CN1135366A - Device for recovering and utilizing white liqor of paper-making - Google Patents
Device for recovering and utilizing white liqor of paper-making Download PDFInfo
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- CN1135366A CN1135366A CN 95111361 CN95111361A CN1135366A CN 1135366 A CN1135366 A CN 1135366A CN 95111361 CN95111361 CN 95111361 CN 95111361 A CN95111361 A CN 95111361A CN 1135366 A CN1135366 A CN 1135366A
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Abstract
The device for recovering and utilizing white-liquid of paper-making comprises a pit which is devided into detritus part, reaction flocculation part, settling concentration part and water-collecting part. In the settling concentration part are set side-by-side a group of transverse-flow tilted-plate unit to increasie the settling speed of fine fiber. Said device can continuously recover pulp and clear water which can be cyclically used for paper-making. It has the advantage of simple structure, low cost, less ground occupation, less investment and high recovering rate etc..
Description
The present invention relates to the treating apparatus of industrial wastewater, specifically a kind of device of recycling mthod of white water from paper making.
Mthod of white water from paper making is the industrial wastewater of being discharged by the paper machine wet end in the paper production process, and its feature is that discharge capacity is big, and with regard to present China paper industry, one ton of paper of every production will be discharged 300～500 tons of mthod of white water from paper making; Secondly, contain more fiber fines and filler in the mthod of white water from paper making, its concentration is generally about 3 grams per liters, the mthod of white water from paper making concentration that the factory that has discharges is up to more than 5 grams per liters, just present, the most medium and small paper plant of China does not generally all recycle mthod of white water from paper making, it is directly entered among the rivers as industrial wastewater, cause the waste of water resource and a large amount of losses of material wealths such as fiber fines, filler, this certainly will increase the paper production cost, and the mthod of white water from paper making that even more serious is is discharged is with serious environment pollution.Therefore, the recycling mthod of white water from paper making is not only an economy and is asked it is that mthod of white water from paper making pollutes, the social concern of protection environment but administer.(light industry publishing house publishes according to " papermaking and equipment ", in May, 1982 version) document record: the paper mill is used for the equipment of white water recycle, modal is the conical settler (being the plain boiled water tower again) that adopts sedimentation, it is to mix the conical vessel that earth is made by steel plate or reinforcing bar, mthod of white water from paper making is sent into conical vessel by mesotube, fiber fines, solid contents such as filler are settled down to the awl bottom along the cone inwall, primary water moves upward and enters clean water chamber and discharge through outlet pipe, the equipment that is characterized in is simple, easy to maintenance, but, because fiber sedimentation time length need be built the very big plain boiled water tower of volume, it is big to build plain boiled water tower floor space, investment cost is very high, and the rate of recovery of fiber and filler is low, the clear water quality instability of recovery, and secondary use value is lower; Also has a kind of flotation saveall that adopts floatation, it is to add flocculant to make fibre deposition in the white water recycle pond, charge into air then, attached to the steam bubble on the fiber fiber is floated to liquid level, collect fiber with the mechanical scraper plate that moves again, adopt the advantage of this equipment to be: the fiber recovery height, the water quality of recycle-water is good, can be recycled, but the fiber that is reclaimed is because of containing the small steam bubble that the meeting that is difficult to eliminate has a strong impact on quality of finished paper, give to carry and once more reuse constitute a serious difficulty, the fiber that is reclaimed is generally abandoned as waste material and is put, this still can cause the waste of material wealth, and this device structure complexity, fault is more, the operating maintenance trouble, power consumption is big, operational and administrative expenses is very high, do not have economic benefit in actual motion, this also is that present paper industry is seldom implemented the one of the main reasons that mthod of white water from paper making is recycled.
The objective of the invention is on the basis of existing technology, the characteristic of utilizing the fleeces coagulation to fall, propose a kind of simple structure, operating cost low, can defoam and the device of the recycling mthod of white water from paper making of sand grains, recovery useful fiber and filler and clear water.
The objective of the invention is usually to realize by following technology side.
