CN213680156U - Papermaking sewage pretreatment device - Google Patents
Papermaking sewage pretreatment device Download PDFInfo
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- CN213680156U CN213680156U CN202022373305.0U CN202022373305U CN213680156U CN 213680156 U CN213680156 U CN 213680156U CN 202022373305 U CN202022373305 U CN 202022373305U CN 213680156 U CN213680156 U CN 213680156U
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Abstract
The utility model discloses a papermaking sewage pretreatment device belongs to the sewage treatment field. Including sewage collecting tank and equalizing basin, be equipped with first filtering ponds between sewage collecting tank and the equalizing basin, the liquid outlet of equalizing basin has the second filtering ponds through the pipe connection, and the liquid outlet of second filtering ponds has the air supporting intake chamber through the pipe connection, and the liquid outlet of air supporting intake chamber has the air supporting machine through the pipe connection, and the one end that is close to the liquid outlet in the equalizing basin is equipped with adjusting device. The movable plate in the adjusting plate can be selectively opened according to the sewage property of each section of papermaking sewage, sewage treatment on sewage with different slurry concentrations and particle concentrations is realized, the range of sewage pretreatment is enlarged, and the utilization rate of the device is improved.
Description
Technical Field
The utility model relates to a sewage treatment, concretely relates to papermaking sewage pretreatment device.
Background
The pulping in the paper industry includes alkaline pulping, chemimechanical pulping and mechanical pulping. The paper making industry mostly adopts straw, wood pulp and the like as paper making raw materials, so that the paper making sewage comprises old settleable suspended matters and non-symmetric suspended matters, such as fibers and fiber fine materials, meanwhile, the interior of the paper making sewage also comprises degradable organic matters such as hemicellulose, methanol, acetic acid, formic acid, saccharides and the like with low molecular weight, and also refractory substances which are distributed in the fiber raw materials and contain lignin and macromolecular carbon compounds. The pretreatment process of the papermaking sewage mainly comprises a grating, a screen, a fiber recovery system, water quantity regulation, water quality regulation and the like. Different pretreatment measures can be adopted according to different paper industry sewage qualities to remove a part of pollutants and improve the sewage quality, so that the treatment effect of the whole sewage treatment system can reach the best. While the sewage in paper making industry contains fine suspended matters such as bark, wood chips, plastics, paper pulp fiber chips and the like, for example, the sewage discharged by a pulp mill using wood as a raw material in the material preparation process often contains bark, wood chips and the like, a large amount of white water is generated in the working procedures of paper making and the like in the paper making process, and the white water contains high fiber concentration. The substances can damage a water pump and the like to influence a main body treatment process, and particularly seriously block a water distribution system of a UASB (upflow anaerobic sludge blanket), a hydrolytic acidification process and the like in biological treatment, so that the substances are intercepted before entering the water pump and the main body treatment system, a grid is arranged to intercept large suspended matters, and a screen is arranged to intercept fine suspended matters. And the treatment cost of lignin derivatives and polyphenols chemical substances generated in the pulping process is higher and the efficiency is low, so that the COD value of water is seriously exceeded.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a can retrieve the cellulose in the papermaking sewage, produce electric lignin and derivative, reduce follow-up sewage treatment's load, improve sewage treatment effect papermaking sewage pretreatment device.
In order to achieve the above purpose, the present invention is realized by the following technical solutions:
a papermaking sewage pretreatment device comprises a sewage collecting tank and an adjusting tank, wherein a grid is arranged in the sewage collecting tank, a first filtering tank is arranged between the sewage collecting tank and the adjusting tank, a liquid outlet of the adjusting tank is connected with a second filtering tank through a pipeline, a liquid outlet of the second filtering tank is connected with an air floatation water inlet tank through a pipeline, a liquid outlet of the air floatation water inlet tank is connected with an air floatation machine through a pipeline, and a sludge discharge port of the air floatation machine is connected with a sludge tank for collecting sludge through a pipeline; a first gravity-flow screen is arranged in the first filtering tank, and a second gravity-flow screen is arranged in the second filtering tank; a dosing device is arranged at the top of the regulating tank, a stirring device is arranged in the regulating tank, and a regulating device is arranged at one end, close to the liquid outlet, in the regulating tank;
the adjusting device comprises a first filter plate and a second filter plate, and the first filter plate and the second filter plate are vertically arranged in parallel; the filter holes between the first filter plate and the second filter plate correspond to each other; an adjusting plate is arranged between the first filter plate and the second filter plate and comprises a fixed plate and a plurality of movable plates, two ends of the movable plates are respectively and rotatably fixed on the first filter plate and the fixed plate, and the fixed plate can move up and down; the movable plate is a screen mesh type movable plate.
