CN103420542A - Wastewater recycling process for waste paper pulping and manufacturing bobbin paper - Google Patents
Wastewater recycling process for waste paper pulping and manufacturing bobbin paper Download PDFInfo
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- CN103420542A CN103420542A CN2013103486093A CN201310348609A CN103420542A CN 103420542 A CN103420542 A CN 103420542A CN 2013103486093 A CN2013103486093 A CN 2013103486093A CN 201310348609 A CN201310348609 A CN 201310348609A CN 103420542 A CN103420542 A CN 103420542A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 74
- 238000000034 method Methods 0.000 title claims abstract description 47
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a wastewater recycling process for waste paper pulping and manufacturing bobbin paper. The wastewater recycling process is characterized in that waste water is sequentially subjected to high-efficient anaerobic organism processing, aerobic organism processing, ozone-biological activated carbon processing and microfiltration and nanofiltration processing, and water after processing is recycled. Refractory organics such as residual lignin in the wastewater can be effectively removed, COD removal rate is more than 98 percent, and Ca2+ and Mg2+ removal rates are also high and are respectively larger than 75 percent and 85 percent.
Description
Technical field
The present invention relates to field of environment protection and the Industrial Wastewater Treatment engineering of paper industry, be specifically related to a kind of waste paper pulp-making manufacture cop tube paper waste water reclamation and utilize treatment process.
Background technology
The fast development of China's paper industry, cause the contradiction between itself and resource, environment outstanding day by day, the scarcity of resources, the paper-making effluent that are mainly manifested in plant fiber material and water of productive use are day by day serious to the pollution of environment, become two large bottlenecks of its development of restriction.It is main raw material that give up paperboard, disregard message paper, useless book paper, other paper product waste material and commercial pulp (mostly being bleaching wood pulp) generally take in the papermaking of waste paper class, the products such as production white board, boxboard, fluting board.According to estimates, in 2005, China's waste paper utilization rate reached 40%, and waste paper dosage surpasses 2,000 ten thousand tons, and now, China's paper waste consumption has accounted for 52% of paper making pulps total amount.Waste paper is recycled and not only to be conducive to alleviate shortage of resources, protection of the environment, returns enterprise and brings to save and invest, reduce costs, reduce pollution, improve the economic benefit of the each side such as quality.
Paper industry is that the water rich and influential family is again water heavy polluter, and water saving and the anti-pollution of harnessing the river are far-reaching research topics.The processing of current domestic papermaking (waste paper class) waste water is conceived to the part recycle more and makes to process the discharge of water water quality reaching standard upper, and result is that the wastewater discharge and the processing water Effects of Water Quality that reduce are unsatisfactory.In recent years, the closed circulation of paper waste and zero-discharge technology become the important directions of paper waste Processing Technology Research.The pulping and paper-making that the waste paper of abroad take is raw material has much been realized zero release, and China is also making important progress aspect the research and practice of Paper-making Waste Paper And zero-discharge technology.
The waste paper making wastewater zero release can make ton consumption of paper fresh water drop to 1.5m
3, reduce the fresh water processing costs, can avoid discharge of wastewater and cost for wastewater treatment simultaneously, need not pay effluent charge to environmental administration, because fresh water consumption reduces, the plain boiled water temperature be improved, thereby improve the wet end drainability, improve the mass dryness fraction after squeezing, reduce energy consumption for drying.Yet, adopt the certain risk of totally-enclosed existence, be mainly that the burn into of system produces the scent of compound, increase rotten slurry and produce, reduce retention, produce precipitation, cause operation troubles, reduce quality product etc.
Realize that also there are some shortcomings in zero release, such as the smell problem, because plain boiled water can the acidifying anaerobism occur in circulation, produce hydrogen sulfide simultaneously.The concentration of pollutent improves, and the problems such as disconnected paper can occur paper machine operation as gluing thing, anionic trash etc.Because COD concentration is high, easily the wet end at the paper machine generates microbial film.The accumulation meeting of high-temperature and chlorion produces stronger corrosion to the paper machine.For some paper product, such as Case Board, can the raise concentration of calcium ion of the sealing of water loop, easily cause the fouling of whole water system.
For solving degradation problem under system burn into smell that the regenerated papermaking zero release occurs and quality product, need to provide a kind of efficient, clean waste paper making wastewater to recycle technique and device.
