CN100526241C - Grog paper-making waste water physicochemical circulation biochemical treatment zero discharging technique - Google Patents
Grog paper-making waste water physicochemical circulation biochemical treatment zero discharging technique Download PDFInfo
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- CN100526241C CN100526241C CNB2007100622993A CN200710062299A CN100526241C CN 100526241 C CN100526241 C CN 100526241C CN B2007100622993 A CNB2007100622993 A CN B2007100622993A CN 200710062299 A CN200710062299 A CN 200710062299A CN 100526241 C CN100526241 C CN 100526241C
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Abstract
The invention relates to a zero discharge technique for physicochemical circulation and biochemical treatment used in clinker papermaking waste water, comprising a physicochemical treatment process and a biochemical treatment process. The invention is characterized in that: papermaking white water and beating and bleaching waste water are sent into a pre-sedimentation pond of a biochemical treatment process after physicochemical treatment, the papermaking white water and the beating and bleaching waste water in physicochemical treatment are treated in a grit tower and a sedimentation tower of the physicochemical treatment process, then the newly formed water is sent into a mud-sand condensation tank of the biochemical treatment process; Finally the biochemical treated waste water is recovered and reused. The invention is a papermaking waste water treatment technique of low operation cost and engineering investment, and high treatment effect, and can realize true zero discharge.
Description
One, technical field:
The present invention relates to a kind of paper-making effluent treating process, is a kind of materialization circulation, biochemical treatment---grog paper-making waste water Zero-discharge treating process.
Two, background technology:
Present grog paper-making waste water treatment process mainly contains: dosing coagulation, precipitation, catalytic oxidation, two settling tanks, discharging; Dosing coagulation, air supporting, catalytic oxidation, two settling tanks, filtration, reuse.This waste water treatment process is that the paper machine white water that will produce in the grog paper-making engineering enters beater floor, and the waste water of discharging is the waste wash liquor that washing room is discharged, waste water at first adds flocculation agent, makes the suspended substance cohesion in the waste water, removes by precipitation or pneumatically supported mode; Waste water enters contact-oxidation pool then, by the organic pollutant in the effect water of decomposition of aerobic microbiological film, separates the mud and the water that come off by second pond and can realize qualified discharge.This processing wastewater treatment capacity big (60 tons of waste water of paper discharging per ton), construction investment is big; Add flocculation agent, working cost height, the expense of handling back waste water per ton is about 1.3 yuan.
Also have now some grog paper-making waste water technique of zero discharge it be by:
(1) short distance circulation method: plain boiled water, precipitation, reuse plain boiled water; Making beating pulp washing water, remove sand, reuse making beating pulp washing.This waste water treatment process be will produce in the grog paper-making process paper machine white water remove silt in anhydrating through the desilting device, and then isolate suspended substance through settling tank, the water of discharge is got back to and is continued on the paper machine to use when plain boiled water.The waste water that making beating and pulp washing are discharged is got back to the water that carries paper pulp fiber and is continued use in troughing and the pulp washer through after removing sandcastle and removing silt.Thereby realize the zero release of waste water.This technology is handled reuse with the moisture class in the grog paper-making process, has realized zero release, and processing costs is also very low, and construction investment is also smaller.But this technology exists defective: 1, organic pollutant, salinity (mainly are Ca in the waste water
2+), pollutent such as secondary adhesive and anionic trash can along with cycle index to increase concentration more and more higher, thereby the quality of paper is exerted an influence.2, along with the recycling of water, the temperature of water can raise gradually, makes the anerobe breeding, makes water smelly, rotten.3, water can not be realized the circulation in indefinitely.
