CN216236209U - Reclaimed water recycling system for papermaking production - Google Patents
Reclaimed water recycling system for papermaking production Download PDFInfo
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- CN216236209U CN216236209U CN202122942269.XU CN202122942269U CN216236209U CN 216236209 U CN216236209 U CN 216236209U CN 202122942269 U CN202122942269 U CN 202122942269U CN 216236209 U CN216236209 U CN 216236209U
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Abstract
The utility model provides a reclaimed water recycling system for papermaking, which comprises a wastewater treatment part, a reclaimed water storage part and a reclaimed water recycling part, wherein a water inlet of the wastewater treatment part is connected with a wastewater pipe after biochemical treatment, a water outlet of the wastewater treatment part is connected with the reclaimed water storage part, the reclaimed water storage part is connected with the reclaimed water recycling part, and the reclaimed water recycling part comprises a mesh part recycling pipe point and a squeezing part recycling pipe point of a papermaking production line. According to the utility model, by recycling reclaimed water, part of fresh water is replaced by reclaimed water, the aim of reducing the water consumption by 3 tons per ton of paper is achieved, the reuse rate of the reclaimed water is further improved, and the use amount of clear water is saved; the system design process and the equipment are reliable, the water in the paper making is recycled, and the aims of clean production and environmental protection are achieved.
Description
Technical Field
The utility model relates to a reclaimed water recycling system for papermaking production, and belongs to the technical field of papermaking.
Background
The papermaking industry is an industry with large water consumption, the water consumption of each ton of product is about 20 tons, and active research, development and innovation of papermaking enterprises are needed for reducing production water, reducing water resource consumption and achieving the goals of water saving and emission reduction.
Disclosure of Invention
In order to solve the technical problems, the company carries out project research and development, inspects all water consumption points in the pulping and papermaking production process, analyzes the water quality requirements of all the water consumption points, grades the water consumption points, works out the water quality standard of reclaimed water, matches the water quality of the reclaimed water and the water quality of the reclaimed water in comprehensive production, determines the water consumption point positions of reclaimed water substitution, researches the storage, the conveying, the management control and the like of a reclaimed water recycling system to form a design scheme, and provides the reclaimed water recycling system for papermaking production.
In order to achieve the purpose, the technical scheme provided by the utility model is as follows: the utility model provides a papermaking production's reuse of reclaimed water system, includes waste water treatment portion, reclaimed water storage portion, reuse of reclaimed water portion, the waste water pipe after biochemical treatment is connected to waste water treatment portion water inlet, and the reuse of reclaimed water portion is connected to the delivery port, reuse of reclaimed water portion connects reuse of reclaimed water portion, reuse of reclaimed water portion includes papermaking production line net portion retrieval and utilization pipe point and press portion retrieval and utilization pipe point.
Furthermore, the wastewater treatment part comprises a coagulation tank, a filling tank, a curing tank and an inclined plate sedimentation tank which are connected in sequence, wherein a wastewater pipe and a flocculating agent feeding port are connected to a water inlet at the bottom of the coagulation tank, a connecting wall between the coagulation tank and the filling tank is lower than other tank walls to form a water outlet from the coagulation tank to the filling tank, a gap is reserved between the bottom of the tank wall between the filling tank and the curing tank and the bottom surface of the tank to form a water outlet from the filling tank to the curing tank, the connecting wall between the curing tank and the inclined plate sedimentation tank is lower than other tank walls to form a water outlet from the curing tank to the inclined plate sedimentation tank, a water outlet pipe is arranged at the upper part of the inclined plate sedimentation tank, and the water outlet pipe is connected with a reclaimed water storage part.
Furthermore, the mesh part recycling pipe points of the papermaking production line are forming mesh medium-pressure cleaning pipe points, the pressing part recycling pipe points are coarse cotton cloth medium-pressure cleaning pipe points and vacuum roller cleaning pipe points, and each pipe point comprises a water supply recycling pipe, a control valve and a spray head. The reuse point of the reclaimed water is to replace the part originally using fresh water with the reclaimed water.
Furthermore, stirring blades are arranged in the coagulation tank, the filling tank and the curing tank, and are connected with a stirring motor through a stirring shaft.
Furthermore, the coagulation tank, the filling tank and the curing tank are square tank bodies, and a trapezoidal tank body is arranged at the lower part of the inclined plate sedimentation tank.
Furthermore, the bottom of the inclined plate sedimentation tank is provided with a drain outlet, the drain outlet is connected with a hydraulic cyclone through a circulating pump and a pipeline, an overflow port of the hydraulic cyclone is connected with the filling tank, and a bottom flow port is connected with a sludge discharge pipe.
Furthermore, the reclaimed water storage part comprises a reclaimed water storage tank and a reclaimed water recycling pump, the upper part of the reclaimed water storage tank is connected with a water outlet pipe of the inclined plate sedimentation tank, the lower part of the reclaimed water storage tank is provided with a water outlet pipe, the water outlet pipe is connected with the reclaimed water recycling pump, and the output end of the reclaimed water recycling pump is connected with a water inlet pipeline of the reclaimed water recycling part.