Summary of the invention
For solving degradation problem under system burn into smell that the regenerated papermaking zero release occurs and quality product, need to provide a kind of efficient, clean waste paper making wastewater to recycle technique and device.
For realizing purpose of the present invention, the invention provides a kind of waste paper pulp-making manufacture cop tube paper waste water reclamation and utilize treatment process, its novelty is embodied in: waste water is first by efficient anaerobe processing, aerobe processing, ozone---and biological activated carbon processing, micro-filtration and nanofiltration processing, the water outlet after processing is recycled.
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, described efficient anaerobe is processed and referred to: waste water is at first through being hydrolyzed pre-acidification, utilize the hydrolysis anaerobion, remove a part of organic pollutant, water outlet is through anaerobically fermenting, the most of hardly degraded organic substance in waste water decomposed and produce CH
4Bioenergy.Be more preferably, waste water, before being hydrolyzed pre-acidification, is first processed (preferred through the pre-treatment facility, described pre-treatment facility is grid pump well, oblique net, settling tank and/or equalizing tank), remove the larger suspended substance that floats in waste water, reclaim longer fiber, and the regulating water quality water yield.In described grid pump well, interval of grid strip is 15-25mm, and tiltedly net is that (preferred, in described grid pump well, interval of grid strip is 18-22mm to the 100-150 order, tiltedly net is the 120-140 order, be more preferably, in described grid pump well, interval of grid strip is 20mm, and tiltedly net is 130 orders.）。
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, waste water is when being hydrolyzed pre-acidification, parameter is controlled: hydraulic detention time is 6-8h, dissolved oxygen concentration≤0.5mg/L, temperature of reaction maintains 25-30 ℃, and (preferred, parameter is controlled and is: hydraulic detention time is 7h, dissolved oxygen concentration≤0.5mg/L, temperature of reaction maintains 28 ℃).
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, described aerobe is processed and is referred to, in aeration tank, (described aeration tank dissolved oxygen concentration is 2-4mg/L, sludge loading is 0.2-0.4kgBOD/ (kgd), preferably, described aeration tank dissolved oxygen concentration is 3mg/L, sludge loading is 0.3kgBOD/ (kgd)) in remove majority of organic pollutants in water by means of the absorption of aerobic microbiological, oxidation, Degradation, the aeration tank water outlet flows into second pond, the suspended substance in Separation of Water.
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, and preferred scheme is, described second pond hydraulic detention time is 1.5-4h, and hydraulic surface loading is 0.6-1.5m
3/ (m
2H) (preferred, hydraulic detention time is 2h, and hydraulic surface loading is 1m
3/ (m
2H)).
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, described ozone---biological activated carbon is processed and is referred to, the second pond water outlet enters ozone---and the biological activated carbon system is (preferred, described ozone---the biological activated carbon system consists of ozone contact tower and biological activated carbon filter, and described ozone contact tower is the cylinder tower, and its aspect ratio is 6-8, ozone contact time is 5-10min, and ozone dosage is 0.5-1mg/L; In described biological activated carbon filter, the loading height of gac is 1.5-2m, and packing density is 480-500g/L, and the filtering velocity in filter tank is 8-10m/h, and be 10-15min duration of contact.), utilize the oxidation capacity of ozone by long-chain, larger molecular organics degraded in waste water, utilize the dissolved organic matter in charcoal absorption water, microorganism in enrichment water, and remove suspended substance.
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, described micro-filtration refers to, effect by microfiltration membrane equipment is sieved, is filtered particle, bacterium, colloid, make it separate with waste water that (preferred, described microfiltration membrane equipment is that Jiangsu Kaimi Membrane Technology Co., Ltd. produces, and the membrane module adopted is that U.S. GE company produces, micro-filtration diaphragm model is JX, and filtering accuracy is 0.3um).
Foregoing waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, preferred scheme is, described nanofiltration refers to, the micro-filtration water outlet enters nano-filtration membrane equipment, effect by nanofiltration membrane is filtered (preferred by the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion, described nano-filtration membrane equipment is that Hangzhou Saite membrane technique company limited produces, the membrane module adopted is that U.S. GE company produces, nanofiltration diaphragm model is DK, working pressure 0.6-1MPa, filtering accuracy is 0.001-0.1 um).
