CN204111393U - A kind of papermaking sewage treatment system - Google Patents
A kind of papermaking sewage treatment system Download PDFInfo
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- CN204111393U CN204111393U CN201420555058.8U CN201420555058U CN204111393U CN 204111393 U CN204111393 U CN 204111393U CN 201420555058 U CN201420555058 U CN 201420555058U CN 204111393 U CN204111393 U CN 204111393U
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- 239000010865 sewage Substances 0.000 title claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 238000005345 coagulation Methods 0.000 claims abstract description 59
- 230000015271 coagulation Effects 0.000 claims abstract description 59
- 238000005189 flocculation Methods 0.000 claims abstract description 42
- 230000016615 flocculation Effects 0.000 claims abstract description 42
- 239000002351 wastewater Substances 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- 238000004064 recycling Methods 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 10
- 230000000630 rising effect Effects 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 6
- 239000000706 filtrate Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 28
- 239000000835 fiber Substances 0.000 description 12
- 238000002156 mixing Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 238000004065 wastewater treatment Methods 0.000 description 5
- 101150054854 POU1F1 gene Proteins 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000013327 media filtration Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 241000202567 Fatsia japonica Species 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 fento Substances 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to technical field of water treatment equipment, there is provided a kind of coagulation channel architecture simple, coagulation is even, coagulation effect is good, without the need to the papermaking sewage treatment system of regular spoil disposal, comprise settling pit, coagulation passage, flocculant adding apparatus and pond for recovering, coagulation passage is provided with wastewater influent road and mixed flow water channel, the feed-water end in wastewater influent road is connected with the water outlet of settling pit, water side is communicated with the feed-water end of mixed flow water channel, the water side of mixed flow water channel is as the water side of coagulation passage, the pipeline outer wall in wastewater influent road and the inwall of coagulation passage form flocculation agent and add passage, flocculation agent adds passage and is connected with flocculant adding apparatus, the tube wall in wastewater influent road is provided with and is evenly equipped with the annotation through hole that multiple connection wastewater influent road and flocculation agent add passage, in mixed flow water channel, interval is provided with spreader plate, a point water flow passage is formed between the inwall of spreader plate and mixed flow water channel, and road, interflow can be formed between adjacent spreader plate.
Description
Technical field
The utility model relates to technical field of water treatment equipment, particularly a kind of papermaking sewage treatment system.
Background technology
Along with Chinese Urbanization's, industrialized acceleration, the demand gap of water resources also increases day by day.In this context, sewage treatment industry becomes new industry, at present and tap water is produced, supplied water, draining, Treated sewage reusing industry are in status of equal importance.Wherein, paper-making industry occupies first of the large high water consumption industry of China 5, and its domestic paper plant ton paper water consumption, up to more than 100 cubic metres, is almost 10 times of world average level, therefore, China's paper industry cause pollution of waterhead, environmental pollution and water resource waste phenomenon very serious.At present, paper industry part producer of China is by building waste water treatment project, effectively reach the effect of waste water control, but, these waste water treatment project costs are very high, general producer cannot set up waste water treatment project or maintain the continuation of waste water treatment project, therefore, the mode that a lot of producer still selects sewage directly to discharge, papermaking wastewater cannot reach effective improvement, water pollutions and environmental pollution serious, and the pollutent contained in papermaking wastewater mainly short fiber, fento, mud and impurity etc., the direct discharge of papermaking wastewater also can cause the waste of fibre resources, therefore, how papermaking wastewater is effectively administered, to reduce pollution treatment gross investment to greatest extent, recycled fibre pulp, turning waste into wealth is paper industry technician urgent problem.