Further, fixed plate bottom is equipped with elevating gear, elevating gear include the motor and with the elevating platform that the motor is connected, the elevating platform is right trapezoid, the hypotenuse of elevating platform with the bottom contact of fixed plate is connected.
Furthermore, a through hole is formed in the top of the adjusting tank, scales are arranged at the upper end of the fixing plate, and the upper end of the fixing plate penetrates through the through hole and runs up and down in the through hole.
Further, the grid is a rotary mechanical grid, and the grid is obliquely arranged in the sewage collecting tank.
Furthermore, a lifting pump is arranged between the liquid outlet of the air floatation water inlet tank and the air floatation machine.
Furthermore, a slurry outlet is formed in the bottom of the first filtering tank.
Furthermore, the bottom of the adjusting tank and the second filtering tank are both provided with sludge outlets, and the sludge outlets are connected with the sludge tank.
Furthermore, the filtering holes of the first gravity-flow screen and the filtering holes of the second gravity-flow screen are 0.15-0.25 mm.
The utility model discloses papermaking sewage pretreatment device, its beneficial effect lies in:
(1) through being equipped with grid and two-stage filtering ponds, the impurity granule can be filtered to the grid, and the sewage that contains the thick liquids after the filtration collects a large amount of fibre through filtering in the first filtering pond. And after flocculation is generated by adjustment, the wastewater is filtered by an adjusting device in the adjusting tank and a second filtering tank, so that the COD in the wastewater can be effectively reduced, and the subsequent wastewater treatment efficiency is improved.
(2) Among the adjusting device, adopt mobilizable regulating plate, according to the sewage nature of each workshop section of papermaking sewage, selectively open the fly leaf in the regulating plate, realize carrying out sewage treatment to the sewage of different thick liquids concentration, particle concentration, enlarge the scope of sewage preliminary treatment, improve the rate of utilization of device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural diagram of the lifting device;
FIG. 3 is a schematic diagram of the structure of the movable plate inclining;
1, a sewage collecting tank, 2, an adjusting tank, 3, a first filtering tank, 4, a second filtering tank, 5, an air flotation water inlet tank, 6, an air flotation machine, 7, a sludge tank, 8, a first gravity-flow screen, 9, a second gravity-flow screen, 10, a dosing device, 11, a stirring device and 12 adjusting devices;
301 a slurry outlet;
1201 first filter plate, 1202 second filter plate, 1203 fixed plate, 1204 movable plate, 1205 motor, 1206 elevating platform, 1207 through-hole, 1208 mud export.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
Example 1
A papermaking sewage pretreatment device is shown in figures 1-3 and comprises a sewage collection tank 1 and an adjusting tank 2, wherein a grid is arranged in the sewage collection tank 1, a first filtering tank 3 is arranged between the sewage collection tank 1 and the adjusting tank 2, a liquid outlet of the adjusting tank 2 is connected with a second filtering tank 4 through a pipeline, a liquid outlet of the second filtering tank 4 is connected with an air floatation water inlet tank 5 through a pipeline, a liquid outlet of the air floatation water inlet tank 5 is connected with an air floatation machine 6 through a pipeline, and a sludge outlet of the air floatation machine 6 is connected with a sludge tank 7 for collecting sludge through a pipeline; a first gravity-flow screen 8 is arranged in the first filtering tank 3, and a second gravity-flow screen 9 is arranged in the second filtering tank 4; the top of the adjusting tank 2 is provided with a dosing device 10, and the dosing device 10 is mainly used for adding a flocculating agent. A stirring device 11 is arranged in the adjusting tank 2, and an adjusting device 12 is arranged at one end, close to the liquid outlet, in the adjusting tank 2;
the adjusting device 12 comprises a first filter plate 1201 and a second filter plate 1202, wherein the first filter plate 1201 and the second filter plate 1202 are vertically arranged in parallel; the filter holes between the first filter plate 1201 and the second filter plate 1202 correspond to each other; an adjusting plate is arranged between the first filter plate 1201 and the second filter plate 1202, the adjusting plate comprises a fixed plate 1203 and a plurality of movable plates 1204, two ends of the plurality of movable plates 1204 are respectively and rotatably fixed on the first filter plate 1201 and the fixed plate 1203, and the fixed plate 1203 can move up and down; the movable plate 1204 is a mesh-type movable plate 1204.