The present invention also provides a kind of waste paper pulp-making to manufacture the cop tube paper wastewater recycling system, mainly comprises successively connected efficient anaerobe treatment unit, aerobe treatment unit, ozone---biological activated carbon treatment unit, micro-filtration and nanofiltration treatment unit.Described efficient anaerobe treatment unit is comprised of the pre-acidification pool+high efficiency anaerobic reactor of hydrolysis.Described aerobe treatment unit is comprised of aeration tank and second pond.Described ozone---the biological activated carbon treatment unit is comprised of ozone contact tower and biological activated carbon filter.Described ozone contact tower is the cylinder tower, and its aspect ratio is 6 ~ 8.In described biological activated carbon filter, the loading height of gac is 1.5 ~ 2m, and packing density is 480 ~ 500g/L.
A kind of waste paper pulp-making that invention provides is manufactured the cop tube paper waste water reclamation and is utilized technique, comprises as follows step in sequence:
1, efficient anaerobe is processed: waste water passes through the pre-treatment structures such as grid pump well, oblique net, settling tank and equalizing tank at first in turn, remove the larger suspended substance that floats in waste water, reclaim longer fiber, and enter the efficient anaerobe treatment system after the regulating water quality water yield.Described efficient anaerobic system is comprised of the pre-acidification pool+high efficiency anaerobic reactor of hydrolysis.Waste water is at first through being hydrolyzed pre-acidification, utilize the hydrolysis anaerobion, the larger molecular organics of difficult degradation in water is decomposed into to the small organic molecule of easy degraded, realize the chain rupture of broken ring, remove a part of organic pollutant, alleviate the subsequent biological treatment difficulty, water outlet is carried out anaerobically fermenting through the anaerobism feed tank with pump input high efficiency anaerobic reactor, by the biological action of anaerobic granular sludge bed, the most of hardly degraded organic substance in waste water is decomposed and produce CH
4Bioenergy.
In described grid pump well, interval of grid strip is 15 ~ 25mm, and tiltedly net is 100 ~ 150 orders.
The hydraulic detention time of the pre-acidification pool of described hydrolysis is 6-8h, dissolved oxygen concentration≤0.5mg/L.
2, aerobe is processed: anaerobic effluent enters the aerobic treatment system, and absorption, oxidation, Degradation by means of aerobic microbiological in aeration tank are removed majority of organic pollutants in water.The aeration tank water outlet is from flowing into second pond, the suspended substance in Separation of Water.
Described aerobic treatment system is comprised of aeration tank and second pond.Described aeration tank dissolved oxygen concentration is 2 ~ 4mg/L, and sludge loading is 0.2 ~ 0.4kgBOD/ (kgd).Described second pond hydraulic detention time is 1.5 ~ 4h, and hydraulic surface loading is 0.6 ~ 1.5m
3/ (m
2H).
3, ozone---biological activated carbon is processed: the second pond water outlet enters ozone---biological activated carbon system.Utilize the oxidation capacity of ozone by the long-chains such as the colloid of difficult for biological degradation remaining in waste water and xylogen, larger molecular organics degraded, be translated into less and degradable organism.Self there is the characteristic that hole is many, specific surface area is large, the dissolved organic matter in planar water rapidly, also can enrichment water in a large amount of microorganisms.The dissolved organic matter that is attracted to activated carbon surface provides nutrition source for microorganism, and in the carbon bed, the aerobic bacteria of raised growth breeding and the adsorptive power of gac come water outlet to remove suspended substance through flocculation sedimentation tank simultaneously.
Described ozone---the biological activated carbon system is comprised of ozone contact tower and biological activated carbon filter.Described ozone contact tower is the cylinder tower, and its aspect ratio is 6 ~ 8, and ozone contact time is 5 ~ 10min, and ozone dosage is 0.5 ~ 1mg/L.In described biological activated carbon filter, the loading height of gac is 1.5 ~ 2m, and packing density is 480 ~ 500g/L, and the filtering velocity in filter tank is 8 ~ 10m/h, and be 10 ~ 15min duration of contact.The gac adopted is the granular carbon that Shanghai prosperous remittance gac company limited produces, and particle diameter is 8 ~ 30 orders, specific surface area>=1000m
2/ g, intensity>=95%, iodine number>=1000mg/g.
