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A biological treatment method for fracturing flowback fluid based on besi+aerobic suspension filler+single-hole membrane method

A technology of fracturing flowback fluid and suspended packing, which is applied in the field of oilfield sewage treatment, can solve the problems of low effluent quality, membrane pollution treatment cost, etc., achieve stable treatment effect, reduce treatment cost, and improve treatment effect

Active Publication Date: 2018-03-30
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of low effluent quality, membrane pollution and high treatment cost in the existing fracturing flowback fluid treatment method, the present invention proposes a biological method for fracturing flowback fluid based on BESI + aerobic suspension filler + single-hole membrane Approach

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  • A biological treatment method for fracturing flowback fluid based on besi+aerobic suspension filler+single-hole membrane method
  • A biological treatment method for fracturing flowback fluid based on besi+aerobic suspension filler+single-hole membrane method
  • A biological treatment method for fracturing flowback fluid based on besi+aerobic suspension filler+single-hole membrane method

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specific Embodiment approach 1

[0025] Specific Embodiments 1. In this embodiment, a biological treatment method for fracturing flowback fluid based on BESI+aerobic suspension filler+single-hole membrane method, the fracturing flowback fluid reaction device involved mainly includes: sewage water inlet pump 1, Anaerobic reaction device 2, facultative anaerobic reaction device 3, aerobic reaction device 4, single-hole membrane module 5, aerobic suspension packing 6, reflux pump 7, aeration device 8, sludge outlet 9 and peristaltic pump 10 The sewage inlet pump 1 is connected to the bottom water inlet of the anaerobic reaction device 2, and the top side wall water outlet of the anaerobic reaction device 2 is connected to the bottom water inlet of the facultative anaerobic reaction device 3, and the facultative anaerobic reaction device 3 The water outlet on the top side wall is connected to the bottom water inlet of the aerobic reaction device 4, the single-hole membrane module 5 and the aerobic suspension fille...

specific Embodiment approach 2

[0037] Specific embodiment 2. This embodiment is a further description of the biological treatment method for fracturing flowback fluid based on BESI + aerobic suspension filler + single-hole membrane method described in specific embodiment 1. The anaerobic reaction described in step 1 Device 2 is a UASB anaerobic reaction device, an ABR anaerobic reaction device, an IC anaerobic reaction device or an SBR anaerobic reaction device.

specific Embodiment approach 3

[0038] Specific embodiment three. This embodiment is a further description of the biological treatment method for fracturing flowback fluid based on BESI + aerobic suspension filler + single-hole membrane method described in specific embodiment one or two. The oxygen reaction device 2 is filled with suspended fillers for anaerobic use, and the filling ratio is 30-50% by volume, wherein the suspended fillers for anaerobic use are black polyurethane with a size of 4×4×4 cm.

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Abstract

The invention discloses a fracturing flowback fluid biological treatment method based on BESI, aerobiotic suspended packing and a single-hole membrane method, relates to the field of oilfield sewage treatment, and aims at solving the problems that in an existing fracturing flowback fluid treatment method, the effluent quality is not high, a membrane is polluted, and the treatment cost is high. The fracturing flowback fluid biological treatment method based on the BESI, the aerobiotic suspended packing and the single-hole membrane method comprises the following steps that 1, fracturing flowback fluid is treated in an anaerobic reaction device; 2, the fracturing flowback fluid is treated in a facultative anaerobic reaction device; 3, the fracturing flowback fluid is treated in an aerobiotic reaction device; 4, part of treated water is drained to a drain pipe from a water outlet of a single-hole membrane assembly through a peristaltic pump, and the other part of the treated water returns into the facultative anaerobic reaction device. The method is suitable for the field of oilfield sewage treatment and particularly suitable for fracturing flowback fluid treatment.

Description

technical field [0001] The invention relates to the field of oilfield sewage treatment, in particular to a biological treatment method for fracturing flowback fluid based on BESI + aerobic suspension filler + single membrane method. Background technique [0002] At present, the exploitation of my country's oilfields has generally entered the middle and late stages, and the use of fracturing operations is of great significance for increasing production and injection in oilfields. The fracturing flowback fluid produced by fracturing operations contains a large amount of toxic and harmful substances. If it is discharged directly without treatment, it will have an important impact on the ecosystem around the oil field. Due to the complex chemical composition, high viscosity, high COD, high suspended solids, high salinity, and difficult biodegradation of fracturing flowback fluid, fracturing flowback fluid is difficult to handle. [0003] At present, the treatment of fracturing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/10
CPCC02F3/08C02F3/108C02F3/302C02F9/00C02F2103/10C02F2301/043C02F2301/046C02F2305/06
Inventor 魏利刘璞魏东李春颖魏超
Owner HARBIN INST OF TECH
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