CN109553166B - Electro-adsorption coalescence filler, electro-adsorption coalescence sewage treatment device and method - Google Patents
Electro-adsorption coalescence filler, electro-adsorption coalescence sewage treatment device and method Download PDFInfo
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- CN109553166B CN109553166B CN201710891890.3A CN201710891890A CN109553166B CN 109553166 B CN109553166 B CN 109553166B CN 201710891890 A CN201710891890 A CN 201710891890A CN 109553166 B CN109553166 B CN 109553166B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4691—Capacitive deionisation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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Abstract
The invention discloses an electro-adsorption coalescence filler, an electro-adsorption coalescence sewage treatment device and a method, wherein the electro-adsorption coalescence filler comprises a plurality of layers of structures which are mutually stacked, each layer of structure is a barrier strip which is arranged at intervals, the interval of the barrier strip of each layer of structure is sequentially increased along the vertical direction, the arrangement directions of the barrier strips of two adjacent layers of structures are different, and a support structure is arranged between the two adjacent layers of structures; the electro-adsorption coalescence filler has multiple collision points and small fluid resistance, and is beneficial to floating of oil drops.
Description
Technical Field
The invention belongs to the field of water treatment, and particularly relates to an electro-adsorption coalescence filler, an electro-adsorption coalescence sewage treatment device and an electro-adsorption coalescence sewage treatment method.
Background
The oil field chemical industry enterprises produce a large amount of oily sewage, and the sewage produced by each oil field at the upstream of the medium petrochemical industry reaches 100 multiplied by 104m3And d. The oil-containing sewage is seriously emulsified and contains a large amount of oil drops and suspended substances with tiny particle sizesOil drops and suspended substances are stably suspended in sewage, the oil-water separation speed is low, and the removal is difficult. In order to accelerate the oil-water separation, a great amount of agents such as a degreasing agent, a flocculating agent or a flotation agent, a coagulant aid and the like are required to be added, and the adding amount is from dozens of mg/L to 200mg/L and can reach more than 600 mg/L.
Large amounts of dosing lead to a series of problems:
1. high cost of sewage treatment, high cost of medicament up to 0.6-2.1 yuan/m3Water and partial oil fields are not qualified in water quality due to the fact that chemical adding is reduced due to insufficient chemical cost.
2. The addition of the medicament causes large sludge yield, and for example, in victory island oil production plants, the addition of the medicament to sewage causes about 30% increase of the sludge yield according to statistics. The amount of sludge generated by the pure drug is 0.3 prescription of sludge/1000 prescription of water (the water content is 70%) calculated by 100 mg/L. The sludge treatment cost is up to 236.6 yuan/square, and a large amount of sludge brings heavy burden to the production and operation of the oil field.
The electrochemical sewage treatment process is a new sewage treatment process in recent years, has the advantages of small dosage and the like, and is called as 'green chemistry'. At present, the research on electrochemical treatment of oily sewage mostly focuses on aspects of electric flocculation, electric air flotation, electrolysis and the like, and the research on physical oil removal and suspended matters under the action of an electric field such as electric field demulsification is less.
Through the action of an electric field, demulsification and oil removal of oily sewage without adding chemicals are realized, the operation cost of sewage treatment can be greatly reduced, and the sludge yield is reduced. According to the estimation, 1 seat 5000m3D sewage treatment plant, according to the dosage of 150mg/L and the medicament cost of 0.2 yuan/m3The water estimation can reduce the dosage of 274t of medicament and save the cost of medicament and sludge treatment by 75 ten thousand yuan/year.
At present, emulsion breaking technology research under the action of an electric field mostly focuses on the aspects of dehydration of high-water-content crude oil or purification of lubricating oil, namely, an electric field is applied to an oil product to be treated, emulsified water drops are collided and coalesced under the action of the electric field to be removed, and research for strengthening coalescence of oil drops in sewage by utilizing the action of the electric field is few.
Patent CN103241888B discloses a method and a device for demulsification by physical coalescence of corrugated plates under the action of an electric field, but the coalescence filler in the method adopts the stacked corrugated plates, oil drops float upwards only through small holes in the corrugated plates, the floating resistance is large, and the floating upwards and the oil recovery of the oil drops are not facilitated.
Disclosure of Invention
The invention aims to provide a coalescence filler for coalescence deoiling under the action of an electric field, which solves the problems that the floating resistance of oil drops of the current coalescence filler is large and oil drops are not favorable to floating and oil recovery.
In order to achieve the above object, a first aspect of the present invention provides an electro-adsorption coalescing filler, which includes a plurality of layers of structures stacked on top of each other, each layer of structure includes a frame body and barrier bars arranged on the frame body at intervals, the intervals of the barrier bars of each layer of structure increase in sequence along a vertical direction, the barrier bars of two adjacent layers of structures are arranged in different directions, and a support structure is arranged between the two adjacent layers of structures.
