CN110117069A - One kind being suitable for domestic sewage treatment integration precipitating divisor - Google Patents
One kind being suitable for domestic sewage treatment integration precipitating divisor Download PDFInfo
- Publication number
- CN110117069A CN110117069A CN201910414693.1A CN201910414693A CN110117069A CN 110117069 A CN110117069 A CN 110117069A CN 201910414693 A CN201910414693 A CN 201910414693A CN 110117069 A CN110117069 A CN 110117069A
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- Prior art keywords
- chamber
- divisor
- sewage treatment
- domestic sewage
- precipitating
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Classifications
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- 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
- C02F3/28—Anaerobic digestion processes
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Biological Wastes In General (AREA)
Abstract
The invention discloses one kind to be suitable for domestic sewage treatment integration precipitating divisor, it is uneven that it solves sewage apparatus water inlet in parallel in current sewage treatment project, the problem of sewage impacts the water of equipment can not be buffered, it is simple with structure, it can effectively realize a point water, reduce the beneficial effect that solid-state sundries enters sewage apparatus functional areas, its scheme is as follows: one kind being suitable for domestic sewage treatment integration precipitating divisor, including shell, water inlet and discharge outlet is arranged in shell, at least two pieces of partitions are equipped in shell so that enclosure interior is divided into several chambers, adjacent chamber mutually passes to the flowing for realizing sewage, and overflow weir wherein is set at the top of the partition between last two chambers that sewage flows through, multiple cavities are equipped in the last one chamber, each cavity is communicated with the chamber of preceding side, with real by overflow weir and cavity Now water is divided to act on.
Description
Technical field
The present invention relates to rural area decentralized type sewage process fields, are suitable for domestic sewage treatment with one more particularly to one kind
Bodyization precipitates divisor.
Background technique
With the development of national economy, the raising of living standards of the people, the vast rural areas, a large amount of untreated at home
Sewage is directly discharged into the river in rural area, pool, largely has exceeded the self-purification ability of enviroment, and then polluted water body environment,
Affect the quality of life of villages and small towns resident.
To improve rural residence environment, occur large quantities of rural area decentralized type sewage abatement equipments in the market, such as septic tank, only
Change slot, membrane bioreactor etc..Such equipment volume is small and exquisite, easy for installation, is suitble to sparsely populated area to use, especially exists
Rural area, but such equipment be mostly can mass production standard device, be unable to satisfy the diversified sewage treatment in rural area
Amount demand, therefore many areas need to be used in parallel by 2 and the above sewage disposal device.User's sewage enters by water collection pipe net
2 and when the above sewage disposal device used in parallel, without division box, lead to the treating capacity of each sewage disposal device in this way
It is not quite similar, the workload of individual sewage disposal devices may be will increase.
In addition, inventor also found that small rural sewage disposal device water resistant stroke ability is weak, solid-state sundries easily enters
Functional areas can have an adverse effect to the normal operation of sewage disposal device.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides one kind to be suitable for domestic sewage treatment integration precipitating
Divisor can be realized and effectively divide water, and has the ability for improving the stroke of small sewage treatment equipment water resistant.
It is a kind of as follows with the concrete scheme of integration precipitating divisor suitable for domestic sewage treatment:
One kind is suitable for domestic sewage treatment integration precipitating divisor, including shell, shell be arranged water inlet and
Discharge outlet, for the interior at least two pieces of partitions that are equipped with of shell enclosure interior is divided into several chambers, it is dirty that adjacent chamber mutually passes to realization
The flowing of water, and overflow weir is set at the top of the partition between the last two chambers that wherein sewage flows through, in the last one chamber
Equipped with multiple cavities, each cavity is communicated with the chamber of preceding side, to divide water to act on by overflow weir and cavity realization.
Above-mentioned divisor, adjacent chamber communicate, sewage enter from the inlet successively enter from chamber it is another
A chamber realizes repeatedly fermentation and precipitating, and by the way that overflow weir is arranged at the top of a wherein partition, clear liquid is logical in chamber on front side of the partition
The mode for crossing overflow enters the indoor each cavity of next chamber, effectively realizes and divides water, is then discharged again by discharge outlet, and enter
The decentralized type sewage processing equipment of each parallel connection realizes equilibrium treatment.
Further, it is integer that the partition, which includes n block, n > 1, and n, and the chamber is by the partition from side to another
Side be divided into first chamber, second chamber ... the n-th chamber and the (n+1)th chamber.
