CN105731737A - Urban river comprehensive treatment method - Google Patents
Urban river comprehensive treatment method Download PDFInfo
- Publication number
- CN105731737A CN105731737A CN201610276271.9A CN201610276271A CN105731737A CN 105731737 A CN105731737 A CN 105731737A CN 201610276271 A CN201610276271 A CN 201610276271A CN 105731737 A CN105731737 A CN 105731737A
- Authority
- CN
- China
- Prior art keywords
- retaining wall
- water
- water retaining
- river
- outlet hole
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 78
- 239000010865 sewage Substances 0.000 claims abstract description 10
- 230000007423 decrease Effects 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 230000001580 bacterial effect Effects 0.000 claims description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 235000014655 lactic acid Nutrition 0.000 claims description 2
- 239000004310 lactic acid Substances 0.000 claims description 2
- 238000007726 management method Methods 0.000 claims description 2
- 230000001546 nitrifying effect Effects 0.000 claims description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 claims 1
- 230000000813 microbial effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005273 aeration Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 241000235070 Saccharomyces Species 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003911 water pollution 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
一种城市河道综合治理方法，根据进水量距河道进污口1?10米处设有挡水墙体一，所述挡水墙体一上设有平台，平台上依次设有1?3层过滤网，所述过滤网的密度依次减小，挡水墙体一上开有出水孔一，出水孔一连接出水管，离挡水墙体一的下游100?1000米处设有挡水墙体二。本发明的技术效果是：其结构原理简单，便于实现，采用物理方法和治污植物的方法即可很好实现对城市河道的综合治理，不需要添加其他化学制剂和生物反应，对水体不会造成二次污染，其操作过程只需普通环卫工人即可操作实现，对人员素质要求低，同时对周边环境没有影响。
A method for comprehensive treatment of urban rivers. According to the amount of water inflow, a water retaining wall is provided at a distance of 1 to 10 meters from the sewage inlet of the river. The first water retaining wall is provided with a platform, and 1 to 3 layers are arranged on the platform in turn. Filter screen, the density of the filter screen decreases in turn, there is a water outlet hole 1 on the water retaining wall body, the water outlet hole 1 is connected to the water outlet pipe, and a water retaining wall is provided at a place 100 to 1000 meters downstream from the water retaining wall body 1 body two. The technical effect of the present invention is: its structure principle is simple, easy to realize, and the comprehensive treatment of urban rivers can be well realized by adopting the method of physical method and pollution control plant, without adding other chemical preparations and biological reactions, and will not affect the water body Cause secondary pollution, the operation process can be realized only by ordinary sanitation workers, which has low requirements on the quality of personnel and has no impact on the surrounding environment.
Description
技术领域 technical field
本发明涉及一种河道治理方法，尤其涉及一种城市河道综合治理方法。 The invention relates to a method for river course management, in particular to a comprehensive urban river course treatment method.