(2) biochemical circulation method: dosing coagulation, precipitation, anaerobic reactor, intermediate sedimentation, contact-oxidation pool, second pond, reuse.This waste water treatment process is that the paper machine white water that will produce in the paper-making process enters the making beating washing room, and the waste water of discharging is the waste wash liquor that washing room is discharged, waste water at first adds flocculation agent, makes the suspended substance cohesion in the waste water, removes by precipitation or pneumatically supported mode; Water enters anaerobic reactor then, and the physiological action owing to anerobe in anaerobic reactor (mainly is Ca with organic pollutant, salinity in the waste water
2+), pollutent such as secondary adhesive and anionic trash is decomposed into CH
4, CO
2With VFA etc., separate anaerobic sludge and water from the effusive water of anaerobic reactor through the intermediate sedimentation pond, water enters in the contact-oxidation pool in contact-oxidation pool that remaining organic pollutant thoroughly is decomposed into CO by aerobic microbiological in the water
2And H
2O.Water is purified.This waste water treatment process can (mainly be Ca with the organic pollutant in the waste water, salinity
2+), pollutents such as secondary adhesive and anionic trash thoroughly remove, and can realize the circulation in indefinitely of waste water, really realize the zero release of waste water.But the water yield of this art breading is big, and construction investment is big, wastewater treatment working cost height.
Three, summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of technology is simple, treatment effect good, facility investment is little, running cost is low grog paper-making waste water physicochemical circulation, biochemical treatment zero discharging technique are provided.
Purpose of the present invention can realize by following technical scheme:
A kind of grog paper-making waste water physicochemical circulation, biochemical treatment zero discharging technique, it is made up of materialization treatment process and biochemical treatment operation.Paper machine white water in the materialization treatment process and making beating waste wash liquor small part after materialization is handled enter the heavy pond of giving in the biochemical treatment operation, the waste water that paper machine white water in the materialization treatment process and making beating waste wash liquor are husky through the plain boiled water desilting tower row of materialization treatment process and the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of enters the silt concentration basin in the biochemical treatment operation, the waste water reclamation recycle after the biochemical treatment operation is handled.
Described materialization treatment process is made up of paper machine white water and making beating waste wash liquor treatment process, the paper machine white water treatment process is meant after paper machine white water enters the paper machine white water tank squeezes into plain boiled water desilting tower by pump with it, after handling, plain boiled water desilting tower enters the plain boiled water vertical sedimentation tank, send into reuse paper machine by the water major part that the plain boiled water vertical sedimentation tank is handled, one small part enters the heavy pond of giving in the biochemical treatment operation, the silt of discharging from plain boiled water desilting tower enters the silt concentration basin the biochemical treatment operation, and the paper pulp that the plain boiled water vertical sedimentation tank is discharged enters machine hand's section; Making beating waste wash liquor treatment process is meant after the making beating waste wash liquor enters making beating pulp washing tank squeezes into making beating pulp washing vertical sedimentation tank by pump with it, economy-combat is washed and starched vertical sedimentation tank processing back major part and is sent into troughing and pulp washer, one small part enters the heavy pond of giving in the biochemical treatment operation, and the mud of discharging from making beating pulp washing vertical sedimentation tank enters the silt concentration basin the biochemical treatment operation;
Described biochemical treatment operation is meant that small part plain boiled water and small part making beating waste wash liquor that the materialization operation is discharged enter the heavy pond of giving of biochemical treatment operation; Overflow entered equalizing tank after plain boiled water desilting tower row waste water husky and that the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of entered the silt concentration basin, promote to enter by sump pump again and give in the heavy pond, after giving heavy pond separating suspension, enter in the anaerobic reactor, in anaerobic reactor, remove organic pollutant, salinity, secondary adhesive and anionic trash, after separating anaerobic sludge and water through the intermediate sedimentation pond then, water enters in the contact-oxidation pool, makes water reach thorough purification under the effect of aerobic microbiological; Then, through second pond separated sludge and water, water comes back to and continues on the paper machine to use.
The treating processes of materialization circulation of the present invention, biochemical treatment-grog paper-making waste water technique of zero discharge and principle and effect are:
Making beating, pulp washing water → making beating pulp washing vertical sedimentation tank → making beating and pulp washer;
Plain boiled water → plain boiled water desilting tower → plain boiled water vertical sedimentation tank → paper machine white water;
Give heavy pond → anaerobic pond → contact-oxidation pool → time paper machine;
A) do not need to add flocculation agent:
Whole Waste Water Treatment does not add any flocculation agent, and working cost is very low.
