CN101337750B - Reclamation and comprehensive treatment method for paper-making waste water - Google Patents
Reclamation and comprehensive treatment method for paper-making waste water Download PDFInfo
- Publication number
- CN101337750B CN101337750B CN2008100633600A CN200810063360A CN101337750B CN 101337750 B CN101337750 B CN 101337750B CN 2008100633600 A CN2008100633600 A CN 2008100633600A CN 200810063360 A CN200810063360 A CN 200810063360A CN 101337750 B CN101337750 B CN 101337750B
- Authority
- CN
- China
- Prior art keywords
- paper
- microwave
- reverse osmosis
- equipment
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a comprehensive processing method of paper-making wastewater reuse. By adopting the method, after being pre-processed, paper-making wastewater discharged enters ultra-filtration, reverse osmosis or nanofiltration; membrane permeation liquid can be directly reused for power plants or taken as process water; due to being rich in inorganic salt, various additives, lignin, fibrin, hemicellulose and other organisms, as well as various colonies, concentrated solution which is subjected to membrane interception can not be discharged directly. The concentrated solution is processed by adopting the microwave technique; the concentrated solution after being processed can achieve State Discharge Standards, thereby being discharged directly. Particularly, the pollution prevention and the recovery of a membrane system and the microwave treatment of the membrane concentrated solution can be discharged according to standards. A majority of paper-making wastewater can be reused by adopting the method, and a small amount of residual wastewater can be discharged according to standards, thereby completely solving the problem that the water consumption is large in a paper-making industry.
Description
Technical field
The present invention relates to method of wastewater treatment, relate in particular to a kind of reclamation and comprehensive treatment method for paper-making waste water.
Background technology
Paper industry is the water consumption rich and influential family, is again water heavy polluter.According to statistics, the annual waste discharge amount of China's papermaking enterprise is about 3,000,000,000 tons, accounts for about 15% of national discharged volume of industrial waste water, occupies the 3rd; And the COD quantity discharged occupies one of industrial discharge flow control.Therefore, water resources and Pollution abatement are one of key factor of restriction China paper industry development all the time.According to country and provinces and cities' 2007 yearly correlation policies, new projects' construction must meet overall control and reduce discharging requirement, this is for the papermaking company that will invest new project, its ton paper water displacement must reach higher level, must improve the reclamation rate of waste water, amounting to ton paper draining must be below 5 ton, though domestic paper industry has been done big quantity research aspect reuse water, but it is still far away with the distance of little discharging (ton paper water displacement is less than 5 tons), the draining of ton paper is generally more than 10 tons at present, therefore, adopt the paper waste reuse technology to realize reducing discharging the only way that has become each papermaking enterprise.
Traditional paper waste treatment technology is generally based on biochemical process, the bound fraction materilization freatment method is accomplished qualified discharge, the waste water of minute quantity only is to adopt purposes such as water flowers, flush the toilet after the filtration such as simple sand filtration equipment, because inorganic salt, dissolved organic matter can't carry out removing by simple sand filtration equipment in the waste water, can't use as the process water of having relatively high expectations, membrane separation technique can thoroughly solve the quality of reused water problem, and in fact most indexs will be far above general process water requirement; But the dense water of membrane sepn is because B/C is low, saltiness is high, biodegradability is poor, and its chemical oxygen demand many indexs such as (COD) can't be handled qualified discharge by simple biochemical method, has limited water reuse application in the membrane sepn conduct.
Summary of the invention
The objective of the invention is to have proposed a kind of reclamation and comprehensive treatment method for paper-making waste water at deficiency of the prior art.
Paper waste reuse total system comprises that the well of releasing, topping-up pump, film give treatment system, ultrafiltration apparatus, ultrafiltration product pond, supercharging system, reverse osmosis or nanofiltration equipment, see through liquid outlet, density wastewater during pond, topping-up pump, dosing hybrid reaction system, microwave equipment, settling tank, filtering basin, discharge of wastewater mouth.The well of releasing gives treatment system, ultrafiltration apparatus, ultrafiltration product pond, supercharging system, reverse osmosis or nanofiltration equipment, is connected through the liquid outlet with topping-up pump, film successively; The density wastewater during outlet of the density wastewater during outlet of ultrafiltration apparatus and reverse osmosis or nanofiltration equipment is connected with dense pond, topping-up pump, dosing hybrid reaction system, microwave equipment, settling tank, filtering basin, discharge of wastewater mouth successively.