China Patent No. is the patent literary composition of 2012204550257, disclose a kind of papermaking sewage treatment system, comprise settling pit, coagulation passage, flocculant adding apparatus, settling tank and water collecting basin, sediment outflow pipe is provided with bottom described settling pit, top is respectively equipped with water-in and water outlet, described settling pit water outlet is connected with settling tank water-in by coagulation passage, described coagulation passage is provided with a plurality of flap be interspersed, described coagulation passage is also provided with the dosing mouth be connected with flocculant adding apparatus, the bottom of described settling tank is coniform, pulp saver is provided with bottom described settling tank, the water outlet of described settling tank is connected with water collecting basin, the bottom of described water collecting basin is provided with water port, the top that described water collecting basin is positioned at water port is provided with filtering layer.During use, papermaking wastewater enters settling pit by the water-in of settling pit, and settling pit first carries out preliminary sedimentation to papermaking wastewater, and complete being separated of papermaking wastewater fiber and sand setting, sand setting is discharged through sediment outflow pipe; Then, the water of settling pit enters into settling tank via coagulation passage again, in coagulation passage, flocculation agent adds in current by flocculant adding apparatus, flap in current and coagulation passage collides mutually, the raising speed and current are repeatedly transferred between flap, and in water, particle collision chance increases, make fully to mix between current with medicament, coagulation effect is good; Water after dosing, coagulation is in settling tank, and rely on gravity fractionation, make the fibre pulp flocculated in water be deposited in bottom settling tank, fibre pulp reclaims by the pulp saver bottom settling tank, effectively achieves the recovery of fibre pulp; The water of settling tank flows in water collecting basin again, and water collecting basin carries out shock absorption to water, and other contaminant filters fall through the filteration of filtering layer by the water of water collecting basin, then is discharged by water port; Therefore, via multiple treatment steps such as sand setting, coagulation, precipitation and filtrations, effectively reach waste water control effect, reach the emission standard of sewage, and effectively achieve the recovery of fibre pulp, described papermaking sewage treatment system one-piece construction is simple, and cost is low, reduces pollution treatment gross investment to greatest extent.But, in the coagulation process of described papermaking sewage treatment system, the flocculation agent that flocculant adding apparatus is carried is that the annotation of single-point mixes in sewage, easily cause partial concn high, flocculation agent skewness, flocculation agent mixes uneven problem with sewage, and utilize the flap be interspersed in coagulation passage to complete married operation, though without the need to using mechanical means, coagulation effect is good, and structure is simple, but coagulation effect is large by water yield variable effect, adjustment leeway is little, easily pile up silt particle etc. between flap simultaneously, all need between each flap to arrange spoil disposal pipeline, to carry out regular spoil disposal operation, troublesome poeration, and improve the labour intensity of staff.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of coagulation channel architecture simple, coagulation effect is good, little by water yield variable effect, regulates leeway large, coagulation passage can not deposition, without the need to arranging spoil disposal pipeline, without the need to regular spoil disposal, the papermaking sewage treatment system of the rate of recovery of fibre pulp in sewage can be improved further simultaneously.
For realizing above-mentioned technical problem, the solution that the utility model is taked is: a kind of papermaking sewage treatment system, and comprise settling pit, coagulation passage, flocculant adding apparatus and pond for recovering, described settling pit is provided with water outlet and sand removing hole, described coagulation passage is provided with wastewater influent road and mixed flow water channel, the described feed-water end in wastewater influent road is connected with the water outlet of settling pit, water side is communicated with the feed-water end of mixed flow water channel, the water side of mixed flow water channel is as the water side of coagulation passage, the pipeline outer wall in described wastewater influent road and the inwall of coagulation passage form flocculation agent and add passage, flocculation agent adds passage and is connected with flocculant adding apparatus, the tube wall in described wastewater influent road is provided with and is evenly equipped with the annotation through hole that multiple connection wastewater influent road and flocculation agent add passage, in described mixed flow water channel, interval is provided with spreader plate, a point water flow passage is formed between the inwall of spreader plate and mixed flow water channel, and road, interflow between adjacent spreader plate, can be formed, the bottom of described pond for recovering is provided with the water inlet pipe be connected with its tangent line, the water side of described coagulation passage is connected with pond for recovering water inlet pipe by pipeline through lift pump, the top of described pond for recovering is provided with rising pipe, bottom is the recycling cavity of taper, between water inlet pipe and recycling cavity, resistance rotating plate is provided with in pond for recovering, the edge of described resistance rotating plate is provided with the shrinkage pool entering recycling cavity for flocs unit, between water inlet pipe and rising pipe, also flocculation flaggy is provided with successively from lower to upper in described pond for recovering, filtrate supporting plate, suspended filter material and filter screen, described flocculation flaggy favours the horizontal plane of pond for recovering.