Further, the first partition of the first chamber side is equipped with bend pipe to realize first chamber and second chamber
It communicates.
Further, the arrival end of the bend pipe is arranged downward, and bottom of the arrival end of bend pipe apart from the shell has
The distance of setting is to separate heavy mud and dross, the heavy cement content being accordingly lowered into second chamber in this way.
Further, diaphragm plate, the in this way dross of the chamber are equipped in the chamber on front side of partition equipped with the overflow weir
It is retained down, diaphragm plate is lower than the overflow weir, and diaphragm plate is equipped with the first pipe, and the first pipe cooperates with diaphragm plate to retain
Heavy mud and dross avoid solid sundries and dross from entering subsequent distributed treatment equipment to improve the clean level of clear liquid.
Further, elevator pump is set in (n+1)th chamber, and elevator pump is connected by drainpipe and the discharge outlet
It connects.
Further, the overflow weir adjusts the height of water level relative to the movable setting of the partition where it, can also
Difference in height problem caused by being conveniently adjusted in work progress.
Further, the water inlet is set at the shell first chamber.
Further, cylinder is increased in the case top setting, increases cylinder and communicates with the enclosure interior first chamber.
Further, first pipe is located at the middle section of place chamber, and bottom of the bottom end of the first pipe apart from the shell
There is the distance of setting in portion, and such first pipe can not only carry out water in corresponding chambers, but also the first pipe is again plant maintenance
When extraction mud pipe.
Further, the volume of two of them cavity is identical or different in the last one described chamber, this is depended primarily on
The size of decentralized type sewage processing equipment, decentralized type sewage processing equipment treating capacity is big, then the cavity volume being attached thereto is big, if
Multiple decentralized type sewage processing treating capacities are identical, then the volume of each cavity is identical.
Compared with prior art, the beneficial effects of the present invention are:
1) present invention can be realized a point water by the setting of overflow weir, to facilitate equipment and multiple decentralized type sewages to handle
Subsequent sewage disposal device equilibrium treatment sewage is convenient in the connection of equipment.
2) equipment is divided into several chambers, realizes sewage in front side chamber by the present invention by the setting of multiple partitions
Precipitating, thus be conducive to intermediate clear liquid and base sludge, top dross separates, the solid-state sundries in user's sewage can be retained,
It avoids solid sundries from entering the functional areas of sewage disposal device, reduces the O&M frequency of sewage disposal device, while integral device
Set on the front side of decentralized type sewage processing equipment in parallel, it can play the role of adjusting well, it is anti-that sewage disposal device can be effectively improved
Water impact load ability.
3) present invention is whole has the function of a point water, can expand the scope of application of standardization sewage disposal device at present, if
Standby structure is simple, integrated level is high, occupied area is small, reduces rural sewage treatment engineering construction difficulty.
4) present device can carry out factory's batch micro operations, standardized production, it is ensured that quality is stablized.
5) present invention is by the setting of bend pipe, not only effectively realizes communicating for first chamber and second chamber, but also effectively
The bed mud precipitated in first chamber is avoided to enter second chamber.
6) present invention passes through the setting of diaphragm plate and the first pipe, can effectively cooperate the heavy mud of retention and dross, avoid solid
Sundries and dross enter subsequent distributed treatment equipment, influence the function of subsequent processing device.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is the schematic diagram one of equipment in the embodiment of the present invention.
Fig. 2 is water (flow) direction schematic diagram in the embodiment of the present invention.
Fig. 3 is water (flow) direction schematic top plan view in the embodiment of the present invention.
Fig. 4 is the schematic diagram two of equipment in the embodiment of the present invention.
In figure, 1 is shell, and 2 be first partition, and 3 be second partition, and 4 be vertical baffle, and 5 be diaphragm plate, and 6 be overflow weir,
7 be bend pipe, and 8 be the first pipe, and 9 be water inlet, and 10 be outlet pipe, and 11 is increase cylinder, and 12 be access cover frame, and 13 be access cover, 14
It is fastener for elevator pump, 15,16 be second chamber, and 17 be cavity.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the deficiencies in the prior art, in order to solve technical problem as above, this hair
The bright one kind that proposes is suitable for domestic sewage treatment integration precipitating divisor, with reference to the accompanying drawings of the specification, to this hair
It is bright to be further elaborated.
