CN220684955U - System for reducing electroosmosis dehydration energy consumption - Google Patents
System for reducing electroosmosis dehydration energy consumption Download PDFInfo
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- CN220684955U CN220684955U CN202321932808.4U CN202321932808U CN220684955U CN 220684955 U CN220684955 U CN 220684955U CN 202321932808 U CN202321932808 U CN 202321932808U CN 220684955 U CN220684955 U CN 220684955U
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- 230000018044 dehydration Effects 0.000 title claims abstract description 69
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 69
- 238000005265 energy consumption Methods 0.000 title claims abstract description 25
- 238000005370 electroosmosis Methods 0.000 title abstract description 25
- 208000005156 Dehydration Diseases 0.000 claims abstract description 68
- 239000010802 sludge Substances 0.000 claims abstract description 59
- 229910000575 Ir alloy Inorganic materials 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical compound [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 claims description 8
- 238000000855 fermentation Methods 0.000 abstract description 2
- 230000004151 fermentation Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 238000005457 optimization Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000008570 general process Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Treatment Of Sludge (AREA)
Abstract
The utility model relates to the technical field of sludge treatment and discloses a system for reducing electroosmosis dewatering energy consumption, which comprises an operation platform, and a primary dewatering device and a sludge collecting and conveying device which are respectively and independently arranged on the operation platform, wherein the bottom of the operation platform is provided with the electroosmosis dewatering device, a discharge port of the primary dewatering device is connected with a feed port of the sludge collecting and conveying device, and the discharge port of the sludge collecting and conveying device vertically penetrates through the operation platform and is connected with the feed port of the electroosmosis dewatering device, so that sludge completely enters the electroosmosis dewatering device through the sludge collecting and conveying device. According to the utility model, the sludge after primary dehydration is directly transmitted into the electroosmosis dehydration device through the sludge collecting and conveying device without storage and fermentation, so that the sludge conductivity is low, and the electroosmosis dehydration energy consumption is reduced.
Description
Technical Field
The utility model relates to the technical field of sludge treatment, in particular to a system for reducing electroosmosis dewatering energy consumption.
Background
With the rapid development of the economy and the continuous improvement of the urban level in China, the number of sewage treatment facilities is also rapidly increased, and a large amount of excess sludge is generated by the sewage treatment facilities. At present, the annual output of the sludge in China is over 5000 ten thousand tons (the water content is 80%), and the average composite growth rate in recent years reaches 5%. At present, various disposal methods such as landfill, land utilization, incineration, building material utilization and the like require that the water content of the sludge is 60% or less, but the water content of the sludge is generally about 80% after conventional mechanical dehydration, so that the sludge must be deeply dehydrated before being disposed of.
The electro-osmosis dehydration technology is an emerging deep dehydration technology for sludge, and the basic principle is that the applied direct current electric field is utilized to make negatively charged sludge particles and positively charged water move in opposite directions, so as to realize mud-water separation in the sludge. The water content of the sludge can be reduced from 80% to 60% or less by electroosmosis dehydration, and the energy consumption is generally between 0.06 and 0.46 kW.h/kg of water to be removed. In the dehydration section with the sludge water content of 80-60%, the electric conductivity of the sludge is the most influenced on the electroosmosis dehydration energy consumption, and the larger the electric conductivity is, the higher the energy consumption is.
In the electroosmotic dehydration process design, as shown in fig. 2, the general process flow is "a primary dehydration device (including a spiral shell dehydrator, a belt dehydrator, a centrifugal dehydrator and the like) -a sludge collection and conveying device-a sludge storage bin-a first conveying device (a sludge pump, a screw conveyor and the like) -an electroosmotic dehydration device".
After primary dehydration by mechanical equipment such as a spiral-pile dehydrator, a belt dehydrator, a centrifugal dehydrator and the like, the electric conductivity of the sludge is generally about 400us/cm, the electric conductivity of the sludge is increased to 500-600us/cm after spiral conveying, and the electric conductivity of the sludge is increased to 900-1000us/cm after extrusion conveying by a sludge pump; the conductivity rises at the highest speed in the first 4 hours after being stored in a storage bin, and reaches 1900-2000us/cm in 24 hours, and the subsequent rising speed is slower.
In a dehydration section with the sludge water content of 80 to 60 percent, when the sludge conductivity is increased from 400us/cm to 1000us/cm, the energy consumption required for removing the unit mass of water is increased by about 30 percent; as the conductivity of the sludge increases from 400us/cm to 2000us/cm, the energy consumption required to remove the unit mass of water increases by approximately 70%.
Disclosure of Invention
The utility model provides a system for reducing electroosmotic dehydration energy consumption, which is used for reducing electroosmotic dehydration energy consumption.