Further: the angle of inclination of the horizontal plane of described flocculation flaggy and pond for recovering is 60 °.
By adopting preceding solution, the beneficial effects of the utility model are: the papermaking sewage treatment system of design as mentioned above, coagulation passage is provided with wastewater influent road and mixed flow water channel, the pipeline outer wall in wastewater influent road and the inwall of coagulation passage form flocculation agent and add passage, flocculation agent adds passage and is connected with flocculant adding apparatus, the tube wall in wastewater influent road is provided with and is evenly equipped with the annotation through hole that multiple connection wastewater influent road and flocculation agent add passage, then flocculation agent is injected from each point the periphery in wastewater influent road by the annotation through hole on wastewater influent road, traditional single-point is injected the injection being separated into multiple spot, the all directions region of the sewage in wastewater influent road is made all to have identical flocculation agent mixing to add, avoid that the sewage that causes when single-point injects is positioned at that the flocculation concentration of injection phase is higher and other regional concentrations are lower, the problem that regional concentration skewness causes follow-up mixing uneven indirectly, further, in mixed flow water channel, interval is provided with spreader plate, a point water flow passage is formed between the inwall of spreader plate and mixed flow water channel, and road, interflow between adjacent spreader plate, can be formed, the design of spreader plate can improve the probability of collision between mixed flow Middle molecule, promote the abundant coagulation between sewage and flocculation agent, coagulation effect is good, and do not apply to folded plate structure in this coagulation process, current can be unimpeded flowing, under the continuous flowing that current are unimpeded is washed away, silt particle can not be detained and is accumulated in coagulation passage, coagulation passage is without the need to arranging spoil disposal pipeline, without the need to regular spoil disposal, and coagulation effect is little by water yield variable effect, adjustment surplus energy is large, therefore, described papermaking sewage treatment system, not simple utilize the mixing effect of mixed flow water channel to improve coagulation effect, but the improvement of inlet structure is added in conjunction with flocculation agent, just the distributing homogeneity of flocculation agent in sewage is ensured from interpolation point, again in conjunction with the collisional mixing effect of follow-up mixed flow water channel, make the coagulation effect of coagulation passage good.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
Now with specific embodiment, the utility model is further illustrated by reference to the accompanying drawings.
With reference to figure 1, the utility model embodiment discloses, and a kind of papermaking sewage treatment system, comprises settling pit 1, coagulation passage 2, flocculant adding apparatus 3 and pond for recovering 4, and described settling pit 1 is provided with water outlet and sand removing hole, described coagulation passage 2 is provided with wastewater influent road 21 and mixed flow water channel 22, the feed-water end in described wastewater influent road 21 is connected with the water outlet of settling pit 1, water side is communicated with the feed-water end of mixed flow water channel 22, the water side of mixed flow water channel 22 is as the water side of coagulation passage, the pipeline outer wall in described wastewater influent road 21 and the inwall of coagulation passage 2 form flocculation agent and add passage 23, flocculation agent adds passage 23 and is connected with flocculant adding apparatus 3, the tube wall in described wastewater influent road 21 is provided with and is evenly equipped with the annotation through hole 24 that multiple connection wastewater influent road 21 and flocculation agent add passage 23, in described mixed flow water channel 22, interval is provided with spreader plate 25, a point water flow passage is formed between the inwall of spreader plate 25 and mixed flow water channel 22, and road, interflow between adjacent spreader plate 25, can be formed, the bottom of described pond for recovering 4 is provided with the water inlet pipe 41 be connected with its tangent line, the water side of described coagulation passage 2 is connected with pond for recovering 4 water inlet pipe 41 by pipeline through lift pump 5, the top of described pond for recovering 4 is provided with rising pipe 42, bottom is the recycling cavity 43 of taper, be provided with between water inlet pipe 41 and recycling cavity 43 in pond for recovering 4 and hinder rotating plate 44, the edge of described resistance rotating plate 44 is provided with the shrinkage pool 45 entering recycling cavity 43 for flocs unit, between water inlet pipe 41 and rising pipe 42, also the flaggy 46 that flocculates is provided with successively from lower to upper in described pond for recovering 4, filtrate supporting plate 47, suspended filter material 48 and filter screen 49, described flocculation flaggy 46 is 60 ° of pitch angle with the horizontal plane of pond for recovering 4.