In a kind of typical embodiment of the invention, as shown in Figure 1 and Figure 4, one kind being suitable for domestic sewage treatment and uses
Water inlet 9 and discharge outlet 10 is arranged in integration precipitating divisor, including shell 1, shell 1, be equipped in shell at least two pieces every
Plate is to be divided into several chambers for enclosure interior, and adjacent chamber mutually passes to the flowing for realizing sewage, and wherein sewage flows through most
Overflow weir 6 is set at the top of partition between latter two chamber, is equipped with multiple cavities 17 in the last one chamber, each cavity 17 with
The chamber of preceding side communicates, and to divide water to act on by overflow weir 6 and the realization of cavity 17, sewage sequentially enters each from water inlet 9
Then chamber is discharged in the last one chamber by discharge outlet 10.
It is to be appreciated that being greater than 3 chambers if being equipped in shell, preferred embodiment is the partition in last two chambers
Overflow weir 6 is arranged in top, but overflow weir can also be arranged at the top of other partitions, it is not excluded that this possibility.
Further, shell 1 includes upper housing and lower case, is reliably connected between upper-lower casing by fastener, facilitates system
It makes, the material of shell 1 can be process for materials such as glass reinforced plastic, polyethylene material, polypropylene, metals, and 1 volume of shell is 1-
10m3, equipped with water-in and water-out pipeline, sewage enters integration through water inlet pipe and precipitates divisor shell 1, flows into simultaneously through outlet pipe 10
The decentralized type sewage processing equipment of connection.
Preferably, partition includes 2 pieces, and chamber is divided into first chamber, second chamber from side to the other side by partition
16 and third chamber, the volume of first chamber is greater than the sum of second chamber and the volume of third chamber, in other embodiments, every
The quantity of plate can also be 3 pieces or other quantity.
The first partition 2 of first chamber side is equipped with bend pipe 7 to realize communicating for first chamber and second chamber 16, bend pipe
7 arrival end is arranged downward, and the distance of setting is arranged at bottom of the arrival end of bend pipe 7 apart from the shell 1, and bend pipe 7 can be L
Type, and 7 middle section of bend pipe of L-type is circular shape, in the present embodiment, the quantity of bend pipe 7 can be two, and particular number can basis
The size of shell 1 is selected, and can also be other quantity.
Diaphragm plate 5 is equipped in chamber, that is, second chamber 16 on front side of partition equipped with the overflow weir 6, diaphragm plate 5 passes through
The first partition 2 and second partition 3 of two sides are supported, and diaphragm plate 5 is higher than the outlet end setting of bend pipe 7, and diaphragm plate 5 is lower than
Overflow weir 6 is arranged, and diaphragm plate 5 is equipped with the first pipe, and the first pipe and diaphragm plate cooperation are to retain heavy mud and dross, to improve clear liquid
Clean level, avoid solid sundries and dross from entering subsequent distributed treatment equipment.First pipe 8 is located at second chamber 16
Middle section, and the distance of setting is arranged at bottom of the bottom end of the first pipe 8 apart from the shell, the top of the first pipe 8 is simultaneously more than diaphragm plate 5
Lower than the setting of overflow weir 6.
In addition, the first pipe 8 selects straight pipe, extraction mud pipe when straight pipe was both water pipe and plant maintenance, the first pipe
8 can be φ 110mm~φ 350mm.
Overflow weir 6 is relative to the movable setting of second partition 3 to adjust height of water level, and specifically, the setting of overflow weir 6 is logical
Through-hole is arranged in hole, second partition 3, and bolt realization overflow weir 6 is reliably connected with second partition 3, sets in sewage treatment in parallel
In standby installation process, if installation level is inadequate, equipment can be made relative to the height of second partition 3 by adjusting overflow weir
Uniformly divide water, horizontal departure when construction is effectively avoided to lead to a point phenomenon for water unevenness, so that equipment has adjustment work progress
In caused by difference in height act on.
Third chamber is divided into several cavities, and adjacent cavity 17 is simultaneously not communicated with, and more by being arranged in third chamber
The height of block vertical baffle 4, vertical baffle is identical as the height of third chamber, to realize different cavity settings；Third chamber
In elevator pump 14 is set in each cavity, elevator pump 14 is connect with the discharge outlet by drainpipe, is provided at discharge outlet
Water pipe 10 is discharged by the setting of elevator pump, it can be achieved that being realized to the clear liquid after overflow weir 6 divides equally water by elevator pump,
Water inlet 9 is set to 1 first chamber of shell, and water inlet 9 is oppositely arranged with first partition 2.Any two of them in third chamber
The volume of cavity is identical or different, this depends primarily on the size of decentralized type sewage processing equipment, decentralized type sewage processing equipment
Treating capacity is big, then the cavity volume being attached thereto is big, if multiple decentralized type sewages processing treating capacity is identical, the body of each cavity
Product is identical.In the present embodiment, the volume of each cavity is identical in third chamber.
