Advanced technologies portfolio for Produced Water treatment and reuse proposed by VEOLIA

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1 Advanced technologies portfolio for Produced Water treatment and reuse proposed by VEOLIA M. HENDOU TECHNICAL DIRECTOR VEOLIA OIL & GAS GEOENERGY DAYS July 4, 2018

2 Produced water main components Water Hydrocarbons: ppm - Dispersed hydrocarbons (Oil In Water) - Dissolved hydrocarbons (BTEX) - Precipitated (waxes, asphaltenes, organic acids) Solids - Suspended (sands, scales, corrosion products) ppm - Dissolved (salts, iron high TDS) ppm Dissolved Gases (oxygen, carbon dioxide, hydrogen sulphide, hydrocarbons) Production chemicals (corrosion inhibitor, hydrate inhibitor, emulsion breakers ) Metals NORM (Naturally Occurring Radioactive Materials) Others: phenol and ammonia 04/07/2018 2

3 Produced Water Treatment Specifications Re-injection Fracking - Oil < 5 to 50 ppm - TSS < 50 ppm - TSS <10 to 20 ppm - Oxygen < 5 to 10 ppb - TSS < 1-7 ppm with particle size < 3 µm - TDS < ppm - Hardness < ppm - Chloride < ppm (up to ppm) Steam production Discharge - Oil < 0.5 ppm - TSS < 1 ppm - Oxygen < 5 to 10 ppb - TDS < 500 ppm - Sodium < 100 ppm - Chloride, Suplhate < 150 ppm - TDS < ppm - Hardness < 0.5 ppm CaCO3 04/07/2018 3

4 Typical Treatment Lines A Skim Tank PRIMARY SEPARATION SECONDARY SEPARATION TERTIARY SEPARATION Oil TSS Separation B Skim Tank PRIMARY SEPARATION Cooling Ultra filtration Oil TSS Separation Polishing C Skim Tank PRIMARY SEPARATION Cooling Ultra filtration Polishing Oil TSS Separation Reverse Osmosis Reuse 04/07/2018 4

5 Primary Separation Tilted Plate Interceptor - Inlet max TSS : 300 ppm - Inlet max free oil : 1,000 ppm - Oil globule cut off diameter: µm and larger - Oil removal: 50 99% - Outlet residual free oil: ppm - TSS removal: 80 90% - Sand cut off size : < 40 micron - More robust to flow variations Cross Flow Interceptor - Inlet max TSS : 1,000 ppm - Inlet max free oil : 5,000 ppm - Oil globule cut off diameter: µm and larger - Oil removal : 90 98% - Outlet residual oil ( free and separable oil): ppm - TSS removal : 90 95% - Sand cut off size : < 40 micron - More robust to TSS 04/07/2018 5

6 Secondary separation Induced Gas Flotation - Inlet max TSS : 100 ppm (150 ppm peak) - Inlet max free oil : 200 ppm (300 ppm peak) - Free Oil removal : 85 95% with chemical additions (without chemicals 60 80% of floatable oil) >> 20 ppm, particles larger than 25µm - TSS removal : 90 95% - Watery floats : 3-5% of feed flow Mechanical IGF Hydraulic IGF 04/07/2018 6

7 Tertiary separation Wallnut Shell filter - Inlet max TSS : 50 ppm - Inlet max oil (free + emulsified) : 100 ppm - Oil (free + emulsified) removal : 90-98% (not less then 3 ppm) - TSS removal : 90-98% Multi Media filter (TSS > Oil) - Inlet max TSS : 50 ppm - Inlet max oil (free + emulsified) : 30 ppm - Oil (free + emulsified) removal : 90-98% - TSS removal : 90-98% Pre-coated filters (very fine TSS) - Inlet max TSS : 110 ppm - Inlet max oil (free + emulsified): 100 ppm - Oil (free + emulsified) outlet : 2 to 10 mg/l (90 98% of removal) - TSS outlet : 2 to 10 mg/l (size 2 5 µm) 04/07/2018 7

8 Polishing Oleophilic resin: emulsified oil - Inlet max TSS : 0.5 ppm - Inlet max oil(free + emulsified) : 100 ppm (peak 300 ppm) - Oil outlet concentration around : 1 ppm - TSS removal : 0 % MPPE: dissolved hydrocarbons - Inlet max oil : 20 ppm - Oil : < 1 ppm - Dissolved HC : < 0.05 ppm depending on molecules 04/07/2018 8

9 Polishing Pressurized MF/UF with organic membranes - A prefilter of 300 µm is necessary to have customer guarantees - Filtration Flux : 50 to 60 lmh - Inlet max parameters: TSS : 50 ppm (Norit, Pall) to 200 ppm (hydranautics) TOC : 30 ppm (Norit) COD : 135 ppm (Pall) Turbidity : 35 NTU (Norit, Pall) to 100 NTU(hydranautics) Free Oil : 5 ppm (Memcor), Emulsified oil : 5 ppm (Norit), total oil: 5 ppm (Pall) - Outlet guarantees: TSS : 0,1 ppm (Norit, Inge) to 2 ppm (Pall) Turbidity : 0.1 to 0.3 NTU Oil : No guarantee SDI 15 : < 3 04/07/2018 9

10 Special Treatment Secondary and Tertiary on one step The OLEOPHILIC CERAMIC is made of a mineral support on which an amine has been chemically grafted by substitution. This hydrophobic amine gives each grain an oleophilic property propitious to hydrocarbon coalescence. 04/07/

11 Special Treatment Secondary and Tertiary on one step 04/07/

12 Special Treatment Secondary and Tertiary on one step Operating Principle 04/07/

13 Special Treatment Secondary, Tertiary and Polishing on one step Pressurized MF/UF with ceramic membranes - Filtration Flux : 150 to 200 lmh - Outlet guarantees: TSS removal : > 95%, guarantees < 1 ppm Free Oil removal : > 99.9%, guarantees < 2 ppm No impact on soluble COD SDI 15 < 3 04/07/