CN202558739U - Rural life wastewater resource processing device - Google Patents

Rural life wastewater resource processing device Download PDF

Info

Publication number
CN202558739U
CN202558739U CN2012202045446U CN201220204544U CN202558739U CN 202558739 U CN202558739 U CN 202558739U CN 2012202045446 U CN2012202045446 U CN 2012202045446U CN 201220204544 U CN201220204544 U CN 201220204544U CN 202558739 U CN202558739 U CN 202558739U
Authority
CN
China
Prior art keywords
gas
anaerobic pond
biological filter
buried
buried anaerobic
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.)
Withdrawn - After Issue
Application number
CN2012202045446U
Other languages
Chinese (zh)
Inventor
严小飞
李轶
陈云霄
解东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hohai University HHU
Original Assignee
Hohai University HHU
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hohai University HHU filed Critical Hohai University HHU
Priority to CN2012202045446U priority Critical patent/CN202558739U/en
Application granted granted Critical
Publication of CN202558739U publication Critical patent/CN202558739U/en
Anticipated expiration legal-status Critical
Withdrawn - After Issue legal-status Critical Current

Links

Abstract

The utility model discloses a rural life wastewater resource processing device, which comprises a biogas digester, a grille pretreatment unit, a buried anaerobic pool, an aerobic biological filter tower and a subsurface flow constructed wetland, wherein the biogas digester (1) and a gas storage tank (2), the gas storage tank (2) and an air pressure adjuster (3), and the air pressure adjuster (3) and a gas recycle pump (4) are connected through gas pipelines, the grille pretreatment unit (6) and the buried anaerobic pool (7), the buried anaerobic pool (7) and a tower type bacteria filter (8) and the tower type bacteria filter (8) and the subsurface flow constructed wetland (9) are connected through sewage pipelines (13), a water inlet pipe (14) is arranged on the front end of the grille pretreatment unit (6), and an aerating device (15) is arranged on the bottom portion in the buried anaerobic pool (7). The rural life wastewater resource processing device can effectively remove organisms and efficiently removes nitrogen and phosphorus, is small in floor area and low in operation cost, adjusts measures to local conditions, and achieves waste resource utilization.