4, the waste water that micro-filtration: through ozone---biological activated carbon is processed enters microfiltration membrane equipment, and the effect by microfiltration membrane is sieved, filtered particle, bacterium, the colloid of 0.1 ~ 10 μ m size, and it is separated with waste water.
Described microfiltration membrane equipment is that Jiangsu Kaimi Membrane Technology Co., Ltd. produces, and the membrane module adopted is the membrane element that U.S. GE company produces, and micro-filtration diaphragm model is JX, and filtering accuracy is 0.3um.
5, nanofiltration: the micro-filtration water outlet enters nano-filtration membrane equipment, the effect by nanofiltration membrane by the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion as Ca
2+, Mg
2+Ions etc., recycle in paper in the source after processing.
Described nano-filtration membrane equipment is that Hangzhou Saite membrane technique company limited produces, and the membrane module adopted is the membrane element that U.S. GE company produces, and nanofiltration diaphragm model is DK, working pressure 0.6 ~ 1MPa, and filtering accuracy is 0.001 ~ 0.1 um.
Advantage of the present invention and positively effect are embodied in:
A. a kind of waste paper pulp-making provided by the invention is manufactured the cop tube paper waste water reclamation and is utilized technique, and its technical process is simple, convenient operation and management.
B. waste water reclamation provided by the invention utilizes technique, and stable effluent quality effectively solves the problems such as system burn into smell that paper making wastewater zero discharge occurs.Simultaneously, this technique has realized the recycle of waste water, has saved great lot of water resources.
C. the present invention adopts ozone---and BAC process is processed the waste water after biochemical treatment, ozone has strong oxidizing property, difficult degradation larger molecular organics residual in waste water can be decomposed into can be biochemical small organic molecule, also there is germicidal action simultaneously, alleviate the pollution of bacterium to the subsequent film separating unit in waste water.
D. the present invention adopts the pretreatment technology that microfiltration systems is processed as nanofiltration, can remove the macromolecular substance in waste water, guarantees the requirement of nanofiltration to influent quality, and the protection nanofiltration membrane component, improve separation efficiency.
E. the present invention adopts nanofiltration system, can effectively remove the hardly degraded organic substances such as lignin residual in waste water, and the COD clearance is up to more than 98%, to Ca
2+, Mg
2+Clearance is also very high, is greater than respectively 75% and 85%.
F. adopting micro-filtration---the nanofiltration membrane separation system, working pressure is low, low to the system dynamic requirement, thereby reduces the investment cost of whole plant.Can realize automatization control, reliable, floor space is little.Only the impellent as membrane sepn with pressure, therefore install simply, and easily maintenance, simple to operate, water conditioning.Reduce the use of chemical agent simultaneously, reduce secondary pollution.Separation efficiency is high, and water quality is good.
The accompanying drawing explanation
Fig. 1 is that a kind of waste paper pulp-making manufacture cop tube paper waste water reclamation provided by the invention utilizes the processing technological flow schematic diagram.
Embodiment
Below in conjunction with technical process Fig. 1 and embodiment, the present invention will be further described.
1 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, and waste water is first by efficient anaerobe processing, aerobe processing, ozone---and biological activated carbon processing, micro-filtration and nanofiltration processing, the water outlet after processing is recycled.
2 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, and waste water is first by efficient anaerobe processing, aerobe processing, ozone---and biological activated carbon processing, micro-filtration and nanofiltration processing, the water outlet after processing is recycled.
Described efficient anaerobe is processed and referred to: waste water, at first through being hydrolyzed pre-acidification, utilizes the hydrolysis anaerobion, removes a part of organic pollutant, and water outlet is through anaerobically fermenting, the most of hardly degraded organic substance in waste water is decomposed and produce CH
4Bioenergy.
Described aerobe is processed and is referred to, absorption, oxidation, Degradation by means of aerobic microbiological in aeration tank are removed majority of organic pollutants in water, and the aeration tank water outlet flows into second pond, the suspended substance in Separation of Water.
Described ozone---biological activated carbon is processed and is referred to, the second pond water outlet enters ozone---the biological activated carbon system, utilize the oxidation capacity of ozone by long-chain, larger molecular organics degraded in waste water, utilize the dissolved organic matter in charcoal absorption water, microorganism in enrichment water, and remove suspended substance.
