CN105198116B - The method for producing waste water is reduced in a kind of clean paper making - Google Patents
The method for producing waste water is reduced in a kind of clean paper making Download PDFInfo
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- CN105198116B CN105198116B CN201510544241.7A CN201510544241A CN105198116B CN 105198116 B CN105198116 B CN 105198116B CN 201510544241 A CN201510544241 A CN 201510544241A CN 105198116 B CN105198116 B CN 105198116B
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- 238000000034 method Methods 0.000 claims abstract description 72
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Abstract
The invention discloses a kind of method that generation waste water is reduced in clean paper making, the dilute plain boiled water produced in technique, part enters stock dilution process together with enriched water and reused, part enters white water filter machine and carries out filtration treatment, and then input paper pulp is used remaining dilute plain boiled water after softening agent is added；After dilute plain boiled water is handled through white water filter machine, the super clear water of generation enters ultrafiltration process；The concentrate that ultrafiltration process is produced, is used, the clear water of generation is directly entered counter-infiltration process for top sizing process starch gelatinization；The ultra-pure water that counter-infiltration process is produced is used into press section process, is handled while generating small-scale inorganic salt concentrate as waste water.The method for producing waste water is reduced in the clean paper making of the present invention, by realizing water demineralization and purification in paper making process, Ca is eliminated2+、Mg2+, DCS system accumulation, realize that the micro processing of clean paper making and paper waste is discharged.
Description
Technical field
The invention belongs to pulp technology for making paper, and in particular to the side for producing waste water is reduced into a kind of clean paper making
Method.
Background technology
At present, domestic and international clean paper making technology is substantially all using " DCS (Dissolved and above
Colloidal Substances, abbreviation DCS, dissolving and colloidal substance) control+microparticle retention and drainage system+multi-disc type plain boiled water
Filter " technology is combined, and the circulating and recovering degree of plain boiled water is improved with maximum possible.But these methods do not reach expection
Target, the colloidality material accumulation for being on the one hand gathered into bulky grain is still very serious, in addition, white water filter machine can not remove dissolubility
Inorganic salt electrolyte accumulation.Therefore, current paper manufacturing systems are still necessary to continuous discharge unit plain boiled water, supplement fresh water, with
The electrochemical equilibrium of wet end system is maintained, the relative clean of paper manufacturing systems is kept, it is ensured that the stable operation of paper machine.
Hepp. in 2005 etc. can be separated in paper machine white water 99% suspension by Ultra filtration membrane technology, be passed through
Clear water after ultrafiltration can be used for washing net, scouring of wool cloth.Sierka et al. using through different brackets molecular mass UF, MF, NF and
RO is tested three kinds of plain boiled waters, TOC, COD and conductivity variations index after analyzing and processing, and hyperfiltration treatment is adapted to remove plain boiled water
In suspended particulate substance or insoluble organic matter；NF membrane (DESAL-5) is to TOC clearances in 78.0~93.6%, COD clearances
87~95.2%, electrical conductivity declines 63.6~74.0%；Low pressure reverse osmosis film process (BW-30) plain boiled water, TOC clearances 78.0~
96.7%th, COD clearances 88~94.2, electrical conductivity decline 95.1~97.3%.But these trials are not all popularized, it is former
Because being DCS, Ca in mthod of white water from paper making2+Ion concentration is high, there are problems that for film serious fouling, easily pollution,
Film service life is short, and ton cost of water treatment is high, and enterprise is difficult to bear.
Colloidal type material in DCS comes from resin acid and aliphatic acid in fibrous raw material, and function additive AKD hydrolysis
Product etc., belongs to hydrophobic organic compound.Water-soluble class material in DCS comes from hemicellulose, oxalic acid and fruit in fibrous raw material
Dispersant in gelatin substance, and filler, dyestuff and AKD sizing agents, starch etc., such as recycling is in paper surface-sizing
Agent or as primary coat pigment decentralized medium, has no effect on product quality, and have certain help to applying glue, enhancing.However, due to
It is known that DCS harm, still uses flocculation sediment, aerating oxidation, biological decomposition (activated sludge or biology both at home and abroad at present
Rotating disk), anaerobic digestion, Fenton oxidation, the combined treatment link such as stabilization, the DCS (COD main components) in processing waste water, with
Make discharge water COD up to standard.Actually understand certainly so-called " pollutant " with substantial amounts of human and material resources, financial resources place to go, both wasted
Resource, a kind of very passive way sunk money again.
