Engineered skid packages and containerized systems ready for harsh operating environments, heavy hydrocarbon loading, and stringent effluent parameters.
Integrated multi-stage decanting, flocculation, and high-shear mechanical separation for heavy drilling muds, bentonite slurries, and workover waste fluids.
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Specialized membrane softening and DTRO concentration skid engineered to process heavy slickwater, high-chloride brine, and dissolved hydrocarbons up to 150,000 mg/L TDS.
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Continuous electrodeionization paired with double-pass RO for high-pressure boiler makeup water, petrochemical steam loops, and precision electronics washing (<0.1 µS/cm).
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Ruggedized 20ft/40ft insulated containerized SWRO system equipped with isobaric energy recovery, sub-zero heating, and integrated PLC controls for remote deployment.
View Technical SpecsA comprehensive examination of regulatory pressures, discharge bylaws, and cross-border engineering models bridging Ontario manufacturing hubs with global oilfield asset management.
The Greater Toronto Area (GTA) and Southern Ontario represent one of North America's most concentrated industrial and manufacturing corridors. While Toronto itself is globally recognized as the financial and engineering hub housing tier-one EPC corporations—including Hatch, Stantec, and AtkinsRéalis—it serves as the headquarters for critical capital-equipment procurement across energy, petrochemical refining, automotive coating, and specialty chemical synthesis. In parallel, Ontario’s aggressive environmental stewardship under the Ontario Ministry of the Environment, Conservation and Parks (MECP) and municipal municipal sewer bylaws—most notably the City of Toronto Sewers By-law (Toronto Municipal Code Chapter 681)—has established some of the strictest limits on industrial wastewater discharge on the continent.
Traditional industrial waste management strategies that relied upon heavy dilution, municipal sewer off-take surcharges, or commercial liquid waste hauling to deep-well facilities are rapidly encountering systemic bottlenecks. Toronto By-law 681 enforces rigorous limits: Total Dissolved Solids (TDS) capped at 1,500 mg/L for sanitary sewers, Chlorides at 1,500 mg/L, Sulfates at 1,500 mg/L, and stringent thresholds on Biochemical Oxygen Demand (BOD), Total Suspended Solids (TSS), and heavy metals. Facilities exceeding these baseline thresholds face exponential surcharges, escalating compliance orders, or immediate revocation of discharge permits.
Simultaneously, Canadian oil and gas operators operating out of Calgary and Toronto executive suites face identical pressures in Western Canadian sedimentary basins (WCSB) and international assets in the Middle East and Central Asia. The massive production volumes of Produced Water (often ranging from 3 to 10 barrels of water per barrel of crude oil produced) and hydraulic fracturing flowback fluids present high salinity (30,000 to over 200,000 mg/L TDS), hazardous aromatic hydrocarbons (BTEX), scale-forming divalent cations ($Ca^{2+}, Mg^{2+}, Ba^{2+}, Sr^{2+}$), and dispersed oils. The transition toward Zero Liquid Discharge (ZLD) and High-Salt Brine Valorization has shifted from an optional ESG checkbox into an operational imperative to secure water security and lower lifting costs.
A rigorous engineering breakdown of Tongjie’s hybrid membrane-thermal flowsheet designed for challenging oilfield brines and industrial high-salt wastewater.
Eliminating free, dispersed, and emulsified hydrocarbons is vital to protect downstream polymer membranes. Tongjie incorporates gas flotation (IGF/DAF) units paired with micro-bubble coalescence and walnut shell media filtration. For refractories, ceramic ultrafiltration (CUF) with silicon carbide (SiC) or tubular membranes removes oil down to < 5 mg/L and TSS to < 1 mg/L, unaffected by hydrocarbon shocks.
High calcium, magnesium, barium, strontium, and silica levels lead to catastrophic scaling under high-pressure filtration. Using automated stoichiometric lime-soda ash dosing, caustic precipitation, and tube settlers with dynamic sludge recycling, we selectively lower total hardness to < 50 mg/L as $CaCO_3$ and soluble $SiO_2$ to < 10 mg/L prior to primary membrane desalinators.
Standard spiral-wound elements fail under the osmotic pressures of high-salinity brines. We deploy Disc Tube Reverse Osmosis (DTRO) modules operating up to 90–160 bar. Open-channel feed spacers and narrow hydrodynamic paths create intense turbulence, preventing membrane fouling and scaling while concentrating brines up to 120,000–140,000 mg/L TDS before thermal processing.
Falling-film evaporators driven by titanium centrifugal vapor compressors recycle latent condensation heat, decreasing electrical power consumption down to 25–45 kWh/m³ (compared to >600 kWh/m³ equivalent for traditional multi-effect thermal systems). Metallurgy options include Titanium Gr. 2, Hastelloy C-276, and Super Duplex 2507 for complete chloride stress crack immunity.
The final liquid elimination stage concentrates slurry past the saturation boundary into stable crystal growth regimes. An axial-flow recirculation pump propels brine through a submerged heat exchanger into a vacuum flash separator. Salts precipitate without heat exchanger surface fouling, feeding directly into a decanter centrifuge to produce dry, landfill-ready cake or industrial sodium chloride.
Equipped with Allen-Bradley, Siemens, or Schneider PLCs with industrial cloud-linked telemetry. Integrated software continuously logs mass-energy balance, recalculates antiscalant dosing from real-time conductivity and temperature sensors, and alerts plant operators to early scaling, enabling unmanned or single-technician facility management.