When described papermaking sewage treatment system uses, sewage through the preliminary gravity separation precipitation of settling pit 1 enters in the wastewater influent road 21 in coagulation passage 2, now flocculation agent is passed through the annotation mouth 24 on the tube wall in wastewater influent road 21 by flocculant adding apparatus 3, periphery along wastewater influent road 21 injects flocculation agent by all directions in sewage, owing to being the injection injection of traditional single-point being separated into multiple spot, make all directions region of the sewage in wastewater influent road all have identical flocculation agent mixing to add, ensure that the distributing homogeneity of flocculation agent in sewage, then the mixed flow water channel 22 that the mixed flow that sewage mixes with flocculation agent enters in coagulation passage 2 carries out further married operation, in mixed flow water channel 22 mixed flow is constantly done in mixed flow water channel 22 shunting of the spreader plate 25 of spaced design and interflow flow state alternately, improve the probability of collision between each molecule in mixed flow, make between flocculation agent and sewage in conjunction with coagulation more cmpletely, coagulation effect is good, and do not adopt folded plate structure under mixed flow constantly washes away, the deposition of mud is not had in coagulation passage 2 yet, do not need regular to carry out cleaning maintenance service to coagulation passage, reduce cost, improve working efficiency, entering in pond for recovering 4 through the pump function of lift pump 5 with the level of high speed on the direction of pond for recovering 4 tangent line through well-mixed mixed flow, rotating fluid is produced in pond for recovering 4, at compression double electric layer, absorption charge neutrality, adsorption bridging, under precipitation and net such as to catch at the coagulating mechanism, flocs unit becomes large fast, complete flocculation reaction and tiny flocculation granulation, and the flocs unit of growing up can get rid of on the pool wall of pond for recovering 4 under the centrifugal effect of eddy flow, and utilize self gravitation to glide along pool wall, shrinkage pool 45 on resistance rotating plate 44 enters in recycling cavity 43, and to hinder shrinkage pool 45 that rotating plate 44 enters recycling cavity for flocs unit are the edges being arranged at plate, resistance rotating plate 44 prevents the rotation of rotating fluid to be again involved in eddy flow by the flocs unit of recycling cavity 43 on the position of central shaft, effectively isolate the flocs unit of eddy flow and recovery, improve organic efficiency, further, eddy flow can drive current to run rising formation upwelling, the particulate flocculating into large flocs unit is not obtained completely in eddy flow, along with rising flows to Flocculent plate layer 46 place, under particulate is subject to the interaction of eddy flow upwelling and Flocculent plate, be collided, rubbing effect, make particulate form macrobead finally to drop down onto in recycling cavity, final upwelling is come suspended filter material layer and is carried out finally filtering exporting from water outlet again, in suspended filter material layer, suspended filter material 48 is subject to the effect of eddy flow and upwelling, suspended filter material 48 produces and perturbs motion between filtrate supporting plate 47 and filter screen 49, mutual frictional impact between suspended filter material molecule, filtrate not easily hardens, there is self-stip ability, impurity particle in current is by suspended filter material surface adsorption, can come off along with the rubbing effect between suspended filter material 48 when being stacked into a certain degree, separate under eddy flow centrifugation, in the combination acted on through so many layer throwing out, cyclonic separation and media filtration etc., good sewage processing effect, flocs units in recycling cavity etc. finally can carry out recycling by retrieving arrangement and utilize, effectively achieve the recovery of fibre pulp, save resource, the fibre pulp flco solving traditional intermediate processing existence reclaims complete not, the problem of the wasting of resources caused and waste water control weak effect.
The papermaking sewage treatment system designed in sum, not simple utilize the mixing effect of mixed flow water channel to improve coagulation effect, but the improvement of inlet structure is added in conjunction with flocculation agent, just the distributing homogeneity of flocculation agent in sewage is ensured from interpolation point, again in conjunction with the collisional mixing effect of follow-up mixed flow water channel, make the coagulation effect of coagulation passage good, and effective combination of the effect such as throwing out, cyclonic separation and media filtration, effectively achieve the recovery of fibre pulp, improve wastewater treatment efficiency.