A second aspect of the present invention provides an electro-adsorption coalescence sewage treatment apparatus, including: the bottom plate is arranged on the lower portion of the electro-adsorption coalescence filler, the electro-adsorption coalescence filler is connected with the positive pole of a power supply, and the bottom plate is connected with the negative pole of the power supply.
The third aspect of the present invention provides a sewage treatment method using the electro-adsorption coalescence sewage treatment apparatus, the method comprising: sewage enters from a gap between the electro-adsorption coalescence filler and the bottom plate and passes through the electro-adsorption coalescence filler from bottom to top.
(1) The electro-adsorption coalescence filler has more collision points and small fluid resistance, and is beneficial to floating oil drops;
(2) the oily sewage passes through the electro-adsorption coalescence filler of the invention, and the oil removal rate can reach more than 90 percent by utilizing the synergistic effect of electric field adsorption and coalescence oil removal, and is about 50 percent higher than that of the common coalescence filler;
(3) by using the electropolymerization filler, no medicament is required to be added, so that the medicament cost and the sludge yield can be greatly saved, and the sludge treatment cost is reduced.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout.
FIG. 1 illustrates a top view of an electro-adsorption coalescing filler according to one embodiment of the present invention.
FIG. 2 shows a single layer structural view illustration of an electro-adsorption coalescing filler in accordance with an embodiment of the invention.
Fig. 3 shows a schematic side view of an electro-adsorption coalescing filler in accordance with an embodiment of the invention.
Description of the reference numerals
1. Electro-adsorption coalescence filler 2, frame body 3, barrier strip 4, bearing structure
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The invention provides an electric adsorption coalescence filler, which comprises a plurality of layers of structures which are stacked mutually, wherein each layer of structure comprises a frame body and barrier strips which are arranged on the frame body at intervals, the intervals of the barrier strips of each layer of structure are sequentially increased along the vertical direction, the arrangement directions of the barrier strips of two adjacent layers of structures are different, and a support structure is arranged between the two adjacent layers of structures.
The electro-adsorption coalescence filler disclosed by the invention can ensure that water can collide with the barrier strips on different layer structures for multiple times when flowing from bottom to top, and can pass through gaps of the barrier strips, so that the water flow resistance is reduced.
When the electro-adsorption coalescence filler is used, the electro-adsorption coalescence filler is required to be connected to the positive electrode of a power supply, so that the electro-adsorption coalescence filler is used as an anode and has positive charges on the surface in the sewage treatment process; a stainless steel plate is laid on a bottom plate of the sewage treatment device and connected to a negative pole of a power supply to be used as a cathode.
According to the present invention, preferably, the barrier strip is a stainless steel strip.
According to the present invention, preferably, the frame is made of stainless steel.
According to the present invention, preferably, the angle between the arrangement directions of the barrier ribs of the two adjacent layers of structures is 90 ° or 45 °.
The number of layers of the electro-adsorption coalescence filler can be determined according to the practical application scene, and can be any integer from 5 to 30 as a preferable scheme.
A second aspect of the present invention provides an electro-adsorption coalescence sewage treatment apparatus, including: the bottom plate is arranged on the lower portion of the electro-adsorption coalescence filler, the electro-adsorption coalescence filler is connected with the positive pole of a power supply, and the bottom plate is connected with the negative pole of the power supply.
Oil drops and suspended particles in the oily sewage generally have negative charges, and can apply the action of an electric field to generate directional motion according to the charge property of the oil drops and the suspended particles. By utilizing the principle, the electro-adsorption coalescence filler is applied with positive electricity as an anode, oil drops with negative electricity are carried in inlet water, the inlet water moves towards the anode in an electric field formed by a cathode and the electro-adsorption coalescence filler, namely the electro-adsorption coalescence filler, the tiny oil drops are adsorbed on the electro-adsorption coalescence filler and then collide with each other and coalesce, the particle size is gradually increased, the coarse granulation process is completed, the floating speed is accelerated after the small oil drops are coalesced into large oil drops, so that oil-water separation is easy, and the coalesced large oil drops float upwards from the gaps of the electro-adsorption coalescence filler to the surface of the sewage to be removed under the action of upward water flow.
According to the present invention, preferably, the bottom plate is a stainless steel plate.
The third aspect of the present invention provides a sewage treatment method using the electro-adsorption coalescence sewage treatment apparatus, the method comprising: sewage enters from a gap between the electro-adsorption coalescence filler and the bottom plate and passes through the electro-adsorption coalescence filler from bottom to top.
Example 1
As shown in fig. 1 to fig. 3, the present embodiment provides an electro-adsorption coalescing filler 1, where the electro-adsorption coalescing filler 1 includes 5 layers of structures stacked on each other, each layer of structure includes a frame body 2 and barrier ribs 3 arranged on the frame body at intervals, and the intervals of the barrier ribs 3 of each layer of structure increase in sequence along the vertical direction, the barrier ribs 3 of adjacent two layers of structures are arranged in different directions, and a supporting structure 4 is arranged between the adjacent two layers of structures; the barrier strips 3 are stainless steel strips, and the included angle of the arrangement directions of the barrier strips 3 of the adjacent two-layer structure is 90 degrees or 45 degrees.