Description

A kind of domestic sewage in rural areas by using processing equipment for recycling
Technical field
The utility model relates to field of environment engineering, especially relates to a kind of domestic sewage in rural areas by using processing equipment for recycling.
Background technology
In recent years, along with the rapid raising of China's development of countryside and rural area living standards of the people, the quantity discharged of domestic sewage in rural areas by using constantly increases, and domestic sewage in rural areas by using has become the another severe contamination source that is only second to municipal effluent.Meanwhile, because the rural area source of pollution disperse and be wide, sewage quantity is few; And limited by natural condition; Domestic sewage in rural areas by using has dispersion, characteristics such as easily collecting not, lays comparatively difficulty of sewage collecting pipe network on a large scale, makes domestic sewage in rural areas by using can not include the large-scale centralized Sewage Plant in and concentrates and handle; The harmless treatment rate of domestic sewage in rural areas by using is very low, can only seek the sewage water treatment method and the technology that comparatively are fit to of high-level efficiency less energy-consumption with suiting measures to local conditions.
Domestic sewage in rural areas by using is handled technology commonly used and is mainly contained biochemical treatment system (anaerobism, anoxic, aerobic) and ecological treatment system at present, is main with unpowered anaerobic biological treatment, soil processing, artificial wetland process mainly.This serial of methods exists drawbacks such as the removal effect of nitrogen phosphorus in poor processing effect in long, winter residence time, the waste water is not good.Exist the running cost height such as simple biochemical treatment system, be difficult to adapt to the Rural areas economic situation, and the Ecological Disposal technology also exists the situation of seasonal poor processing effect such as winter.Therefore, existing domestic sewage in rural areas by using treatment technology is not enough, nitrogen phosphorus discharges too much is the direct inducement that causes present domestic sewage in rural areas by using eutrophication to be on the rise.
In order to adapt to the characteristics of Rural areas; The developing direction that domestic sewage in rural areas by using is handled is the reinforced anaerobic biochemical treatment system; Or adopt aeration aerating and modes such as sewage lifting, mixed-liquor return combine; Make full use of ecological treatment system simultaneously, with abundant reduction running cost and reduce the maintenance management difficulty.Simultaneously, current research shows: under anaerobic, methane carries out the nitrate salt denitrogenation as carbon source and sulfate reduction is feasible, and can keep higher denitrification percent.
Summary of the invention
The purpose of the utility model is to overcome existing deficiency, solves the domestic sewage in rural areas by using poor processing effect, and the problem that working cost is high provides a kind of efficient low-consume, and pollution treatment efficient is high, the domestic sewage in rural areas by using processing equipment for recycling that environmental benefit is good.
The utility model adopts the scheme of following technology for realizing above-mentioned purpose:
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit, gas-holder, air pressure regulator, gas recycle pump, gas pipeline, grid processing unit, buried anaerobic pond, tower biological filter, drowned flow artificial wet land, lift pump, under meter, reflux pump, sewer line, water inlet pipe, aerating apparatus, biologic packing material, wetland plant, rising pipe; Between said methane-generating pit and the gas-holder, between gas-holder and the air pressure regulator, all be connected between air pressure regulator and the gas recycle pump through gas pipeline; Between said grid processing unit and the buried anaerobic pond, between buried anaerobic pond and the tower biological filter, all connect between tower biological filter and the drowned flow artificial wet land through sewer line; Said water inlet pipe is located at the front end of grid processing unit; Said aerating apparatus is located at the bottom in the buried anaerobic pond, and aerating apparatus is connected with gas recycle pump through gas pipeline; Gas pipeline between said air pressure regulator and the gas recycle pump is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond; Said lift pump is located on the sewer line between buried anaerobic pond and the tower biological filter; Said under meter is located on the sewer line between tower biological filter and the drowned flow artificial wet land; Sewer line between tower biological filter and the under meter is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond, and reflux pump is located on the branch sewer; Said wetland plant is located on the drowned flow artificial wet land, and said rising pipe is located at the tail end of drowned flow artificial wet land.
