What information do you need to size a seawater RO or industrial water treatment system?

Send a recent raw water analysis (TDS, conductivity, hardness, silica, iron/manganese, SDI or turbidity, oil and suspended solids where relevant), feed water temperature range, required product water quality and daily capacity, target recovery, available power supply (voltage/frequency), site conditions and whether you prefer a skid or containerized layout. With this data our engineers prepare a process design, mass balance and equipment list.

How fast can a containerized seawater desalination plant start producing water?

Tongjie containerized seawater RO units are fully prefabricated, assembled and tested in our Shanghai factory before shipment. On arrival the unit only needs basic power, intake and product water connections, so commissioning is short and predictable, which suits emergency supply, remote islands, construction camps and decentralized permanent supply.

Can your oil and gas produced water system meet reinjection requirements?

Yes. The system combines oil removal, softening, disc tube reverse osmosis (DTRO) and concentration. Treated reinjection water reaches oil content of 5 mg/L or less and suspended solids of 1 mg/L or less, enabling zero-discharge reuse of fracturing flowback. The skid-mounted container design can be commissioned within about 15 days and supports unmanned operation with remote monitoring for sites such as the Middle East and Kazakhstan.

Do your pharmaceutical purified water systems support validation?

Our pharmaceutical water systems use pretreatment, precision filtration, RO and EDI, and are built to pharmaceutical engineering practice with online monitoring of conductivity, temperature and flow. Data is recorded and traceable, and documentation is prepared to support your validation and qualification activities.

Do you offer ODM/OEM water treatment equipment?

Yes. We supply ODM/OEM membrane systems for distributors, EPC contractors and equipment brands, including customized capacity, materials, control systems, container layouts, labeling and documentation.

Which certifications and qualifications does Tongjie hold?

Tongjie holds CE certification and ISO 9001, ISO 14001 and ISO 45001 management system certifications. The company is a National High-Tech Enterprise and Shanghai Specialized & Sophisticated Enterprise, holds Class II contracting qualifications in environmental protection engineering and in mechanical and electrical installation, and owns more than 38 invention and utility patents plus software copyrights.

Advanced Industrial Filtration Engineering

ODM Hydraulic Fracturing Flowback Factory & Suppliers

Precision-Engineered Membrane Desalination, High-Salinity DTRO Brine Concentration, and Zero Liquid Discharge (ZLD) Systems Built for Global Unconventional Oilfield Exploitation.

Industrial Produced Water Treatment Equipment

Pre-engineered containerized RO, high-recovery DTRO concentration, and zero-discharge evaporative units engineered directly by our Shanghai production plants.

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≤5 mg/L

Residual Oil Content

≤1 mg/L

Suspended Solids (SS)

15 Days

Rapid Modular Commissioning

38+

National Engineering Patents

Executive Summary: Engineering Paradigm in Fracturing Flowback & Produced Water

Unconventional hydrocarbon operations—predominantly hydraulic shale fracturing and deep tight gas extraction—face severe logistical and environmental bottlenecks due to immense hydraulic fracturing flowback fluids. A typical multi-stage fractured horizontal well injects upwards of 20,000 to 70,000 m³ of base fluid, carrying complex surfactant packs, friction reducers, biocides, and scale inhibitors downhole. Upon depressurization, between 15% to 65% of this volume returns as highly toxic, complex flowback, which progressively transitions into production water over the lifecycle of the well.

Managing this stream requires transitioning beyond traditional containment pits and deep well injection (Class II SWD). With seismic hazards, strict regulatory constraints, and high transportation expenses in hyper-arid shale plays (e.g., the Tarim Basin, the Permian Basin, Vaca Muerta, and Central Asian reservoirs), on-site closed-loop reclamation and Zero Liquid Discharge (ZLD) have evolved from an environmental obligation to an operational imperative. As a premier original design manufacturer (ODM), Shanghai Tongjie Environmental Protection Technology Co., Ltd. architects heavy-duty, containerized membrane systems capable of handling extreme total dissolved solids (TDS reaching 40,000 to 180,000 mg/L), erratic chemical oxygen demand (COD), and extreme turbidity.

Integrated Macro Flowback Treatment Train

A systematic, closed-loop process flow designed to decouple organic complexes, mitigate scaling ions, and maximize brine volumetric recovery.

