Featured Produced Water Conditioning & Desalination Units
Engineered for upstream reinjection, high-salinity organic concentration, and oil-brine separation. Inspect our precision-fabricated export skids below.
Engineering Scope: Modern Oilfield Produced Water Conditioning
Produced water and hydraulic fracturing flowback fluids contain complex matrices of free, dispersed, and emulsified hydrocarbons, dissolved solids (TDS ranging from 15,000 to >180,000 mg/L), scale-forming divalent cations, and dissolved toxic gases. Conditioning this water for reinjection, subsurface disposal, or zero-liquid discharge (ZLD) requires integrated, multi-barrier separation technology.
Primary Hydrocarbon Separation
Incorporates corrugated plate interceptors (CPI), induced gas flotation (IGF), and coalescing walnut shell media filtration to drive free hydrocarbons below 20 ppm and knock down heavy suspended particulates without chemical overload.
Chemical Conditioning & Softening
Targeted stoichiometric dosage of lime, soda ash, and coagulants to precipitate silica (SiO2), barium sulfate (BaSO4), strontium, and total hardness (Ca2+/Mg2+), preventing severe irreversible scaling across downstream membrane elements.
High-Pressure DTRO & OARO Membranes
Disc Tube Reverse Osmosis (DTRO) and Osmosis-Assisted Reverse Osmosis (OARO) modules featuring open feed channels capable of handling high chemical fouling indices and operational hydraulic pressures up to 120 bar for high brine concentration.
Why Global Energy Operators Source from Our China Manufacturing Center
Tongjie integrates R&D, precision fabrication, skid modularization, and electrical automation under an ISO-certified production workflow in Jiading, Shanghai.
Full Supply-Chain Integration
Direct factory sourcing of Super Duplex 2507, 316L stainless steel, titanium grade 2 heat exchangers, and premium DOW/DuPont membranes drives a 30-40% CapEx reduction against European or North American skid assemblers without compromising component fidelity.
Pre-Engineered Containerization
Units arrive fully wired, plumbed, and pre-commissioned in standard DNV-certified offshore or standard ISO 20ft/40ft containers. Reduces site-level civil construction timelines from months to an expedited 15-day plug-and-produce integration period.
Factory Acceptance Testing (FAT) Rigor
Every conditioning train undergoes full hydrostatic pressure testing, dynamic hydraulic balancing, PLC/SCADA simulation, and automated fail-safe safety testing at our Shanghai factory prior to export crating.
Macro Industry Solutions: Technical Whitepaper Architecture
Systematic process trains engineered to navigate evolving water governance regulations, strict environmental protection limits, and extreme subterranean oilfield characteristics.
Reinjection Water Conditioning: Subsurface Integrity Architecture
In mature waterflood and enhanced oil recovery (EOR) reservoirs, low-permeability formations require permeate of exceptional physical and chemical clarity to prevent wellbore skin fouling and souring. Tongjie's conditioning system integrates advanced catalytic deoxygenation membrane contactors to suppress corrosion kinetics, alongside ceramic microfiltration (CMF) that achieves consistent effluent quality: Total Suspended Solids (SS) ≤ 1.0 mg/L, Median Particle Diameter < 1.0 μm, and Dissolved Hydrocarbon ≤ 5.0 mg/L.
Fracturing Flowback Recycling: Hydraulic Closed-Loop Operation
Unconventional shale gas and tight oil developments demand substantial hydration water per hydraulic fracturing stage. Our skid-mounted flowback treatment units neutralize residual friction reducers, borate-based crosslinkers, and biocides through advanced oxidation processes (AOP) combined with electrochemical destabilization. Treated water is returned to slickwater blending systems with total iron < 5 ppm and divalent ion stabilization, reducing raw freshwater acquisition costs by up to 85%.
High-Salinity Thermal ZLD Brine Concentration
Where environmental disposal guidelines prohibit deep-well disposal (Class II UIC) or surface discharge, Tongjie couples high-recovery DTRO membranes with Mechanical Vapor Recompression (MVR) falling-film evaporators and forced-circulation crystallizers. Heavy mother liquors are transformed into non-hazardous high-purity industrial sodium chloride or sodium sulfate crystals, recovering over 98% of produced wastewater as high-purity condensate for industrial boiler feed or agricultural reuse.