A kind of device of recycling mthod of white water from paper making, it is one the plain boiled water water inlet pipe is installed, the clear water outlet pipe, the pond body of sediment outflow pipe and slurry recovery tube, pond body inner route clapboard is separated into: the bottom is provided with the sand setting district that connects sand hopper, the bottom is provided with the reaction flocculation zone that connects the slurry bucket, precipitation enrichment region and gathering ground, the sediment outflow pipe is connected at the bottom of the bucket that connects sand hopper, the slurry recovery tube is connected at the bottom of the bucket that connects the slurry bucket, it is characterized in that: stretch into plain boiled water water inlet pipe end in the sand setting district be connected with in the dress blade etc. the attitude mixing tube, top at the precipitation enrichment region is equipped with one group of cross-current swash plate cell cube side by side, cross-current swash plate cell cube is to be made of two groups of swash plates that are installed on relatively in the framework, is equiped with integrated water dispensing board in the upside of precipitation enrichment region is separated out by dividing plate and the flow transition slab that increases the water flowing section from bottom to up gradually, the gathering ground of clear water outlet pipe.
The present invention also has following technical characterictic:
The inwall in sand setting district is equipped with removes the sand plate, and the angle of inclination of removing the sand plate is 45～60 degree, and desanding effect is preferably arranged.
The blade of device is the left and right alternate installation of revolving in the static mixing tube, can make by the mthod of white water from paper making that is added with flocculant that is pumped into when flowing through static mixing tube, change flow direction repeatedly, impel flocculant and mthod of white water from paper making to mix, it is poly-to help the fiber fines wadding, can improve the rate of recovery of fiber and the quality of recycle-water.
Cross-current swash plate cell cube is formed down " eight " font by two and is installed on the interior swash plate formation of framework, the angle of inclination of swash plate is 45～60 degree, the distance between plates of swash plate is 20～80mm, mthod of white water from paper making flows in the cross-current mode, wadded a quilt with cotton solid contents such as poly-fiber and filler between the swash plate of short spacing rapid subsidence in the swash plate that tilts, slip into converge the slurry corridor, enter the precipitation enrichment region again and concentrate the back sedimentation and go into to connect the slurry bucket, discharge by the slurry recovery tube and be back to paper production.
The flow transition slab is done the water flowing duct of forming down " Δ " shape by one, the clear water of discharging through cross-current swash plate cell cube enters the gathering ground reposefully by the water flowing duct of flow transition slab, because the water flowing section of flow transition slab is to increase gradually from bottom to up, can improve the quality of recycle-water.
Integrated water dispensing board is installed on base plate by an intake pipe of forming " worker " font that is interconnected with collection pipe in the stage casing and constitutes, one group of " worker " font intake pipe that is installed on base plate can disperse many places steadily to fetch water, stage casing at " worker " font intake pipe is interconnected with collection pipe, passing base plate by total collection pipe discharges, discharge the pond body and be conveyed into clear water reserviors and be back to paper production by being installed on clear water outlet pipe in the gathering ground again, owing to adopt one group of " worker " font intake pipe to disperse many places steadily to fetch water, can avoid producing whirlpool, impact cavitation, improve the water distribution quality.
The present invention is a pond body, be separated into sand setting district, reaction flocculation zone, precipitation enrichment region and gathering ground at pond body inner route clapboard, in the precipitation enrichment region, one group of cross-current swash plate cell cube is installed side by side, integrated water dispensing board is installed, continuously fiber fines, filler and the clear water paper production that is back to capable of circulation that reclaims in the gathering ground.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a vertical view of the present invention.
Fig. 3 is B-B cutaway view of Fig. 2.
Fig. 4 be the K of Fig. 1 to figure, the limbers road shape one of flow transition slab.
Fig. 5 is C-C cutaway view of Fig. 4.
Fig. 6 is the limbers road shape two of flow transition slab.
Fig. 7 is the limbers road shape three of flow transition slab.
Fig. 8 is the cutaway view of static mixing tube.
Fig. 9 is the structural representation of cross-current swash plate cell cube.
Figure 10 is the structure chart of the framework of cross-current swash plate cell cube.
Figure 11 is the side view of integrated water dispensing board.
Figure 12 is the structural representation of integrated water dispensing board.