Described film gives treatment system and adopts coagulation, precipitation and filtration process or coagulation, air supporting and filtration process or coagulation, precipitation and biological aerated filter process or coagulation, precipitation, ozone and BAC process.Ultrafiltration apparatus adopts high-intensity anti-pollution ultra-filtration membrane and air water associating developing technique, and the ultra-filtration membrane material is polypropylene, polyvinylidene difluoride (PVDF), polyethersulfone or polyvinyl chloride.The arranged that reverse osmosis or nanofiltration equipment adopt pollution-resistant membrane element and film pipe waterpower to be evenly distributed.Dosing hybrid reaction system adds silicon oxide, calcium oxide, ferrous sulfate or polymerize aluminum chloride.The microwave frequency of microwave equipment is 915M hertz or 2450M hertz.
Reclamation and comprehensive treatment method for paper-making waste water is that treated paper waste flows into the well of releasing, by topping-up pump the paper waste in the well of releasing being pumped into film gives treatment system and gives processing, enter ultrafiltration apparatus again, paper waste after the filtration sees through liquid and flows into ultrafiltration product pond, enter reverse osmosis or nanofiltration equipment through supercharging system, see through liquid by seeing through liquid outlet carrying out reuse; Density wastewater during in ultrafiltration apparatus and reverse osmosis or the nanofiltration equipment enters the density wastewater during pond, pump into dosing hybrid reaction system through topping-up pump, composite waste enters microwave equipment and carries out the microwave purifying processing, the microwave purifying processed waste water enters settling tank, and the water outlet of supernatant liquor process filtering basin is from the direct qualified discharge of discharge of wastewater mouth; Wherein film gives the treatment system effluent index to require suspended substance is 1～100 mg/litre, chemical oxygen demand is 10～100 mg/litre, the pH value is 6～8, the ultrafiltration apparatus working pressure is 1～3 standard atmospheric pressure, molecular weight cut-off is 10～200,000 dalton, service temperature is 5～45 ℃, reverse osmosis or nanofiltration operation of equipment pressure are 5～20 standard atmospheric pressures, the chemical oxygen demand clearance is 80%～95%, ratio of desalinization is 80%～95%, service temperature is 5 ℃～40 ℃, effective dosage of ferrous sulfate is 10～30 mg/litre in the dosing hybrid reaction system, the dosage of flocculation agent PAC is 10～40 mg/litre, and the microwave frequency of microwave equipment is 915M hertz or 2450M hertz, and retention time of sewage is 5～20 seconds.
The present invention handles concentrated solution by microwave technology, handles the back concentrated solution and can reach discharging standards, directly discharging.Key point is the microwave treatment qualified discharge of the control of film systemic contamination and recovery, membrane concentration liquid.The present invention can be with the logical reuse overwhelming majority of paper waste waste water, and the waste water of a small amount of discharging can qualified discharge, has thoroughly solved the big problem of paper industry water consumption.
Description of drawings
Accompanying drawing is the reclamation and comprehensive treatment method for paper-making waste water process flow diagram;
Among the figure: the well 1 of releasing, topping-up pump 2, film give treatment system 3, ultrafiltration apparatus 4, ultrafiltration product pond 5, supercharging system 6, reverse osmosis or nanofiltration equipment 7, see through liquid outlet 8, density wastewater during pond 9, topping-up pump 10, dosing hybrid reaction system 11, microwave equipment 12, settling tank 13, filtering basin 14, discharge of wastewater mouth 15.
Embodiment
As shown in drawings, paper waste reuse total system comprises that the well 1 of releasing, topping-up pump 2, film give treatment system 3, ultrafiltration apparatus 4, ultrafiltration product pond 5, supercharging system 6, reverse osmosis or nanofiltration equipment 7, see through liquid outlet 8, density wastewater during pond 9, topping-up pump 10, dosing hybrid reaction system 11, microwave equipment 12, settling tank 13, filtering basin 14, discharge of wastewater mouth 15.The well 1 of releasing gives treatment system 3, ultrafiltration apparatus 4, ultrafiltration product pond 5, supercharging system 6, reverse osmosis or nanofiltration equipment 7, is connected through liquid outlet 8 with topping-up pump 2, film successively; The density wastewater during outlet of the density wastewater during outlet of ultrafiltration apparatus 4 and reverse osmosis or nanofiltration equipment 7 is connected with dense pond 9, topping-up pump 10, dosing hybrid reaction system 11, microwave equipment 12, settling tank 13, filtering basin 14, discharge of wastewater mouth 15 successively.