Described micro-filtration refers to, by the effect of microfiltration membrane equipment, particle, bacterium, colloid is sieved, filters, and it is separated with waste water.
Described nanofiltration refers to, the micro-filtration water outlet enters nano-filtration membrane equipment, and the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion are filtered in the effect by nanofiltration membrane.
3 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, step is substantially the same manner as Example 2, different, waste water, before being hydrolyzed pre-acidification, is first processed through the pre-treatment facility, remove the larger suspended substance that floats in waste water, reclaim longer fiber, and the regulating water quality water yield, described pre-treatment facility is grid pump well, oblique net, settling tank and/or equalizing tank, in described grid pump well, interval of grid strip is 15-25mm, and tiltedly net is the 100-150 order.Waste water is when being hydrolyzed pre-acidification, and parameter is controlled and is: hydraulic detention time is 6-8h, dissolved oxygen concentration≤0.5mg/L, and temperature of reaction maintains 25-30 ℃.
4 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, and waste water is first by efficient anaerobe processing, aerobe processing, ozone---and biological activated carbon processing, micro-filtration and nanofiltration processing, the water outlet after processing is recycled.
Described efficient anaerobe is processed and referred to: waste water, at first through being hydrolyzed pre-acidification, utilizes the hydrolysis anaerobion, removes a part of organic pollutant, and water outlet is through anaerobically fermenting, the most of hardly degraded organic substance in waste water is decomposed and produce CH
4Bioenergy.Waste water, before being hydrolyzed pre-acidification, is first processed through the pre-treatment facility, and described pre-treatment facility is grid pump well, tiltedly net, settling tank and/or equalizing tank, removes the larger suspended substance that floats in waste water, reclaims longer fiber, and the regulating water quality water yield.In described grid pump well, interval of grid strip is 18-22mm, and tiltedly net is the 120-140 order; Waste water is when being hydrolyzed pre-acidification, and parameter is controlled and is: hydraulic detention time is 7h, dissolved oxygen concentration≤0.5mg/L, and temperature of reaction maintains 28 ℃.
Described aerobe is processed and is referred to, absorption, oxidation, Degradation by means of aerobic microbiological in aeration tank are removed majority of organic pollutants in water, and the aeration tank water outlet flows into second pond, the suspended substance in Separation of Water.Described aeration tank dissolved oxygen concentration is 2-4mg/L, and sludge loading is 0.2-0.4kgBOD/ (kgd).Described second pond hydraulic detention time is 1.5-4h, and hydraulic surface loading is 0.6-1.5m
3/ (m
2H).
Described ozone---biological activated carbon is processed and is referred to, the second pond water outlet enters ozone---the biological activated carbon system, utilize the oxidation capacity of ozone by long-chain, larger molecular organics degraded in waste water, utilize the dissolved organic matter in charcoal absorption water, microorganism in enrichment water, and remove suspended substance.Described ozone---the biological activated carbon system consists of ozone contact tower and biological activated carbon filter, and described ozone contact tower is the cylinder tower, and its aspect ratio is 6-8, and ozone contact time is 5-10min, and ozone dosage is 0.5-1mg/L; In described biological activated carbon filter, the loading height of gac is 1.5-2m, and packing density is 480-500g/L, and the filtering velocity in filter tank is 8-10m/h, and be 10-15min duration of contact.
Described micro-filtration refers to, by the effect of microfiltration membrane equipment, particle, bacterium, colloid is sieved, filters, and it is separated with waste water.
Described nanofiltration refers to, the micro-filtration water outlet enters nano-filtration membrane equipment, and the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion are filtered in the effect by nanofiltration membrane.
5 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, and step is as follows:
(1) efficient anaerobe is processed
Waste water passes through grid pump well, oblique pre-treatment structures such as net, settling tank and equalizing tank at first in turn, removes the larger suspended substance that floats in waste water, reclaims longer fiber, and enters the efficient anaerobe treatment system after the regulating water quality water yield.Described efficient anaerobic system is comprised of the pre-acidification pool+high efficiency anaerobic reactor of hydrolysis.Waste water is at first through being hydrolyzed pre-acidification, utilize the hydrolysis anaerobion, the larger molecular organics of difficult degradation in water is decomposed into to the small organic molecule of easy degraded, realize the chain rupture of broken ring, remove a part of organic pollutant, alleviate the subsequent biological treatment difficulty, water outlet is carried out anaerobically fermenting through the anaerobism feed tank with pump input high efficiency anaerobic reactor, by the biological action of anaerobic granular sludge bed, the most of hardly degraded organic substance in waste water is decomposed and produce CH
4Bioenergy.
