CN102767109A - Method of using recycled water of urban sewage to produce corrugating medium - Google Patents
Method of using recycled water of urban sewage to produce corrugating medium Download PDFInfo
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- CN102767109A CN102767109A CN2011101150093A CN201110115009A CN102767109A CN 102767109 A CN102767109 A CN 102767109A CN 2011101150093 A CN2011101150093 A CN 2011101150093A CN 201110115009 A CN201110115009 A CN 201110115009A CN 102767109 A CN102767109 A CN 102767109A
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Abstract
The invention discloses a method of using recycled water of urban sewage to produce corrugating medium. The method is characterized in that recycled water of urban sewage is treated to obtain treated wastewater which is used as a water source to prepare the corrugating medium. The steps of treating the recycled water of urban sewage include: (1) primary filtering; (2) precipitate pretreating; (3) disinfecting; (4) secondary filtering; (5) ventilation blow removing; and (6) using polyamine for wet-end chemical control. The method makes full use of recycled resources and saves water, so that recycling is realized. In addition, water resource utilization rate is increased, and the utilization ways of exterior drainage of urban sewage treatment plants are widened.
Description
Technical field
The present invention relates to a kind of method of utilizing recycle-water to carry out papermaking, relating in particular to and adopting the municipal sewage recycled water is the method that the water source produces high-strength corrugated base paper.
Background technology
China is the very nervous country of a water resource; In 600 cities, the whole nation insufficient water surpass 2/3, very serious because of groundwater mining, cause ground and descend; Only the funnel that descends significantly of North China's formation just reaches 20 many places, and the gross area reaches 70,000 square kilometres.
Paper industry is the water rich and influential family, in recent years, shows according to statistics, and the production ton slurry water withdrawal of China's paper industry does not wait at the 60-300 ton, and ton paper water loss of manufacturing paper with pulp is also many at the 50-100 ton.General secondary stock factory or pulp from decoloured waste paper factory, except that the advanced enterprise of minority, it is also many at the 30-50 ton to produce ton slurry water consumption.Important technology as China's paper industry; State Economic and Trade Commission water saving is done and is proposed and as the emphasis demonstration project three technologies such as dense operation in the white water recycle of many disk filters and circulating and recovering, the pulping process, closed screening are arranged; Being China's paper industry water saving emphasis, also is key link and the important water-saving technology that reduces paper making water.According to the enterprises in pulp and paper industry water consumption quota management method of China in January, 2005 enforcement; Product water withdrawal per ton is also between the 20-70 ton; 1 factory's year water consumption of producing 100000 tons of slurry paper per year also will be ten thousand tons of 200-700, and so huge water resource demand has only China's huge water resource disaster beyond doubt of 2200 tons for water resource per capita.Therefore make full use of various water sources; Existing water resource is carried out rational exploitation and utilization; Solve the demand of enterprises in pulp and paper industry from the source, add the major issue that using water wisely, water circulation use constant pitch sailor section are only the sustainable development of real solution pulping and papermaking industry the water source.
On the other hand, will there be every year a large amount of municipal sewages to efflux after treatment.Along with the continuous reinforcement of urbanization and people's environmental consciousness, sanitary sewage disposal constantly increases, and according to national planning, by 2010, the sanitary sewage disposal rate of China will reach 40%.Mostly present domestic domestic sewage processing method is two stage treatment, and by discharging standards, the COD of sewage primary standard after the processing is 60mg/l, and secondary standard is 120mg/l, and SS content is handled back sewage and clarified basically at 20-30mg/l.But the draining applicable cases is seen outside present municipal sewage plant, and the most basic purposes of draining is field irrigation and ecoscape waters water outside the present domestic sanitary sewage disposal factory, owing to most sewage treatment plants in the suburbs, city; Irrigation receives very big influence; Be used for view waters water,, use also very limited because China's urban planning view water surface area is limited at present; Draining is wasted outside the large amount of sewage factory, can not get good use.
With the outer draining (municipal sewage recycled water) of municipal sewage is that the water source produces fluting medium, and the problem that at first need solve is that recycled water must meet the paper making water requirement.Pulping and paper-making quality of water quality is the quality and the pulping and papermaking processes of influence slurry, paper directly.The factor of water quality impact pulping and paper-making has: the pH value of iron, manganese, silicon plasma content, water, suspended matter, dissolved gas content etc. in turbidity, colourity, hardness, the water.Turbidity, colourity etc. mainly influence paper whiteness and color and luster, and the water that hardness is high can form dirty thing deposition at paper making wet part, and influence is produced; Iron, manganese, silicon plasma content to the brightness reversion of paper, manufacture paper with pulp, ash etc. has certain influence; The PH of water then directly determines the paper making wet part chemical property, and suspended matter can form dust on paper, and the existence of dissolved gas then can form foam and cavity; Influence paper quality; No matter adopt any water source to come pulping and paper-making to take all factors into consideration to above-mentioned factor, eliminate the influence of water quality to product and operating process, just can satisfy the needs of pulping and paper-making.Adopt sanitary sewage disposal factory and office reason back sewage pulping and paper-making must consider that sanitary sewage disposal factory recycled water is used for pulping and paper-making and generally has following problem according to technology and disposition from above-mentioned each side:
1, stink, coloured problem of appearance;
2, the material that contains breeding such as the biological growth that is suitable for algae in the water;
3, because the foundry loam that microorganism forms in the treatment pond can form dust on paper;
4, heavy rain etc. can cause load impact, and part water can not treatedly efflux, and can cause mud to efflux in a large number, influences the pulping and paper-making operation;
5, might contain pathogen etc. in the water system;
6, the soluble gas that produces in the sewage disposal process may impact to pulping and papermaking processes.