The present invention is further illustrated below in conjunction with accompanying drawing:
A kind of device of recycling mthod of white water from paper making, it is one plain boiled water water inlet pipe 21 is installed, clear water outlet pipe 11, the pond body 13 of sediment outflow pipe 19 and slurry recovery tube 29, pond body 13 inner route clapboards 25,32,33,6 are separated into: the bottom is provided with the sand setting district 23 that connects sand hopper 20, the bottom is provided with and connects slurry bucket 37,38,18,17,15 reaction flocculation zone 27,31,28,40,3,4, precipitation enrichment region 14 and gathering ground 10, sediment outflow pipe 19 is connected at the bottom of the bucket that connects sand hopper 20, connect and be equiped with umbrella hat 30 in the sand hopper 20, in order to avoid the sand grains that sinks to stops up the bucket end, in being connected in, slurry recovery tube 29 is equiped with umbrella hat 16,36 the slurry that connects struggles against 37,38,18,17, at the bottom of 15 the bucket, done overfall 39 in the top side in sand setting district 23, the inwall in sand setting district 23 is equipped with removes sand plate 24, the angle of inclination of removing sand plate 24 is 50 degree, plain boiled water water inlet pipe 21 ends that stretch in the sand setting district 23 are connected with the interior static mixing tube 22 of adorning blade 42, the blade 42 of device is a left side in the static mixing tube 22, the alternate installation of dextrorotation, can make and change flow direction when flowing through static mixing tube 22 repeatedly by the mthod of white water from paper making that before pump, is added with flocculant that is pumped into, impel flocculant and mthod of white water from paper making to mix, top at precipitation enrichment region 14 is equipped with one group of cross-current swash plate cell cube 7 side by side, cross-current swash plate cell cube 7 is formed down " eight " font by two and is fixedly installed in framework 43, the slurry corridor plate 45 interior swash plates 44 that converge constitute, the angle of inclination of swash plate 44 is 50 degree, the distance between plates of swash plate 44 is 30～60mm, also can at framework 43 and converge with starching on the corridor plate 45 and make teeth groove 47,44 one-tenth of two groups of swash plates are fallen " eight " font insert teeth groove 47, can make the transportation simple installation, between framework 43 internal exchanges slurry corridor plate 45, constitute to converge and starch corridor 46, in being separated out by dividing plate 12 and the flow transition slab 8 that increases the water flowing section from bottom to up gradually, the upside of precipitation enrichment region 14 is equiped with integrated water dispensing board 9, the gathering ground 10 of clear water outlet pipe 11, flow transition slab 8 is done the water flowing duct 41 of forming down " Δ " shape by one, the water flowing section of flow transition slab 8 is to increase gradually from bottom to up, can improve the quality of recycle-water, mthod of white water from paper making flows into cross-current oblique cell body 7 in the cross-current mode, between the swash plate of short spacing, utilize the shallow layer settling principle, wadded a quilt with cotton solid contents such as poly-fiber and filler between the swash plate 44 of short spacing rapid subsidence in the swash plate 44 that tilts, slip into by converging and starch the remittance slurry corridor 46 that corridor plate 45 constitutes, enter precipitation enrichment region 14 concentration and settlements again and go into to connect slurry bucket 15,17, discharge reuse by slurry recovery tube 29.The clear water of discharging through cross-current swash plate cell cube 7 enters gathering ground 10 reposefully by the water flowing duct 41 of flow transition slab 8, integrated water dispensing board 9 is made of in base plate 48 intake pipe 50 welded and installed of forming " worker " font that are interconnected with collection pipe 51 in the stage casing, be installed on base plate 48 one group " worker " but font intake pipe 50 many places steadily fetch water, stage casing at " worker " font intake pipe 50 is communicated with mutually one by one with collection pipe 51, pass base plate 48 by total collection pipe 49 and discharge, discharge reuse by the clear water outlet pipe 11 that is installed in the gathering ground 10 again.
