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Treatment system for shale gas fracturing flow-back fluid

A treatment system and flowback liquid technology, applied in filtration treatment, water/sewage treatment, mining wastewater treatment, etc., can solve problems such as high production costs and environmental pollution, achieve rational utilization of resources, increase concentration ratio, and reduce investment and operating costs

Pending Publication Date: 2021-06-29
SUNUP ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the accumulated brine and other chemical components still need to be treated, so the problems of high production cost and environmental pollution still exist

Method used

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  • Treatment system for shale gas fracturing flow-back fluid
  • Treatment system for shale gas fracturing flow-back fluid
  • Treatment system for shale gas fracturing flow-back fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] In one embodiment, the initial value of the shale gas fracturing flowback fluid is shown in the following table:

[0036] Table 1 Initial values ​​of components in shale gas fracturing flowback fluid

[0037]

[0038] A treatment system for shale gas fracturing flowback fluid, comprising the following steps:

[0039] 1) After the shale gas fracturing flowback fluid is settled in the waste water collection tank to remove large particle size impurities, the supernatant enters the reaction tank of the first reaction system, and the coagulant and flocculant dosing device Add the flocculant and flocculant evenly into the reaction tank of the first reaction system, and make it fully react through the mechanical stirring device and the aeration system. After 15 minutes of reaction residence time, the feed liquid in the reaction tank is transported to the sedimentation system, and the waste water is removed by sedimentation suspended solids in

[0040] 2) The supernatant o...

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Abstract

The invention belongs to the technical field of water treatment, and particularly relates to a treatment system for shale gas fracturing flow-back fluid. According to the treatment system, the connection relation and the treatment relation among systems such as a reaction system, a precipitation system, a filtering system, an oil removal system, a separation system, a resin softening system, a nanofiltration membrane salt separation system, a reverse osmosis membrane concentration system, an evaporation system and an ammonia nitrogen adsorption system are reasonably designed, salt and other chemical components in the fracturing flow-back fluid can be effectively removed, produced water can reach the standard and be recycled, salt in waste liquid can be extracted and sold as industrial salt, reasonable utilization of resources is achieved, environment friendliness is achieved, system equipment is simple, operability is high, the operation cost is reduced, the problems of production cost increase and environmental pollution caused by accumulation of salt and other chemical components when the shale gas fracturing flow-back fluid is recycled are solved, and good economic benefits and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a treatment system for shale gas fracturing flowback fluid. Background technique [0002] Shale gas is a clean, low-carbon, and unconventional natural gas resource that exists in mud shale in adsorbed, dissolved, or free states. Shale gas development has the advantages of long production life, high output and long production cycle, and has become a new bright spot in the exploration and development of global oil and gas resources. However, as the most mature shale gas exploitation method—hydraulic fracturing technology, due to the release of methane and other greenhouse gases, waste water discharge, groundwater pollution and other environmental problems, it has attracted great attention from governments and people in various countries. Among them, water pollution The most worrisome question. Shale gas fracturing flowback fluid has the characteristics of comp...

Claims

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Application Information

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IPC IPC(8): C02F9/04C02F9/06C02F101/10C02F101/20C02F101/32C02F103/10
CPCC02F9/00C02F1/001C02F1/40C02F1/442C02F1/5236C02F1/56C02F1/78C02F1/32C02F1/50C02F1/283C02F5/06C02F5/02C02F2001/425C02F1/28C02F1/4693C02F2209/06C02F2209/03C02F2103/10C02F2209/08C02F2209/14C02F2209/10C02F2101/32C02F2101/20C02F2101/10C02F2101/203
Inventor 谭斌黄传敏方毓淳俞海燕马宏国
Owner SUNUP ENVIRONMENTAL TECH CO LTD
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