How to make full use of this part water source, develop its more more useful industrial purposes and be undoubtedly good outlet of draining outside the sanitary sewage disposal factory.The pulping and paper-making industry is the Chinese national economy important component part, also is that water resource is utilized the rich and influential family, adopts sanitary sewage disposal factory externally discharged waste water, carries out simple process, is used for papermaking then, replenishes the demand of papermaking to water resource, is to achieve many things at one stroke.
Summary of the invention
The present invention is directed to draining outside the municipal sewage plant is the water source; There is serial problem in the production high-strength corrugated base paper process, adopts rational processing method, solve regeneration effluent water product quality, wet end of machine operation, security problems; Use recycled water papermaking, reach the purpose of practicing thrift the water source.
A kind of method of utilizing the municipal sewage recycled water to produce fluting medium comprises the municipal sewage recycled water handled obtaining processed waste water, is that the water source prepares fluting medium with the waste water after handling, and describedly the municipal sewage recycled water is carried out processed steps comprises:
(1) one-level filtration treatment: it is to remove outside the municipal sewage plant bulky grain or block impurity in the draining that one-level is filtered purpose; Comprise plastics (film, sheet, foamed plastic etc.), wood chip, cloth etc.; Avoid these materials to get into treatment system, block pumps, treatment facility etc.Treatment facility adopts rotary drum filter to handle, and the screen specification size is 100～160 orders, preferred 120 orders.
(2) deposition preliminary treatment: adopt flocculation sediment to handle, can regulate the amount of the flocculant of adding according to the content of suspension pollutant (SS) in the water quality in the processing procedure, when SS is less than 50mg/l in the outer draining; Not adding flocculant handles; Only carry out precipitation process, sedimentation basin water outlet SS content is controlled at below the 30mg/l, if water outlet is higher than 30mg/l; Must improve the flocculant consumption, reduce water outlet SS content.
(3) disinfect: draining is all carried out anti-secondary pollution as last and is handled discharging outside the municipal sewage plant; Disinfect here the microorganism that mainly avoids taking out of with outer draining to environment with use the potential danger of bringing; Ozonization is adopted in sterilization, and the ozone consumption is 0.5～10mg/l (is benchmark with wastewater volume pending in this step).
(4) cascade filtration: adopt sand filtration to handle, the quartz sand particle size specification is 3～5mm.
(5) the ventilation stripping is handled: draining has stink beastly sometimes outside the sanitary sewage disposal factory under the bad situation of treatment state.In production and product use, can increase the weight of with temperature rising smell sometimes, give the people unhappy sensation; The mode that employing is ventilated can be with smell stripping in the water body; And can improve the water body dissolved oxygen content, and improve oxidation-reduction potential, improve and copy the paper system potential property.The ventilation stripping handle to adopt aeration mode, and through the stripping that ventilates of aerator at the bottom of the pond, the stripping tank depth is generally 2.5～4 meters, and the stripping time is 0.5～2.0 hour.The stripping time is fixed according to water temperature and water quality.
(6) paper machine making wet end chemistry control: for eliminating the influence of the anionic species that contains in the sanitary sewage recycled water to paper machine operation and product quality; The present invention adopts cationic polyamine anionic species in the recycled water is adjusted and to be neutralized; According to middle water consumption and middle water power lotus density adjustment polyamine consumption; Addition is at 10～80g/ ton water (is benchmark with wastewater quality pending in this step), preferred 10～30g/ ton water.
The present invention adopts that draining is the water source outside the municipal sewage plant, is used for paper after the treated regeneration.Paper industry is the water rich and influential family, and draining is not fully utilized outside a large amount of on the other hand municipal sewages, and draining is not utilized except that be used for greening as landscape water or after deposition and the processing of river course auto purification, irrigate etc. basically outside the municipal sewage plant at present.Caused the very big waste of resource.Make full use of this valuable source,, adopt the external draining of suitable technique suitably to handle, be used for pulp and paper industry, the conserve water resource in conjunction with enterprises in pulp and paper industry water characteristics.Tradition pulping and paper-making water adopts water resources such as underground water, surface water more, and along with the urbanization progress constantly enlarges, draining increases year by year outside the municipal sewage plant, utilizes this resource pulping and paper-making, achieves many things at one stroke undoubtedly.
The inventive method makes full use of regenerated resources, and using water wisely has reached the circulating and recovering purpose.Improved water utilization rate in addition, the expansion municipal sewage plant effluxes water conservancy and uses approach.
Description of drawings
Fig. 1 is the schematic flow sheet of the inventive method.