背景技术 Background technique
城市河道大都由生活污水和雨水组成，河道富营养化，淤泥沉积，导致河道污染，水体发出恶臭，城市环境差，周边居民正常生活，为了解决河道污染的问题，通常的做法是隔断时间断流清淤，由于城市河道长，这种做法工程量大，效果不明显，并且周期长，对河道两边的道路易造成破坏，影响居民出行；目前还未有对城市河道进行综合治理的方法，多数只是通过设备来对河道局部环境进行改善，公开号为CN204111428U公开了一种河道治污专用曝气装置，通过该装置制造氧气，防止水体无氧，虽然采用曝气装置，但由于城市河道河水环境恶劣，其效果使用不明显，其只适合在小范围内使用；又如公开号CN103771664B公开了一种河道生态修复系统，其利用生物治污的方法，但河道的淤泥不能有效的去除，总所周知，河道中的淤泥是导致水体被污染的主因，该公开并未有效解决，同时其治理方法过于复杂，治污成本高，不可持续，不能大规模扩大使用。还有发明人发明了一种分段式综合治理城市河道污水的方法，公开号为CN104193095A，因其治理效果明显，但其制作成本高，对于治理设备需要从厂区定制。 Most urban rivers are composed of domestic sewage and rainwater. The eutrophication of the rivers and the deposition of silt lead to pollution of the rivers. The water body emits a foul smell. The urban environment is poor and the surrounding residents live normally. In order to solve the problem of river pollution, the usual method is to cut off the flow of time Dredging, due to the long length of the urban river, this method requires a large amount of work, the effect is not obvious, and the cycle is long, it is easy to cause damage to the roads on both sides of the river, affecting the travel of residents; there is no comprehensive treatment method for urban rivers, and most Only through the equipment to improve the local environment of the river course, the publication number is CN204111428U discloses a special aeration device for river pollution control, through which oxygen is produced to prevent the anaerobic water body. Although the aeration device is used, due to the The environment is harsh, its effect is not obvious, and it is only suitable for use in a small area; and for example, the publication number CN103771664B discloses a river ecological restoration system, which utilizes the method of biological pollution control, but the silt of the river cannot be effectively removed. As we all know, the silt in the river course is the main cause of water pollution. This publication has not effectively solved it. At the same time, the treatment method is too complicated, the cost of pollution control is high, unsustainable, and cannot be used on a large scale. Also the inventor has invented a method for segmented comprehensive treatment of urban river sewage, the publication number is CN104193095A, because of its obvious treatment effect, but its production cost is high, and the treatment equipment needs to be customized from the factory area.
发明内容 Contents of the invention
本发明的目的在于提供一种城市河道综合治理方法，解决了目前对治理城市污染河道手段单一、效果不明显的问题。 The purpose of the present invention is to provide a method for comprehensive treatment of urban rivers, which solves the current problems of single means and ineffective effects for controlling urban polluted rivers.
本发明是这样实现的，其特征在于：根据进水量距河道进污口1-10米处设有挡水墙体一，所述挡水墙体一上设有平台，平台上依次设有1-3层过滤网，所述过滤网的密度依次减小，挡水墙体一上开有出水孔一，出水孔一连接出水管，离挡水墙体一的下游100-1000米处设有挡水墙体二，所述挡水墙体一和挡水墙体二之间的河道设有凹槽，凹槽深度30-60cm，所述挡水墙体二的底部设有出水孔二，在挡水墙体一和挡水墙体二之间的河道上游和中游种植阔叶植物，在挡水墙体一和挡水墙体二之间的河道下游安装浮床，所述在挡水墙体一和挡水墙体二之间的河道内定期投放复合菌剂， The present invention is realized in this way, and it is characterized in that: according to the water inflow, a water retaining wall is provided at a place 1-10 meters away from the sewage inlet of the river, and a platform is arranged on the first water retaining wall, and a platform is sequentially arranged on the platform. - 3 layers of filter screens, the density of the filter screens decreases successively, there is a water outlet hole 1 on the water retaining wall body 1, and the water outlet hole 1 is connected to the water outlet pipe, and a place 100-1000 meters downstream from the water retaining wall body 1 is provided The second water retaining wall, the channel between the first water retaining wall and the second water retaining wall is provided with a groove, the depth of the groove is 30-60cm, and the bottom of the second water retaining wall is provided with a second water outlet, Broad-leaved plants are planted in the upper and middle reaches of the river between the first retaining wall and the second retaining wall, and a floating bed is installed in the downstream of the river between the first retaining wall and the second retaining wall. In the river between Body 1 and Water Retaining Wall 2, compound bacterial agents are regularly placed,
所述出水孔一的高度根据水位可上下调节。 The height of the first water outlet hole can be adjusted up and down according to the water level.
所述挡水墙体一的高度高于挡水墙体二的高度。 The height of the first water retaining wall is higher than that of the second water retaining wall.
