Siemens Supplies Wastewater Reuse System for Natural Gas Drilling

Source: 
Siemens

System will treat flowback from fracking and produced water from operating wells

Siemens Water Technologies is providing Hydro Recovery LP with a wastewater treatment system to treat natural gas hydraulic fracturing wastewater (flowback) from Marcellus Shale drilling and produced water from operating wells in Tioga and surrounding counties in northeastern Pennsylvania. This flowback and produced water waste treatment system will be part of a new wastewater treatment plant in Tioga County and include continuous precipitation and sludge dewatering. By using the Siemens system, the wastewater will be treated to produce a Hydraulic Stimulation Fluid (HSF) product for reuse, reducing the demand on fresh water sources. The plant is scheduled to go online in April 2011.

Tioga County’s system will include staged precipitation and dewatering technologies to treat 288,000 gal per day of water generated from the drilling of natural gas wells. The HSF product produced from the system will reduce hardness by 97%, remove barium by 99% and iron and other metals to less than 1 part per million (ppm), reduce hydraulic fracturing chemical use, optimize pH for friction reduction and remove total suspended solids to less than 100 ppm.

The recycled, customized product is used in fracturing shale. Shale gas is natural gas produced from shale rock fields. This gas has become an increasingly important source of natural gas in the United States over the past decade, with interest also spreading to potential gas shale in Canada, Europe, Asia and Australia. Gas production in commercial quantities in these fields requires fractures to provide well permeability, and modern technology in hydraulic fracturing allows the creation of extensive artificial fractures around well bores. Hydraulic fracturing, however, results in the production of wastewater that must be treated.

HSF is a trademark of Hydro Recovery LP.

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