CN104355485B - A kind for the treatment of system of paper waste and method - Google Patents
A kind for the treatment of system of paper waste and method Download PDFInfo
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- CN104355485B CN104355485B CN201410570438.3A CN201410570438A CN104355485B CN 104355485 B CN104355485 B CN 104355485B CN 201410570438 A CN201410570438 A CN 201410570438A CN 104355485 B CN104355485 B CN 104355485B
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- bubble
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- floating method
- waste water
- water
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- 238000000034 method Methods 0.000 title claims abstract description 148
- 239000010893 paper waste Substances 0.000 title claims abstract description 24
- 239000002351 wastewater Substances 0.000 claims abstract description 79
- 238000007667 floating Methods 0.000 claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 18
- 230000003311 flocculating effect Effects 0.000 claims abstract description 18
- 238000011049 filling Methods 0.000 claims abstract description 3
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 238000005189 flocculation Methods 0.000 claims description 12
- 230000016615 flocculation Effects 0.000 claims description 11
- 239000006185 dispersion Substances 0.000 claims description 9
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 238000005188 flotation Methods 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000000701 coagulant Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004065 wastewater treatment Methods 0.000 abstract description 10
- 239000003344 environmental pollutant Substances 0.000 abstract description 3
- 231100000719 pollutant Toxicity 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 238000004537 pulping Methods 0.000 description 6
- 239000013049 sediment Substances 0.000 description 6
- 239000010865 sewage Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 4
- 239000000356 contaminant Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000010808 liquid waste Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000000108 ultra-filtration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The present invention relates to a kind for the treatment of system and method for paper waste, present treatment system, comprise wastewater disposal basin, By Bubble-floating Method treating pond, flocculating settling pond, fabric filter, biodeposition pond and reuse pool, wastewater disposal basin is connected with By Bubble-floating Method treating pond by pumping line, By Bubble-floating Method treating pond is connected by pipeline with flocculating settling pond, the feed-water end in flocculating settling pond is connected with By Bubble-floating Method treating pond, water side is connected with fabric filter, the water outlet of fabric filter is connected to biodeposition pond by pipeline, the water emitted in biodeposition pond by Cemented filling to reuse pool, treatment method comprises By Bubble-floating Method process, flocculence process, fiber filter process and biodeposition process.The present invention applies more rich treatment process in a Waste Water Treatment, and can realize the ideal ground removal effect of each pollutant component of waste water with shorter technical process, different handling principle is combined, and the better effects if removing pollutent is faster.
Description
Technical field
The present invention relates to a kind for the treatment of system and method for paper waste, belong to industrial waste water treatment.
Background technology
Water is Source of life, and global water shortage problem is more and more serious, and water saving is advocated always, as the industrial production industry with water rich and influential family, more should carry out the reduction of discharging of process water, improves the cyclic utilization rate of water, avoids the waste of process water.
Meanwhile, problem of environmental pollution is also on the rise, and boosts environmental awareness, decreasing pollution thing, the discharge of especially industrial sewage or waste water is one of major reason causing environmental pollution, and the discharge how processing industrial sewage or waste water becomes the important measures reducing environmental pollution.
Paper industry is that a polluted source discharges serious industry, and paper-making process needs to use a large amount of water, and a large amount of polluted source is discharged in traditional paper mill, all can produce pollution, produce a large amount of nifves in addition to water quality and soil.Containing the paper-making fibre remained in paper-making process in waste water in the waste water of paper mill discharge, cause loss and the waste of paper-making fibre; Also containing additive for paper making in the waste water in paper mill, most additive for paper making is not volatilizable, can remain in soil or sewage, and discharge can cause the pollution cannot eliminated for a long time in the environment.
The whole production process of pulp and paper industry needs a large amount of water, these water summarize a large amount of industrial objectionable impuritiess in process of production, both cannot directly utilize, direct discharge pollutes the environment again, therefore, recycling is carried out to the waste water that pulping and papermaking processes each stage produces, has significant economy and social value, decide the survival and development of papermaking enterprise.
In paper industry, usually use chemical precipitation, air-flotation process and bio-oxidation etc. prescribing method to sewage or waste water process.
Current papermaking environmental protection coagulation traditional technology is just precipitate or materialization flocculation sediment, flocculation process removal efficiency is high, especially the mailing pollutent of a large amount of polymer difficult degradation can be removed, this lays a good foundation for next step carries out biochemical treatment, but such process is only applicable to the lower waste water of load.European countries are the most advanced on materializing strategy, substantially eliminate horizontal sedimentation tank, adopt milk to rush the advanced precipitation technology such as settling pond, sludge blanket clarifier.