The content of the invention
Goal of the invention：For the deficiencies in the prior art, it is an object of the invention to provide a kind of clean paper making
It is middle to reduce the method for producing waste water, clean manufacturing requirement had both been met, can have been economized on resources again, moreover it is possible to preserve the ecological environment.
Technical scheme：For achieving the above object, the technical solution adopted by the present invention is as follows：
The method for producing waste water is reduced in a kind of clean paper making：The paper pulp prepared sequentially pass through stock dilution, into
After shape wet end, press section and top sizing process, paper is prepared into；Dilute plain boiled water and enriched water are produced in shaping wet end process,
Dilute plain boiled water is produced in press section process, dilute plain boiled water that two processes are produced directly is mixed after concentration, input enriched water in part is and dense
Plain boiled water enters stock dilution process and reused together, partly enters white water filter machine and carries out filtration treatment, remaining dilute plain boiled water
Then input paper pulp is used after softening agent is added；After dilute plain boiled water is handled through white water filter machine, the turbid plain boiled water of generation is directly entered paper
Slurry is used, and the recovery slurry of generation enters the processing of stock dilution process together with the fresh stock prepared, and the pure water of generation is used
Rinse and use in shaping wet end, the super clear water of generation enters ultrafiltration process；The concentrate that ultrafiltration process is produced, into top sizing
Process is used as starch gelatinization with water, and the clear water of generation is directly entered counter-infiltration process；The ultra-pure water that counter-infiltration process is produced
Use, handled while generating small-scale inorganic salt concentrate as waste water into press section process, obtain inorganic salts and make and whole
Water, whole water meets discharge standard directly discharge.
The method for producing waste water is reduced in described clean paper making, is opened up on the plain boiled water pipeline of paper feeding pulpboard size degradation
Softening agent access point, and storage tank is set in wet end chemistry auxiliary agent weighing area, pass through the softening on measuring pump and plain boiled water pipeline
Agent access point is attached with pipeline, and softening agent flux control is controlled by control system for paper machine.
The method for producing waste water is reduced in described clean paper making, for ultrafiltration and the ultrafiltration of counter-infiltration process and instead
Permeability apparatus, is located near multi-disc type white water filter machine, will go out the super clear water of multi-disc type filter and accesses ultrafiltration apparatus with pipeline,
And ultrafiltration concentration liquid storage tank, ultrafiltrate storage tank are built under ultrafiltration apparatus；Ultrafiltrate groove is connected to instead by pump pipeline
Permeability apparatus, and build under reverse osmosis unit ultrapure water storage tank, inorganic salts concentrate storage tank.
The method for producing waste water is reduced in described clean paper making, softening agent is polyvalent metal cation refuse removal
Agent.
The method for producing waste water is reduced in described clean paper making, adds and softens in plain boiled water pipeline softening agent access point
The mass percentage concentration of agent solution is 0.1~1.0%.The quality consumption of softening agent is the 0.05~0.1% of paper per ton.
Beneficial effect：The method for producing waste water is reduced in the clean paper making of the present invention, by paper making process
In realize water demineralization with purification, eliminate Ca2+、Mg2+, DCS and inorganic salt electrolyte system accumulation, realize papermaking cleaning life
Production is discharged with the micro processing of paper waste, has following advantage compared with traditional paper making process and wastewater treatment：
1) agent of papermaking water softener can be shifted effectively and the Ca in control paper manufacturing systems2+、Mg2+Deng polyvalent metal from
Son, reduces the hardness of water.
2) Anionic Trash Catcher transfer effective to DCS and control are enhanced, wet end system electrolyte balance is maintained, carries
High retention aid and filtering aid efficiency, makes plain boiled water water quality obtain softening and purification.
3) eliminate or greatly pollution remission thing is to technical barriers such as the foulings, pollution and concentration polarization of film.
4) sewage load and processing load is greatly reduced, existing sewage treatment plant's floor space can significantly subtract
Few, water resources taxes, charges for disposing pollutants, sewage disposal expense, water conveying power cost will also be saved, with integrated operation cost effect
Benefit.
5) due to realizing water and chaff interference recycling in production process, initial estimate often produces 1 ton of paper and only produced
Life is less than 1m3NaCl and Na2SO4Mixture concentrate, the H produced without sewage disposal2S foul smell and sludge secondary pollution are asked
Topic.
6) " clean paper making and waste water near-zero release technology " can save processing links of depolluting, original so-called " dirty
Dye thing " can carry out recycling, truly realize clean paper making.
Brief description of the drawings
Fig. 1 is existing clean paper making process chart；
Fig. 2 be the application clean paper making in reduce produce waste water method process chart.