Device by recycling mthod of white water from paper making proposed by the invention is to work like this: with pump the mthod of white water from paper making by suitable paper machine discharge that is compiled in the white water chest is sent into plain boiled water water inlet pipe 21 and (add an amount of flocculant before pump, for example, commercial " one clear " high polymer coagulant), add and the mthod of white water from paper making of flocculant is arranged when flowing through static mixing tube 22, connect a left side in the static mixing tube 22, the blade 42 guiding mthod of white water from paper making of the alternate installation of dextrorotation change flow direction self repeatedly and stir arch, impel flocculant and mthod of white water from paper making fully to mix at short notice, help fiber fines in the mthod of white water from paper making, the flocculation of solid contents such as filler, can improve the rate of recovery of slurry and the quality of recycle-water, after mthod of white water from paper making flows out static mixing tube 22, steam bubble foam in the mthod of white water from paper making, suspensions such as light impurity are discharged through the overfall 39 of 23 top sides, sand setting district, mthod of white water from paper making moves downward along sand setting district 23, under the shielding action of removing sand plate 24 that sand setting district 23 inwalls are installed, sand grains sinks to and connects sand hopper 20 in the mthod of white water from paper making, by sediment outflow pipe 19 rows for the treatment of, mthod of white water from paper making is respectively through dividing plate 32, the passage 34 of 33 lower ends, 35 enter reaction flocculation zone 31,27 move upward, breach 2 through dividing plate 25 tops enters reaction flocculation zone 3,28 move downward, passage 26 through space bar 1 lower end enters reaction flocculation zone 4,40, breach 5 through dividing plate 6 tops enters precipitation enrichment region 14 again, the mthod of white water from paper making that is added with flocculant is at reaction flocculation zone 27,31,28,40,3, make progress repeatedly in 4, alternately flow downwards, under the effect of flocculant, fiber fines in the mthod of white water from paper making, filler reaction wadding is poly-, respectively with incorgruous stream, the numerous and confused sedimentation of the subsidence style of concurrent goes into to connect slurry bucket 37,38, in 18, discharge reuse by slurry recovery tube 29, the mthod of white water from paper making that flows into the poly-reaction of wadding a quilt with cotton of precipitation enrichment region 14 enters one group of cross-current swash plate cell cube, the 7 further sedimentations that are installed on precipitation enrichment region 14 tops side by side in the mode of cross-current again, mthod of white water from paper making flows in the cross-current mode, between the swash plate 44 of short spacing, utilize the shallow layer settling principle, wadded a quilt with cotton solid contents such as poly-fiber and filler between the swash plate 44 of short spacing rapid subsidence in the swash plate 44 that tilts, slip into by converging and starch the remittance slurry corridor 46 that corridor plate 45 constitutes, enter precipitation enrichment region 14 concentration and settlements again and go into to connect slurry bucket 15,17, discharge reuse by slurry recovery tube 29, the clear water of discharging through cross-current swash plate cell cube 7 enters gathering ground 10 reposefully by the water flowing duct 41 of the flow transition slab 8 that increases the water flowing section from bottom to up gradually, integrated water dispensing board 9 is made of in base plate 48 intake pipe 50 welded and installed of forming " worker " font that are interconnected with collection pipe 51 in the stage casing, one group of " worker " font intake pipe 50 that is installed on base plate 48 can disperse many places steadily to fetch water, stage casing at " worker " font intake pipe 50 is communicated with mutually one by one with collection pipe 51, pass base plate 48 by total collection pipe 49 and discharge, be back to paper production by the clear water outlet pipe 11 discharge pond bodies 13 input clear water reserviors that are installed in the gathering ground 10 again.
Simple structure of the present invention, reduced investment, easy to operate are specially adapted to the paper mill Recycle mthod of white water from paper making, can form returning of a sealing with the paper machine production procedure Receive the circulatory system, obvious economic benefit and social environment benefit are arranged.