Wherein, elevator pump 14 can be small-power submersible sewage pump, self priming pump, fresh water pump, airlift pump etc..
In some embodiments, access cover 13 is arranged by access cover frame 12 in case top, in other embodiments, according to
Geographical environment locating for equipment, case top increase cylinder 11 by bolt setting, and increasing cylinder can be
Drainage pipeline or other pipelines, increase cylinder 11 size be less than shell size increase cylinder to meet the buried depth requirement of equipment
11 communicate the cleaning, it can be achieved that solid sundries in first chamber with the first chamber of the enclosure interior, increase 11 top of cylinder
Be arranged access cover frame 12, locked especially by bolt, by access cover frame 12 be arranged access cover 13, need check or overhaul or
When maintenance, access cover 13 is opened, related work can be carried out to first chamber, wherein the size and number of access cover 13 can be with
Place capacity is changed, and size can be
The sewage of user's discharge enters the first chamber of equipment through water inlet pipe and water inlet, as shown in Figures 2 and 3, the
In the residence time of one chamber, the solid-state sundries in sewage carries out anaerobic fermentation, and fraction solids sundries is in anaerobic fermentation gas
Dross is formed under effect, remaining solid sundries then sinks to forming bed mud.Intermediate clear liquid mixes the solid not being kept completely separate and passes through L
Type bend pipe enters second chamber.Same reaction occurs in second chamber, fraction solids form dross, remaining sundries forms bottom
Mud.By setting diaphragm plate and the first pipe, the dross of second chamber is trapped, and clear liquid is entered by way of the first pipe overflow to overflow
Flow the side on weir.It is respectively enterd in the cavity of isometric(al), then flow automatically or pumped by water collecting dike by the sewage precipitated twice and is strong
The mode of system draining enters decentralized type sewage processing equipment in parallel, have reduce construction cost, realize equipment in parallel measure into
The characteristics of water, raising sewage disposal device water resistant stroke load-bearing capacity.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. one kind is suitable for domestic sewage treatment integration precipitating divisor, which is characterized in that including shell, shell setting
Water inlet and discharge outlet, enclosure interior is divided into several chambers, adjacent chamber communicates the interior at least two pieces of partitions that are equipped with of shell
Overflow weir is set at the top of the partition to realize the flowing of sewage, and between the last two chambers that wherein sewage flows through, last
Multiple cavities are equipped in a chamber, each cavity is communicated with the chamber of preceding side, to divide water to make by overflow weir and cavity realization
With.
2. a kind of domestic sewage treatment that is suitable for according to claim 1 is with integrated precipitating divisor, feature exists
It include n block, n > 1, and n in, the partition is integer, the chamber is divided into the by the partition from side to the other side
One chamber, second chamber ... the n-th chamber and the (n+1)th chamber.
3. a kind of domestic sewage treatment that is suitable for according to claim 2 is with integrated precipitating divisor, feature exists
First partition in, the first chamber side is equipped with bend pipe to realize communicating for first chamber and second chamber.
4. a kind of domestic sewage treatment that is suitable for according to claim 3 is with integrated precipitating divisor, feature exists
In the arrival end of the bend pipe is arranged downward, and there is the distance of setting in bottom of the arrival end of bend pipe apart from the shell to divide
From heavy mud and dross.
5. a kind of domestic sewage treatment that is suitable for according to claim 1 is with integrated precipitating divisor, feature exists
In equipped with diaphragm plate in the chamber on front side of the partition equipped with the overflow weir, diaphragm plate is lower than the overflow weir, and on diaphragm plate
Equipped with the first pipe, the first pipe is with diaphragm plate cooperation to retain heavy mud and dross.
6. a kind of domestic sewage treatment that is suitable for according to claim 2 is with integrated precipitating divisor, feature exists
In setting elevator pump in (n+1)th chamber, elevator pump is connect by drainpipe with the discharge outlet.