Described film gives treatment system 3 and adopts coagulation, precipitation and filtration process or coagulation, air supporting and filtration process or coagulation, precipitation and biological aerated filter process or coagulation, precipitation, ozone and BAC process.Ultrafiltration apparatus 4 adopts high-intensity anti-pollution ultra-filtration membrane and air water associating developing technique, and the ultra-filtration membrane material is polypropylene, polyvinylidene difluoride (PVDF), polyethersulfone or polyvinyl chloride.The arranged that reverse osmosis or nanofiltration equipment 7 adopt pollution-resistant membrane element and film pipe waterpower to be evenly distributed.Dosing hybrid reaction system 11 adds silicon oxide, calcium oxide, ferrous sulfate and polymerize aluminum chloride.The microwave frequency of microwave equipment 12 is 915M hertz or 2450M hertz.
Reclamation and comprehensive treatment method for paper-making waste water is that treated paper waste flows into the well 1 of releasing, by topping-up pump 2 paper waste in the wells of releasing being pumped into film gives treatment system 3 and gives processing, enter ultrafiltration apparatus 4 again, paper waste after the filtration sees through liquid and flows into ultrafiltration product pond 5, enter reverse osmosis or nanofiltration equipment 7 through supercharging system 6, see through liquid and carry out reuse by seeing through liquid outlet 8; Density wastewater during in ultrafiltration apparatus 4 and reverse osmosis or the nanofiltration equipment 7 enters density wastewater during pond 9, pump into dosing hybrid reaction system 11 through topping-up pump 10, composite waste enters microwave equipment 12 and carries out the microwave purifying processing, the microwave purifying processed waste water enters settling tank 13, supernatant liquor is through filtering basin 14, and water outlet is from discharge of wastewater mouth 15 direct qualified discharges; Wherein film gives treatment system 3 effluent index to require suspended substance is 1～100 mg/litre, chemical oxygen demand is 10～100 mg/litre, the pH value is 6～8, ultrafiltration apparatus 4 working pressures are 1～3 standard atmospheric pressure, molecular weight cut-off is 10～200,000 dalton, service temperature is 5～45 ℃, reverse osmosis or nanofiltration equipment 7 working pressures are 5～20 standard atmospheric pressures, the chemical oxygen demand clearance is 80%～95%, ratio of desalinization is 80%～95%, service temperature is 5 ℃～40 ℃, effective dosage of ferrous sulfate is 10～30 mg/litre in the dosing hybrid reaction system 11, the dosage of flocculation agent PAC is 10～40 mg/litre, and the microwave frequency of microwave equipment 12 is 915M hertz or 2450M hertz, and retention time of sewage is 5～20 seconds.
It can be to adopt coagulation, precipitation and filtration process or coagulation, air supporting and filtration process or coagulation, precipitation and biological aerated filter process or coagulation, precipitation, ozone and BAC process that above-mentioned film gives treatment system.During concrete the selection, depend on the indexs such as pollutent feature, content of waste water, its objective is the water inlet requirement that reaches ultrafiltration, prevent or alleviate the obstruction of ultra-filtration membrane.
Above-mentioned film separating system comprises ultrafiltration apparatus, reverse osmosis or nanofiltration equipment and supporting supercharging system, membrane separation technique is by the selection perviousness function of film pollutants in waste water to be separated, it is the core of waste water recycling, prevent and effectively the pollution of controlling diaphragm system be the key that guarantees the film system stable operation, the pollution of film has the combination of various organism, inorganics and each pollutant such as microbial contamination, colloid, lignocellulose additive.The use temperature of ultrafiltration apparatus, reverse osmosis or nanofiltration equipment is 5 ℃～45 ℃, and the water that sees through reverse osmosis or nanofiltration equipment carries out reuse, and concentrated solution needs further to handle.