Claims (6)
1 one kinds of devices of recycling mthod of white water from paper making, it is a pond body (13), pond body (13) inner route clapboard (25,32,33,6) be separated into: the bottom is provided with the sand setting district (23) that connects sand hopper (20), the bottom is provided with and connects slurry bucket (37,38,18,17,15) reaction flocculation zone (27,31,23,40,3,4) and the precipitation enrichment region (14), sediment outflow pipe (19) is connected at the bottom of the bucket that connects sand hopper (20), slurry recovery tube (29) is connected in and connects slurry bucket (37,38,18,17,15) at the bottom of the bucket, it is characterized in that: plain boiled water water inlet pipe (21) end that stretches in the sand setting district (23) is connected with the interior static mixing tube (22) of adorning blade (42), top at precipitation enrichment region (14) is equipped with one group of cross-current swash plate cell cube (7) side by side, is equiped with integrated water dispensing board (9) in the upside of precipitation enrichment region (14) is separated out by dividing plate (12) and the flow transition slab (8) that increases the water flowing section from bottom to up gradually, the gathering ground (10) of clear water outlet pipe (11).
The device of 2 recycling mthod of white water from paper making according to claim 1, the inwall that it is characterized in that sand setting district (23) is equipped with removes sand plate (24), and the angle of inclination of removing sand plate (24) is 45～60 degree.
The device of 3 recycling mthod of white water from paper making according to claim 1 is characterized in that the blade (42) of device in the static mixing tube (22) is the left and right alternate installation of revolving.
The device of 4 recycling mthod of white water from paper making according to claim 1, it is characterized in that cross-current swash plate cell cube (7) forms down the swash plate (44) that " eight " font is installed in the framework (42) by two and constitute, the angle of inclination of swash plate (44) is 45～60 degree, and the distance between plates of swash plate (44) is 20～80mm.
The device of 5 recycling mthod of white water from paper making according to claim 1 is characterized in that flow transition slab (8) does the water flowing duct (41) of forming down " Δ " shape by one.
The device of 6 recycling mthod of white water from paper making according to claim 1 is characterized in that integrated water dispensing board (9) is installed on base plate (48) by an intake pipe (50) of forming " worker " font that is interconnected with collection pipe (51) in the stage casing and constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111361 CN1135366A (en) | 1995-05-10 | 1995-05-10 | Device for recovering and utilizing white liqor of paper-making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95111361 CN1135366A (en) | 1995-05-10 | 1995-05-10 | Device for recovering and utilizing white liqor of paper-making |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1135366A true CN1135366A (en) | 1996-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95111361 Pending CN1135366A (en) | 1995-05-10 | 1995-05-10 | Device for recovering and utilizing white liqor of paper-making |
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| CN (1) | CN1135366A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285278B (en) * | 2008-04-16 | 2010-06-02 | 黄可柽 | Recovering process for white water of paper making by stewing type precipitation method |
| CN102120654A (en) * | 2011-01-19 | 2011-07-13 | 重庆大学 | Small-town sewage pretreatment integrated device and method |
| CN103395905A (en) * | 2013-07-29 | 2013-11-20 | 黄文龙 | Deep treatment process and deep treatment equipment of wastewater |
| CN104941264A (en) * | 2015-05-20 | 2015-09-30 | 国核电力规划设计研究院 | System and method for recycling backwashing water of biological aerated filter |
| CN113023856A (en) * | 2021-04-25 | 2021-06-25 | 北控水务(中国)投资有限公司 | Drainage pipeline overflow sewage treatment system and method |
-
1995
- 1995-05-10 CN CN 95111361 patent/CN1135366A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285278B (en) * | 2008-04-16 | 2010-06-02 | 黄可柽 | Recovering process for white water of paper making by stewing type precipitation method |
| CN102120654A (en) * | 2011-01-19 | 2011-07-13 | 重庆大学 | Small-town sewage pretreatment integrated device and method |
| CN103395905A (en) * | 2013-07-29 | 2013-11-20 | 黄文龙 | Deep treatment process and deep treatment equipment of wastewater |
| CN103395905B (en) * | 2013-07-29 | 2015-03-25 | 黄文龙 | Deep treatment process and deep treatment equipment of wastewater |
| CN104941264A (en) * | 2015-05-20 | 2015-09-30 | 国核电力规划设计研究院 | System and method for recycling backwashing water of biological aerated filter |
| CN113023856A (en) * | 2021-04-25 | 2021-06-25 | 北控水务(中国)投资有限公司 | Drainage pipeline overflow sewage treatment system and method |
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