CN212335646U - Papermaking waste water recycling system - Google Patents
Papermaking waste water recycling system Download PDFInfo
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- CN212335646U CN212335646U CN202021250646.2U CN202021250646U CN212335646U CN 212335646 U CN212335646 U CN 212335646U CN 202021250646 U CN202021250646 U CN 202021250646U CN 212335646 U CN212335646 U CN 212335646U
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- 238000004064 recycling Methods 0.000 title claims abstract description 24
- 239000002351 wastewater Substances 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 154
- 238000001914 filtration Methods 0.000 claims description 34
- 238000001514 detection method Methods 0.000 claims description 2
- 238000011084 recovery Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Abstract
The utility model relates to a recycling and recycling system for papermaking wastewater, belonging to the technical field of papermaking wastewater recycling, wherein a water outlet of a paper machine is communicated with a water inlet pipeline of a white water tank, and the white water tank is provided with three water outlets which are respectively a primary water outlet communicated with a water inlet of the paper machine; the multi-disc filter filters and recovers water from the second-level water outlet of the white water tank to obtain ultra-clear water, clear white water, turbid white water and recovered pulp, the ultra-clear water is reinjected to the paper machine, the clear water is injected into the clean water tank, the turbid white water flows back in the multi-disc filter, the recovered pulp enters the mixed pulp tank, and the water consumed by the paper machine is precipitated and recycled.
Description
Technical Field
The utility model belongs to the technical field of papermaking wastewater recovery, more specifically relates to a papermaking wastewater recovery recirculation system.
Background
The paper industry is an important post industry closely related to national economic development and social civilization construction, but the extensive development mode causes certain pollution to the environment. The discharge amount of the waste water of the paper industry is large, the untreated waste water contains a large amount of pollutants, the oxygen consumption is large, the color is deep, the taste is smelly, and certain toxicity is realized. The pollutants have certain influence on the quality of the received water body, even destroy the ecological environment, and have large discharge amount of papermaking wastewater, complex components and large treatment difficulty.
Therefore, the recycling of the recycled wastewater is particularly important, and not only can tap water be reduced, but also the fibers dissolved in the water can be extracted for recycling.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
An object of the utility model is to solve above-mentioned problem.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a recycling and recycling system for papermaking wastewater, which comprises a white water tank, a multi-disc filter, a mixed pulp tank and a paper machine, wherein the water outlet of the paper machine is communicated with a water inlet pipeline of the white water tank, and the white water tank is provided with three water outlets which are respectively a primary water outlet communicated with the water inlet of the paper machine; the multi-disc filter filters and recovers water from the second-stage water outlet of the white water tank to obtain ultra-clear white water, turbid white water and recovered pulp, the ultra-clear white water is reinjected to the paper machine, the clear white water is injected into the clean water tank, the turbid white water flows back in the multi-disc filter, and the recovered pulp enters the mixed pulp tank.
Preferably, the recovered slurry in the mixing slurry tank is stirred and mixed, and then is conveyed to a multi-disc filter for further filtration.
Preferably, the white water tank comprises a first-order tank and a second-order tank, the first-order tank and the second-order tank are of a stepped structure, the second-order tank is communicated with a paper machine pipeline, the first-order tank is communicated with a multi-disc filter pipeline, and a filtering mechanism is arranged between the first-order tank and the second-order tank.
Preferably, a water quality detector is arranged in the first-order tank, the water quality detector is externally connected with a controller, electromagnetic valves are arranged on a pipeline between the first-order tank and the multi-disc filter and a pipeline between the second-order tank and the paper machine, and the electromagnetic valves are electrically connected with the controller.
Preferably, the filtering mechanism comprises an arc-shaped filtering base and a filtering net wheel, the filtering net wheel comprises a plurality of filtering blades, and the maximum interval length among the plurality of filtering blades is smaller than the arc length of the arc-shaped filtering base.
A recycling method of a recycling system of papermaking wastewater comprises the following steps:
s100, injecting water, namely connecting a clear water pipeline with a paper machine to perform primary water injection operation, and enabling the paper machine to start to produce paper and discharge sewage;
s200, precipitating, namely injecting sewage discharged by the paper machine into a white water tank for precipitation to perform a first recovery operation to obtain recovered white water;
s300, filtering, namely injecting the recovered white water into a multi-disc filter for filtering operation to obtain super-clear white water, turbid white water and recovered pulp;
and S400, circulating, and reinjecting the ultra-clear water to a paper machine for recycling.
