The many options for managing brine, a term for saline wastewater from industrial processes, fall under two categories: brine treatment and brine disposal. Brine treatment involves desalinating the brine for reuse and producing a concentrated brine (lower liquid waste volume), or residual solids (zero liquid discharge).
Disposal Well Protection
Saltworks can reduce fluid volume by treating it with a range of solutions and products, depending on your needs. Upon mixing, some waters pose a risk of precipitating and plugging active disposal wells. We can protect disposal wells from plugging with our real-time sensors, by detecting incompatible wastewaters and preventing co-mingling.
Disposal wells are an important means to safely dispose of many of the most hazardous fluids deep underground. Disposal wells may face challenges such as:
- Plugging of active wells, caused by the mixing of different wastewaters with incompatible dissolved ions
- Regulatory limits to injection pressures and volumes due to seismicity or leaking risks
Saltworks can help with both of these challenges.
Protect Against Plugging
When two different wastewaters are allowed to co-mingle, a water-insoluble solid can be precipitated. This risks plugging the well. One example is the mixing of sulfate- and barium-rich waters, which react to form barium sulfate.
A real-time sensor can protect a disposal well by screening the wastewaters for high content of incompatible ions. Controls using our ScaleSense sensor can divert an incompatible flow into a separate stream, which we can inexpensively treat before disposal, for example with a product like BrineRefine.
Volume reduction options can help to achieve the best use of disposal well pressure and volume capacity. Our membrane products—such as XtremeRO—can produce a more concentrated, lower volume fluid. Our SaltMaker evaporators can reduce volume further, with options to suit your energy, chemistry, and capacity needs.
Saltworks’ volume reduction experts can help you to understand your treatment and disposal options, including discharge regulations and economics.
Disposal Well Related Products
BrineRefine Chemical Softening System
Smart, compact, modular chemical softening system that reduces costs with precision dosing and built-in solids management. Improves recovery and minimizes fouling risk with intelligent controls that communicate with downstream assets, like RO or evaporators.
An automated, real-time sensor for saline waters that measures calcium (Ca2+), barium (Ba2+), sulfate (SO42-) ions and silica (SiO2). ScaleSense is robust and corrosion-resistant and functions accurately and precisely, even at extremely high-TDS.
Next-generation water-maker and brine-concentrator based on reverse osmosis that achieves extreme freshwater recoveries, enabling cost-effective brine management and treatment of challenging organic-laden waters including oil & gas produced waters.More …
An ultra-robust ceramic based ultrafilter that can remove suspended solids, oils, and grease from the most challenging slurries and impacted wastewaters. XtremeUF cleans itself as it operates, to ensure your membranes maintain performance.
Disposal Well Related Resources
As regulations on FGD wastewater tighten, additional treatment is required. Often, this is chemically intense, and high cost. The best means to lower treatment costs is to reduce the volume of wastewater generated, usually by increasing internal recycle.
Saltworks completed a pilot on cooling tower blowdown demonstrating minimal liquid discharge (MLD) of up to 70x volume reduction using advanced membrane systems. The MLD paper presents brine management results and economics for water plant designers.
Real-time measurement provides prompt feedback for controls. A real-time sensor can help to optimize your process, reduce risk, and minimize operational and maintenance demand. Saltworks has developed a new real-time sensor—that is simple and robust—to operate in the high-TDS range.