The specific embodiment
With cotton stalk Biological Pretreatment mechanical pulp and homemade old carton is raw material; Produce A level, B level fluting medium; Adopt the Feng South Area to encircle that draining is the water source outside the emerging sewage treatment plant; Water treatment technological process is seen Fig. 1, and paper-making process adopts prior art, and comprises successively to the processing procedure of outer draining: the filtration of one-level rotary drum Microfilter, flocculation sediment, disinfect, cascade filtration (sand filtration), ventilation stripping and Better Wet-end Control.
The one-level drum filtration adopts 100 mesh filter screens in the specific operation process; Since the outer draining of sewage treatment plant before the arrival treatment system in flume the time of staying about 10 days; Therefore getting into the system suspension thing seldom; Waste water that will be pending when flocculation sediment is handled feeds the regulating reservoir that is provided with the flocculant chemicals dosing plant, prepares against and carries out emergency processing after heavy rain in summer etc. causes water quality deterioration.
Disinfect and adopt feeding ozone to handle, be provided with special-purpose ozone generator, the ozone consumption is 2mg/l (is benchmark with wastewater volume pending in this step).Cascade filtration adopts sand filtration to handle, and the quartz sand particle size specification is 3～5mm, and the ventilation stripping adopts aeration head to ventilate, stripping time 30min, and according to the water quality situation, Better Wet-end Control adds cationic polyamine and carries out the adjusting of wet end charge characteristic.The cationic polyamine addition is 30g/ ton water (is benchmark with wastewater quality pending in this step).
Through handling, adopt the municipal sewage recycled water to carry out papermaking and reached in the close effect of running water, the fluting medium of production can reach national A grade standard, and ton water reuse (treatment disposal cost is merely 0.25 yuan, uses far below charge for water.
Claims (7)
1. method of utilizing the municipal sewage recycled water to produce fluting medium; It is characterized in that: the municipal sewage recycled water is handled obtaining processed waste water; Waste water with after handling is that the water source prepares fluting medium, describedly the municipal sewage recycled water is carried out processed steps comprises:
(1) one-level filtration treatment;
(2) deposition preliminary treatment;
(3) disinfect;
(4) cascade filtration;
(5) the ventilation stripping is handled;
(6) utilize polyamine to carry out wet end chemistry control.
2. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 1 is characterized in that: the one-level filtration treatment adopts 100～160 purpose filter screens in the step (1).
3. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 2 is characterized in that: precipitate preliminary treatment through adding flocculant in the step (2).
4. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 3 is characterized in that: adopt the ozone disinfection in the step (3), the ozone consumption is 0.5～10mg/l.
5. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 4 is characterized in that: adopt the quartzy sand grains of 3～5mm to carry out cascade filtration in the step (4).
6. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 5 is characterized in that: the ventilation stripping time is 0.5～2.0 hour in the step (5).
7. the method for utilizing the municipal sewage recycled water to produce fluting medium as claimed in claim 6 is characterized in that: adopt cationic polyamine to carry out wet end chemistry control in the step (6), the cationic polyamine addition is 10～80g/ ton water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101150093A CN102767109A (en) | 2011-05-05 | 2011-05-05 | Method of using recycled water of urban sewage to produce corrugating medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101150093A CN102767109A (en) | 2011-05-05 | 2011-05-05 | Method of using recycled water of urban sewage to produce corrugating medium |
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| CN102767109A true CN102767109A (en) | 2012-11-07 |
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| CN2011101150093A Pending CN102767109A (en) | 2011-05-05 | 2011-05-05 | Method of using recycled water of urban sewage to produce corrugating medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239438A (en) * | 2015-10-13 | 2016-01-13 | 新疆国力源投资有限公司 | Circulating reuse method for white water in paper machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308026A (en) * | 2000-09-19 | 2001-08-15 | 陈启松 | City domestic water preparing technology |
| JP2007160259A (en) * | 2005-12-15 | 2007-06-28 | Kawamoto Pump Mfg Co Ltd | Water purifying apparatus |
-
2011
- 2011-05-05 CN CN2011101150093A patent/CN102767109A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308026A (en) * | 2000-09-19 | 2001-08-15 | 陈启松 | City domestic water preparing technology |
| JP2007160259A (en) * | 2005-12-15 | 2007-06-28 | Kawamoto Pump Mfg Co Ltd | Water purifying apparatus |
Non-Patent Citations (2)
| Title |
|---|
| 刘廷志，胡惠仁等: "城市污水再生水生产高强瓦楞原纸", 《中国科协第137次青年科学家论坛论文集》, 26 June 2009 (2009-06-26), pages 49 - 54 * |
| 李殿海: "城市再生水回用工艺技术研究", 《硕士学位论文数据库》, 24 November 2010 (2010-11-24), pages 30 - 34 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105239438A (en) * | 2015-10-13 | 2016-01-13 | 新疆国力源投资有限公司 | Circulating reuse method for white water in paper machine |
| CN105239438B (en) * | 2015-10-13 | 2017-07-07 | 新疆国力源投资有限公司 | A kind of paper machine plain boiled water circulation reusing technology |
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Application publication date: 20121107 |