CN109704481A - A kind of municipal sewage environment protection treating device - Google Patents
A kind of municipal sewage environment protection treating device Download PDFInfo
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- CN109704481A CN109704481A CN201910049385.3A CN201910049385A CN109704481A CN 109704481 A CN109704481 A CN 109704481A CN 201910049385 A CN201910049385 A CN 201910049385A CN 109704481 A CN109704481 A CN 109704481A
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- cleaning
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- rose box
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Abstract
The present invention relates to a kind of municipal sewage environment protection treating devices, belong to the technical field of sewage treatment, its key points of the technical solution are that a kind of municipal sewage environment protection treating device, including standing pond, the standing pond is parallel with two groups of cleaning assemblies, every group of cleaning assembly includes the Rose Box being sequentially communicated, flocculation tanks and adsorption box, vertical partition and the cleaning plate parallel with partition are provided in Rose Box, there are gaps between the top of partition and the inner wall of Rose Box, there are gaps between the bottom end of cleaning plate and the inner wall of Rose Box, and multiple cleaning needles perpendicular to cleaning plate are fixedly installed on the vertical side of cleaning plate, cleaning plate is connect with Rose Box vertical sliding, achieve the effect that improve sewage treatment capacity.
Description
Technical field
The present invention relates to the technical field of sewage treatment more particularly to a kind of municipal sewage environment protection treating devices.
Background technique
Increasingly severe the problem of environmental pollution in recent years, environmental pollution can cause directly destruction and shadow to the ecosystem
It rings, wherein the most serious with water pollution.Water pollution is an important issue, and since the density of population is big, water consumption in city
It is more, therefore the municipal sewage amount generated is also larger.
Existing to can refer to the Chinese patent that the public step number of application is CN105582717A, it discloses a kind of sewage treatments
Case includes tank body, filter and point water plate, and filter is set to the lateral surface of tank body, and point water plate is set to water
The inside of case ontology is provided with filter screen on filter, and the outlet of filter is set as and the upper end face contact type of point water plate connects
It connects, the flange vertical with the axis of point water plate is provided in the upper surface of point water plate, be arranged between two flanges of point water plate
There is aperture, be provided in the lower end surface of point water plate parallel with the axis of point water plate convex stupefied, is easy to use.
Prior art among the above has the following deficiencies: can be miscellaneous containing more solid in the sewage due to city
Matter, waste water treatment box among the above is in use for some time, it is difficult to clear up, therefore can block, at sewage
Reason ability substantially reduces.
Summary of the invention
The purpose of the present invention is to provide a kind of municipal sewage environment protection treating devices for improving sewage treatment capacity.
Technical purpose of the invention has the technical scheme that
A kind of municipal sewage environment protection treating device, including pond is stood, the standing pond is parallel with two groups of cleaning assemblies, every group of cleaning
Component includes the Rose Box being sequentially communicated, flocculation tanks and adsorption box, and vertical partition and and partition are provided in Rose Box
Parallel cleaning plate, there are gaps between the top of partition and the inner wall of Rose Box, clear up the bottom end of plate and the inner wall of Rose Box
Between there are gap, and clear up on the vertical side of plate and be fixedly installed multiple cleaning needles perpendicular to cleaning plate, cleaning plate with
The connection of Rose Box vertical sliding.
Through the above technical solutions, municipal sewage drains into after standing pond, standing a period of time in pond is being stood first, thus
So that a part of biggish pollutant of weight is deposited in the bottom of pond for standing pond, then sewage can be discharged into simultaneously two it is in parallel clear
Reason component is cleared up, to share the cleaning pressure of cleaning assembly, so that cleaning work is more efficient, sewage is entrainment of dirt
Dye object initially enters in Rose Box, then along partition and cleaning plate meandering flow inside Rose Box, when sewage is by clear
When managing plate, the cleaning needle cleared up on plate can block the solid pollutant of a part, so that the flowage friction power of solid pollutant
Increase, eventually settles between cleaning needle, or be cleaned needle and tie, therefore substantially increase the cleaning efficiency of pollutant, and
And since the setting of partition and cleaning plate extends the circulation path of sewage, so that some of the contaminants in sewage can stop
It stays in Rose Box, improves the filter effect of sewage indirectly.Then sewage continues through flocculation tanks to reject suspended particulates, passes through
It crosses adsorption box to continue to adsorb molecule, and then substantially increases the purified treatment ability of sewage.