Embodiment
With reference to specific embodiment, the present invention is further illustrated., can be more preferably geographical according to following embodiments
The solution present invention.However, as it will be easily appreciated by one skilled in the art that specific material proportion, process conditions described by embodiment
And its result is merely to illustrate the present invention, without should be also without limitation on protection scope of the present invention.It is not detailed in following examples
Most operation is the routine operation of this area.
Embodiment 1
As shown in figure 1, existing clean paper making technique, general procedure is as follows：
The paper pulp prepared is sequentially passed through after stock dilution, shaping wet end, press section and top sizing process, is prepared into paper
.Substantial amounts of dilute plain boiled water and enriched water can be produced in shaping wet end process, can also be produced in press section process substantial amounts of dilute white
Water, dilute plain boiled water that two processes are produced directly is mixed after concentration, part input enriched water, and stock dilution is entered together with enriched water
Process is reused, and is partly entered white water filter machine and is carried out filtration treatment, remaining dilute plain boiled water then first carries out sewage disposal, up to standard
Discharged afterwards.After dilute plain boiled water is handled through white water filter machine, the turbid plain boiled water of generation is directly entered paper pulp and used, the recovery slurry of generation
Enter the processing of stock dilution process together with the fresh stock prepared, the super clear water of generation is used for forming net and press felt is clear
Clean to use, the pure water of generation enters shaping wet end process and used.Meanwhile, in continuous flow procedure, in addition it is also necessary in press section
A certain amount of fresh water of continuous supplementation in process.
By taking a production line in 500,000 tons of paper/years as an example, ton paper can produce about 30~40 tons in shaping wet end process
Dilute plain boiled water and 140~160 tons of enriched water, 10~15 tons of dilute plain boiled water can be also produced in press section process, and 30~40 tons dilute white
Water inputs enriched water, and stock dilution process is entered together with enriched water and is reused, 10 tons of dilute plain boiled waters enter into white water filter machine
Row filtration treatment, 8~10 tons of dilute plain boiled waters then first carry out sewage disposal, up to standard to be discharged afterwards.Dilute plain boiled water through white water filter machine at
After reason, 3 tons of turbid plain boiled waters of generation are directly entered paper pulp and used, and 20~25 kilograms of generation reclaim slurry and the fresh stock one prepared
Rise and enter the processing of stock dilution process, produce 3 tons of super clear water and used into shaping wet end process, produce 4 tons of pure water and also enter
Shaping wet end process is used.Meanwhile, in continuous flow procedure, in addition it is also necessary to 4~6 tons are constantly added in press section process newly
Fresh water, and chemical assistant 4~8 tons of fresh water of dilution.Total 8~10 tons of waste water that produces is, it is necessary to increase fresh water 10~12
Ton.
Embodiment 2
In the clean paper making of the application reduce produce waste water method, technological process as shown in Fig. 2 detailed process such as
Under：
The paper pulp prepared is sequentially passed through after stock dilution, shaping wet end, press section and top sizing process, is prepared into paper
.Substantial amounts of dilute plain boiled water and enriched water can be produced in shaping wet end process, can also be produced in press section process substantial amounts of dilute white
Water, dilute plain boiled water that two processes are produced directly is mixed after concentration, part input enriched water, and stock dilution is entered together with enriched water
Process is reused, and is partly entered white water filter machine and is carried out filtration treatment, remaining dilute plain boiled water is then inputted after softening agent is added
Paper pulp is used.After dilute plain boiled water is handled through white water filter machine, the turbid plain boiled water of generation is directly entered paper pulp and used, the recovery of generation slurry with
The fresh stock prepared enters the processing of stock dilution process together, and the pure water of generation is used for shaping wet end flushing, produced
Raw super clear water is directly entered ultrafiltration process.The concentrate that ultrafiltration process is produced, starch gelatinization is used as into top sizing process
Used with water, the clear water of generation is directly entered counter-infiltration process；The ultra-pure water that counter-infiltration process is produced makes into press section process
With while generation inorganic salts concentrate is handled as waste water, acquisition inorganic salts are used as industrial chemicals, are produced on a small quantity
Whole water through Fenton oxidation handle it is up to standard after directly discharge.