Above-mentioned dense water treatment system comprises dosing hybrid reaction system, microwave equipment, settling tank, filtering basin and topping-up pump.Microwave equipment is the core cell of dense water treatment system, to the processing quality decisive role.Microwave technology is to use " polar molecule theory ", by the ultra-high frequency vibration of microwave field to water-soluble particle, heat (total water temperature is almost constant), and add specific medicament and make water-soluble organic pollution chemical oxygen demand, ammonia nitrogen, phosphoric acid salt and sulfide and heavy metal etc. be converted into the solid condensate of insoluble, through rapid precipitation, filtration, and desalination, degreasing make the sewage must be in purification.Water pollutant is under the acting in conjunction of additive and microwave, and water pollutant is carried out " electromagnetic oscillation ", low-temperature heat catalysis, and the long-chain macromolecule polysaccharide material, chain rupture is dissolved and is short chain small molecules, monose material; By catalysis, physical reaction (decolouring) as destroying the colour developing group, water-soluble organic pollutant matter is converted into gases such as simple inorganic substance, water molecules and carbonic acid gas, hydrogen, nitrogen, insoluble (or indissoluble) property material and metal ion are equal to the additive combination, generate the strong coacervation flco thing of settleability, reached the effect of removing chemical oxygen demand, denitrogenation dephosphorizing by separating removal coacervation flco thing again.The clearance of each pollutent all about up to 80% or higher, the direct qualified discharge of water outlet.
The film separating system ultra-filtration membrane can be various ultra-filtration membrane materials such as polypropylene, polyvinylidene difluoride (PVDF), polypropylene, polyvinyl chloride, reverse osmosis (sodium filter) can be various mould materials such as polyamine, cellulose acetate, will consider the Technological Economy comprehensive assessment when specifically using.
Film separating system need prevent the pollution of film when carrying out wastewater treatment, need simultaneously film is effectively cleaned, and needs to be equipped with special cleaning system.The pollution and the purging method that prevent film are the cores that guarantees film separating system steady running.
Below in conjunction with accompanying drawing enforcement of the present invention is stated:
Embodiment: in the accompanying drawings, topping-up pump is fetched water from the well of releasing, the water yield is 440 tons/hour, pressure 0.3MPa enters film and gives treatment facility, adopts self-cleaning filter in the present case, the main macrobead suspended substance of removing, prevent to stop up the cloth aquaporin of ultrafiltration apparatus, ultrafiltration apparatus is totally 6 covers (wherein 1 cover is standby), and every cover produces 80 tons/hour in water, the ultrafiltration apparatus rate of recovery is between 90～95%, according to the waste water situation, the ultrafiltration pollution condition can be adjusted, and produces water and flows into ultrafiltration product pond, and concentrated water drainage is gone into dense pond, ultrafiltration is produced water and is entered reverse osmosis equipment by supercharging system, reverse osmosis equipment is totally two covers, 150 tons/hour of every cover water production rates, the rate of recovery 75%, ratio of desalinization 97%, working pressure moves 3 months and carries out primary chemical cleaning between 0.8～1.5MPa, and the performance recovery rate is more than 98%.Reverse osmosis produced water (electricity is led 30us/cm) is transported to power plant's ion exchange tower and uses as pure water.Dense water 100 tons/hour (chemical oxygen demand is in 150-250 mg/litre) enters dense pond (10).
Waste water enters the dosing mixing system by the water pump pressurization in the dense pond, add that polymerize aluminum chloride, ferrous sulfate and dense water thorough mixing are laggard goes into microwave equipment, the residence time between second, enters sedimentation and filtration integrated machine water outlet qualified discharge at 10-15 again, and water outlet COD is below 65mg/L.
