Bio-solution · W04 · Water
Oilfield produced water treated biologically instead of chemical-only conditioning and disposal
Replaces
Continuous chemical conditioning of produced water (biocides, scale inhibitors, emulsion breakers, demulsifiers) ahead of disposal/injection; overloaded evaporation ponds
Continuous chemical conditioning of produced water (biocides, scale inhibitors, emulsion breakers, demulsifiers) ahead of disposal/injection; overloaded evaporation ponds
→
Scope
Onshore oil & gas produced water: hydrocarbon-bioremediation, dissolved-organics treatment, reuse for irrigation/hydraulic fracturing
Onshore oil & gas produced water: hydrocarbon-bioremediation, dissolved-organics treatment, reuse for irrigation/hydraulic fracturing
Suppliers 4
| GAARA Group | Egypt | active |
| IETOS | Egypt | active |
| WEC Water | South Africa | active |
| PROXA Water | South Africa | active |
Route into Russia / EAEU SERV
- Regulator
- — (operator: Rosprirodnadzor, Rostechnadzor)
- Typical time
- none for the service; operator permits (integrated environmental permit ~1 month)
- Legal basis
- No product registration; operators of category I facilities need an integrated environmental permit (Federal Law 7-FZ Art. 31.1) and, where relevant, Rostechnadzor licences
Information, not legal advice — confirm the procedure for your product.
Proof 3 claims
Old process
Deep well injection, evaporation ponds, and conventional physical/chemical treatment units.
Deep well injection, evaporation ponds, and conventional physical/chemical treatment units.
→
New practice
Biological treatment (e.g., membrane bioreactors, sequencing batch reactors, bio-units) of produced water.
Biological treatment (e.g., membrane bioreactors, sequencing batch reactors, bio-units) of produced water.
- Displaced at scale?
- no
- Caveats
- Biological treatment of produced water remains largely in the research, pilot, or niche application stage. There is no evidence of it having displaced conventional disposal methods (such as deep well injection, which still manages over 95% of produced water) at a commercial scale.
- Research activity
- “produced water treatment” — funded papers since 2015: CN 59 · BR 22 · IN 1
Effective treatment of simulated ASP flooding produced water by modifi (doi) - checked
- 2026-10-06
| Currently, over 95% of produced water is managed through underground injection. “Currently over 95 % of PW is managed through underground injection.” U.S. · 2025 · not applicable | peer-reviewed www.sciencedirect.com |
| A pilot-scale bio-unit achieved significantly higher removal rates for TDS, TSS, TOC, salinity, and COD compared to an existing physical treatment unit in a crude oil facility. “The percentage removal of Total Dissolved Solids (TDS), Total Suspended Solids (TSS), Total Organic Carbon (TOC), Salinity and Chemical Oxygen Demand (COD) using the Bio-Unit were 98.2%, 96.8%, 98.5%, 96.7%, 97.6%, respectively, while for the physical treatment (PTU) process were 31.5%, 55.3%, 82.2%, 37.1% and 73.8%, …” Nigeria · 2023 · pilot or niche | weak (company, news, market research, other) www.sciencepublishinggroup.com |
| A pilot-scale combined SBR and ceramic membrane bioreactor process achieved a unit treatment cost of 0.21 USD/m3, saving 62.5% in energy costs compared to a conventional membrane bioreactor process. “The capital expenditure for operating the full-scale combined SBR and C−MBR process was 251,717 USD, and the cost for treating high-salinity oil recovery wastewater was 0.21 USD/m3. The energy cost of the conventional MBR process was 0.56 USD/m3, and the combined process reduced the energy cost by 62.5% [32].” global · 2022 · pilot or niche | peer-reviewed pmc.ncbi.nlm.nih.gov |
Details
Replaces: chemical-only produced-water conditioning · Scope: onshore oil & gas · Evidence: mixed, case-proven
The chemical problem#
- Every barrel of oil comes with several barrels of water: saline, oily, dosed with biocides, demulsifiers and scale inhibitors before injection or ponding.
- Chemical conditioning makes the water manageable, not clean: ponds seep, injection pressures rise, and any reuse (irrigation, fracturing make-up) needs the organics out.
- In the producing regions of this index (Gulf, North Africa, Nigeria, Andes), produced-water handling is both an environmental flashpoint and a water-resource opportunity in arid zones.