Measured operational parameters across typical heavy oilfield produced water, frac flowback, and chemical brine installations before and after Tongjie treatment trains.
| Water Parameter | Raw Produced Water (Feed) | Post Pretreatment (DAF+Soft) | Post DTRO Concentration | Permeate / Distillate (Final) | Toronto Bylaw 681 Limit |
|---|---|---|---|---|---|
| Total Dissolved Solids (TDS) | 45,000 – 160,000 mg/L | 42,000 – 150,000 mg/L | 110,000 – 180,000 mg/L | ≤ 150 mg/L | 1,500 mg/L |
| Free & Emulsified Oil | 150 – 1,200 mg/L | ≤ 5.0 mg/L | Non-detectable | ≤ 0.5 mg/L | ≤ 15 mg/L |
| Total Suspended Solids (TSS) | 200 – 2,500 mg/L | ≤ 2.0 mg/L | ≤ 0.5 mg/L | ≤ 1.0 mg/L | 350 mg/L |
| Total Hardness ($Ca^{2+}, Mg^{2+}$) | 3,500 – 15,000 mg/L | ≤ 40 mg/L | Brine purge reject | < 2.0 mg/L | Not specified |
| Chemical Oxygen Demand (COD) | 1,200 – 8,500 mg/L | 350 – 900 mg/L | Concentrated to MVR | ≤ 30 mg/L | ≤ 1,000 mg/L |
| Chloride ($Cl^-$) | 25,000 – 95,000 mg/L | 25,000 – 95,000 mg/L | 70,000 – 115,000 mg/L | ≤ 50 mg/L | 1,500 mg/L |
| Barium & Strontium | 25 – 450 mg/L | ≤ 1.0 mg/L | Eliminated | Non-detectable | Varies (Trace) |
How international EPC contractors in Toronto capitalize on precision Shanghai fabrication while meeting Canadian pressure piping and electrical safety statutes.
Sourcing industrial ZLD equipment domestically in North America frequently presents extended lead times (often 50–70 weeks) and inflated capital outlays driven by scarce skilled labor and structural supply backlogs. Shanghai Tongjie utilizes an integrated 18,000 m² modern manufacturing hub equipped with automated orbital welding, advanced robotic plasma cutting, and in-house ASME-qualified pressure vessel fabrication shops.
By controlling procurement channels for exotic alloys—including Titanium Gr. 2/12, Hastelloy C-276, and Super Duplex 2507—we maintain material traceability under full EN 10204 3.1 certification. Clients achieve a 35% to 50% CAPEX reduction while shortening project delivery windows by up to 4 months through fully modularized skid fabrication.
Exporting industrial machinery into Ontario requires meticulous alignment with local safety authorities. Tongjie’s engineering teams routinely design and certify equipment packages compliant with Technical Standards and Safety Authority (TSSA) mandates:
Deployment profiles illustrating how high-salt wastewater treatment and ZLD technologies integrate into major Ontario manufacturing and resource processing facilities.
Installed across downstream chemical processors in the Greater Toronto Area and the Sarnia chemical valley. Applications address spent caustic streams, cooling tower blowdown descaling, and high-sulfate amine wash purge, eliminating surcharge liabilities under Ontario Regulation 560/94 (Effluent Monitoring and Effluent Limits).
Serving automotive manufacturing lines along the Highway 401 corridor (Oshawa, Oakville, Windsor). Treats phosphate conversion coatings, heavy-metal electroplating rinses, and electrophoretic painting effluents via DTRO and crystallization, achieving closed-loop rinse water reuse.
Designed for biotechnology and active pharmaceutical ingredient (API) formulation facilities across Mississauga and Markham. High-temperature MVR units eliminate organic biologically active remnants, heavy salts from synthesis, and solvents, yielding water that meets USP clean steam make-up criteria.
Northern Ontario mining operations (Sudbury, Timmins) utilize mobile skid systems to treat hyper-saline acid mine drainage (AMD) and reverse osmosis reject. The process recovers clean industrial process water while isolating gypsum, heavy metal cakes, and commercial sodium salts.
Large-scale food processing and dairy cheese whey concentration in Southwestern Ontario require salt recovery from brine chillers and clean CIP (Clean-In-Place) caustic reuse, drastically reducing municipal sewer biochemical loading and wastewater discharge volumes.
Engineered for commercial fluid treatment hubs servicing unconventional oil and gas operations. Modular, trailer-mounted DTRO packages process variable trucked flowback from multi-well pads, producing sweet reinjection water with < 5 mg/L oil and solids.
In-depth engineering answers addressing system sizing, pressure equipment approvals, lifecycle economics, and pilot test validation.
Explore our specialized range of high-salinity brine concentrators, ultrapure pharmaceutical water systems, containerized SWRO units, and deoxygenation modules.
Sanitary stainless steel 316L double-pass RO unit with ozone and UV sterilization designed for Ontario beverage and dairy production.
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Mobile decanter centrifuge and chemical dosing unit configured for rapid hydrocarbon/bentonite cake separation and filtrate reuse.
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Factory-direct industrial RO+EDI skid producing ultra-low conductivity process water for steam turbine generation and chemical plants.
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Fully self-contained 40ft container system featuring high-pressure duplex pumps, isobaric ERDs, and automated remote SCADA monitoring.
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Advanced hollow fiber contactor degassing membrane removing dissolved oxygen down to < 5 ppb to prevent oilfield wellbore and pipe corrosion.
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Full 316L orbitally welded multi-effect distillation and RO-EDI platform designed for bio-pharma formulation with complete DQ/IQ/OQ validation.
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Osmosis-assisted membrane and DTRO system that concentrates challenging brines past 180,000 mg/L TDS prior to final crystallizer entry.
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Continuous sanitary generation skid equipped with thermal sanitization, TOC online analyzer, and sanitary circulation storage skids.
View Technical SpecsContact our engineering specialists in Shanghai and Toronto for comprehensive water analysis review, membrane projection simulations, and custom P&ID proposals tailored to your facility.
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