Following table is concrete measured data:
The film separating system service data
Dense water treatment system service data
At last, it needs to be noted that what more than enumerate only is concrete case study on implementation of the present invention.Obviously, the invention is not restricted to above-mentioned case study on implementation, can also many combinations.The all scenario that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (7)
1. paper waste reuse total system is characterized in that comprising that release well (1), first topping-up pump (2), film pretreatment system (3), ultrafiltration apparatus (4), ultrafiltration produces pond (5), supercharging system (6), reverse osmosis or nanofiltration equipment (7), sees through liquid outlet (8), density wastewater during pond (9), second topping-up pump (10), dosing hybrid reaction system (11), microwave equipment (12), settling tank (13), filtering basin (14), discharge of wastewater mouth (15); Release well (1), first topping-up pump (2), film pretreatment system (3), ultrafiltration apparatus (4), ultrafiltration produces pond (5), supercharging system (6), reverse osmosis or nanofiltration equipment (7), sees through liquid outlet (8) and connects successively, and the density wastewater during of the density wastewater during outlet of ultrafiltration apparatus (4) and reverse osmosis or nanofiltration equipment (7) exports, density wastewater during pond (9), second topping-up pump (10), dosing hybrid reaction system (11), microwave equipment (12), settling tank (13), filtering basin (14), discharge of wastewater mouth (15) are connected successively.
2. a kind of paper waste reuse total system according to claim 1 is characterized in that described film pretreatment system (3) adopts coagulation, precipitation and filtration process or coagulation, air supporting and filtration process or coagulation, precipitation and biological aerated filter process or coagulation, precipitation, ozone and BAC process.
3. a kind of paper waste reuse total system according to claim 1, it is characterized in that described ultrafiltration apparatus (4) adopts high-intensity anti-pollution ultra-filtration membrane and air water associating developing technique, the ultra-filtration membrane material is polypropylene, polyvinylidene difluoride (PVDF), polyethersulfone or polyvinyl chloride.
4. a kind of paper waste reuse total system according to claim 1 is characterized in that the arranged that described reverse osmosis or nanofiltration equipment (7) adopt pollution-resistant membrane element and film pipe waterpower to be evenly distributed.
5. a kind of paper waste reuse total system according to claim 1 is characterized in that described dosing hybrid reaction system (11) adds silicon oxide, calcium oxide, ferrous sulfate and polymerize aluminum chloride.
6. a kind of paper waste reuse total system according to claim 1, the microwave frequency that it is characterized in that described microwave equipment (12) is 915M hertz or 2450M hertz.
7. one kind is used the reclamation and comprehensive treatment method for paper-making waste water of system according to claim 1, it is characterized in that treated paper waste flows into the well (1) of releasing, by first topping-up pump (2) paper waste in the well of releasing is pumped into film pretreatment system (3) and carry out pre-treatment, enter ultrafiltration apparatus (4) again, paper waste after the filtration sees through liquid and flows into ultrafiltration product pond (5), enter reverse osmosis or nanofiltration equipment (7) through supercharging system (6), see through liquid and carry out reuse by seeing through liquid outlet (8); Density wastewater during in ultrafiltration apparatus (4) and reverse osmosis or the nanofiltration equipment (7) enters density wastewater during pond (9), pump into dosing hybrid reaction system (11) through second topping-up pump (10), composite waste enters microwave equipment (12) and carries out the microwave purifying processing, the microwave purifying processed waste water enters settling tank (13), supernatant liquor is through filtering basin (14), and water outlet is from the direct qualified discharge of discharge of wastewater mouth (15); Wherein film pretreatment system (3) effluent index requirement suspended substance is 1～100 mg/litre, chemical oxygen demand is 10～100 mg/litre, the pH value is 6～8, ultrafiltration apparatus (4) working pressure is 1～3 standard atmospheric pressure, molecular weight cut-off is 10～200,000 dalton, service temperature is 5～45 ℃, reverse