Standard tubular reverse osmosis configurations rapidly foul when exposed to the polymer cocktails and polyvalent cations typical of flowback fluids. Our industrial ODM installations utilize a multi-barrier defense strategy engineered for continuous field operations under extreme climatic variances (-30°C to +50°C).

Stage 1: Primary Separation & Oxidation High-shear dissolved air flotation (DAF), electrocoagulation, and advanced Fenton/catalytic oxidation break emulsified crude droplets and cleave long-chain polyacrylamides (PAM), reducing polymer-induced membrane blinding.

Stage 2: Softening & Scale Abatement Chemical dosed soda-ash/caustic precipitation combined with tubular microfiltration (TMF) knocks down calcium, magnesium, barium, strontium, and silica to sub-saturation levels, safeguarding downstream high-pressure assets.

Stage 3: DTRO High-Pressure Concentration Disc Tube Reverse Osmosis (DTRO) modules operating up to 90–160 bar compress the fluid envelope. Open-channel feed spacers and hydrodynamically optimized fluid pathways prevent stagnant boundary layers and resist scaling.

Stage 4: Thermal ZLD & Crystallization Mechanical Vapor Recompression (MVR) evaporators and crystallizers treat residual DTRO reject brine, generating high-purity distillate for fracturing fluid re-blending and commercial mixed industrial salts (NaCl/Na2SO4).

Why Global Operators Source from Chinese ODM Manufacturers

Bridging tier-one mechanical fabrication, cost leadership, rigorous metallurgy, and specialized domain IP.

Full Supply Chain Integration

China hosts complete domestic manufacturing ecosystems for pressure vessels (ASME Sec. VIII), duplex stainless steel metallurgy (2205/2507, titanium Grade 2), high-pressure positive displacement pumps, and specialized membrane elements. Sourcing directly eliminates multi-layered broker margins, shortening lead times by up to 45% compared to Western counterparts.

Skid-Mounted Modular Engineering

Our plants construct skid-mounted, fully enclosed 20ft and 40ft high-cube ISO shipping container systems. Units undergo complete mechanical, electrical, and hydraulic Factory Acceptance Testing (FAT) in Shanghai before shipping. Site installation requires only primary fluid connections and three-phase power, with field commissioning wrapped within 15 days.

Intelligent Automation & Edge SCADA

Integrated PLC control architectures (Siemens, Allen-Bradley, or Schneider) feature automated chemical flushing, clean-in-place (CIP) regimens, variable-frequency energy conservation drives, and cloud telemetry. Unmanned field operation reduces high labor overheads in isolated well pads while streaming diagnostic parameters straight to central engineering hubs.

Tailored Global Application Scenarios

Addressing geotechnical diversity across major petroleum basins worldwide.

Desert & Arid Basins (Middle East, Tarim)

Where freshwater costs rival chemical stimulation packages, our closed-loop mobile DTRO units recover upwards of 75% to 85% of flowback water as reusable base fluid for slickwater slicking packages, cutting sourcing costs and avoiding subsurface wastewater re-injection risks.

Cold Climate Operations (Kazakhstan, Siberia)

Constructed within insulated, thermally regulated sea containers outfitted with internal explosion-proof heating (ATEX/IECEx compliant), trace heating on all external fluid manifolds, and auto-drain safety logic to prevent severe freeze damage during unexpected shut-ins.

Offshore Platforms & Coastal Fields

Ultra-compact structural footprints built with lightweight, corrosion-proof titanium and super-austenitic steels (AL-6XN). These systems reliably treat production water to strict discharge limits (<29 mg/L oil-in-water OSPAR standard) before ocean discharge or low-salinity waterflooding.

Meeting Global EPC & Oilfield Operator Procurement Mandates

Comprehensive engineering compliance verified through authoritative international quality frameworks.

Full CE Certification

Pressure Equipment Directive (PED 2014/68/EU) and Machinery Directive compliance, facilitating rapid operational clearances throughout European and Middle Eastern concessions.

ISO 9001 / 14001 / 45001

Audited Quality, Environmental, and Occupational Safety frameworks ensuring zero critical defects across heavy machining, automated orbital welding, and vessel coatings.