B) materialization circulation:
Grog paper-making waste water is handled respectively according to wastewater property, and plain boiled water returns the paper machine when plain boiled water continuation use through desilting and post precipitation, and discharges a small part plain boiled water.Making beating and waste wash liquor continue in the stock tank to use through returning after the precipitation process, and discharge a small part waste water.
C) biochemical treatment:
One small part plain boiled water of discharging and small part making beating waste wash liquor enter the heavy pond of giving of biochemical treatment operation; Overflow entered equalizing tank after plain boiled water desilting tower row waste water husky and that the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of entered the silt concentration basin, give in the heavy pond promoting by sump pump to enter, enter behind the separating suspension in the anaerobic reactor, in anaerobic reactor, remove organic pollutant, salinity (mainly is Ca
2+), secondary adhesive and anionic trash, separate anaerobic sludge and water through the intermediate sedimentation pond then after, water enters in the contact-oxidation pool, makes water reach thorough purification under the effect of aerobic microbiological; Then, through second pond separated sludge and water, water comes back to and continues on the paper machine to use.
D) construction investment is little:
Use because of the materialization recycle system makes most of water cycle, make the water yield of biochemical treatment very little, only papermaking every day need be dissolved in CODcr in the waste water,, salinity (mainly is Ca
2+), secondary adhesive and anionic trash remove and get final product, and makes the biochemical treatment system scale have only original 20%.Construction investment reduces by 60%.
The present invention compared with prior art has following advantage:
1, need not use any flocculation agent, working cost is low.
2, produce the character materialization cycle of treatment of waste water according to grog paper-making.
3, the biochemical treatment project scale is little: only grog paper-making need be produced water-soluble pollutent every day and decomposed by anaerobism, technology such as aerobic, can realize that recycle the indefinitely of water.
4, the investment of the existing grog paper-making waste water treatment project of the output investment ratio of whole wastewater zero discharge engineering reduces about 60%.
5, construction investment is little, treatment effect good, can realize real zero release.
Four, description of drawings:
Accompanying drawing is a process flow diagram of the present invention
Five, embodiment
As shown in the figure: grog paper-making waste water physicochemical circulation, biochemical treatment zero discharging technique, it is made up of materialization treatment process and biochemical treatment operation.Paper machine white water in the materialization treatment process and making beating waste wash liquor small part after materialization is handled enter the heavy pond of giving in the biochemical treatment operation, the waste water that paper machine white water in the materialization treatment process and making beating waste wash liquor are husky through the plain boiled water desilting tower row of materialization treatment process and the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of enters the silt concentration basin in the biochemical treatment operation, the waste water reclamation recycle after the biochemical treatment operation is handled.Described materialization treatment process is made up of paper machine white water and the useless treatment process of making beating pulp washing, the paper machine white water treatment process is meant after paper machine white water enters the plain boiled water tank squeezes into plain boiled water desilting tower by pump with it, after handling, plain boiled water desilting tower enters the plain boiled water vertical sedimentation tank, send into reuse paper machine by the water major part that the plain boiled water vertical sedimentation tank is handled, a small part enters the heavy pond of giving in the biochemical treatment operation.The silt of discharging from plain boiled water desilting tower enters the silt concentration basin the biochemical treatment operation, and the paper pulp that the plain boiled water vertical sedimentation tank is discharged enters machine hand's section; Making beating waste wash liquor treatment process is meant after the making beating waste wash liquor enters making beating pulp washing tank squeezes into making beating pulp washing vertical sedimentation tank by pump with it, economy-combat is washed and starched vertical sedimentation tank processing back major part and is sent into troughing and pulp washer, one small part enters the heavy pond of giving in the biochemical treatment operation, and the mud of discharging from making beating pulp washing vertical sedimentation tank enters the silt concentration basin the biochemical treatment operation.Described biochemical treatment operation is meant that small part plain boiled water and small part making beating waste wash liquor that the materialization operation is discharged enter the heavy pond of giving of biochemical treatment, overflow entered equalizing tank after plain boiled water desilting tower row waste water husky and that the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of entered the silt concentration basin, promote to enter by sump pump again and give in the heavy pond, after giving heavy pond separating suspension, enter in the anaerobic reactor, in anaerobic reactor, remove organic pollutant, salinity, pollutents such as secondary adhesive and anionic trash, after separating anaerobic sludge and water through the intermediate sedimentation pond then, water enters in the contact-oxidation pool, makes water reach thorough purification under the effect of aerobic microbiological; Then, through second pond separated sludge and water, water comes back to and continues on the paper machine to use.