The beneficial technical effects of the utility model are as follows: by using reclaimed water for reuse, the reclaimed water replaces part of fresh water, the aim of reducing the water consumption by 3 tons per ton of paper is achieved, the reuse rate of the reclaimed water is improved, and the use amount of clean water is saved; the system design process and the equipment are reliable, the water in the paper making is recycled, and the aims of clean production and environmental protection are achieved.
Drawings
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a wastewater treatment part, 11, a wastewater pipe, 12, a coagulation tank, 13, a filling tank, 14, a curing tank, 15, an inclined plate sedimentation tank, 16, a water outlet pipe, 17, a circulating pump, 18, a hydrocyclone, 2, a reclaimed water storage part, 21, a reclaimed water storage tank, 22, a reclaimed water recycling pump, 3, a reclaimed water recycling part, 31, a papermaking production line net part recycling pipe point, 32 and a squeezing part recycling pipe point.
Detailed Description
Example 1
The reclaimed water recycling system for papermaking production shown in figure 1 comprises a wastewater treatment part 1, a reclaimed water storage part 2 and a reclaimed water recycling part 3, wherein a water inlet of the wastewater treatment part 1 is connected with a wastewater pipe 11 after biochemical treatment, a water outlet is connected with the reclaimed water storage part 2, the reclaimed water storage part 2 is connected with the reclaimed water recycling part 3, and the reclaimed water recycling part 3 comprises a mesh part recycling pipe point 31 and a press part recycling pipe point 32 of a papermaking production line.
The wastewater treatment part 1 comprises a coagulation tank 12, a filling tank 13, a curing tank 14 and an inclined plate sedimentation tank 15 which are connected in sequence, wherein a wastewater pipe 11 and a flocculating agent adding port are connected to a water inlet at the bottom of the coagulation tank 12, the connecting wall between the coagulation tank 12 and the filling tank 13 is lower than other tank walls to form a water outlet from the coagulation tank 12 to the filling tank 13, a gap is reserved between the bottom of the tank wall between the filling tank 13 and the curing tank 14 and the bottom surface of the tank to form a water outlet from the filling tank 13 to the curing tank 14, the connecting wall between the curing tank 14 and the inclined plate sedimentation tank 15 is lower than other tank walls to form a water outlet from the curing tank 14 to the inclined plate sedimentation tank 15, a water outlet pipe 16 is arranged at the upper part of the inclined plate sedimentation tank 15, and the water outlet pipe 16 is connected with the reclaimed water storage part 2. The wastewater treatment part 1 is mainly used for carrying out advanced treatment on the papermaking wastewater after biochemical treatment.
The paper-making production line net part recycling pipe point 31 is a forming net medium-pressure cleaning pipe point, the pressing part recycling pipe point 32 is a coarse cotton cloth medium-pressure cleaning pipe point and a vacuum roller cleaning pipe point, each pipe point comprises a water supply recycling pipe, a control valve and a spray head, and the part which originally adopts fresh water is replaced by reclaimed water by the reclaimed water recycling point.
As can be seen from the above wastewater treatment department, the reclaimed water recycling treatment of the utility model needs to reach the standard in order to replace the original fresh water part. Therefore, in order to enable the reclaimed water treated by the wastewater treatment part 1 to reach the standard of the paper making production water, the reclaimed water treatment process is formed mainly by focusing on the requirement of the water quality index of the paper making production water, and a set of complete reclaimed water reuse system is further established.
As can be seen from the water quality requirements of the water for papermaking, the water for papermaking has higher requirements on COD, BOD and SS. At present, the COD of the papermaking wastewater treated by a sewage system engineering is about 150mg/L, BOD about 30mg/L, SS about 20mg/L, and advanced treatment is required to meet the water quality standard of the papermaking wastewater, so that the prior wastewater treatment process adopts a biological method treatment process, and a physical and chemical method combined treatment process is required to be considered for further advanced treatment. After comprehensive research and test, the structure and the process of the recycling system are formed, the expected treatment effect can be completely achieved, and the treated reclaimed water can replace fresh water to enter a papermaking production system for recycling. The recycling system has reliable process and equipment, realizes recycling of water in papermaking, saves water resources, accords with the national industrial policy of sustainable development, and has wide application prospect.
The water pressure requirement table of the paper making production water quality:
example 2
As a specific structural design of embodiment 1, the coagulation tank 12, the filling tank 13, and the maturation tank 14 are square tanks, and a trapezoidal tank is provided below the inclined plate sedimentation tank 15. All be provided with the stirring leaf in coagulating basin 12, filling pond 13, the curing pond 14, the stirring leaf passes through the (mixing) shaft and connects agitator motor, makes coagulation, filling and curing more abundant through the stirring.
The bottom of the inclined plate sedimentation tank 15 is provided with a sewage discharge outlet, the sewage discharge outlet is connected with a hydraulic cyclone 18 through a circulating pump 17 and a pipeline, an overflow port of the hydraulic cyclone 18 is connected with the filling tank 13, and a bottom flow port is connected with a sludge discharge pipe.