In described grid pump well, interval of grid strip is 25mm, and tiltedly net is 140 orders.
The hydraulic detention time of the pre-acidification pool of described hydrolysis is 7h, dissolved oxygen concentration≤0.5mg/L.Described high efficiency anaerobic reactor discloses a kind of high-effect anaerobic treatment device that the commercial pulp paper waste is processed that is applied to for the Chinese patent literature of (the Granted publication CN201882975U(application number 201020655366.X that the applicant obtains) that my company manufactures voluntarily, described high efficiency anaerobic reactor inside is provided with water-distributing device, the anaerobism mud discharging device, triphase separator and inner circulating tube, top is provided with gas-liquid separator, outside is provided with external reflux pump, described external reflux pump is connected with high efficiency anaerobic reactor by pipeline, described three separators are divided into, lower two portions), its volumetric loading is 14kgCOD/(m
3d), temperature of reaction maintains 28 ℃.
(2) aerobe is processed
Anaerobic effluent enters the aerobic treatment system, and absorption, oxidation, Degradation by means of aerobic microbiological in aeration tank are removed majority of organic pollutants in water.The aeration tank water outlet is from flowing into second pond, the suspended substance in Separation of Water.
Described aerobic treatment system is comprised of aeration tank and second pond.Described aeration tank dissolved oxygen concentration is 2.4mg/L, and sludge loading is .0.4kgBOD/ (kgd).Described second pond hydraulic detention time is .4h, and hydraulic surface loading is .1.5m
3/ (m
2H).
(3) ozone---biological activated carbon is processed
The second pond water outlet enters ozone---the biological activated carbon system.Utilize the oxidation capacity of ozone by the long-chains such as the colloid of difficult for biological degradation remaining in waste water and xylogen, larger molecular organics degraded, be translated into less and degradable organism.Self there is the characteristic that hole is many, specific surface area is large, the dissolved organic matter in planar water rapidly, also can enrichment water in a large amount of microorganisms.The dissolved organic matter that is attracted to activated carbon surface provides nutrition source for microorganism, and in the carbon bed, the aerobic bacteria of raised growth breeding and the adsorptive power of gac come water outlet to remove suspended substance through flocculation sedimentation tank simultaneously.
Described ozone---the biological activated carbon system is comprised of ozone contact tower and biological activated carbon filter.Described ozone contact tower is the cylinder tower, and its aspect ratio is 8, and ozone contact time is 10min, and ozone dosage is 0.5mg/L.In described biological activated carbon filter, the loading height of gac is 2m, and packing density is 480g/L, and the filtering velocity in filter tank is 10m/h, and be 15min duration of contact.The gac adopted is the granular carbon that Shanghai prosperous remittance gac company limited produces, and particle diameter is 30 orders, specific surface area>=1000m
2/ g, intensity>=95%, iodine number>=1000mg/g.
(4) micro-filtration
Through ozone---the waste water that biological activated carbon is processed enters microfiltration membrane equipment, and the effect by microfiltration membrane is sieved, filtered particle, bacterium, the colloid of 0.1 ~ 10 μ m size, and it is separated with waste water.
Described microfiltration membrane equipment is that Jiangsu Kaimi Membrane Technology Co., Ltd. produces, and the membrane module adopted is the membrane element that U.S. GE company produces, and micro-filtration diaphragm model is JX, and filtering accuracy is 0.3um.
(5) nanofiltration
The micro-filtration water outlet enters nano-filtration membrane equipment, the effect by nanofiltration membrane by the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion as Ca
2+, Mg
2+Ions etc., recycle in paper in the source after processing.
Described nano-filtration membrane equipment is that Hangzhou Saite membrane technique company limited produces, and the membrane module adopted is the membrane element that U.S. GE company produces, and nanofiltration diaphragm model is DK, working pressure 0.9MPa, and filtering accuracy is 0.001 ~ 0.1 um.
