Method for applying waste water of viscous oil after treated to low-pressure steam boilers

A technology of heavy oil sewage and low pressure steam, applied in water/sewage multi-stage treatment, flotation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult operation and insufficient pretreatment unit treatment, etc. To achieve the effect of fast action, simple regeneration method and good effect

Inactive Publication Date: 2013-05-22
杭州广联新能源科技有限公司
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Problems solved by technology

With this patented technology, the pretreatment unit does not handle enough, while the membrane separation and reverse osmosis units have high requirements on water quality and are difficult to operate

Method used

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  • Method for applying waste water of viscous oil after treated to low-pressure steam boilers

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Embodiment Construction

[0019] Such as figure 1 Shown, a kind of heavy oil sewage treatment is used in the method for low-pressure steam boiler, and its steps are as follows:

[0020] A. After heavy oily sewage is floated in traditional large tanks, most of the slick oil in the sewage is removed, and then enters the electric floating device to further remove the remaining slick oil, suspended oil and part of the emulsified oil in the sewage;

[0021] B. Water purifying agent is added to the effluent of the electric floatation device and mixed through the pipeline mixer before entering the electrocatalytic oxidation air floatation device; the electrocatalytic oxidation air floatation device is used to oxidize and reduce the COD of sewage, and the bubble diameter formed in situ by the electric floatation device is small, The advantages of large specific surface area and small limit particle size that can be absorbed and floated can realize efficient air flotation separation of mechanical impurities and...

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Abstract

The invention discloses a method for applying waste water of viscous oil after treated to low-pressure steam boilers. The method mainly comprises the following steps: A, floating oil operation is carried out on the waste water of the viscous oil, and then the waste water of the viscous oil enters an electric floating device so as to further remove the oil; B, the outlet water after added with water purifier passes through a mixer, and then enters an electric catalytic oxidation floating device to carry out electric floating operation; C, the outlet water of the electric catalytic oxidation floating device passes through a filter device to be filtered; and D, the filtered waste water enters an ion-exchange tower to be softened, and then the softened waste water is applied to the low-pressure steam boilers. The treated waste water can replace the clear water to be applied to the low-pressure steam boilers, so that clean water which is in increasing shortage can be saved, and the problems that the waste water of the viscous oil cannot be discharged and the environment is polluted can be solved.

Description

technical field [0001] The invention relates to a method for using heavy oil sewage in a low-pressure steam boiler after treatment, and belongs to the technical field of oilfield sewage treatment. Background technique [0002] Oilfield heavy oil sewage is the sewage after the oil-gas separation and dehydration of the oilfield production liquid, that is, the oily sewage. This oily sewage not only contains crude oil, but also dissolves various salts, harmful gases, organic matter and a large amount of suspended solids; a variety of chemicals are usually added in the oil and gas treatment process. Commonly used treatment methods include degreasing, removing suspended solids, removing silicon, and softening. Due to the large diameter of the bubbles in the traditional dissolved air flotation method, the limit particle size that can be absorbed and floated is large, the air flotation efficiency is low, and more water purifiers need to be added. The oxygen content of the air flota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/42C02F1/465
Inventor 赵瑞玉董滨孙承林朱成君陈大强仉志华于永辉贾增金
Owner 杭州广联新能源科技有限公司
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