A volumetric fracturing waste liquid electrocoagulation destabilization separation treatment device and method

Abstract

The invention provides a volumetric fracturing waste liquid electrocoagulation destabilization separation treatment device and method, the device comprises: a homogeneous adjustment tank, an electro-flocculation reaction tank and a sedimentation separation tank; a homogeneous adjustment tank, an electro-flocculation reaction tank and a sedimentation tank The separation pools are connected sequentially; inside the homogeneous adjustment pool, there are several independent waste liquid storage tanks that are not connected to each other, and an online chlorine ion monitoring instrument is installed at the entrance of the homogeneous adjustment pool; A number of electric valves and mixers that can automatically adjust the opening range; the electroflocculation reaction pool is equipped with a front-end destabilization reaction zone and a rear-end flocculation reaction zone, and the front-end destabilization reaction zone and the rear-end flocculation reaction zone are respectively equipped with The electrode plate group, and the flow channel between the plates in the front destabilization reaction zone is an S-shaped series structure, and the flow channel between the plates in the back-end flocculation reaction zone is a parallel structure. The invention can realize high-efficiency and low-cost destabilization and separation treatment of volumetric fracturing waste liquid.

Description

A kind of volume fracturing waste liquid electroflocculation destabilization separation treatment device and method technical field The present invention relates to a kind of volume fracturing waste liquid electro-flocculation destabilization separation treatment device and method, belong to the industrial waste water place The field of science and technology. Background technique The development of shale gas resources has been gradually accelerated in recent years, as the volume fracturing method that must be used in the shale gas development process. Due to its characteristics of large water consumption, large flowback liquid, and long flowback period, it has always been an important environment in the process of shale gas development. influencing factors. During the process of flowback from the formation to the surface, the volume fracturing waste liquid entrains some suspended solids and salts in the formation water. The composition of fracturing waste fluid is ...

AI Technical Summary

Problems solved by technology

[0006] However, during the application process, it was found that due to the water quality characteristics of the volumetric fracturing waste fluid, plate passivation and fouling occurred frequently during the application of the electrocoagulation process, which seriously affected the destabilization reaction efficiency of the electrocoagulation process, resulting in increased power consumption , shortened plate life, and reduced treatment efficiency, it is urgent to optimize the design of the electrocoagulation process to meet the needs of volumetric fracturing waste fluid treatment, so as to ensure the efficient application of this technology in the field of environmental protection for shale gas development

[0007] Based on the water quality characteristics of the volumetric fracturing waste fluid, how to reduce the problem of reduced reaction efficiency caused by scaling ions and keep the electrocoagulation process efficient and Cost characteristics are the primary issue for process technology improvement

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