Buried anaerobic pond is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder originates from methane-generating pit, and the rural area often has methane-generating pit, can a part of methane that produce be stored in the gas tank, passes through the air pressure regulator dominant discharge when to be used;
The gas of aerating apparatus aeration is methane.Buried anaerobic pond utilizes aerating apparatus, gas recycle pump and gas pipeline to carry out aeration through the mode of circulation methane.
Hydraulic detention time is 20 ~ 30 hours in the buried anaerobic pond, and its seed sludge is from local sewage work anaerobic activated sludge.
The grid processing unit is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is the 40-60 degree, and the grizzly bar gap is the 20-40 millimeter.
Biologic packing material in the said tower biological filter is the micropore biofilter material; For sewage being come in contact and with the micropore biofilter material with the given pace micropore biofilter material of flowing through; Keep decontamination effect improving simultaneously, tap density is 600 ~ 1200g/cm3, and the particle diameter of micropore biofilter material is 25 ~ 40 millimeters.
Compared with prior art, the utlity model has following beneficial effect:
1, this device is provided with methane-generating pit, grid pretreatment unit, buried anaerobic pond, aerobe filter tower, drowned flow artificial wet land, can efficiently remove organism and phosphorus and nitrogen in the domestic sewage in rural areas by using.
2, grid processing unit and buried anaerobic pond adopt underground type, help Winter protection, alleviate the influence of temperature.
3, the methane of methane-generating pit generation under anaerobic can carry out denitrification and sulfate reduction, utilizes methane as the biochemical treatment of carbon source reinforced anaerobic, and keeps higher denitrification percent, suits measures to local conditions, and realizes the changing waste into resources utilization.
4, because methane has the effect of heating, can improve the processing efficiency of buried anaerobic pond and tower biological filter simultaneously, effect is remarkable.
5, the utility model is provided with filter back mixed-liquor return, can effectively improve the clearance of COD, ammonia nitrogen and total nitrogen, guarantees effluent quality and system stable operation.
6, this device adopts robotization control, and convenient operation and management is easy to safeguard, only needs to arrange the special messenger regularly the foreign material in grid exit to be cleared up, and regularly water pump, system etc. is checked and is safeguarded.
Description of drawings
Fig. 1 is the structural representation of the utility model domestic sewage in rural areas by using processing equipment for recycling.
Among the figure: 1 is that methane-generating pit, 2 is that gas-holder, 3 is that air pressure regulator, 4 is that gas recycle pump, 5 is that gas pipeline, 6 is that grid processing unit, 7 is that buried anaerobic pond, 8 is that tower biological filter, 9 is that drowned flow artificial wet land, 10 is that lift pump, 11 is that under meter, 12 is that reflux pump, 13 is that sewer line, 14 is that water inlet pipe, 15 is that aerating apparatus, 16 is that biologic packing material, 17 is that wetland plant, 18 is a rising pipe.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed description.
Embodiment 1
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit 1, gas-holder 2, air pressure regulator 3, gas recycle pump 4, gas pipeline 5, grid processing unit 6, buried anaerobic pond 7, tower biological filter 8, drowned flow artificial wet land 9, lift pump 10, under meter 11, reflux pump 12, sewer line 13, water inlet pipe 14, aerating apparatus 15, biologic packing material 16, wetland plant 17, rising pipe 18; Between methane-generating pit 1 and the gas-holder 2, between gas-holder 2 and the air pressure regulator 3, all be connected between air pressure regulator 3 and the gas recycle pump 4 through gas pipeline; Between grid processing unit 6 and the buried anaerobic pond 7, between buried anaerobic pond 7 and the tower biological filter 8, all connect between tower biological filter 8 and the drowned flow artificial wet land 9 through sewer line 13; Water inlet pipe 14 is located at the front end of grid processing unit 6; Aerating apparatus 15 is located at the bottom in the buried anaerobic pond 7, and aerating apparatus 15 is connected with gas recycle pump 4 through gas pipeline; Gas pipeline between air pressure regulator 3 and the gas recycle pump 4 is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond 7; Lift pump 10 is located on the sewer line between buried anaerobic pond 7 and the tower biological filter 8; Under meter 11 is located on the sewer line between tower biological filter 8 and the drowned flow artificial wet land 9; Sewer line between tower biological filter 8 and the under meter 11 is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond 7, and reflux pump 12 is located on the branch sewer; Wetland plant 17 is located on the drowned flow artificial wet land 9, and rising pipe 18 is located at the tail end of drowned flow artificial wet land 9.
Buried anaerobic pond 7 is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder 2 originates from methane-generating pit 1, and through air pressure regulator 3 dominant discharge;