The reclaimed water storage part 2 comprises a reclaimed water storage tank 21 and a reclaimed water reuse pump 22, the upper part of the reclaimed water storage tank 21 is connected with a water outlet pipe of the inclined plate sedimentation tank 15, the lower part of the reclaimed water storage tank 21 is provided with a water outlet pipe, the water outlet pipe is connected with the reclaimed water reuse pump 22, and the output end of the reclaimed water reuse pump 22 is connected with a water inlet pipeline of the reclaimed water reuse part.
According to the utility model, by recycling reclaimed water, part of fresh water is replaced by reclaimed water, the aim of reducing the water consumption by 3 tons per ton of paper is achieved, the reuse rate of the reclaimed water is further improved, and the use amount of clear water is saved; the system design process and the equipment are reliable, the water in the paper making is recycled, and the aims of clean production and environmental protection are achieved.
The technical solutions given in the embodiments are for illustrating the technical solutions of the present invention, and are not limitations of the present invention, and all modifications based on the technical solutions of the present invention belong to the protection scope of the present invention.
Claims (7)
1. A reclaimed water recycling system for papermaking production is characterized in that: including waste water treatment portion, well water storage portion, reuse of reclaimed water portion, the waste water pipe after the biochemical treatment is connected to waste water treatment portion water inlet, and the reuse of reclaimed water portion is connected to the delivery port, reuse of reclaimed water portion is connected to the reuse of reclaimed water portion, reuse of reclaimed water portion includes paper-making production line net portion reuse pipe point and press a portion reuse of pipe point.
2. The reclaimed water recycling system for papermaking according to claim 1, wherein: the waste water treatment part comprises a coagulation tank, a filling tank, a curing tank and an inclined plate sedimentation tank which are sequentially connected, wherein a waste water pipe and a flocculating agent feeding port are connected with a water inlet at the bottom of the coagulation tank, a connecting wall between the coagulation tank and the filling tank is lower than other tank walls to form a water outlet from the coagulation tank to the filling tank, a gap is reserved between the bottom of the tank wall between the filling tank and the curing tank and the bottom surface of the tank to form a water outlet from the filling tank to the curing tank, the connecting wall between the curing tank and the inclined plate sedimentation tank is lower than other tank walls to form a water outlet from the curing tank to the inclined plate sedimentation tank, a water outlet pipe is arranged at the upper part of the inclined plate sedimentation tank, and the water outlet pipe is connected with a reclaimed water storage part.
3. The reclaimed water recycling system for papermaking according to claim 1, wherein: the paper-making production line net part recycling pipe points are forming net medium-pressure cleaning pipe points, the squeezing part recycling pipe points are coarse cotton cloth medium-pressure cleaning pipe points and vacuum roller cleaning pipe points, and each pipe point comprises a water supply recycling pipe, a control valve and a spray head.
4. The reclaimed water recycling system for papermaking according to claim 2, characterized in that: the mixing tank, the filling tank and the curing tank are internally provided with mixing blades which are connected with a mixing motor through a mixing shaft.
5. The reclaimed water recycling system for papermaking according to claim 2, characterized in that: the coagulation tank, the filling tank and the curing tank are square tank bodies, and a trapezoidal tank body is arranged at the lower part of the inclined plate sedimentation tank.
6. The reclaimed water recycling system for papermaking according to claim 5, wherein: the bottom of the inclined plate sedimentation tank is provided with a drain outlet, the drain outlet is connected with a hydraulic cyclone through a circulating pump and a pipeline, an overflow port of the hydraulic cyclone is connected with a filling tank, and a bottom flow port is connected with a sludge discharge pipe.
7. The reclaimed water recycling system for papermaking according to claim 1, wherein: the reclaimed water storage part comprises a reclaimed water storage tank and a reclaimed water recycling pump, the upper part of the reclaimed water storage tank is connected with a water outlet pipe of the inclined plate sedimentation tank, the lower part of the reclaimed water storage tank is provided with a water outlet pipe, the water outlet pipe is connected with the reclaimed water recycling pump, and the output end of the reclaimed water recycling pump is connected with a water inlet pipeline of the reclaimed water recycling part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122942269.XU CN216236209U (en) | 2021-11-29 | 2021-11-29 | Reclaimed water recycling system for papermaking production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122942269.XU CN216236209U (en) | 2021-11-29 | 2021-11-29 | Reclaimed water recycling system for papermaking production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216236209U true CN216236209U (en) | 2022-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122942269.XU Active CN216236209U (en) | 2021-11-29 | 2021-11-29 | Reclaimed water recycling system for papermaking production |
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| Country | Link |
|---|---|
| CN (1) | CN216236209U (en) |
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2021
- 2021-11-29 CN CN202122942269.XU patent/CN216236209U/en active Active
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Address after: 235200 south of 021 County Road, Beicheng village, Shengquan Township, Xiao County, Suzhou City, Anhui Province Patentee after: Anhui Linping Circular Development Co.,Ltd. Address before: 235200 south of 021 County Road, Beicheng village, Shengquan Township, Xiao County, Suzhou City, Anhui Province Patentee before: ANHUI XIAOXIAN LINPING PAPER CO.,LTD. |