By taking a production line in 500,000 tons of paper/years as an example, 30~40 tons of dilute plain boiled water can be produced in shaping wet end process
With 140~160 tons of enriched water, 10~15 tons of dilute plain boiled water can be also produced in press section process, dilute plain boiled water fully enters dense white
Water, enters the reuse of stock dilution process together with enriched water.30 tons of dilute plain boiled waters enter white water filter machine and carry out filtration treatment,
After enriched water is handled through white water filter machine, size degradation paper pulp is sent to make after about 10 tons of generation 0.5~1.0 kilogram of softening agent of turbid plain boiled waters addition
With 60~75 kilograms of generation reclaim slurry together with the fresh stock prepared into the processing of stock dilution process, produce 10 tons
Pure water is directly entered wet end and used for spraying and cleaning forming net, and common property gives birth to 10 tons of super clear water.10 tons of super clear water enter the excess of imports
Process is filtered, ultrafiltration process produces 2 tons of concentrates, used into top sizing process as starch gelatinization with water；The 8 of ultrafiltration generation
Ton clear water is directly entered counter-infiltration process, and counter-infiltration process produces 7 tons of ultra-pure waters and used for press section spray with cleaning woollen blanket, together
When produce 1 ton of inorganic salts concentrate, inorganic salts concentrate obtains 25~30 kilograms of inorganic salts and is used as chemical industry former after wastewater treatment
Material is used.
It is total to produce about 1 ton of waste water, generate 25~30 kilograms of inorganic salts.
This technique is in specific implementation process, it is necessary to make following innovation on the basis of maintaining existing process equipment constant：
1) softening agent access point is opened up on the plain boiled water pipeline of paper feeding pulpboard size degradation, and in wet end chemistry auxiliary agent dispensing
Between storage tank is set, be attached by measuring pump with the softening agent access point on plain boiled water pipeline with pipeline, softening agent flux control
Control system for paper machine is included to be controlled.
2) ultrafiltration and reverse osmosis membrane separation device are set：It is attached that ultrafiltration is arranged on multi-disc type white water filter machine with reverse osmosis unit
Closely, the super clear water for going out multi-disc type filter is accessed into ultrafiltration apparatus with pipeline, and build under ultrafiltration apparatus ultrafiltration concentration liquid storage tank,
Ultrafiltrate storage tank；Ultrafiltrate groove is connected to reverse osmosis unit by pump pipeline, and builds ultrapure under reverse osmosis unit
Water storage tank, reverse osmosis concentrated liquid storage tank.
3) the concentrate main component that ultrafiltration is produced is water-soluble high-molecular substance, there is certain humidification to paper, is used
Fresh water is substituted in the gelatinization of original surface sizing starch.
Wherein, softening agent be the polyvalent metal cation refuse removal agent disclosed in CN101408016A or other can
Reagent for removing paper making wet part multivalent metal cation.The matter of softening agent solution is added in plain boiled water pipeline softening agent access point
It is 0.1%~1.0 to measure percentage concentration, and the control of quality consumption maintains original life in 0.05~0.1% (with respect to ton paper), other conditions
Production. art condition is constant.
The ultra-pure water that counter-infiltration is obtained is used to supplement fresh water needed for production, and liquid is concentrated by ultrafiltration and is pasted for surface sizing starch
Change water, inorganic salts concentrate send sewage disposal, and final ton paper fresh water magnitude of recruitment drops to 2m3, the maintenance of wet end system electrical conductivity
Near 1400 μ s/cm, ton paper SS discharges are reduced to 60g by current ton paper 450g, and COD is reduced to 100g by 750g.
Papermaking Conventional waste water 1.5 yuan/m of handling up to standard3, 2.0 yuan/m of ultrafiltration+counter-infiltration3, ton paper processing waste water 8m3；Ton
Paper supplement clear water 1m3, 1.2 yuan/m of price3；Ton paper chemical assistant reduces consumption 15% (about 15 yuan)；Ton paper raw material losses are reduced
2% (about 40 yuan)；Metal cation rubbish controlling agent ton paper increases by 15 yuan.So adjusted with 500,000 tons of paper/year, then year economy effect
7,500,000 yuan of benefit, whole year saves the m of water 3,500,0003。
Therefore, reduced in clean paper making of the present invention and produce the method for waste water and be referred to alternatively as that " clean manufacturing is near with waste water
Zero-discharge technology, the implementation of the technology, not only with economic benefit, and with huge social benefit.