7. a kind of domestic sewage treatment that is suitable for according to claim 1 is with integrated precipitating divisor, feature exists
In the overflow weir adjusts the height of water level relative to the movable setting of the partition where it.
8. a kind of domestic sewage treatment that is suitable for according to claim 1 is with integrated precipitating divisor, feature exists
In the volume of two of them cavity is identical or different in the last one described chamber.
9. a kind of domestic sewage treatment that is suitable for according to claim 2 is with integrated precipitating divisor, feature exists
In cylinder is increased in the case top setting, increases cylinder and communicates with the enclosure interior first chamber.
10. a kind of domestic sewage treatment that is suitable for according to claim 5 is with integrated precipitating divisor, feature exists
In first pipe is located at the middle section of place chamber, and the distance of setting is arranged at bottom of the bottom end of the first pipe apart from the shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414693.1A CN110117069B (en) | 2019-05-17 | 2019-05-17 | Be applicable to domestic sewage treatment with integration precipitation dividing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910414693.1A CN110117069B (en) | 2019-05-17 | 2019-05-17 | Be applicable to domestic sewage treatment with integration precipitation dividing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110117069A true CN110117069A (en) | 2019-08-13 |
| CN110117069B CN110117069B (en) | 2022-01-28 |
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ID=67522779
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910414693.1A Active CN110117069B (en) | 2019-05-17 | 2019-05-17 | Be applicable to domestic sewage treatment with integration precipitation dividing equipment |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116463A1 (en) * | 2008-03-17 | 2009-09-24 | 株式会社クボタ | Purifying tank |
| CN104203361A (en) * | 2012-03-23 | 2014-12-10 | Amtpacific株式会社 | Liquid dispensing device |
| CN205598717U (en) * | 2016-04-06 | 2016-09-28 | 深圳市清泉水业股份有限公司 | Turn over board filtering pond with sweep and wash function |
| CN208104165U (en) * | 2018-03-07 | 2018-11-16 | 浙江达人环保科技股份有限公司 | Composite medium artificial wet land distributing domestic sewage in rural areas ecological treatment system |
| CN208617638U (en) * | 2018-05-15 | 2019-03-19 | 烟台和盛康洁环保科技有限公司 | A kind of sewage integrated treatment device |
| CN208776548U (en) * | 2018-07-17 | 2019-04-23 | 安徽圣力环境科技有限公司 | A kind of three compartment septic tank of disinfecting |
-
2019
- 2019-05-17 CN CN201910414693.1A patent/CN110117069B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116463A1 (en) * | 2008-03-17 | 2009-09-24 | 株式会社クボタ | Purifying tank |
| CN104203361A (en) * | 2012-03-23 | 2014-12-10 | Amtpacific株式会社 | Liquid dispensing device |
| CN205598717U (en) * | 2016-04-06 | 2016-09-28 | 深圳市清泉水业股份有限公司 | Turn over board filtering pond with sweep and wash function |
| CN208104165U (en) * | 2018-03-07 | 2018-11-16 | 浙江达人环保科技股份有限公司 | Composite medium artificial wet land distributing domestic sewage in rural areas ecological treatment system |
| CN208617638U (en) * | 2018-05-15 | 2019-03-19 | 烟台和盛康洁环保科技有限公司 | A kind of sewage integrated treatment device |
| CN208776548U (en) * | 2018-07-17 | 2019-04-23 | 安徽圣力环境科技有限公司 | A kind of three compartment septic tank of disinfecting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110117069B (en) | 2022-01-28 |
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Effective date of registration: 20221130 Address after: Zhengwen Road, Yushan high tech Industrial Park, Suzhou City, Jiangsu Province, 215500 Patentee after: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Patentee after: CRRC Shandong Wind Power Co.,Ltd. Address before: 215500 Text Road of Yushan High-tech Industrial Park, Changshu City, Jiangsu Province Patentee before: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. |
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Address after: Zhengwen Road, Yushan high tech Industrial Park, Suzhou City, Jiangsu Province, 215500 Patentee after: Jiangsu CRRC Huateng Environmental Protection Technology Co.,Ltd. Patentee after: CRRC Shandong Wind Power Co.,Ltd. Address before: Zhengwen Road, Yushan high tech Industrial Park, Suzhou City, Jiangsu Province, 215500 Patentee before: JIANGSU ZHONGCHE ENVIRONMENTAL PROTECTION EQUIPMENT Co.,Ltd. Patentee before: CRRC Shandong Wind Power Co.,Ltd. |