6 one kinds of waste paper pulp-makings of embodiment are manufactured the cop tube paper waste water reclamation and are utilized treatment process, and treatment step is substantially the same manner as Example 5.Different: in described grid pump well, interval of grid strip is 20mm, and tiltedly net is 130 orders.Waste water is when being hydrolyzed pre-acidification, and parameter is controlled and is: hydraulic detention time is 7h, dissolved oxygen concentration≤0.5mg/L, and temperature of reaction maintains 28 ℃.Described aeration tank dissolved oxygen concentration is 3mg/L, and sludge loading is 0.3kgBOD/ (kgd).Described second pond hydraulic detention time is 2h, and hydraulic surface loading is 1m
3/ (m
2H).Described ozone contact tower is the cylinder tower, and its aspect ratio is 6-8, and ozone contact time is 8min, and ozone dosage is 0.8mg/L; In described biological activated carbon filter, the loading height of gac is 1.8m, and packing density is 490g/L, and the filtering velocity in filter tank is 9m/h, and be 13min duration of contact.The gac adopted is the granular carbon that Shanghai prosperous remittance gac company limited produces, and particle diameter is 8 ~ 30 orders, specific surface area>=1000m
2/ g, intensity>=95%, iodine number>=1000mg/g.Described microfiltration membrane equipment is that Jiangsu Kaimi Membrane Technology Co., Ltd. produces, and the membrane module adopted is that U.S. GE company produces, and micro-filtration diaphragm model is JX, and filtering accuracy is 0.3um.Described nano-filtration membrane equipment is that Hangzhou Saite membrane technique company limited produces, and the membrane module adopted is that U.S. GE company produces, and nanofiltration diaphragm model is DK, working pressure 0.8MPa, and filtering accuracy is 0.01um.
Test example: utilize embodiment 6 waste paper pulp-makings to manufacture the cop tube paper waste water reclamation and utilize treatment process to process the experimental result that certain paper plant's waste paper pulp-making is manufactured cop tube paper waste water.
Experimental result is as shown in the table:
As can be seen from the above table: with after art breading wastepaper pulping and papermaking cop tube paper waste water of the present invention, the pollutant removal highly significant, the COD clearance is up to 99.1%, the desalination rate is up to 95 ~ 98%, turbidity removal rate is 100%, and final outflow water water quality is very good, has reached the requirement of reuse water standard.
Claims (10)
1. a waste paper pulp-making is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, waste water is first by efficient anaerobe processing, aerobe processing, ozone---and biological activated carbon processing, micro-filtration and nanofiltration processing, the water outlet after processing is recycled.
2. waste paper pulp-making according to claim 1 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described efficient anaerobe is processed and referred to: waste water is at first through being hydrolyzed pre-acidification, utilize the hydrolysis anaerobion, remove a part of organic pollutant, water outlet is through anaerobically fermenting, the most of hardly degraded organic substance in waste water decomposed and produce CH
4Bioenergy.
3. waste paper pulp-making according to claim 2 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, waste water is before being hydrolyzed pre-acidification, first through the pre-treatment facility, process (preferred, described pre-treatment facility is grid pump well, oblique net, settling tank and/or equalizing tank), remove the larger suspended substance that floats in waste water, reclaim longer fiber, and the regulating water quality water yield.
4. waste paper pulp-making according to claim 3 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, in described grid pump well, interval of grid strip is 15-25mm, tiltedly net is that the 100-150 order is (preferred, in described grid pump well, interval of grid strip is 18-22mm, and tiltedly net is the 120-140 order, is more preferably, in described grid pump well, interval of grid strip is 20mm, and tiltedly net is 130 orders).
5. waste paper pulp-making according to claim 2 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, waste water is when being hydrolyzed pre-acidification, parameter is controlled: hydraulic detention time is 6-8h, dissolved oxygen concentration≤0.5mg/L, temperature of reaction maintains 25-30 ℃, and (preferred, parameter is controlled and is: hydraulic detention time is 7h, dissolved oxygen concentration≤0.5mg/L, temperature of reaction maintains 28 ℃).
6. waste paper pulp-making according to claim 1 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described aerobe is processed and is referred to, in aeration tank, (described aeration tank dissolved oxygen concentration is 2-4mg/L, sludge loading is 0.2-0.4kgBOD/ (kgd), preferably, described aeration tank dissolved oxygen concentration is 3mg/L, sludge loading is 0.3kgBOD/ (kgd)) in remove majority of organic pollutants in water by means of the absorption of aerobic microbiological, oxidation, Degradation, the aeration tank water outlet flows into second pond, the suspended substance in Separation of Water.