The technology of microbial film ultra-filtration in recent years, reverse osmosis, electrodialysis, ion exchange treatment means constantly occur.In paper industry, on the one hand because processing cost is too high, on the other hand due to the complicated component of paper waste, intractability is large, therefore, does not still have industrialized ripe treatment technology to use so far.
Through retrieval, contriver finds that the patent No. is 2009100012718, patent name is that the patent of invention of the treatment process of paper waste discloses by filtration, UPCB process, biochemical treatment, and the pulping wastewater treatment method of advanced treatment, its inventive point is to have employed UPCB treatment process, achieving the goal is cost with lower waste water, the processing efficiency of waste water is high, and can reach gratifying result.Of the present inventionly do not consider By Bubble-floating Method, a kind of water treatment effect is fine, and the treatment process that cost is not high, and the requirement controling parameters of UPCB treatment process is very complicated, industrial application exists very large very difficultly realize a difficult problem.
It is 2009100012703 that contriver also retrieves one section of patent No., patent name is the patent of invention of the treatment process of paper waste, which disclose and utilize filtration, flocculation sediment, QA2O process, and advanced treatment, the inventive point of this patent is to use QA2O process treatment process to replace conventional biochemical processing method, reach cost-saving, treatment effect is good, the simple beneficial effect of technique.But such technique needs to use a large amount of chemical agents, in residual waste water after treatment, a lot of restricted problem is brought for reusing of waste water.
It is 2009100012690 that contriver also retrieves the patent No., patent name is that the patent of invention of the treatment process of paper waste discloses by filtration, sand setting, flocculation sediment, and the pulping wastewater treatment method of separating and recovering step, its inventive point is before flocculation agent is added into and carries out flocculation sediment in pending middle water, desalting treatment is carried out to the flocculation agent accounting for total consumption 70-90% weight, achieving the goal is paper waste with lower one-tenth present treatment height salt content, and can reach gratifying result.Do not relate to the distillation process of sewage, and day is asked in the recovery of heat of distillation process, in industrial application, narrow and small according to there is Application Areas, the process of the paper waste of relative broad range can not be applicable to.
Summary of the invention
In order to solve above-mentioned Problems existing, the invention discloses a kind for the treatment of system and method for paper waste, the treatment system of this paper waste is rationally and effectively by By Bubble-floating Method treating pond, flocculating settling pond, fabric filter and biodeposition pond are applied in a complete pulping wastewater treatment operation, by this treatment system, pulping wastewater treatment can be obtained the reuse water meeting recycle water standard, by the pulping wastewater treatment method of this process, rationally waste water is allowed to pass through By Bubble-floating Method successively efficiently, flocculence, fiber filter, biodeposition process, each stage removes targetedly respectively or administers the objectionable impurities in waste water, reach the water treatment effect of rationality.
A kind for the treatment of system of paper waste, it is characterized in that comprising wastewater disposal basin, By Bubble-floating Method treating pond, flocculating settling pond, fabric filter, biodeposition pond and reuse pool, described wastewater disposal basin connects the discharge of wastewater pipeline from paper machine room, wastewater disposal basin is connected with By Bubble-floating Method treating pond by pumping line, By Bubble-floating Method treating pond is connected by pipeline with flocculating settling pond, the feed-water end in flocculating settling pond is connected with By Bubble-floating Method treating pond, water side is connected with fabric filter, the water outlet of fabric filter is connected to biodeposition pond by pipeline, the water emitted in biodeposition pond by Cemented filling to reuse pool.
Be provided with air dispersion device bottom described By Bubble-floating Method treating pond, in By Bubble-floating Method treating pond, be provided with filler air-flotation column.
Described fabric filter selects disc type fabric filter.
Whipping appts is provided with in described flocculating settling pond.
A treatment process for paper waste, the treatment system of the paper waste described in the method, is characterized in that comprising following treatment step:
(1), By Bubble-floating Method process, the waste water from paper machine room is carried out By Bubble-floating Method process, obtain one section process waste water;
(2), flocculence process, by one section of step (1) gained process waste water carry out flocculence process, obtain two sections process waste water;
(3), fiber filter process, by two sections of step (2) gained process waste water carry out fiber filter process, obtain three sections process waste water;
(4), biodeposition process, by two sections of step (3) gained process waste water carry out biodeposition process, obtain reuse water.
By Bubble-floating Method process in described step (1) adopts dispersion air By Bubble-floating Method.
In described step (2) flocculence process, first add flocculation agent poly aluminium chloride, after stirring, then add coagulant aids.