所述复合菌剂由重量份乳酸菌30-40、硝化细菌15-25和酵母菌10-15组成 The composite bacterial agent is composed of 30-40 parts by weight of lactic acid bacteria, 15-25 parts of nitrifying bacteria and 10-15 parts of saccharomyces
本发明的技术效果是：其结构原理简单，便于实现，采用物理方法和治污植物的方法即可很好实现对城市河道的综合治理，不需要添加其他化学制剂和生物反应，对水体不会造成二次污染，其操作过程只需普通环卫工人即可操作实现，对人员素质要求低，同时对周边环境没有影响，并且其建材易得，成本低廉，便于实施推广。 The technical effect of the present invention is: its structural principle is simple, easy to realize, and the comprehensive treatment of urban rivers can be well realized by using physical methods and methods of pollution control plants, without adding other chemical preparations and biological reactions, and will not affect the water body Cause secondary pollution, the operation process can be realized only by ordinary sanitation workers, low quality requirements for personnel, and no impact on the surrounding environment, and its building materials are easy to obtain, low cost, and easy to implement and promote.
附图说明 Description of drawings
图1为本发明的结构示意图。 Fig. 1 is a structural schematic diagram of the present invention.
在图中，1、挡水墙体一 2、过滤网 3、出水孔一 4、河道 5、挡水墙体二 6、凹槽。 In the figure, 1. Water retaining wall 1 2. Filter screen 3. Water outlet 1 4. River course 5. Water retaining wall 2 6. Groove.
具体实施方式 detailed description
如图1所示，本发明是这样实现的，根据进水量距河道进污口1-10米处设有挡水墙体一1，城市污水首先进入挡水墙体一1的范围内，所述挡水墙体一上设有平台，平台上依次设有1-3层过滤网2，通过过滤网2将垃圾阻挡在挡水墙体一1内，防止其进入主 河道，同时便于环卫工人对集中的垃圾清理，垃圾每天集中处理，效果高，环卫工人劳动强度低，同时过滤网的密度依次减小，这样就可以防止不同大小的垃圾堆积在一起，防止过滤网被堵塞，导致污水溢出过滤网，挡水墙体一上开有出水孔一3，出水孔一3连接出水管，离挡水墙体一的下游100-1000米处设有挡水墙体二5，所述挡水墙体一和挡水墙体二之间的河道设有凹槽6，凹槽深度30-60cm，所述挡水墙体二的底部设有出水孔二，在挡水墙体一和挡水墙体二之间的河道上游和中游种植阔叶植物，在挡水墙体一和挡水墙体二之间的河道下游安装浮床。污水从挡水墙体一流入到挡水墙体一和挡水墙体二之间的河道4，其垃圾已经被过滤网过滤，其污水夹带的泥沙进入到挡水墙体一和挡水墙体二之间的河道，由于设有凹槽，通过沉淀，淤泥逐渐沉入到凹槽内，河道内增加凹槽，凹槽增加了淤泥下降高度，便于淤泥沉积，同时通过阔叶植物对污水的过滤作用，进一步收集淤泥到凹槽内，由于挡水墙体一和挡水墙体二之间的河道长度足够长，其绝大多数的淤泥能够被收集，其下游的浮床对水体进行吸附，这样流出挡水墙体二的河水符合水体能够自身净化的标准，当挡水墙体一和挡水墙体二之间的河道的淤泥收集到一定程度后，打开出水孔一，出水管越过挡水墙体一和挡水墙体二之间的河道，将水排出，与此同时将挡水墙体一和挡水墙体二之间的河道的河水快速排出，及时清理凹槽内的淤泥而后关闭出水孔一，这样就可避免对全河道的淤泥进行清理，只需对固定的末端河道清淤即可，定期投放复合菌剂，便于清楚河道中的有机物。 As shown in Figure 1, the present invention is realized in this way, according to the water inflow, a water retaining wall body-1 is provided at 1-10 meters away from the river channel sewage inlet, and urban sewage first enters in the scope of the water retaining wall body-1, so The water retaining wall 1 is provided with a platform, and the platform is provided with 1-3 layers of filter screens 2 in turn, and the garbage is blocked in the water retaining wall 1 by the filter screen 2 to prevent it from entering the main river, and at the same time, it is convenient for sanitation workers For centralized garbage cleaning, the garbage is treated in a centralized manner every day, the effect is high, the labor intensity of the sanitation workers is low, and the density of the filter screen is reduced in turn, so that it can prevent garbage of different sizes from accumulating together, prevent the filter screen from being blocked, and cause sewage to overflow Filter screen, water retaining wall one is provided with water outlet hole one 3, water outlet hole one 3 is connected to the water outlet pipe, water retaining wall two 5 is arranged at the downstream 100-1000 meters away from water retaining wall body one, and the water retaining wall body two 5 is arranged. The channel between the first wall and the second retaining wall is provided with a groove 6, the groove depth is 30-60cm, and the bottom of the second retaining wall is provided with a water outlet hole 2, between the first retaining wall and the retaining wall Broad-leaved plants are planted in the upstream and middle reaches of the river between the second wall, and a floating bed is installed in the downstream of the river between