Fluid treatment system

摘要

A fluid treatment system includes a fluid source, at least one anaerobic reactor vessel, and at least one aerobic reactor vessel. The anaerobic reactor vessel contains retaining a set of retaining structures that are at least partially coated with an anaerobic biofilm. The aerobic reactor vessel contains an aerobic biofilm. When fluid from the fluid source is exposed to the anaerobic biofilm, the anaerobic biofilm removes one or more metal substances from the fluid. When the fluid is exposed to the aerobic biofilm, the aerobic biofilm may cause organic materials in the fluid to metabolize. The system also may include a precipitation reactor that separates divalent metals from the fluid, a settling facility that forms a slurry comprising separated metals, and a neutralization reactor that modifies the fluid to a substantially neutral pH.

主权项

1. A fluid treatment system, comprising:
a fluid source that supplies hydraulic fracturing fluid; an anaerobic reactor comprising an intake port that is fluidly connected to the fluid source, an outlet port, and a plurality of biofilm retaining structures that are at least partially coated with an anaerobic biofilm; an aerobic reactor comprising an intake port that is fluidly connected with the outlet port of the anaerobic reactor, wherein the aerobic reactor also comprises an aerobic biofilm; and a settling facility that is configured to receive the fluid from the anaerobic reactor and separate metals from the fluid before the fluid is passed to the aerobic reactor.