The handling principle of paper waste of the present invention is:
1. first the waste water from paper machine room be temporarily stored in wastewater disposal basin, and treating needs in subsequent handling to extract;
2. waste water enters into By Bubble-floating Method treating pond, and be uniformly dispersed bottom By Bubble-floating Method treating pond ground consistent air bubble in waste water, and the solid contaminant in waste water is followed bubble and taken away waste water, expects the effect of purifying liquid waste;
3. still contain SS, COD, BOD etc. by the waste water after By Bubble-floating Method process, by flocculating settling, remove the most of SS in waste water, reduce COD and BOD;
4. isolate the paper-making fibre in waste water through fabric filter, paper-making fibre is recycled, and avoids the waste of paper-making fibre;
5. biodeposition is last one technique of wastewater treatment, and pollutant load is not high, relatively clean waste water, through biodeposition, removes COD, BOD etc. that content is not high, makes water after treatment can reach the standard of reuse water.
Beneficial effect of the present invention:
In a Waste Water Treatment, apply more rich treatment process, can realize the ideal ground removal effect of each pollutant component of waste water with shorter technical process, different handling principle is combined, and the better effects if removing pollutent is faster.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further.Following embodiment should be understood only be not used in for illustration of the present invention and limit the scope of the invention.
The treatment system of a kind of paper waste in the present invention, comprises wastewater disposal basin, By Bubble-floating Method treating pond, flocculating settling pond, fabric filter, biodeposition pond and reuse pool.
Described wastewater disposal basin connects the discharge of wastewater pipeline from paper machine room, the long waste water emitted of commercial paper is held in wastewater disposal basin, be commercial paper waste water deposit pond temporarily, wastewater disposal basin can in the sagging formula pond for scraping out on the ground, also can be the pond of cruelly leaking wholly or in part more than ground, cost of manufacture is simple, the niff come out to prevent waste water affects environment or affects the orthobiosis of people, wastewater disposal basin can be made a lid, reduce or avoid waste water odor dispersion out.
Be provided with air dispersion device bottom By Bubble-floating Method treating pond, in By Bubble-floating Method treating pond, be provided with filler air-flotation column.During use, after piling waste water in By Bubble-floating Method treating pond, after waste water leaves standstill, by the air dispersion device bottom By Bubble-floating Method treating pond towards dispersion air in waste water, form air bubble, air bubble in waste water in uphill process, just in conjunction with the solid matter of waste water, it is taken away out from waste water, thus reaches the effect of purifying treatment.The solid contaminant of filler air-flotation column in bubble uphill process in secondary combined waste water, improves the efficiency removing solid contaminant.
Flocculating settling is provided with whipping appts in pond.Flocculating settling pond is an important procedure of the SS removed in waste water, in flocculating settling pond, whipping appts is set, can by the flocculation agent put in flocculating settling pond and waste water fully, short mix, after mixing, stop stirring, sediment separate out after flocculation sediment.
Fabric filter selects disc type fabric filter.The convenient installation of disc type fabric filter, use technology, be a kind of fabric filter that waste water treatment process is conventional, be used for by the fiber separation in waste water out, avoiding paper-making fibre to run off, that improves paper-making fibre recycles rate.
A treatment process for paper waste, the treatment system of the paper waste described in the method, is characterized in that comprising following treatment step:
(1), By Bubble-floating Method process, the waste water from paper machine room is carried out By Bubble-floating Method process, obtain one section process waste water;
(2), flocculence process, by one section of step (1) gained process waste water carry out flocculence process, obtain two sections process waste water;
(3), fiber filter process, by two sections of step (2) gained process waste water carry out fiber filter process, obtain three sections process waste water;
(4), biodeposition process, by two sections of step (3) gained process waste water carry out biodeposition process, obtain reuse water.
By Bubble-floating Method process in described step (1) adopts dispersion air By Bubble-floating Method.
In described step (2) flocculence process, first add flocculation agent poly aluminium chloride, after stirring, then add coagulant aids.
By the treatment process of this paper waste, good water treatment effect can be reached, and the time cycle of process is short, each step consuming time not long.
Process waste water successively by the treatment process of By Bubble-floating Method, flocculence, fiber filter and biodeposition, the pollutents such as SS, COD, the BOD in waste water can not only be removed quickly and efficiently, reclaim the paper-making fibre in waste water.
Technique means disclosed in the present invention program is not limited only to the technique means disclosed in above-mentioned technique means, also comprises the technical scheme be made up of above technical characteristic arbitrary combination.
With above-mentioned according to desirable embodiment of the present invention for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification sheets, must determine its technical scope according to right.