the first and second retaining walls. Sewage flows from water retaining wall one to the river channel 4 between water retaining wall one and water retaining wall two. The river channel between the two walls has grooves, through sedimentation, the silt gradually sinks into the grooves, adding grooves in the river channel, the grooves increase the height of the silt drop, which is convenient for silt deposition, and at the same time through the broad-leaved plants The filtering effect of the sewage further collects the silt into the groove. Since the length of the channel between the first retaining wall and the second retaining wall is long enough, most of the silt can be collected, and the floating bed downstream of the water body Adsorption, so that the river water flowing out of the water retaining wall 2 meets the standard that the water body can purify itself. When the silt in the river between the water retaining wall 1 and the water retaining wall 2 is collected to a certain extent, the water outlet hole 1 is opened, and the outlet pipe Cross over the river between the water retaining wall 1 and the water retaining wall 2, discharge the water, and at the same time quickly discharge the river water in the river between the water retaining wall 1 and the water retaining wall 2, and clean the groove in time Then close the water outlet hole 1, so as to avoid cleaning the silt of the whole river, only need to desilt the fixed end of the river, and regularly put in the compound bacterial agent to facilitate the removal of organic matter in the river.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276271.9A CN105731737B (en) | 2016-04-29 | 2016-04-29 | Comprehensive management method of urban river |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610276271.9A CN105731737B (en) | 2016-04-29 | 2016-04-29 | Comprehensive management method of urban river |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105731737A true CN105731737A (en) | 2016-07-06 |
| CN105731737B CN105731737B (en) | 2019-10-08 |
Family
ID=56288434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610276271.9A Expired - Fee Related CN105731737B (en) | 2016-04-29 | 2016-04-29 | Comprehensive management method of urban river |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105731737B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129112A (en) * | 2017-06-25 | 2017-09-05 | 花王生态工程股份有限公司 | A kind of environmental improvement system |
| CN107487940A (en) * | 2017-09-07 | 2017-12-19 | 广州市天瑞环保科技有限公司 | A kind of sewage disposal system and method to city river |
| CN109650654A (en) * | 2018-12-25 | 2019-04-19 | 花王生态工程股份有限公司 | A kind of river channel ecology harnessing project |
| CN110981102A (en) * | 2019-12-19 | 2020-04-10 | 广东东华园林绿化工程有限公司 | A landscape pool for restoring the ecological environment of water pollution and its use method |
| CN114751604A (en) * | 2022-06-07 | 2022-07-15 | 江苏经贸职业技术学院 | Ecological plant purification structure of view class river course |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081188A (en) * | 1994-06-16 | 1996-01-09 | Shimizu Corp | Contaminated water purification unit using reed and sewage or sludge treatment device using the same |
| CN104193095A (en) * | 2014-09-02 | 2014-12-10 | 南昌工程学院 | Sectional-type comprehensive treatment method for urban river course sewage |
| CN104478021A (en) * | 2014-12-11 | 2015-04-01 | 浙江竟成环保科技有限公司 | Combined pollution source control device and method |
-
2016
- 2016-04-29 CN CN201610276271.9A patent/CN105731737B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH081188A (en) * | 1994-06-16 | 1996-01-09 | Shimizu Corp | Contaminated water purification unit using reed and sewage or sludge treatment device using the same |