Comparative Performance Specifications Across Treatment Technologies
| Treatment Metric | Conventional Dissolved Air Flotation | Polymer Flocculation & Media Filtration | Tongjie Skid-Mounted DTRO Conditioning System |
|---|---|---|---|
| Hydrocarbon Efficiency | 15 – 30 mg/L residual | 10 – 20 mg/L residual | ≤ 5.0 mg/L Guaranteed |
| Suspended Solids (SS) | 10 – 25 mg/L | 5 – 10 mg/L | ≤ 1.0 mg/L Micronized |
| Salinity/TDS Removal | 0% (Physical only) | 0% (No demineralization) | 90% – 98.5% Membrane Desalination |
| Extreme Climate Tolerance | Limited (Requires civil cladding) | High freezing vulnerability | -40°C to +55°C Insulated Containerized Skids |
| Commissioning Cycle | 60 – 90 Days on site | 45 – 60 Days on site | ≤ 15 Days Direct Plug-and-Produce |
Localized Application Scenarios & Global Enterprise Demand
Engineered to handle varied geography, climate extremes, and stringent regulatory mandates across key global hydrocarbon basins.
Middle East Arid Operations
Designed for GCC nations facing extreme desert heat (+55°C ambient). Systems feature automated HVAC climate control, heavy-duty dust air intake filtration, and remote solar integration to conserve regional freshwater reservoirs.
Central Asia & Siberia Basins
Engineered for cold-climate regions like Kazakhstan and Western Siberia (-40°C). Includes insulated double-wall rockwool paneling, automatic glycol heat tracing, and heated piping galleries to prevent freeze-ups during shutdowns.
North American Unconventionals
Configured to satisfy North American EPA Class II injection constraints and seismic monitoring caps in basins like the Permian and Bakken. Systems focus on mobile, high-throughput recycling skids for hydraulic fracturing reuse.
Offshore FPSO & Platforms
Built to meet tight spatial layouts and stringent marine safety codes (ATEX / IECEx Zone 1/2). Systems feature compact structural skids with titanium plate heat exchangers and high-corrosion Super Duplex wetted parts.
Future Trends Driving the Produced Water Treatment Sector
Industry-wide technological shifts impacting international procurement strategies and engineering designs over the next decade.
Renewable-Powered Treatment Skids
Integration of distributed photovoltaic (PV) arrays and battery energy storage systems (BESS) directly with Variable Frequency Drive (VFD) high-pressure pumps, enabling off-grid field deployment with minimal carbon impact.
AI-Driven Predictive Membrane Maintenance
Edge computing platforms evaluate real-time flux decay, differential pressures, and water chemistry to automatically trigger anti-scalant dosing adjustments and Clean-in-Place (CIP) sequences before scaling occurs.
Selective Rare Mineral Harvesting
Modern zero-discharge processes are shifting from pure waste disposal toward valorization. Next-generation conditioning systems integrate selective ion-exchange and nanofiltration to recover high-value battery-grade lithium from hypersaline oilfield brines.
Frequently Asked Technical & Procurement Questions
In-depth technical answers addressing common engineering queries from EPC contractors, oilfield operators, and procurement managers.
What analytical water data is required to engineer a produced water conditioning system?
- Physical Properties: Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Temperature range, pH, Specific Gravity, and Turbidity (or Silt Density Index, SDI).
- Organic Loading: Free Oil & Grease (FOG), Total Petroleum Hydrocarbons (TPH), Chemical Oxygen Demand (COD), Biological Oxygen Demand (BOD), and volatile organics (BTEX).
- Inorganic Chemistry: Cation-anion balance with specific concentrations of Barium (Ba), Strontium (Sr), Silica (SiO2), Calcium (Ca), Magnesium (Mg), Iron (Fe), and Sulfates (SO4).
- Site Logistics: Available electrical service (voltage/frequency), footprint constraints, preferred modular layout (skid vs containerized), and product water targets.
How do Tongjie DTRO modules prevent fouling compared to conventional spiral-wound RO?
What metallurgies and materials are specified for high-chloride produced water environments?
- Low-to-Medium Salinity: 316L Stainless Steel with passivated welds.
- High Salinity (>35,000 mg/L TDS): Super Duplex Stainless Steel (2507 / UNS S32750) with PREN > 42.
- Extreme Brines & Thermal Distillation: Titanium Grade 2, Hastelloy C-276, or fluoropolymer-lined piping (PTFE/PVDF).
What international design standards and certifications govern Tongjie export skids?
How is unmanned remote monitoring and automated operation achieved on remote wellpads?
Industrial Water Conditioning & Zero-Liquid Discharge Inventory
Engineered high-salinity brine concentrators, ultrapure water generators, and high-recovery recycling equipment ready for international deployment.