The gas of aerating apparatus 15 aerations is methane.Buried anaerobic pond 7 utilizes aerating apparatus 15, gas recycle pump 4 and gas pipeline 5 to carry out aeration through the mode of circulation methane.
Hydraulic detention time is 20 ~ 30 hours in the buried anaerobic pond 7, and its seed sludge is from local sewage work anaerobic activated sludge.
Grid processing unit 6 is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is the 40-60 degree, and the grizzly bar gap is the 20-40 millimeter.
Biologic packing material 16 in the tower biological filter 8 is the micropore biofilter material, and tap density is 600 ~ 1200g/cm3, and the particle diameter of micropore biofilter material is 25 ~ 40 millimeters.
Embodiment 2
A kind of domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit 1, gas-holder 2, air pressure regulator 3, gas recycle pump 4, gas pipeline 5, grid processing unit 6, buried anaerobic pond 7, tower biological filter 8, drowned flow artificial wet land 9, lift pump 10, under meter 11, reflux pump 12, sewer line 13, water inlet pipe 14, aerating apparatus 15, biologic packing material 16, wetland plant 17, rising pipe 18; Between methane-generating pit 1 and the gas-holder 2, between gas-holder 2 and the air pressure regulator 3, all be connected between air pressure regulator 3 and the gas recycle pump 4 through gas pipeline; Between grid processing unit 6 and the buried anaerobic pond 7, between buried anaerobic pond 7 and the tower biological filter 8, all connect between tower biological filter 8 and the drowned flow artificial wet land 9 through sewer line 13; The front end of grid processing unit 6 is provided with water inlet pipe 14; Aerating apparatus 15 is located at the bottom in the buried anaerobic pond 7; And aerating apparatus 15 is connected with gas recycle pump 4 through gas pipeline; Gas pipeline between air pressure regulator 3 and the gas recycle pump 4 is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond 7; Lift pump 10 is located on the sewer line between buried anaerobic pond 7 and the tower biological filter 8; Sewer line between tower biological filter 8 and the drowned flow artificial wet land 9 is provided with under meter 11; Sewer line between tower biological filter 8 and the under meter 11 is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond 7, and branch sewer is provided with reflux pump 12; Wetland plant 17 is located on the drowned flow artificial wet land 9, and the tail end of drowned flow artificial wet land 9 is provided with rising pipe 18.
Buried anaerobic pond 7 is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
Methane in the gas-holder 2 originates from methane-generating pit 1, and through air pressure regulator 3 dominant discharge;
Buried anaerobic pond 7 utilizes aerating apparatus 15, gas recycle pump 4 and gas pipeline 5 to carry out aeration through the mode of circulation methane, and hydraulic detention time is 24 hours, and its seed sludge is from local sewage work anaerobic activated sludge.
Grid processing unit 6 is a underground type, and fine fack is installed in its water inlet place, and the fine fack angle of inclination is 60 degree, and the grizzly bar gap is 40 millimeters.
Biologic packing material 16 in the tower biological filter 8 is the micropore biofilter material, and tap density is 1000g/cm 3, the particle diameter of micropore biofilter material is 40 millimeters.
Domestic sewage in rural areas by using is handled and is adopted this device.During real work, when domestic sewage in rural areas by using water inlet CODcr concentration is 350mg/L, NH 3-N concentration is 32mg/L, and TN concentration is 59mg/L, when TP concentration is 3mg/L; Treatment sewage is from water inlet pipe (14) entering, through getting into buried anaerobic pond (7) after the pre-treatment of grid processing unit (6), organism in decomposition and the removal water under the anerobes effect; Utilize methane to carry out denitrification and sulfate reduction for carbon source simultaneously, carry out aeration through the mode of circulation methane, the aeration rate of methane is 2L/h; Stop after 24 hours, get into tower biological filter (8) through lift pump (10) sewage and further remove organism and nitrogen phosphorus, water is back to buried anaerobic pond (7) through reflux pump (12) after the filter of tower biological filter (8); Reflux ratio is 100%, and the treatment sewage removal efficiency of nitrogen and phosphorus is higher, when water outlet is comparatively limpid, stop backflow; Let the water outlet of tower biological filter (8) get into further dephosphorization of drowned flow artificial wet land (9); Simultaneously nitrogen is had certain removal, wetland plant (17) is a Canna generalis Bailey, and drowned flow artificial wet land (9) adopts pebbles and blast-furnace slag to fill; Sewage is finally flowed out by the rising pipe (18) of drowned flow artificial wet land (9) tail end; Through this apparatus processes water outlet CODcr concentration later is 33mg/L, and clearance is 90.6%, NH 3-N concentration is 4mg/L, and clearance is 87.5%, and TN concentration is 9mg/L, and clearance is 84.7%, and TP concentration is 0.6mg/L, and clearance is 80.0%, the treat effluent qualified discharge.