| CN104193095A (en) * | 2014-09-02 | 2014-12-10 | 南昌工程学院 | Sectional-type comprehensive treatment method for urban river course sewage |
| CN104478021A (en) * | 2014-12-11 | 2015-04-01 | 浙江竟成环保科技有限公司 | Combined pollution source control device and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107129112A (en) * | 2017-06-25 | 2017-09-05 | 花王生态工程股份有限公司 | A kind of environmental improvement system |
| CN107129112B (en) * | 2017-06-25 | 2023-12-08 | 花王生态工程股份有限公司 | Environment treatment system |
| CN107487940A (en) * | 2017-09-07 | 2017-12-19 | 广州市天瑞环保科技有限公司 | A kind of sewage disposal system and method to city river |
| CN109650654A (en) * | 2018-12-25 | 2019-04-19 | 花王生态工程股份有限公司 | A kind of river channel ecology harnessing project |
| CN110981102A (en) * | 2019-12-19 | 2020-04-10 | 广东东华园林绿化工程有限公司 | A landscape pool for restoring the ecological environment of water pollution and its use method |
| CN114751604A (en) * | 2022-06-07 | 2022-07-15 | 江苏经贸职业技术学院 | Ecological plant purification structure of view class river course |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105731737B (en) | 2019-10-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105731737B (en) | Comprehensive management method of urban river | |
| CN102505728A (en) | Complete technology for resource utilization of rainwater | |
| CN202080984U (en) | Tandem type multi-stage hydraulic drop integrated vertical flow constructed wetland equipment | |
| CN104529067B (en) | A kind of farmland initial rainwater pollutant of stopping flows into the ecological purification system of rural trench | |
| CN102001756B (en) | Stable surface flow wetland for preventing silting and sewage treatment method | |
| CN104773914A (en) | Collecting and treating device for rural disordered-emission sewage | |
| CN204281514U (en) | A kind of dispersant type domestic wastewater treatment system | |
| CN206599473U (en) | Landscape type effluent treatment plant | |
| CN203419813U (en) | Comprehensive treatment system of rural environment | |
| CN205076891U (en) | Multistage independent assortment formula horizontal undercurrent constructed wetland pollutes water treatment unit | |
| CN104710092A (en) | Plastic steel biogas septic tank | |
| CN103951136B (en) | A kind of balcony waste water, early-stage rainwater cleaner and purifying method being applied to Storm Sewer Network | |
| CN205382060U (en) | Villages and small towns domestic sewage ecologization oligodynamic treatment system | |
| CN2913350Y (en) | Purifying device for centralization discharge area-source pollution | |
| CN103641282B (en) | Method for performing surface slow-rate infiltration land treatment on rural domestic wastewater | |
| WO2018018657A1 (en) | Rainwater sewage interception method based on membrane separation technique | |
| CN205662974U (en) | Environmental rainwater branch matter collection in hillock district holds system | |
| CN105648974B (en) | Desilting in situ, oxygenation and the Scene construction method of a kind of polluted river channel | |
| CN209835895U (en) | Rural domestic sewage ditch side clean system | |
| CN103215985A (en) | Community rainwater utilization system based on secondary split-flow of rainwater and sewage | |
| CN103785220B (en) | A kind of building rain water filtering device | |
| CN203048673U (en) | Artificial wetland system for treating lead-contained wastewater | |
| CN202248042U (en) | Device for collecting and treating initial rainwater of villages in river network area | |
| CN104975644A (en) | Special pipe storage system for road initial rainwater | |
| CN204529459U (en) | Riverbank formula copper water-supply pipe is composite ecological bed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191008 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |