Marcellus Shale Wastewaters Management by Resource Recovery Shale Gas Innovation Contest Ben Franklin Technology Partners April 13, 2012. Timothy Keister, CWT , Chief Chemist ProChemTech International, Inc. 51 ProChemTech Drive Brockway PA. Marcellus Shale Wastewaters.
Marcellus Shale Wastewaters Management by Resource Recovery Shale Gas Innovation Contest Ben Franklin Technology PartnersApril 13, 2012
Timothy Keister, CWT , Chief Chemist
ProChemTech International, Inc.
51 ProChemTech Drive
The Marcellus Shale is the largest natural gas development in North America
Marcellus Deposit Outlined in Blue
barium (toxic heavy metal) 6,500 mg/l
iron 60 mg/l
sodium 48,000 mg/l
dissolved solids195,000 mg/l
total hardness as CaCO354,500 mg/l
suspended solids1,200 mg/l
ProChemTech International, Inc. has
developed a sequential precipitation fractional crystallization technology that converts Marcellus shale wastewaters into salable commodities
Step 1 - Clarification
As flowback and production wastewaters are delivered to the treatment facility, they are treated by passage through a free oil and solids separator, inclined plate clarifier, as delivered. Clarified wastewater is then pumped to an aerated chemical equalization tank.
Tank capacity is set to equal daily system throughput.
Under the specific conditions of pH and
ORP obtained in the step 2 chemical
additions, barium is completely precipitated
as a commercial purity barium sulfate.
Iron, manganese, and radioactives present
are also removed and incorporated into the
Radioactivity level of the barium sulfate
is equal to commercial barite samples
Note: Our first barium sulfate system was designed and built in 1990 for MuRata Electronics
Step 4 - Strontium Recovery
Optionally, strontium can be recovered from the barium stripped wastewater by addition of sulfuric acid, sodium hydroxide, and anionic polymer under defined conditions to precipitate strontium sulfate. The strontium sulfate is then removed by an inclined plate clarifier, dewatered, and dried as the barium sulfate.
Step 6 Sodium Chloride Purification
Late News Flash
The Program Committee of the International Water Conference has accepted the paper by Timothy Keister titled “Sequential Precipitation - Fractional Crystallization Treatment of Marcellus Shale Flowback and Production Wastewaters” for presentation at the 73 rd Annual International Water Conference, San Antonio, TX, November, 2012
Thank You - Questions
PCT Sequential Precipitation Fractional Crystallization Process - Right to Left
raw water - barite - stripped brine - sodium chloride crystal
calcium chloride solution - distilled water