Claims (6)

1. a domestic sewage in rural areas by using processing equipment for recycling comprises methane-generating pit (1), gas-holder (2), air pressure regulator (3), gas recycle pump (4), gas pipeline (5), grid processing unit (6), buried anaerobic pond (7), tower biological filter (8), drowned flow artificial wet land (9), lift pump (10), under meter (11), reflux pump (12), sewer line (13), water inlet pipe (14), aerating apparatus (15), biologic packing material (16), wetland plant (17), rising pipe (18); It is characterized in that: between said methane-generating pit (1) and the gas-holder (2), between gas-holder (2) and the air pressure regulator (3), all be connected between air pressure regulator (3) and the gas recycle pump (4) through gas pipeline; Between said grid processing unit (6) and the buried anaerobic pond (7), between buried anaerobic pond (7) and tower biological filter (8), all connect between tower biological filter (8) and the drowned flow artificial wet land (9) through sewer line (13); Said water inlet pipe (14) is located at the front end of grid processing unit (6); Said aerating apparatus (15) is located at the bottom in the buried anaerobic pond (7), and aerating apparatus (15) is connected with gas recycle pump (4) through gas pipeline; Gas pipeline between said air pressure regulator (3) and the gas recycle pump (4) is provided with gas service pipe, and this gas service pipe links to each other with buried anaerobic pond (7); Said lift pump (10) is located on the sewer line between buried anaerobic pond (7) and tower biological filter (8); Said under meter (11) is located on the sewer line between tower biological filter (8) and the drowned flow artificial wet land (9); Sewer line between tower biological filter (8) and the under meter (11) is provided with branch sewer, and this branch sewer links to each other with the bottom of buried anaerobic pond (7), and reflux pump (12) is located on the branch sewer; Said wetland plant (17) is located on the drowned flow artificial wet land (9), and said rising pipe (18) is located at the tail end of drowned flow artificial wet land (9).
2. according to claims 1 described a kind of domestic sewage in rural areas by using processing equipment for recycling, it is characterized in that: said buried anaerobic pond (7) is full underground type, adopts brick or concrete structure, and is provided with the manhole that is used to clear up.
3. according to claims 1 described a kind of domestic sewage in rural areas by using processing equipment for recycling, it is characterized in that: the gas of said aerating apparatus (15) aeration is methane.
4. according to claims 1 described a kind of domestic sewage in rural areas by using processing equipment for recycling, it is characterized in that: seed sludge is from local sewage work anaerobic activated sludge in the said buried anaerobic pond (7).
5. according to claims 1 described a kind of domestic sewage in rural areas by using processing equipment for recycling; It is characterized in that: said grid processing unit (6) is a underground type; Fine fack is installed in its water inlet place, and the fine fack angle of inclination is the 40-60 degree, and the grizzly bar gap is the 20-40 millimeter.
6. according to claims 1 described a kind of domestic sewage in rural areas by using processing equipment for recycling; It is characterized in that: the biologic packing material (16) in said tower biological filter (8) is the micropore biofilter material; Tap density is 600 ~ 1200g/cm3, and the particle diameter of micropore biofilter material is 25 ~ 40 millimeters.
CN2012202045446U 2012-05-09 2012-05-09 Rural life wastewater resource processing device Withdrawn - After Issue CN202558739U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012202045446U CN202558739U (en) 2012-05-09 2012-05-09 Rural life wastewater resource processing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012202045446U CN202558739U (en) 2012-05-09 2012-05-09 Rural life wastewater resource processing device

Publications (1)

Publication Number Publication Date
CN202558739U true CN202558739U (en) 2012-11-28

Family

ID=47208416

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012202045446U Withdrawn - After Issue CN202558739U (en) 2012-05-09 2012-05-09 Rural life wastewater resource processing device

Country Status (1)

