Treatment of fracturing fluid and lithium recovery system

1) various additives are added in the fracturing fluid system, and the turbidity, Chroma and COD of the waste water are higher after fracturing fluid is broken. Arbitrary emissions will cause greater harm to the surrounding environment.

(2) the backflow fracturing fluid has high viscosity, high organic matter content, high solid suspension particle content, high suspended oil content and poor biochemical property due to incomplete gel breaking. The composition of the backflow is also complex, with high polymer content, high viscosity, high content of organic and inorganic additives, followed by SBR bacteria, sulfide and metal content. The viscosity is 20 mpa · s, and the stability is high.

(3) intermittent discharge of fracturing backflow has a large discharge volume.

At present, there are three main treatment methods for fracturing fluid produced in gas field:

The first is to treat the reinjection water which can be used for water injection mining after reaching a certain standard or is poured into waste formation;

Second, after treatment to meet the emission standards;

Third, as a fracturing fluid system of the preparation of water cycle use.