Claims (6)
1. reducing the method for producing waste water in a kind of clean paper making, the paper pulp prepared sequentially passes through stock dilution, shaping
After wet end, press section and top sizing process, paper is prepared into；It is characterized in that：Dilute plain boiled water is produced in shaping wet end process
And enriched water, dilute plain boiled water is produced in press section process, dilute plain boiled water that two processes are produced directly is mixed after concentration, partly inputted dense
Plain boiled water, enters the reuse of stock dilution process together with enriched water, partly enters multi-disc type white water filter machine and carries out at filtering
Reason, then input paper pulp is used remaining dilute plain boiled water after softening agent is added；After dilute plain boiled water is handled through multi-disc type white water filter machine, production
Raw turbid plain boiled water is directly entered paper pulp and used, and the recovery slurry of generation enters stock dilution process together with the fresh stock prepared
Processing, the pure water of generation is used for shaping wet end flushing, and the super clear water of generation is directly entered ultrafiltration process；Ultrafiltration process is produced
Raw concentrate, is used into top sizing process for starch gelatinization, and the clear water of generation is directly entered counter-infiltration process；Counter-infiltration
The ultra-pure water that process is produced is used into press section process, is handled while generating small-scale inorganic salt concentrate as waste water,
Inorganic salts and whole water are obtained, whole water meets discharge standard directly discharge.
2. the method for producing waste water is reduced in clean paper making according to claim 1, it is characterised in that in paper feeding slurry
Softening agent access point is opened up on the plain boiled water pipeline of plate size degradation, and storage tank is set in wet end chemistry auxiliary agent weighing area, passes through meter
Amount pump is attached with the softening agent access point on plain boiled water pipeline with pipeline, and softening agent flux control is carried out by control system for paper machine
Control.
3. the method for producing waste water is reduced in clean paper making according to claim 1, it is characterised in that for ultrafiltration
Ultrafiltration and reverse osmosis unit with counter-infiltration process, are located near multi-disc type white water filter machine, will go out multi-disc type white water filter machine
Super clear water ultrafiltration apparatus is accessed with pipeline, and build under ultrafiltration apparatus ultrafiltration concentration liquid storage tank, ultrafiltrate storage tank；By ultrafiltration
Filtrate tank is connected to reverse osmosis unit by pump pipeline, and builds under reverse osmosis unit ultrapure water storage tank, inorganic salts concentration
Liquid storage tank.
4. the method for producing waste water is reduced in clean paper making according to claim 1, it is characterised in that softening agent is
Polyvalent metal cation refuse removal agent.
5. the method for producing waste water is reduced in clean paper making according to claim 2, it is characterised in that in white water pipe
The mass percentage concentration that line softening agent access point adds softening agent solution is 0.1~1.0%.
6. the method for producing waste water is reduced in clean paper making according to claim 1, it is characterised in that softening agent
Quality consumption is the 0.05~0.1% of paper per ton.
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| CN201510544241.7A CN105198116B (en) | 2015-08-31 | 2015-08-31 | The method for producing waste water is reduced in a kind of clean paper making |
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| CN105198116B true CN105198116B (en) | 2017-07-18 |
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| CN107513879B (en) * | 2017-10-23 | 2019-11-05 | 南京林业大学 | A kind of recycling reuse method of mthod of white water from paper making anionic trash |
| CN107881831A (en) * | 2017-10-24 | 2018-04-06 | 苏州华佳纸制品有限公司 | A kind of slurry-water recovery system |
| CN109574314A (en) * | 2018-12-28 | 2019-04-05 | 江苏理文造纸有限公司 | A kind of water treatment system of papermaking green end |
| CN112301780A (en) * | 2020-09-18 | 2021-02-02 | 江苏理文造纸有限公司 | Anionic garbage control process for papermaking system |
| CN114657806A (en) * | 2020-12-23 | 2022-06-24 | 汕头市澄海区溪南东社造纸厂 | Thickened insulating paperboard and production method thereof |
| CN114108356B (en) * | 2021-10-21 | 2024-05-24 | 江苏理文造纸有限公司 | Papermaking white water anion garbage recycling process |
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| JPH0892888A (en) * | 1994-09-26 | 1996-04-09 | Nitto Chem Ind Co Ltd | Scale preventing agent and prevention of scale in deinking process of wastepaper |
| US7510656B2 (en) * | 2006-09-01 | 2009-03-31 | Anticline Disposal, Llc | Waste water treatment method |
| CN101805077B (en) * | 2010-04-29 | 2011-08-03 | 广东金科再造烟叶有限公司 | Treating method of paper-making water recycling use in the production process of reconstituted tobacco |
| CN104432471B (en) * | 2014-12-29 | 2016-03-02 | 安徽中烟再造烟叶科技有限责任公司 | Reconstituted tobacco is manufactured paper with pulp the reuse method of plain boiled water |
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