Example 2
As shown in fig. 1, the present embodiment provides an electro-adsorption coalescence sewage treatment apparatus, which includes: the electro-adsorption coalescing filler 1 of embodiment 1 and a bottom plate, the bottom plate being disposed at a lower portion of the electro-adsorption coalescing filler 1, the electro-adsorption coalescing filler 1 being connected to a positive electrode of a power supply, the bottom plate being connected to a negative electrode of the power supply; wherein the bottom plate is a stainless steel plate;
when the device works, sewage enters from a gap between the electro-adsorption coalescence filler 1 and the bottom plate and passes through the electro-adsorption coalescence filler 1 from bottom to top; because the oil drops with negative electricity are carried in the sewage, the oil drops move towards the anode in an electric field formed by the bottom plate and the electro-adsorption coalescence filler 1, namely the electro-adsorption coalescence filler 1, the tiny oil drops collide with each other and coalesce after being adsorbed on the electro-adsorption coalescence filler 1, the particle size gradually increases, the coarse granulation process is completed, the floating speed is accelerated after the small oil drops are coalesced into large oil drops, and therefore oil-water separation is easy, and the coalesced large oil drops float upwards from the gaps of the electro-adsorption coalescence filler 1 to the surface of the sewage to be removed under the action of upward water flow.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (7)
1. The utility model provides an electric adsorption coalescence filler, its characterized in that, this electric adsorption coalescence filler is including the multilayer structure who stacks each other, every layer structure include the framework with set up in the spacer strip of interval arrangement in the framework, and increase in proper order along the interval of the spacer strip of every layer structure of vertical direction, the spacer strip array orientation of adjacent two-layer structure is different, is provided with bearing structure between adjacent two-layer structure.
2. The electro-adsorption coalescing packing of claim 1, wherein the spacer bars are stainless steel plate bars.
3. The electro-adsorption coalescing packing of claim 1, wherein the frame is stainless steel.
4. The electro-adsorption coalescing filler according to claim 1, wherein the angle between the alignment directions of the barrier ribs of the adjacent two-layer structure is 90 ° or 45 °.
5. An electro-adsorption coalescence sewage treatment device, characterized in that, the device includes: the electro-adsorption coalescing filler according to any one of claims 1-4 and a bottom plate, the bottom plate being disposed below the electro-adsorption coalescing filler, the electro-adsorption coalescing filler being connected to a positive power supply and the bottom plate being connected to a negative power supply.
6. The electro-adsorption coalescing sewage treatment device of claim 5 wherein the base plate is a stainless steel plate.
7. A method for sewage treatment using the electro-adsorption coalescence sewage treatment apparatus of claim 5 or 6, comprising: sewage enters from a gap between the electro-adsorption coalescence filler and the bottom plate and passes through the electro-adsorption coalescence filler from bottom to top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710891890.3A CN109553166B (en) | 2017-09-27 | 2017-09-27 | Electro-adsorption coalescence filler, electro-adsorption coalescence sewage treatment device and method |
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| CN201710891890.3A CN109553166B (en) | 2017-09-27 | 2017-09-27 | Electro-adsorption coalescence filler, electro-adsorption coalescence sewage treatment device and method |
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| CN109553166A CN109553166A (en) | 2019-04-02 |
| CN109553166B true CN109553166B (en) | 2021-10-29 |
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| CN111072191A (en) * | 2020-01-03 | 2020-04-28 | 浙江钰烯腐蚀控制股份有限公司 | Electrocatalytic oxidation comprehensive treatment process and device for polymer-containing waste oil |
| US20240300832A1 (en) * | 2021-07-07 | 2024-09-12 | China Petroleum & Chemical Corporation | Oil-water mixture treatment device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999346A (en) * | 2007-01-11 | 2007-07-18 | 常州爱思特净化设备有限公司 | Liquid treatment module |
| CN101857286A (en) * | 2010-06-29 | 2010-10-13 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Folded plate coalescent deoiling filler |
| CN206126913U (en) * | 2016-10-18 | 2017-04-26 | 上海明罗石油天然气工程有限公司 | Dirty water separator of coalescent pack is equipped with |
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2017
- 2017-09-27 CN CN201710891890.3A patent/CN109553166B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100999346A (en) * | 2007-01-11 | 2007-07-18 | 常州爱思特净化设备有限公司 | Liquid treatment module |
| CN101857286A (en) * | 2010-06-29 | 2010-10-13 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Folded plate coalescent deoiling filler |
| CN206126913U (en) * | 2016-10-18 | 2017-04-26 | 上海明罗石油天然气工程有限公司 | Dirty water separator of coalescent pack is equipped with |
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