The utility model discloses in, the filtration pore on the filtration pore of first gravity flow screen cloth 8, movable plate 1204 with the filtration pore of second gravity flow screen cloth 9 reduces in proper order. The filter holes in the first filter plate 1201 and the second filter plate 1202 are large, so that a water flow path with a large flow rate is formed between the first aluminum plate and the second filter plate 1202. The distance between the filtering holes in the first gravity-flow type screen 8 is 0.15-0.25 mm, the fiber interception effect is optimal, the requirement of the water passing amount can be met, and the purpose of improving the recovery rate can be achieved. The aperture of the mesh holes on the movable plate 1204 is not smaller than the aperture of the filter holes in the first gravity-flow type screen 8, the filter screen of the movable plate 1204 can filter a large amount of flocculation and sedimentation in the adjusting tank 2, when a small amount of sedimentation exists, the movable plate 1204 can be put down, and sewage directly enters the second filter tank 4 through the first filter plate 1201 and the second filter plate 1202 for filtering, so that the sewage treatment device can adapt to various conditions.
The utility model discloses in, fixed plate 1203 bottom is equipped with elevating gear, elevating gear include motor 1205 and with the elevating platform 1206 that motor 1205 is connected, the elevating platform 1206 is right trapezoid, the hypotenuse of elevating platform 1206 with the bottom contact of fixed plate 1203 is connected. A through hole 1207 is formed in the top of the adjusting tank 2, scales are arranged at the upper end of the fixing plate 1203, and the upper end of the fixing plate 1203 passes through the through hole 1207 and runs up and down in the through hole 1207. Through the rotation of external control button control motor 1205, be equipped with the telescopic link in the pivot of motor 1205, the telescopic link is connected with elevating platform 1206. When the sewage containing less impurities does not need to be filtered in the adjusting tank 2, the movable plates 1204 are arranged in parallel, so that the first filter plate 1201 and the second filter plate 1202 are communicated with each other. When sewage contains more needs of impurity and filters in the equalizing basin 2, open motor 1205 and make the telescopic link extension and promote the elevating platform 1206 move ahead, fixed plate 1203 rises along with the inclined plane of elevating platform 1206 to time fly leaf 1204 slope forms the filtration passageway, reaches the filtration. Meanwhile, filtration in different degrees can be started according to specific sewage conditions. The bottom of the lifting platform 1206 is provided with a sliding chute, so that the lifting platform is convenient to operate.
The utility model discloses in, the grid is rotation mechanical grid, just the grid slope is placed sewage collecting pit 1. The rotary mechanical grating is a grating which can be continuously and automatically cleaned. A group of closed rake tooth chains are assembled by a plurality of same rake tooth machine parts in a staggered and parallel mode, and continuous top-to-bottom circular motion is formed by a group of grooved wheels and chains under the driving of a motor and a speed reducer, so that the purpose of continuously removing grids is achieved. When the rake teeth chain is transferred to the upper part and back part of the equipment, the parallel rake teeth rows can be dislocated due to the guide action of the chain wheel and the bent rail, so that solid dirt falls into the slag groove by self weight, and when the dirt is not completely fallen off, the dirt is easily brought into a channel behind the grid by the grid.
The utility model discloses in, be equipped with the elevator pump between the liquid outlet of air supporting intake chamber 5 and the air supporting machine 6. The air floating machine 6 is a water treatment device which generates a large amount of micro bubbles in water by an air dissolving system, leads the air to be attached to suspended particles in a highly dispersed micro bubble form, causes the density to be less than the water, and leads the air to float on the water surface by utilizing the buoyancy principle, thereby realizing solid-liquid separation.
The utility model discloses in, the bottom is equipped with thick liquid export 301 in the first filtering ponds 3, and the thick liquid is mainly the sediment material. The bottom of the adjusting tank 2 and the second filtering tank 4 are both provided with a sludge outlet 1208, and the sludge outlet 1208 is connected with the sludge tank 7.