Preferably, in the step S200 of precipitating, the recovered white water needs to be subjected to water quality detection, and if the clarity of the recovered white water after precipitating can reach 10-30 mg/L, the recovered white water is injected back into the paper machine for recycling; if the clarity of the recovered white water after precipitation can reach 30-100 mg/L, injecting the recovered white water into a multi-disc filter for filtering; and if the clarity of the recovered white water after precipitation is higher than 100mg/L, injecting the recovered white water into the cleaning water tank.
Preferably, in the filtering process of step S300, the recovered pulp enters the mixed pulp tank to be mixed with the recovered white water from the white water tank, and then the mixture is filtered and recovered by the multi-disc filter.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a recycling and recycling system for papermaking wastewater, which comprises a white water tank, a multi-disc filter, a mixed pulp tank and a paper machine, wherein the water outlet of the paper machine is communicated with a water inlet pipeline of the white water tank, and the white water tank is provided with three water outlets which are respectively a primary water outlet communicated with the water inlet of the paper machine; the multi-disc filter filters and recovers water from the second-level water outlet of the white water tank to obtain ultra-clear water, clear white water, turbid white water and recovered pulp, the ultra-clear water is reinjected to the paper machine, the clear water is injected into the clean water tank, the turbid white water flows back in the multi-disc filter, the recovered pulp enters the mixed pulp tank, and the water consumed by the paper machine is precipitated and recycled.
(2) The utility model discloses a papermaking waste water recovery recirculation system, the plain boiled water pond includes first-order pond and second order pond, first-order pond and second order pond are the stair structure, second order pond and paper machine pipeline intercommunication, first-order pond and many disc filter pipeline intercommunication, be equipped with filtering mechanism between first-order pond and the second order pond, the structure of this design, divide into first-order pond and second order pond with the plain boiled water pond, make through setting up different degree of depth when drawing water to the plain boiled water pond again, the precipitate that can not drive the bottom of the pool turns over to gush, cause extra pollution, the filtering mechanism who sets up simultaneously can guarantee only water exchange and not impurity exchange between first-order pond and the second order pond.
Drawings
FIG. 1 is a schematic structural view of a recycling system for papermaking wastewater according to the present invention;
FIG. 2 is a schematic view of another structure of a recycling system for paper-making wastewater according to the present invention;
fig. 3 is a side view of a white water tank of a recycling system for paper-making waste water according to the present invention.
The reference numerals in the schematic drawings illustrate:
100. a white water tank; 110. a primary water outlet; 120. a secondary water outlet; 130. a third-stage water outlet; 140. a first-order pool; 150. a second-order pool; 160. a filtering mechanism; 161. a filter base; 162. a filter screen wheel; 163. a filter blade; 170. a water quality detector; 180. a controller; 190. an electromagnetic valve;
200. a multi-disc filter;
300. a mixed slurry tank;
400. a paper machine;
500. and cleaning the water tank.
Detailed Description
In order to facilitate understanding of the invention, the invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and are not limited to the embodiments described herein, but which are provided so as to render the disclosure of the invention more thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to fig. 1-3, the recycling system for paper-making wastewater of the present embodiment includes a white water tank 100, a multi-disc filter 200, a mixed pulp tank 300 and a paper machine 400, wherein a water outlet of the paper machine 400 is communicated with a water inlet pipe of the white water tank 100, the white water tank 100 is provided with three water outlets, which are first-stage water outlets 110 respectively communicated with a water inlet of the paper machine 400; the multi-disc filter 200 filters and recovers water from the secondary water outlet 120 of the white water tank 100 to obtain ultra-clear water, clear white water, turbid white water and recovered pulp, the ultra-clear water is reinjected to the paper machine 400, the clear water is injected into the clean water tank 500, the turbid white water flows back in the multi-disc filter 200, and the recovered pulp enters the mixed pulp tank 300.
Preferably, the recovered pulp in the mixed pulp tank 300 is stirred and mixed, and then is conveyed to the multi-disc filter 200 for continuous filtration, and further water in the recovered pulp is recycled, so that more water can be recycled, and more fibers can be extracted for continuous utilization.
Preferably, the white water tank 100 includes a first-order tank 140 and a second-order tank 150, the first-order tank 140 and the second-order tank 150 are in a stepped structure, the second-order tank 150 is in pipe communication with the paper machine 400, the first-order tank 140 is in pipe communication with the multiple disc filter 200, and a filtering mechanism 160 is disposed between the first-order tank 140 and the second-order tank 150, in this designed structure, the white water tank 100 is divided into the first-order tank 140 and the second-order tank 150, and by setting different depths, when the white water tank 100 is pumped, the sediment at the bottom of the tank is not driven to surge, causing additional pollution, and the filtering mechanism 160 can ensure that only water exchange but not impurity exchange exists between the first-order tank 140 and the second.