Its working process is: paper machine white water waste water at first enters the plain boiled water tank, under the lifting of sump pump, enter plain boiled water desilting tower then, silt separates with water, paper pulp in the water in plain boiled water desilting tower, the waste water that carries paper pulp enters the plain boiled water vertical sedimentation tank, paper pulp fiber big in the plain boiled water vertical sedimentation tank is realized separating with water, and the water that carries staple fibre is back to the paper machine to be continued to use.Sedimentary silt is discharged in the silt concentration basin in the plain boiled water desilting tower.Sedimentary paper pulp fiber enters machine hand's section in the plain boiled water vertical sedimentation tank.
Making beating and waste wash liquor at first enter making beating pulp washing tank, under the lifting of sump pump, enter making beating pulp washing vertical sedimentation tank then, silt, big fiber and water sepn in the water in making beating pulp washing vertical sedimentation tank, the water that carries staple fibre is back to troughing and pulp washer.Sedimentary mud is discharged in the silt concentration basin in the making beating pulp washing vertical sedimentation tank.
Clarify effusive water from the silt concentration basin and enter equalizing tank, under the lifting of sump pump, enter then and give heavy pond; Plain boiled water after small part making beating after materialization is handled and pulp washing water, a small part materialization are handled flows directly into and gives heavy pond; Enter anaerobic reactor from giving the water of discharging in heavy pond, the organic pollutant in anaerobic reactor in the waste water, salinity (mainly are Ca
2+), pollutent such as secondary adhesive and anionic trash can be broken down into CH under the physiological action of anerobe
4, CO
2With VFA etc.The water that comes out from anaerobic reactor carries anaerobism part mud, realizes separating of water and anaerobic sludge in the intermediate sedimentation pond; The water that comes out from middle settling tank flows into contact-oxidation pool, and remaining organic pollutant thoroughly is decomposed into CO by aerobic microbiological in the water in contact-oxidation pool
2And H
2O.Water is purified.
Short and small fiber in the water is through the anaerobic sludge of anaerobic reactor and the absorption and the interception of the aerobic microbiological in the contact-oxidation pool; The absorption of the precipitating sludge in intermediate sedimentation pond and the settled sludge of second pond and interception, the content of the suspended substance in the water are very low, can be back to the paper machine fully.
The mud that silt, intermediate sedimentation pond and the second pond that the making beating pulp washing vertical sedimentation tank that making beating and waste wash liquor are handled and the desilting tower of paper machine white water system wastewater treatment are discharged discharged all enters in the silt concentration basin, dense thick silt in the silt concentration basin and mud dig out the back outward transport and handle, and can be used as organic farm manure and use.The water of clarifying out is back to equalizing tank, continues to accept processing.
