, and international certifications.
Saharan groundwater from the Continental Intercalaire typically carries reactive silica levels between 40 to 90 mg/L, creating severe, irreversible silicate scaling on standard spiral-wound membranes. Tongjie designs incorporate high-pH silica solubilization stages or chemical softening (lime + soda ash + micro-sand ballast clarifiers) combined with Disc Tube Reverse Osmosis (DTRO). DTRO’s open-channel hydraulic geometry allows turbulent flow and high shear rates, preventing silica scaling up to 120 bar osmotic pressure.
Standard containerized skids (10 t/h to 100 t/h capacity) have an engineering and fabrication cycle of 60 to 90 days at our Shanghai facility. Shipping from Shanghai Port to major Algerian maritime terminals (Algiers, Oran, Skikda, or Djendjen) typically takes 30 to 38 days via direct Mediterranean carrier lines. Custom MVR evaporators requiring Titanium vessels take approximately 120 days.
Yes. All technical deliverables—including P&ID schematics, functional design specifications (FDS), electrical wiring diagrams, Operations & Maintenance (O&M) manuals, and Factory Acceptance Test (FAT) documentation—are provided in both French and English. Furthermore, our Siemens or Allen-Bradley HMI touch panels are fully localized with multi-lingual switching between French and English for Algerian field technicians.
We provide two operational pathways: 1) Deploying experienced Chinese field engineers to the Algerian project site (including deep southern desert regions) to oversee civil mechanical connection, electrical tie-in, cold commissioning, and wet startup; or 2) Providing real-time remote augmented-reality (AR) engineering guidance combined with local Algerian certified EPC contractors, supplemented by comprehensive operator classroom training.