Above, be only the embodiment utilizing this origination techniques content, the modification that any those skilled in the art use this creation to do, change, all belong to the scope of the claims that this creation is advocated, and be not limited to those disclosed embodiments.
Claims (2)
1. a papermaking sewage treatment system, is characterized in that: comprise settling pit, coagulation passage, flocculant adding apparatus and pond for recovering, described settling pit is provided with water outlet and sand removing hole, described coagulation passage is provided with wastewater influent road and mixed flow water channel, the described feed-water end in wastewater influent road is connected with the water outlet of settling pit, water side is communicated with the feed-water end of mixed flow water channel, the water side of mixed flow water channel is as the water side of coagulation passage, the pipeline outer wall in described wastewater influent road and the inwall of coagulation passage form flocculation agent and add passage, flocculation agent adds passage and is connected with flocculant adding apparatus, the tube wall in described wastewater influent road is provided with and is evenly equipped with the annotation through hole that multiple connection wastewater influent road and flocculation agent add passage, in described mixed flow water channel, interval is provided with spreader plate, a point water flow passage is formed between the inwall of spreader plate and mixed flow water channel, and road, interflow between adjacent spreader plate, can be formed, the bottom of described pond for recovering is provided with the water inlet pipe be connected with its tangent line, the water side of described coagulation passage is connected with pond for recovering water inlet pipe by pipeline through lift pump, the top of described pond for recovering is provided with rising pipe, bottom is the recycling cavity of taper, between water inlet pipe and recycling cavity, resistance rotating plate is provided with in pond for recovering, the edge of described resistance rotating plate is provided with the shrinkage pool entering recycling cavity for flocs unit, between water inlet pipe and rising pipe, also flocculation flaggy is provided with successively from lower to upper in described pond for recovering, filtrate supporting plate, suspended filter material and filter screen, described flocculation flaggy favours the horizontal plane of pond for recovering.
2. papermaking sewage treatment system according to claim 1, is characterized in that: the angle of inclination of the horizontal plane of described flocculation flaggy and pond for recovering is 60 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555058.8U CN204111393U (en) | 2014-09-25 | 2014-09-25 | A kind of papermaking sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420555058.8U CN204111393U (en) | 2014-09-25 | 2014-09-25 | A kind of papermaking sewage treatment system |
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| CN204111393U true CN204111393U (en) | 2015-01-21 |
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| CN201420555058.8U Expired - Fee Related CN204111393U (en) | 2014-09-25 | 2014-09-25 | A kind of papermaking sewage treatment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186484A (en) * | 2016-06-30 | 2016-12-07 | 庄心生 | A kind of liquid processing system and method |
| CN108708209A (en) * | 2018-08-03 | 2018-10-26 | 联盛纸业（龙海）有限公司 | A kind of paper fiber desanding retracting device |
| CN108911242A (en) * | 2018-07-23 | 2018-11-30 | 广东上智环保科技有限公司 | A kind of super nano bubble circulation ozone sewage water treatment method and device |
-
2014
- 2014-09-25 CN CN201420555058.8U patent/CN204111393U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106186484A (en) * | 2016-06-30 | 2016-12-07 | 庄心生 | A kind of liquid processing system and method |
| CN108911242A (en) * | 2018-07-23 | 2018-11-30 | 广东上智环保科技有限公司 | A kind of super nano bubble circulation ozone sewage water treatment method and device |
| CN108911242B (en) * | 2018-07-23 | 2024-06-14 | 广州德百顺蓝钻科技有限公司 | Super nano bubble circulating ozone sewage treatment method and device |
| CN108708209A (en) * | 2018-08-03 | 2018-10-26 | 联盛纸业（龙海）有限公司 | A kind of paper fiber desanding retracting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Pingyuan Inventor before: Zhuang Bingmei |
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| COR | Change of bibliographic data | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160107 Address after: 710065, No. 12, floor 3, pine house, No. two, 36, electronic drive road, Yanta District, Shaanxi, Xi'an Patentee after: XI'AN KING'S LUCK ENVIRONMENTAL PROTECTION EQUIPMENT CO., LTD. Address before: The hillside village of Quangang District of Quanzhou City, Fujian Province, No. 72 Tian 362800 Patentee before: Zhuang Bingmei |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 Termination date: 20180925 |