In the utility model, after the papermaking sewage passes through the grating in the sewage collecting tank 1 and filters impurities, the sewage enters the first filtering tank 3, fine fibers, lignin derivatives and the like are intercepted by the first gravity-flow type screen 8 in the first filtering tank 3, and then the fibers are collected through the slurry outlet 301; while the sewage enters the regulating tank 2. When the sewage contains less impurities and does not need to be filtered in the adjusting tank 2, the movable plates 1204 are arranged in parallel, so that the first filter plate 1201 and the second filter plate 1202 are communicated, the sewage directly enters the second filter tank 4 after being flocculated in the adjusting tank 2, solid-liquid separation is carried out through the second gravity-flow type screen 9, the sewage enters the air floatation water inlet tank 5 again, solid-liquid separation is carried out again through the air floatation machine 6, and micro molecules in the sewage are separated.
When sewage contains more needs of impurity and filters in the equalizing basin 2, open motor 1205 and make the telescopic link extension and promote the elevating platform 1206 move ahead, fixed plate 1203 rises along with the inclined plane of elevating platform 1206 to time fly leaf 1204 slope forms the filtration passageway, reaches the filtration. Meanwhile, filtration in different degrees can be started according to specific sewage conditions.
The sludge of each device enters a sludge tank 7 through a pipeline to be collected and treated.
The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the above embodiments are only applicable to help understand the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (8)
1. The utility model provides a papermaking sewage pretreatment device, includes sewage collecting pit and equalizing basin, its characterized in that: a grid is arranged in the sewage collecting tank, a first filtering tank is arranged between the sewage collecting tank and the regulating tank, the liquid outlet of the regulating tank is connected with a second filtering tank through a pipeline, the liquid outlet of the second filtering tank is connected with an air floatation water inlet tank through a pipeline, the liquid outlet of the air floatation water inlet tank is connected with an air floatation machine through a pipeline, and a sludge discharge port of the air floatation machine is connected with a sludge tank for collecting sludge through a pipeline; a first gravity-flow screen is arranged in the first filtering tank, and a second gravity-flow screen is arranged in the second filtering tank; a dosing device is arranged at the top of the regulating tank, a stirring device is arranged in the regulating tank, and a regulating device is arranged at one end, close to the liquid outlet, in the regulating tank;
the adjusting device comprises a first filter plate and a second filter plate, and the first filter plate and the second filter plate are vertically arranged in parallel; the filter holes between the first filter plate and the second filter plate correspond to each other; an adjusting plate is arranged between the first filter plate and the second filter plate and comprises a fixed plate and a plurality of movable plates, two ends of the movable plates are respectively and rotatably fixed on the first filter plate and the fixed plate, and the fixed plate can move up and down; the movable plate is a screen mesh type movable plate.
2. The papermaking sewage pretreatment device according to claim 1, characterized in that: the fixed plate bottom is equipped with elevating gear, elevating gear include the motor and with the elevating platform that the motor is connected, the elevating platform is right trapezoid, the hypotenuse of elevating platform with the bottom contact of fixed plate is connected.
3. The papermaking sewage pretreatment device according to claim 1, characterized in that: the top of the adjusting tank is provided with a through hole, the upper end of the fixing plate is provided with scales, and the upper end of the fixing plate penetrates through the through hole and runs up and down in the through hole.
4. The papermaking sewage pretreatment device according to claim 1, characterized in that: the grid is a rotary mechanical grid, and the grid is obliquely arranged in the sewage collecting tank.
5. The papermaking sewage pretreatment device according to claim 1, characterized in that: and a lifting pump is arranged between the liquid outlet of the air floatation water inlet tank and the air floatation machine.
6. The papermaking sewage pretreatment device according to claim 1, characterized in that: and a slurry outlet is formed in the bottom of the first filtering tank.
7. The papermaking sewage pretreatment device according to claim 1, characterized in that: and the bottom of the adjusting tank and the second filtering tank are both provided with sludge outlets, and the sludge outlets are connected with the sludge tank.
8. The papermaking sewage pretreatment device according to claim 1, characterized in that: the filtering holes of the first gravity-flow screen and the filtering holes of the second gravity-flow screen are 0.15-0.25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373305.0U CN213680156U (en) | 2020-10-21 | 2020-10-21 | Papermaking sewage pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022373305.0U CN213680156U (en) | 2020-10-21 | 2020-10-21 | Papermaking sewage pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213680156U true CN213680156U (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022373305.0U Active CN213680156U (en) | 2020-10-21 | 2020-10-21 | Papermaking sewage pretreatment device |
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| Country | Link |
|---|---|
| CN (1) | CN213680156U (en) |
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2020
- 2020-10-21 CN CN202022373305.0U patent/CN213680156U/en active Active
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