Claims (2)
1. the treatment system of a paper waste, it is characterized in that comprising wastewater disposal basin, By Bubble-floating Method treating pond, flocculating settling pond, fabric filter, biodeposition pond and reuse pool, described wastewater disposal basin connects the discharge of wastewater pipeline from paper machine room, wastewater disposal basin is connected with By Bubble-floating Method treating pond by pumping line, By Bubble-floating Method treating pond is connected by pipeline with flocculating settling pond, the feed-water end in flocculating settling pond is connected with By Bubble-floating Method treating pond, water side is connected with fabric filter, the water outlet of fabric filter is connected to biodeposition pond by pipeline, the water emitted in biodeposition pond by Cemented filling to reuse pool,
Be provided with air dispersion device bottom described By Bubble-floating Method treating pond, in By Bubble-floating Method treating pond, be provided with filler air-flotation column;
Described fabric filter selects disc type fabric filter;
Whipping appts is provided with in described flocculating settling pond.
2. a treatment process for paper waste, the method applies the treatment system of paper waste as claimed in claim 1, it is characterized in that comprising following treatment step:
(1), By Bubble-floating Method process, the waste water from paper machine room is carried out By Bubble-floating Method process, obtain one section process waste water;
(2), flocculence process, by one section of step (1) gained process waste water carry out flocculence process, obtain two sections process waste water;
(3), fiber filter process, by two sections of step (2) gained process waste water carry out fiber filter process, obtain three sections process waste water;
(4), biodeposition process, by two sections of step (3) gained process waste water carry out biodeposition process, obtain reuse water;
By Bubble-floating Method process in described step (1) adopts dispersion air By Bubble-floating Method;
In described step (2) flocculence process, first add flocculation agent poly aluminium chloride, after stirring, then add coagulant aids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410570438.3A CN104355485B (en) | 2014-10-24 | 2014-10-24 | A kind for the treatment of system of paper waste and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410570438.3A CN104355485B (en) | 2014-10-24 | 2014-10-24 | A kind for the treatment of system of paper waste and method |
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| Publication Number | Publication Date |
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| CN104355485A CN104355485A (en) | 2015-02-18 |
| CN104355485B true CN104355485B (en) | 2016-04-27 |
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| CN106396273A (en) * | 2016-10-28 | 2017-02-15 | 张日龙 | Wastewater recovery treatment process for paper mill |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03119189A (en) * | 1989-10-03 | 1991-05-21 | Nippon Kamiparupu Kenkyusho:Kk | Treatment of white liquor of paper mill |
| CN103626323A (en) * | 2012-08-20 | 2014-03-12 | 杰瑞能源服务有限公司 | Technology and special-purpose device for deep-treatment on pharmacy and papermaking waste water |
| CN103739139A (en) * | 2013-11-15 | 2014-04-23 | 安徽省绿巨人环境技术有限公司 | Corrugated medium pulping wastewater treatment technology |
| CN103964653A (en) * | 2014-05-27 | 2014-08-06 | 浙江华川实业集团有限公司 | Wastewater recovery processing process of paper mill |
-
2014
- 2014-10-24 CN CN201410570438.3A patent/CN104355485B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03119189A (en) * | 1989-10-03 | 1991-05-21 | Nippon Kamiparupu Kenkyusho:Kk | Treatment of white liquor of paper mill |
| CN103626323A (en) * | 2012-08-20 | 2014-03-12 | 杰瑞能源服务有限公司 | Technology and special-purpose device for deep-treatment on pharmacy and papermaking waste water |
| CN103739139A (en) * | 2013-11-15 | 2014-04-23 | 安徽省绿巨人环境技术有限公司 | Corrugated medium pulping wastewater treatment technology |
| CN103964653A (en) * | 2014-05-27 | 2014-08-06 | 浙江华川实业集团有限公司 | Wastewater recovery processing process of paper mill |
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| CN104355485A (en) | 2015-02-18 |
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Effective date of registration: 20160805 Address after: 252600 Longhua street, Linqing, Shandong, No. 124, No. Patentee after: Qi Weimin Address before: Zhongshan road Wuzhong District Mudu town of Suzhou city in Jiangsu province 215100 No. 70 room 3307 Patentee before: Suzhou Fuqinuo Water Treatment Equipment Co., Ltd. |
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Effective date of registration: 20161017 Address after: Zhongshan road Wuzhong District Mudu town of Suzhou city in Jiangsu province 215100 No. 70 room 3307 Patentee after: Suzhou Fuqinuo Water Treatment Equipment Co., Ltd. Address before: 252600 Longhua street, Linqing, Shandong, No. 124, No. Patentee before: Qi Weimin |
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Granted publication date: 20160427 Termination date: 20171024 |