The utility model is realized by the following technical scheme:
the utility model provides a reduce system of electro-osmotic dehydration energy consumption, is in including operation platform and independent setting respectively once dewatering device and the mud collection conveyor on the operation platform, operation platform's bottom is provided with electro-osmotic dehydration device, wherein, once dewatering device's discharge gate with mud collection conveyor's feed inlet is connected, makes the mud that passes through after once dewatering device dewaters loops through once dewatering device's discharge gate and mud collection conveyor's feed inlet all enter into in the mud collection conveyor, mud collection conveyor's discharge gate runs through perpendicularly operation platform with electro-osmotic dehydration device's feed inlet is connected, makes mud passes through mud collection conveyor all enters into in the electro-osmotic dehydration device.
As optimization, the primary dewatering device is a spiral shell stacking dewatering machine.
Preferably, the primary dewatering device is a belt type dewatering machine.
As optimization, the primary dewatering device is a centrifugal dewatering machine.
As optimization, the sludge collecting and conveying device is a screw conveyor.
Preferably, the electro-osmotic dehydration device is a rotary drum electro-osmotic dehydration device.
As optimization, the rotary drum of the rotary drum type electro-osmotic dehydration device is used as an anode, and the caterpillar of the rotary drum type electro-osmotic dehydration device is used as a cathode.
Preferably, the surface of the rotating roller is coated with a ruthenium iridium alloy coating.
Preferably, the thickness of the ruthenium iridium alloy coating is 5-8 mu m.
Compared with the prior art, the utility model has the following advantages and beneficial effects:
1. according to the utility model, the sludge subjected to primary dehydration is directly transmitted into the electroosmosis dehydration device through the sludge collecting and conveying device without storage and fermentation, so that the sludge has low conductivity, and the electroosmosis dehydration energy consumption is reduced;
2. the primary dewatered sludge is not extruded and conveyed by a sludge pump, so that the sludge conductivity is low, and the electroosmosis dewatering energy consumption is reduced;
3. the utility model eliminates the sludge bin and the conveying equipment between the sludge bin and the electroosmosis dehydration device, thereby reducing equipment investment and occupied area and equipment maintenance.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model. In the drawings:
FIG. 1 is a schematic diagram of the structural layout of an electroosmotic system of the present utility model;
fig. 2 is a schematic diagram showing the structural layout of an electro-osmotic dehydration system according to the prior art.
In the drawings, the reference numerals and corresponding part names:
i-primary dewatering device, II-sludge collecting and conveying device, III-electroosmosis dewatering device, IV-operation platform, V-sludge bin and VI-first conveying device.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. However, it will be apparent to one of ordinary skill in the art that: no such specific details are necessary to practice the utility model. In other instances, well-known structures, circuits, materials, or methods have not been described in detail in order not to obscure the utility model.
Throughout the specification, references to "one embodiment," "an embodiment," "one example," or "an example" mean: a particular feature, structure, or characteristic described in connection with the embodiment or example is included within at least one embodiment of the utility model. Thus, the appearances of the phrases "in one embodiment," "in an example," or "in an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Moreover, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and that the illustrations are not necessarily drawn to scale. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the description of the present utility model, the terms "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present utility model.
This embodiment 1 provides a system for reducing electroosmosis dehydration energy consumption, as shown in fig. 1, including operation platform IV and respectively independent setting is in primary dewatering device I and mud collection conveyor II on operation platform IV, operation platform IV's bottom is provided with electroosmosis dewatering device III, wherein, primary dewatering device I's discharge gate with mud collection conveyor II's feed inlet is connected so that the mud that is dehydrated through primary dewatering device I loops through primary dewatering device I's discharge gate and mud collection conveyor II's feed inlet all enter into in the mud collection conveyor II, and here primary dewatering device I's discharge gate and mud collection conveyor II's feed inlet are connected can be the connection on the machinery, also can understand that primary dewatering device I's discharge gate and mud collection conveyor II's feed inlet just set up, if mud collection conveyor II's feed inlet up, primary dewatering device I's discharge gate just set up just above mud collection conveyor II's feed inlet, need not to carry out two with the mechanical connection with two feed inlets.
The primary dewatering device I can be any existing dewatering device, such as a spiral-pile dewatering device, a belt dewatering device or a centrifugal dewatering device, the sludge is dewatered to the water content of about 80%, the sludge collecting and conveying device II is a screw conveyor, the discharged materials of the primary dewatering device (such as the belt dewatering device) with a wider outlet are collected together, and then gravity falls into the inlet of the electroosmosis dewatering device 3 below.
The primary dewatering device I and the sludge collecting and conveying device II can be of any type in the market, and are not described herein.
Perpendicular to operation platform IV's surface runs through operation platform IV is provided with reserved hole, sludge collection conveyor II's discharge gate passes operation platform IV's reserved hole with the feed inlet of electro-osmotic dehydration device III is connected (electro-osmotic dehydration device's feed inlet is located the discharge gate under the sludge collection conveyor, makes sludge pass through sludge collection conveyor II all enters into in the electro-osmotic dehydration device III, here sludge collection conveyor II's discharge gate with electro-osmotic dehydration device III's feed inlet connection can be the connection on the machinery, also can understand that sludge collection conveyor II's discharge gate and electro-osmotic dehydration device III's feed inlet are just set up, if electro-osmotic dehydration device III's feed inlet is up, then sludge collection conveyor II's discharge gate just set up just above electro-osmotic dehydration device III's feed inlet, need not to carry out the connection on the machinery with the discharge gate of two devices with the feed inlet.