Product overview#
- Hydrocarbon bioremediation: native/deployed consortia degrade dissolved and dispersed hydrocarbons (E03’s land-spill logic in a tank); oily-sludge digestion.
- Biological polishing trains: DAF/flash tanks (capture float oil) → aerobic MBBR/MBR on dissolved organics (W01 hardware) → desalination where reuse demands it.
- Reuse routes: treated produced water for fracturing make-up, crop irrigation of tolerant species (California/Permian programs), or dust control — turning a disposal cost into a water asset.
- Source-side allies: nitrate against reservoir souring instead of biocides (I04) cuts the biocide mass at the origin.
Active ingredient / Composition#
- Hydrocarbonoclastic bacteria (Pseudomonas, Rhodococcus, Alcanivorax-class) with nutrient dosing (N/P) and aeration; residence hours–days depending on load.
Key facts#
| Parameter | Value |
|---|---|
| Class | Biological treatment of industrial wastewater |
| Volumes | Typically 3–8 bbl water per bbl oil (worse in mature fields) |
| Targets | BTEX, TPH, phenols; salinity needs separate desalination |
- | Reuse bars | Irrigation/fracturing specs drive the treatment train depth |
Advantages#
- Degrades the organics instead of transferring them to sludge/ponds.
- Reuse converts a cost line into a water resource where the field is arid (much of this index’s producing geography).
- Same consortia/vendors as E03 spills and W01 effluents — technology transfer, not invention.
Mode of action#
- Aerobic hydrocarbon catabolism: alkane/aromatic pathways (alkB, ring-hydroxylating dioxygenases) to biomass + CO₂; N/P nutrition balanced to the load; biosurfactant-producing strains assist emulsified uptake (CM03 adjacency).
Application#
| Site | Target | Method, timing and specifics |
|---|---|---|
| Central facility | Disposal quality | Skim tank → MBBR/MBR biological polishing on dissolved organics before injection |
| Oily sludge pits | Closure | Bioremediation of pit contents before landform (E03 practice) |
| Reuse program | Irrigation/fracturing | Treat-to-spec train incl. desalination; regulatory engagement early |
Limitations#
- Salinity is the wall: biology cleans organics, not salt — reuse beyond tolerant irrigation/fracturing needs desalination (energy).
- Programs are field-specific: water chemistry, acreage, and law decide economics; no universal design.
- Production chemistry (demulsifiers/biocides) can inhibit the biology — coordinate chemical selection.
Evidence of displacement — D0: no verified evidence#
No verified figure was found for this substitution.
Suppliers — real products and services (from the vendor index)#
Active vendors matched by topic tags (
water-bioremediation) in producing regions; open each card for evidence, contacts and status.
| Company | Region · Country | What the index shows | Card |
|---|---|---|---|
| GAARA Group | Africa/ME · Egypt | environmental/water services | card |
| IETOS | Africa/ME · Egypt | environmental technology | card |
| WEC Water | Africa/ME · South Africa | water treatment solutions | card |
| PROXA Water | Africa/ME · South Africa | water plant operator | card |
Government funding signals#
Scanned 2026-09-28 (OpenAIRE + NSF); candidates reviewed by hand.
Signal: not visible in NSF/OpenAIRE — scan-source limitation. Produced-water R&D is funded mainly by oil-and-gas innovation bodies (US DOE/NETL-class, GWADClass programs) and national oil companies, none reachable by this lighter pass. Treat as unmeasured, not absent.
Scientific evidence#
- Fakhru’l-Razi A, Pendashteh A, Abdullah LC, Biak DRA, Madaeni SS, Abidin ZZ (2009). Review of technologies for oil and gas produced water treatment. Journal of Environmental Management 90: 1348–1369.
- Note: journal references will be checked against Crossref by the automated pass.
Bioeconomy value#
The oilfield’s least-loved stream is a water asset in exactly the arid provinces that produce the oil — and the biological half of its treatment is sold by vendors already sitting in this index’s Egypt/South Africa/Gulf water cluster.
Fourth article of water — completes the collection’s planned set. Cross-links: W01 trains; E03 hydrocarbon bioremediation; I04 nitrate souring control; M03 mine water.