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Microfiltration membrane oil filed sewage processing device and processing method

A technology for oilfield sewage and treatment equipment, which is applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problems of decreased membrane flux, low treatment accuracy, and formation of filter cake layers To achieve the effect of streamlining the process, ensuring the effect of backwashing and compact equipment

Inactive Publication Date: 2016-12-14
YANCHANG OIL FIELD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a microfiltration membrane oilfield sewage treatment device, which solves the problem that the existing treatment device will produce a filter cake layer and the membrane flux will decrease
[0007] Another object of the present invention is to provide a method for sewage treatment using the above-mentioned microfiltration membrane oilfield sewage treatment device, which solves the problem of low treatment accuracy of existing treatment methods

Method used

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  • Microfiltration membrane oil filed sewage processing device and processing method
  • Microfiltration membrane oil filed sewage processing device and processing method
  • Microfiltration membrane oil filed sewage processing device and processing method

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Experimental program
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Effect test

Embodiment

[0071] Experimental conditions: The injection water quality of many oil production fields in Yanchang Oilfield was significantly exceeded due to the limitation of the treatment effect of the sewage treatment process of the joint station. It is planned to build a microfiltration membrane oilfield sewage treatment integrated skid at the 1876 treatment station of Dingbian Oil Production Plant The device was installed to conduct research on sewage treatment technology, and the experimental results are shown in Table 1:

[0072] Table 1 Particle size distribution of suspended solids in effluent water samples

[0073]

[0074]

[0075] It can be seen from Table 1 that the particle size distribution of suspended solids in oilfield produced water treated by the microfiltration membrane sewage treatment device is between 91.28 and 955.4 nm, and the median particle size of suspended solids is less than 1 μm. This index has reached Requirements of "Injection Water Quality Indicator...

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Abstract

The invention discloses a microfiltration membrane oil filed sewage processing device. The device comprises a flocculation settlement facility, a cyclone oil-water separator, a multistage mechanical filtering device, and a metal membrane filtering device, which are connected in sequence. The multistage mechanical filtering device comprises a walnut shell filtering device, a fine walnut shell filtering device, a modified fiber ball filtering device, and a dual-layer filtering material filtering device, which are connected in sequence. The sewage processing method comprises the following steps: removing pollutants by the flocculation settlement facility, pumping sewage into the cyclone oil-water separator to carry out separation, and filtering the separated water phase by the walnut shell filtering device, the fine walnut shell filtering device, the modified fiber ball filtering device, the dual-layer filtering material filtering device, and the metal membrane filter device to obtain qualified water phase. The design is novel, the operation is safe, stable, and reliable, the effect is good; the produced water in oil field can be purified and the processed water can reach the standards of reinjection. The provided device can realize gas-water combined backwashing, the backwashing effect is guaranteed, and the device can be used for a long term.

Description

technical field [0001] The invention belongs to the technical field of oilfield sewage treatment, and in particular relates to a microfiltration membrane oilfield sewage treatment device, and also relates to a sewage treatment method using the device. Background technique [0002] At present, most of my country's oilfields are in the middle and late stages of exploitation. During the development and production of oilfields, a large amount of oil extraction wastewater is generated, and most of the oil extraction wastewater is treated and reinjected into the oil layer. It is an economical and effective method to protect the environment and save a lot of water resources by reinjecting the oil field sewage into the oil reservoir after treatment. Oil production sewage not only contains petroleum components, but also contains solid suspended solids, emulsified oil, bacteria, and chemical agents (such as demulsifiers, flocculants, bactericides) and other components. When the oil c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCY02W10/37C02F9/00C02F1/001C02F1/38C02F1/44C02F1/5281C02F2303/16
Inventor 刘栋陶红胜高文玲高嘉喜李国军展转盈张建国张春威鲍文刘婷婷易冬蕊
Owner YANCHANG OIL FIELD
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