7. waste paper pulp-making according to claim 6 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described second pond hydraulic detention time is 1.5-4h, and hydraulic surface loading is 0.6-1.5m
3/ (m
2H) (preferred, hydraulic detention time is 2h, and hydraulic surface loading is 1m
3/ (m
2H)).
8. waste paper pulp-making according to claim 1 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described ozone---biological activated carbon is processed and is referred to, the second pond water outlet enters ozone---and the biological activated carbon system is (preferred, described ozone---the biological activated carbon system consists of ozone contact tower and biological activated carbon filter, and described ozone contact tower is the cylinder tower, and its aspect ratio is 6-8, ozone contact time is 5-10min, and ozone dosage is 0.5-1mg/L; In described biological activated carbon filter, the loading height of gac is 1.5-2m, packing density is 480-500g/L, the filtering velocity in filter tank is 8-10m/h, be 10-15min duration of contact), utilize the oxidation capacity of ozone by long-chain, larger molecular organics degraded in waste water, utilize the dissolved organic matter in charcoal absorption water, microorganism in enrichment water, and remove suspended substance.
9. waste paper pulp-making according to claim 1 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described micro-filtration refers to, effect by microfiltration membrane equipment is sieved, is filtered particle, bacterium, colloid, make it separate with waste water that (preferred, described microfiltration membrane equipment is that Jiangsu Kaimi Membrane Technology Co., Ltd. produces, and the membrane module adopted is that U.S. GE company produces, micro-filtration diaphragm model is JX, and filtering accuracy is 0.3um).
10. waste paper pulp-making according to claim 1 is manufactured the cop tube paper waste water reclamation and is utilized treatment process, it is characterized in that, described nanofiltration refers to, the micro-filtration water outlet enters nano-filtration membrane equipment, effect by nanofiltration membrane is filtered (preferred by the organic macromolecule of difficult degradation residual in waste water and divalence or polyvalent ion, described nano-filtration membrane equipment is that Hangzhou Saite membrane technique company limited produces, the membrane module adopted is that U.S. GE company produces, nanofiltration diaphragm model is DK, working pressure 0.6-1MPa, filtering accuracy is 0.001-0.1 um).
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| CN103964651A (en) * | 2014-05-26 | 2014-08-06 | 杭州达康环境工程有限公司 | Method for treating and recycling water pollutants of wastepaper papermaking industry |
| CN106186565A (en) * | 2016-08-24 | 2016-12-07 | 丁武龙 | A kind of dyeing waste water zero-emission recycling system and method |
| CN106277616A (en) * | 2016-08-30 | 2017-01-04 | 义乌市义南纸业有限公司 | A kind of waste water treatment process producing cop tube paper |
| CN106904770A (en) * | 2017-05-06 | 2017-06-30 | 湖南恒安生活用纸有限公司 | A kind of papermaking wastewater treatment system and handling process |
| CN114108356A (en) * | 2021-10-21 | 2022-03-01 | 江苏理文造纸有限公司 | Papermaking white water anion garbage recycling process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103964651A (en) * | 2014-05-26 | 2014-08-06 | 杭州达康环境工程有限公司 | Method for treating and recycling water pollutants of wastepaper papermaking industry |
| CN106186565A (en) * | 2016-08-24 | 2016-12-07 | 丁武龙 | A kind of dyeing waste water zero-emission recycling system and method |
| CN106277616A (en) * | 2016-08-30 | 2017-01-04 | 义乌市义南纸业有限公司 | A kind of waste water treatment process producing cop tube paper |
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| 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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| CN103420542B (en) | 2015-05-20 |
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Denomination of invention: A Process for Recycling and Reusing Wastewater from Waste Paper Pulping and Manufacturing Tube Paper Effective date of registration: 20230419 Granted publication date: 20150520 Pledgee: Ji'nan rural commercial bank Limited by Share Ltd. high tech branch Pledgor: SHANDONG LVQUAN ENVIRONMENTAL TECHNOLOGY CO.,LTD. Registration number: Y2023980038466 |