osmosis or nanofiltration equipment (7) working pressure are 5～20 standard atmospheric pressures, the chemical oxygen demand clearance is 80%～95%, ratio of desalinization is 80%～95%, service temperature is 5 ℃～40 ℃, effective dosage of ferrous sulfate is 10～30 mg/litre in the dosing hybrid reaction system (11), the dosage of flocculation agent PAC is 10～40 mg/litre, and the microwave frequency of microwave equipment (12) is 915M hertz or 2450M hertz, and retention time of sewage is 5～20 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100633600A CN101337750B (en) | 2008-08-08 | 2008-08-08 | Reclamation and comprehensive treatment method for paper-making waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100633600A CN101337750B (en) | 2008-08-08 | 2008-08-08 | Reclamation and comprehensive treatment method for paper-making waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101337750A CN101337750A (en) | 2009-01-07 |
| CN101337750B true CN101337750B (en) | 2010-04-14 |
Family
ID=40211944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100633600A Active CN101337750B (en) | 2008-08-08 | 2008-08-08 | Reclamation and comprehensive treatment method for paper-making waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101337750B (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101993160B (en) * | 2010-10-21 | 2012-07-04 | 山东聊城倍杰特环保工程设计有限公司 | Device and process for removing impurities from aluminum-containing waste water and recycling alkali |
| CN102603091A (en) * | 2011-01-19 | 2012-07-25 | 苏州清荷坊环保科技有限公司 | Sewage treatment system |
| CN102173542A (en) * | 2011-03-21 | 2011-09-07 | 开滦能源化工股份有限公司 | Centralized water supply method integrating sewage reuse and sea water desalination |
| CN102408173A (en) * | 2011-09-21 | 2012-04-11 | 辽宁调兵山煤矸石发电有限责任公司 | Method and device for preparing make-up water for power station boilers from municipal reclaimed water |
| CN102964025B (en) * | 2012-10-26 | 2014-10-29 | 陕西科技大学 | Method for prevention and elimination of scaling in papermaking wastewater closed circulation system |
| CN103011502B (en) * | 2012-12-05 | 2014-06-18 | 浙江理工大学 | Method for deeply treating waste paper pulping and papermaking comprehensive wastewater by using ultrafiltration membrane |
| CN103342431B (en) * | 2013-07-23 | 2015-02-18 | 南京工业大学 | Papermaking pulping tail water recycling process |
| CN104370405B (en) * | 2014-10-27 | 2016-04-13 | 浙江开创环保科技股份有限公司 | A kind for the treatment of process of high rigidity height salinity wastewater zero discharge |
| CN104787931B (en) * | 2015-04-24 | 2016-11-09 | 恒安（芜湖）纸业有限公司 | A kind of deep treatment system of papermaking wastewater and technique |
| CN105084613A (en) * | 2015-08-10 | 2015-11-25 | 厦门世达膜科技有限公司 | Industrial wastewater zero discharging technology for phytoextraction industry |
| CN105330060A (en) * | 2015-11-05 | 2016-02-17 | 四川新能水处理工程有限公司 | Graphene wastewater treating and recycling system and treating and recycling technology thereof |
| CN105439390B (en) * | 2015-12-30 | 2018-08-14 | 南京九思高科技有限公司 | A kind of lignin waste water recycling process |
| CN105923814B (en) * | 2016-04-26 | 2019-01-15 | 湖南卡普斯环保科技股份有限公司 | The method that bi-membrane method handles wet-process fiber board production waste water |
| CN106219846A (en) * | 2016-08-25 | 2016-12-14 | 四川深蓝环保科技有限公司 | Percolate film-filter concentration liquid processing method |
| CN107915279A (en) * | 2016-10-09 | 2018-04-17 | 上海漕泾热电有限责任公司 | Reverse osmosis concentrated water treatment facilities and processing method |
| CN106746356A (en) * | 2017-01-23 | 2017-05-31 | 同舟纵横（厦门）流体技术有限公司 | A kind of agricultural chemicals waste water processing system and handling process |
| CN106865892A (en) * | 2017-03-07 | 2017-06-20 | 轻工业环境保护研究所 | Reducing rules black liquor by wet method alkali reclaiming method |
| CN107365030A (en) * | 2017-08-31 | 2017-11-21 | 宜宾海丝特纤维有限责任公司 | It is a kind of to handle half fine method and apparatus in viscose glue sewage |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837073A (en) * | 2006-04-12 | 2006-09-27 | 华中科技大学 | A kind of wastewater denitrification treatment method |
| CN1966419A (en) * | 2006-11-22 | 2007-05-23 | 哈尔滨工业大学 | Method for removing pollutant of water with synergistic effect of water treatment agent and microwave |
| CN101186418A (en) * | 2007-12-13 | 2008-05-28 | 金东纸业(江苏)有限公司 | Method for reclaiming and utilizing paper-making industrial waste water |
-
2008
- 2008-08-08 CN CN2008100633600A patent/CN101337750B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1837073A (en) * | 2006-04-12 | 2006-09-27 | 华中科技大学 | A kind of wastewater denitrification treatment method |