Claims (1)
1, a kind of materialization circulation, biochemical treatment grog paper-making waste water technique of zero discharge, it is made up of materialization treatment process and biochemical treatment operation, it is characterized in that: the paper machine white water in the materialization treatment process and making beating waste wash liquor small part after materialization is handled enter the heavy pond of giving in the biochemical treatment operation, the waste water that paper machine white water in the materialization treatment process and making beating waste wash liquor are husky through the plain boiled water desilting tower row of materialization treatment process and the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of enters the silt concentration basin in the biochemical treatment operation, the waste water reclamation recycle after the biochemical treatment operation is handled;
Described materialization treatment process is made up of paper machine white water and making beating waste wash liquor treatment process, the paper machine white water treatment process is meant after paper machine white water enters the plain boiled water tank squeezes into plain boiled water desilting tower by pump with it, after handling, plain boiled water desilting tower enters the plain boiled water vertical sedimentation tank, send into reuse paper machine by the water major part that the plain boiled water vertical sedimentation tank is handled, one small part enters the heavy pond of giving in the biochemical treatment operation, the silt of discharging from plain boiled water desilting tower enters the silt concentration basin the biochemical treatment operation, and the paper pulp that the plain boiled water vertical sedimentation tank is discharged enters machine hand's section; Making beating waste wash liquor treatment process is meant after the making beating waste wash liquor enters making beating pulp washing tank squeezes into making beating pulp washing vertical sedimentation tank by pump with it, economy-combat is washed and starched vertical sedimentation tank processing back major part and is sent into troughing and pulp washer, one small part enters the heavy pond of giving in the biochemical treatment operation, and the mud of discharging from making beating pulp washing vertical sedimentation tank enters the silt concentration basin the biochemical treatment operation; Described biochemical treatment operation is meant that small part plain boiled water and small part making beating waste wash liquor that the materialization operation is discharged enter the heavy pond of giving of biochemical treatment operation; Overflow entered equalizing tank after plain boiled water desilting tower row waste water husky and that the plasma discharge of making beating pulp washing vertical sedimentation tank is taken out of entered the silt concentration basin, promote to enter by sump pump again and give in the heavy pond, after giving heavy pond separating suspension, enter in the anaerobic reactor, in anaerobic reactor, remove organic pollutant, salinity, secondary adhesive and anionic trash, after separating anaerobic sludge and water through the intermediate sedimentation pond then, water enters in the contact-oxidation pool, makes water reach thorough purification under the effect of aerobic microbiological; Then, through second pond separated sludge and water, water comes back to and continues on the paper machine to use.
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| CNB2007100622993A CN100526241C (en) | 2007-07-12 | 2007-07-12 | Grog paper-making waste water physicochemical circulation biochemical treatment zero discharging technique |
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| CNB2007100622993A CN100526241C (en) | 2007-07-12 | 2007-07-12 | Grog paper-making waste water physicochemical circulation biochemical treatment zero discharging technique |
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| CN102351374B (en) * | 2011-07-06 | 2013-06-05 | 广州中环万代环境工程有限公司 | Chloropropylene oxide wastewater and papermaking wastewater mixed processing method |
| CN103626323B (en) * | 2012-08-20 | 2015-08-12 | 杰瑞能源服务有限公司 | The processing method of a kind of pharmacy, paper waste advanced treatment and special purpose device |
| CN103938478A (en) * | 2014-04-16 | 2014-07-23 | 芜湖富祺科技有限公司 | Cement grinding aid and method for fabricating cement grinding aid by using papermaking waste liquor |
| CN108439717A (en) * | 2018-04-25 | 2018-08-24 | 东至东方纸业有限公司 | A kind of papermaking sewage processing system |
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Non-Patent Citations (4)
| Title |
|---|
| 废水零排放在废纸造纸废水中的应用. 张艳凤，孙燕铃，边江凤.宁夏工程技术，第6卷第2期. 2007 |
| 废水零排放在废纸造纸废水中的应用. 张艳凤，孙燕铃，边江凤.宁夏工程技术，第6卷第2期. 2007 * |
| 生物-物化工艺处理造纸工业废水实例分析. 邢书彬.重庆环境科学，第22卷第3期. 2000 |
| 生物-物化工艺处理造纸工业废水实例分析. 邢书彬.重庆环境科学，第22卷第3期. 2000 * |
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