Country Link
CN (1) CN202558739U (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701448A (en) * 2012-05-09 2012-10-03 河海大学 Rural domestic sewage reutilization treatment device
CN103253823A (en) * 2013-05-02 2013-08-21 中国农业大学 Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland
CN104529088A (en) * 2015-01-05 2015-04-22 李华 Sectional type integration rural sewage processing device without power consumption
CN108996827A (en) * 2018-08-10 2018-12-14 武汉理工大学 A kind of sewage plant Tailwater Depth nitrogen rejection facility based on methane oxidation
CN110590055A (en) * 2019-07-29 2019-12-20 岭南水务集团有限公司 Rural sewage treatment system
WO2020000214A1 (en) * 2018-06-26 2020-01-02 江苏宏大环保科技有限公司 Wastewater recycling treatment apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102701448A (en) * 2012-05-09 2012-10-03 河海大学 Rural domestic sewage reutilization treatment device
CN103253823A (en) * 2013-05-02 2013-08-21 中国农业大学 Method and system for realizing efficient wastewater treatment and waste methane gas oxidation together via artificial wetland
CN104529088A (en) * 2015-01-05 2015-04-22 李华 Sectional type integration rural sewage processing device without power consumption
WO2020000214A1 (en) * 2018-06-26 2020-01-02 江苏宏大环保科技有限公司 Wastewater recycling treatment apparatus
CN108996827A (en) * 2018-08-10 2018-12-14 武汉理工大学 A kind of sewage plant Tailwater Depth nitrogen rejection facility based on methane oxidation
CN108996827B (en) * 2018-08-10 2021-06-08 武汉理工大学 Sewage plant tail water deep denitrification device based on methane oxidation
CN110590055A (en) * 2019-07-29 2019-12-20 岭南水务集团有限公司 Rural sewage treatment system

Similar Documents

Publication Publication Date Title
CN102701448B (en) Rural domestic sewage reutilization treatment device
CN202558739U (en) Rural life wastewater resource processing device
CN103395937B (en) Processing device and processing method applicable to high-ammonia-nitrogen agricultural wastewater
CN102249496B (en) Method for advanced treatment of sewage and artificial wetland structure
CN103159383A (en) Rural domestic sewage biological treatment system
CN102260021A (en) Process and device for deep denitrogenation of domestic wastewater without additional carbon source
CN101817615A (en) Anaerobic-sequencing batch biofilm reactor-artificial wetland method for treating piggery wastewater
CN102718326B (en) Water eco-purification system and purification method thereof
CN105036467A (en) Artificial wetland waste water pretreatment method for small-town waste water treatment
CN102336500B (en) Rural domestic sewage treatment system suitable for northern part of China and technology thereof
CN103936234B (en) A kind of domestic sewage processing system and treatment process thereof utilizing sun power
CN103232143B (en) Ecological combined device for treating ammonia-nitrogen sewage
CN202744423U (en) Integrated bio-contact oxidation device for treating rural domestic sewage
CN208250123U (en) A kind of efficient domestic sewage in rural areas integrated treatment unit
CN206266394U (en) Integrated scattered domestic sewage treatment device
CN103332788B (en) Multi-stage anaerobic-aerobic combined nitrogen and phosphorus removing device and method for rural domestic sewage
WO2020000214A1 (en) Wastewater recycling treatment apparatus
CN202658053U (en) Buried sewage treatment device
CN210085200U (en) Solar energy integration sewage treatment device
CN210796140U (en) Domestic sewage treatment device
CN203781915U (en) Nitrification and denitrification integrated rural domestic sewage treatment system
CN201224703Y (en) Unpowered efficient dispersing domestic sewage treatment complete equipment
CN103241906B (en) Sewage treatment method and device for reusing reclaimed water as landscape water
CN203582658U (en) Multi-stage aeration reclaimed water treatment system for medium and small towns
CN104030524A (en) Seasonal aeration domestic sewage deep denitrification process and device

Legal Events

Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
AV01 Patent right actively abandoned

Granted publication date: 20121128

Effective date of abandoning: 20130703

RGAV Abandon patent right to avoid regrant