In this embodiment, the electro-osmotic dehydration device III is a drum-type electro-osmotic dehydration device III, a rotating drum of the drum-type electro-osmotic dehydration device III is an anode, and a crawler of the drum-type electro-osmotic dehydration device III is a cathode. The electro-osmotic dewatering device III is in the prior art, and can refer to the structure of the drum-type electro-osmotic dewatering device III with the patent application number of 202122037883.1 and the patent name of 'an anode structure and sludge drying equipment', and also can refer to the structure of the drum-type electro-osmotic dewatering device III with the patent application number of 201180005854.3 and the patent name of 'electricity saving by reducing the interval between the anode and the cathode', so that the specific structure of the electro-osmotic dewatering device is not repeated.
The surface of the rotary roller is coated with a ruthenium-iridium alloy coating, and the thickness of the ruthenium-iridium alloy coating is 5-8 mu m. The ruthenium-iridium alloy coating is coated on the surface of the rotary roller, so that the conductive plate on the surface of the rotary roller can be ensured to have enough structural strength and wear resistance, the ruthenium-iridium alloy coating cannot be too thick or too thin, and when the thickness of the conductive plate is set to be 5-8 mu m, the service life of the conductive plate can be correspondingly prolonged by 3 times without influencing electroosmosis efficiency of sludge.
The electro-osmotic dehydration device 3 adopts a rotary drum type electro-osmotic dehydration device. The anode of the rotary drum type electroosmosis dehydration device adopts a rotary drum, the cathode of the rotary drum type electroosmosis dehydration device adopts a crawler type, the residence time is more than 10min, the water content of the inlet mud is 78 to 85 percent, and the water content of the outlet mud is 55 to 65 percent.
Specifically, the residual sludge with the water content of 97% -99.2% is dehydrated by a primary dehydration device, the water content is reduced to about 80%, and then the residual sludge is collected together by a sludge collecting device (for example, the primary dehydration device adopts a centrifuge or a single spiral shell stacking machine to cancel the sludge collecting device), and then gravity falls into an electroosmosis dehydration device, and the water content reaches 60% after electroosmosis dehydration, and can be further subjected to drying treatment or outward transportation treatment.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. The utility model provides a reduce system of electro-osmotic dehydration energy consumption, its characterized in that, is in including operation platform and independent setting respectively once dewatering device and the mud collection conveyor on the operation platform, operation platform's bottom is provided with electro-osmotic dehydration device, wherein, once dewatering device's discharge gate with mud collection conveyor's feed inlet is connected, makes the mud that is passed through after once dewatering device dewaters loops through once dewatering device's discharge gate and mud collection conveyor's feed inlet all enter into in the mud collection conveyor, mud collection conveyor's discharge gate runs through perpendicularly operation platform with electro-osmotic dehydration device's feed inlet is connected, makes mud passes through mud collection conveyor all enters into in the electro-osmotic dehydration device.
2. The system for reducing electroosmotic dehydration energy consumption of claim 1 wherein said primary dehydration means is a lap screw dehydrator.
3. The system for reducing electroosmotic dehydration energy consumption of claim 1 wherein said primary dehydration means is a belt dehydrator.
4. The system for reducing electroosmotic dehydration energy consumption of claim 1 wherein said primary dehydration means is a centrifugal dehydrator.
5. The system for reducing electroosmotic dewatering energy consumption of claim 1, wherein said sludge collection conveyor is a screw conveyor.
6. A system for reducing electroosmotic dehydration energy consumption according to claim 1 wherein said electroosmotic dehydration device is a rotary drum electroosmotic dehydration device.
7. The system for reducing energy consumption of electro-osmotic dehydration according to claim 6, wherein the rotating drum of the drum type electro-osmotic dehydration device is an anode and the caterpillar of the drum type electro-osmotic dehydration device is a cathode.
8. A system for reducing electroosmotic dehydration energy consumption in accordance with claim 7 wherein the surface of said rotating drum is coated with a ruthenium iridium alloy coating.
9. The system for reducing electroosmotic dehydration energy consumption according to claim 8, wherein the ruthenium iridium alloy coating has a thickness of 5 to 8 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321932808.4U CN220684955U (en) | 2023-07-21 | 2023-07-21 | System for reducing electroosmosis dehydration energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321932808.4U CN220684955U (en) | 2023-07-21 | 2023-07-21 | System for reducing electroosmosis dehydration energy consumption |
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| Publication Number | Publication Date |
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| CN220684955U true CN220684955U (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202321932808.4U Active CN220684955U (en) | 2023-07-21 | 2023-07-21 | System for reducing electroosmosis dehydration energy consumption |
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| Country | Link |
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2023
- 2023-07-21 CN CN202321932808.4U patent/CN220684955U/en active Active
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