Preferably, the water quality detector 170 is arranged in the first-order tank 140, the water quality detector 170 is externally connected with the controller 180, the pipeline between the first-order tank 140 and the multi-disc filter 200 and the pipeline between the second-order tank 150 and the paper machine 400 are both provided with the electromagnetic valve 190, and the electromagnetic valve 190 is electrically connected with the controller 180.
Preferably, the filtering mechanism 160 includes an arc-shaped filtering base 161 and a filtering net wheel 162, the filtering net wheel 162 includes a plurality of filtering blades 163, the maximum interval length between the plurality of filtering blades 163 is smaller than the arc length of the arc-shaped filtering base 161, the structure of the design, the filtering net wheel 162 is rotatably connected with the filtering base 161 through a one-way bearing, the filtering net wheel 162 divides the region of the first-order tank 140 and the second-order tank 150, so that only water is exchanged between the first-order tank 140 and the second-order tank 150, when sediment is also remained in the first-order tank 140, the filtering net wheel can be rotated and manually pushed by a tool to enter the second-order tank 150 from the first-order tank 140, and during the transferring process, the filtering net wheel 162 rotates to avoid the backflow of the impurities.
During operation, the water that comes from paper machine 400 is preliminary depositd in white water pond 100 to judge through measuring quality of water whether direct reinjection paper machine 400 of water after the sediment, when quality of water is not good enough, the water injection in white water pond 100 carries out filtering operation for many disc filters 200, obtains the compound water that pours into paper machine 400, and this system can retrieve a large amount of water of circulation, makes the clear water volume of the direct consumption of paper machine 400 reduce, has practiced thrift water.
The above-mentioned embodiments only express a certain implementation manner of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. A papermaking waste water recycling system is characterized in that: the multi-disc pulp mixing machine comprises a white water tank (100), a multi-disc filter (200), a mixed pulp tank (300) and a paper machine (400), wherein a water outlet of the paper machine (400) is communicated with a water inlet pipeline of the white water tank (100), and the white water tank (100) is provided with three water outlets which are respectively a primary water outlet (110) communicated with a water inlet of the paper machine (400); the multi-disc filter comprises a secondary water outlet (120) communicated with a water inlet of the multi-disc filter (200) and a tertiary water outlet (130) communicated with a clean water tank (500), the multi-disc filter (200) filters and recovers water from the secondary water outlet (120) of the white water tank (100) to obtain ultra-clean white water, turbid white water and recovered pulp, the ultra-clean white water is injected back to the paper machine (400), the clean white water is injected into the clean water tank (500), the turbid white water flows back in the multi-disc filter (200), and the recovered pulp enters the mixed pulp tank (300).
2. The recycling system of paper-making waste water according to claim 1, characterized in that: and after being stirred and mixed, the recovered pulp in the mixed pulp tank (300) is conveyed to a multi-disc filter (200) for continuous filtration.
3. The recycling system of paper-making waste water according to claim 1, characterized in that: the white water tank (100) comprises a first-order tank (140) and a second-order tank (150), the first-order tank (140) and the second-order tank (150) are of a stepped structure, the second-order tank (150) is communicated with a paper machine (400) through a pipeline, the first-order tank (140) is communicated with a multi-disc filter (200) through a pipeline, and a filtering mechanism (160) is arranged between the first-order tank (140) and the second-order tank (150).
4. The recycling system of paper-making waste water according to claim 3, characterized in that: the water quality detection device is characterized in that a water quality detector (170) is arranged in the first-order pool (140), the water quality detector (170) is externally connected with a controller (180), electromagnetic valves (190) are arranged on a pipeline between the first-order pool (140) and the multi-disc filter (200) and a pipeline between the second-order pool (150) and the paper machine (400), and the electromagnetic valves (190) are electrically connected with the controller (180).
5. The recycling system of paper-making waste water according to claim 3, characterized in that: the filter mechanism (160) comprises an arc-shaped filter base (161) and a filter screen wheel (162), wherein the filter screen wheel (162) comprises a plurality of filter blades (163), and the maximum interval length between the plurality of filter blades (163) is smaller than the arc length of the arc-shaped filter base (161).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021250646.2U CN212335646U (en) | 2020-06-30 | 2020-06-30 | Papermaking waste water recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021250646.2U CN212335646U (en) | 2020-06-30 | 2020-06-30 | Papermaking waste water recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212335646U true CN212335646U (en) | 2021-01-12 |
Family
ID=74078350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021250646.2U Active CN212335646U (en) | 2020-06-30 | 2020-06-30 | Papermaking waste water recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212335646U (en) |
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2020
- 2020-06-30 CN CN202021250646.2U patent/CN212335646U/en active Active
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