M&E Installation Class II

National certified engineering contracting authority allowing our deployment teams to direct large-scale hydraulic piping, pump stations, and sub-station integrations.

Customized ODM / OEM

Bespoke private-label fabrication for multinational oilfield service majors (SLB, Baker Hughes, Halliburton equivalents), providing white-labeled SCADA, P&ID, and branding.

Advanced Separation Systems & Membrane Series

High-pressure recovery units, membrane degassing systems, and ultrapure processing assets from our Shanghai workshops.

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Technical & Procurement FAQ

In-depth engineering answers addressing hydraulic fracturing flowback treatment, reinjection compliance, and system commissioning.

How does Tongjie solve membrane fouling caused by friction reducers and polyacrylamide (PAM) in flowback water?

Friction reducers, crosslinkers, and residual PAM represent severe foulants that cause irreversible gel-layer polarization on standard spiral-wound RO membranes. Our factory tackles this through a two-stage mitigation design: First, an electro-catalytic Fenton or ozone/UV advanced oxidation process (AOP) selectively cleaves polymer chains into low-molecular-weight organic acids. Second, we integrate Disc Tube Reverse Osmosis (DTRO) modules. The DTRO’s open-channel hydraulic geometry generates localized turbulent boundary currents, effectively preventing macromolecular adhesion on the membrane surface and enabling reliable chemical recovery via scheduled alkaline Clean-in-Place (CIP).

Can the treated fracturing flowback effluent meet strict downhole reinjection specifications?

Yes. Re-injection into low-permeability reservoirs demands strict removal of suspended solids and oil droplets to avoid permanent formation plugging. Tongjie’s skid-mounted systems consistently yield effluent with residual oil content ≤5 mg/L, suspended solids (SS) ≤1 mg/L, and a median particle size diameter <1.0 µm. Sulfide and iron precipitates are fully mitigated through automated catalytic oxidation and multi-media cartridge microfiltration, enabling compliant reinjection and zero-discharge reuse across global basins.

What raw water water quality inputs are necessary to size an ODM flowback treatment unit?

To generate an accurate process mass balance, P&ID, and proposal, our engineering team requires: (1) Complete comprehensive ionic composition (Ca²⁺, Mg²⁺, Ba²⁺, Sr²⁺, Fe²⁺/Fe³⁺, Cl⁻, SO₄²⁻, HCO₃⁻, and reactive SiO₂); (2) Bulk parameters including Total Dissolved Solids (TDS), Total Organic Carbon (TOC), Chemical Oxygen Demand (COD), pH, temperature variance, and Turbidity/SDI; (3) Hydrocarbon contamination profile (free oil, emulsified oil, and volatile BTEX); (4) Required volumetric capacity (m³/day or GPM) and intended disposal route (slickwater re-blending, Class II SWD reinjection, or surface discharge).

What is the expected operating lifecycle and replacement frequency for DTRO modules in high-salinity service?

Under regular automated Clean-In-Place (CIP) protocols and proper feed softening (ensuring calcium and barium saturation indexes remain controlled), our disc-tube RO membrane cushions demonstrate a practical service life of 24 to 36 months in harsh flowback applications. Unlike conventional spiral-wound elements where single-leaf failure necessitates replacing the entire vessel element, DTRO components allow individual membrane cushion inspection and replacement, lowering operating expenses (OPEX) by up to 40%.

How do you ensure equipment reliability during operations in remote, extreme-weather locations?

Every containerized system destined for arid or sub-zero environments is built inside reinforced, marine-grade sea containers featuring polyurethane spray foam thermal insulation, heavy-duty industrial HVAC systems, and explosion-proof convection heaters. Wetted metal components utilize Super Duplex 2507, Hastelloy C-276, or high-pressure CPVC/PVDF piping to withstand extreme chloride stress cracking. Comprehensive edge SCADA architectures enable remote telemetry, automated fault diagnostics, and safe system purging during emergency stops.

Accelerate Your Field Flowback Treatment Project

Collaborate with Tongjie’s engineering group. Send us your complete raw water assay, target volume metrics, and operational goals for a comprehensive process design, equipment scope, and capital quotation within 48 business hours.

Consult With Our Water Engineers Download Engineering Whitepaper & Catalog