| CN1966419A (en) * | 2006-11-22 | 2007-05-23 | 哈尔滨工业大学 | Method for removing pollutant of water with synergistic effect of water treatment agent and microwave |
| CN101186418A (en) * | 2007-12-13 | 2008-05-28 | 金东纸业(江苏)有限公司 | Method for reclaiming and utilizing paper-making industrial waste water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101337750A (en) | 2009-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101337750B (en) | Reclamation and comprehensive treatment method for paper-making waste water | |
| CN102826686B (en) | Double-membrane treatment method of iron and steel industrial wastewater | |
| CN202358976U (en) | Glass wastewater treatment equipment | |
| CN101955282A (en) | Method for realizing zero emission of dyeing wastewater with high salinity in printing and dyeing enterprises | |
| CN103112978B (en) | Advanced treatment method for cotton slurry paper-making wastewater | |
| CN106348547B (en) | An integrated process system and method for banknote printing wastewater treatment | |
| CN108017230A (en) | A kind of heavy metal waste water treatment system and method | |
| CN102020392A (en) | Dyeing reclaimed water recycling process and equipment | |
| CN201990576U (en) | Dyeing waste water treatment system | |
| CN102219327B (en) | Membrane method treatment process for caprolactam waste water | |
| CN101723551B (en) | Coking wastewater recycling treatment method | |
| CN100336746C (en) | Method of preparing pure water using metallurgic sewage | |
| CN205347102U (en) | Degree of depth processing system of direct liquefaction of coal sewage | |
| CN102701326A (en) | Seawater desalinizing technology deeply treated by reverse osmosis membrane after mixing wastewater with seawater | |
| CN104355451B (en) | The technique of percolate bio-chemical effluent recycling | |
| CN110642382A (en) | Anaerobic and aerobic composite biological treatment desalting method | |
| CN104402138A (en) | Papermaking wastewater treatment method | |
| CN206886885U (en) | A kind of hotting mask coupling seawater desalination plant | |
| CN200988816Y (en) | Garbage percolating liquid treating system based on film biological reactor-filter film technology | |
| CN100357202C (en) | Liquid flow type capacitance pretreatment method for sea water desalination | |
| CN108083533B (en) | Circulating water zero-discharge quality-divided recycling treatment device and treatment method thereof | |
| CN207537309U (en) | IGCC plant coal gasification and sulfur-bearing composite waste treatment for reuse Zero discharging system | |
| CN101481193A (en) | Zero discharge process for amino acid wastewater | |
| CN116655172A (en) | Reverse osmosis-based electric power light sewage and wastewater treatment system and process | |
| CN204369694U (en) | A kind for the treatment of system of rubbish percolation liquid membrane concentrated solution |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Reclamation and comprehensive treatment method for paper-making waste water Effective date of registration: 20110824 Granted publication date: 20100414 Pledgee: Zhejiang Huachang guarantee investment Co., Ltd. Pledgor: Zhejiang Kaichuang EP Technology Co., Ltd. Registration number: 2011990000323 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20121205 Granted publication date: 20100414 Pledgee: Zhejiang Huachang guarantee investment Co., Ltd. Pledgor: Zhejiang Kaichuang EP Technology Co., Ltd. Registration number: 2011990000323 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Reclamation and comprehensive treatment method for paper-making waste water Effective date of registration: 20121205 Granted publication date: 20100414 Pledgee: Zhejiang Huachang guarantee investment Co., Ltd. Pledgor: Zhejiang Kaichuang EP Technology Co., Ltd. Registration number: 2012990000751 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140515 Granted publication date: 20100414 Pledgee: Zhejiang Huachang guarantee investment Co., Ltd. Pledgor: Zhejiang Kaichuang EP Technology Co., Ltd. Registration number: 2012990000751 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG KAICHUANG ENVIRONMENTAL PROTECTION TECHNO Free format text: FORMER NAME: ZHEJIANG KAICHUANG EP TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 301 room 2, building 11, Haishu Road, Hangzhou, Yuhang District, Zhejiang, 311121 Patentee after: Environmental protection Science and Technology Co., Ltd. is started in Zhejiang Address before: Five 310030 Hangzhou Road, Zhejiang province Xihu District science and Technology Park of West Lake Xiyuan No. six Patentee before: Zhejiang Kaichuang EP Technology Co., Ltd. |