Due to being two groups of cleaning assembly synchronous filterings, ought wherein one group cleaning assembly blocking seriously need to clear up
When, it can be turned off, another group of cleaning assembly is allowed to keep prune job, it is then clear to serious cleaning assembly progress is blocked
Reason, therefore will not influence in prune job the control of sewage, for the prune job of Rose Box, will cleaning plate from
Then extraction in Rose Box cleans out the pollutant for being cleaned needle blocking.
The present invention is further arranged to: two vertical sides of the cleaning plate are fixedly installed multiple cleaning needles, and
The side of partition towards cleaning plate is also fixedly installed multiple cleaning needles, and the cleaning needle on partition and cleaning plate are towards partition side
Fixed cleaning needle mutually staggers.
Through the above technical solutions, due to the cleaning needle on partition and being cleared up when sewage is by between partition and cleaning plate
Cleaning needle on plate mutually staggers, and increases contact quantity and contact area of the cleaning needle with pollutant, therefore can will be dirty
Most of pollutant in water is stopped, so that the filtering dynamics of Rose Box greatly improves.
The present invention is further arranged to: the top of the flocculation tanks is fixedly installed addition bucket, and fixation is set inside flocculation tanks
It is equipped with vertical scoreboard, flocculation tanks are divided into mutually isolated flocculation chamber and clear water chamber by scoreboard, and Rose Box is connected to flocculation chamber,
The bottom of scoreboard offers intercommunicating pore, and the side of scoreboard towards flocculation chamber is provided with adjustable plate, adjustable plate it is parallel with scoreboard and with
The connection of flocculation tanks vertical sliding, adjustable plate block intercommunicating pore when sliding into flocculation tanks bottom just.
Through the above technical solutions, flocculant is added in addition bucket, flocculant is entered after flocculation chamber, is adjusted at this time
Plate covers intercommunicating pore, flocculant in intracavitary diffusion of flocculating, the suspended particulates in sewage adsorb it is agglomerating, when flocculation chamber
After interior floc sedimentation molding, upward sliding adjustable plate, so that intercommunicating pore will flocculate, chamber is connected to clear water chamber, after being flocculated agent filtering
Water enter in clear water chamber, and to be retained in flocculation intracavitary for pockets of suspended matter, so that the purified treatment dynamics of sewage is into one
Step is reinforced.
The present invention is further arranged to: the flocculation tanks are fixedly installed stirring motor, and the output shaft of stirring motor is fixed
It is connected with agitating shaft, it is intracavitary that agitating shaft protrudes into flocculation.
Through the above technical solutions, stirring motor drives agitating shaft rotation, agitating shaft can stir intracavitary water flow of flocculating,
So that the intracavitary flocculant that flocculates, which is added, to accelerate the purified treatment efficiency of sewage with quick adsorption suspended particulates.
The present invention is further arranged to: being fixedly installed upper layer and lower layer filter plate in the adsorption box, is pressed from both sides between two layers of filter plate
Equipped with active carbon slab, clear water chamber is connected to the top of adsorption box, and the bottom position of adsorption box is provided with outlet pipe.
Through the above technical solutions, municipal sewage after Rose Box and flocculation tanks, continues from the top of adsorption box
It enters in adsorption box, sewage is successively by the filter plate on upper layer, the filter plate of active carbon slab and lower layer, so that is contained in sewage is small
Micro- impurity is adsorbed by active carbon slab, further improves the treatment effect of sewage, the filter plate one of two sides above and below active carbon slab
Aspect can play certain filtration, on the other hand can also play a supporting role to active carbon slab.
The present invention is further arranged to: the bottom for standing pond is placed with promotion basket compatible with pond inner wall is stood,
The center position for promoting basket is fixedly connected with hoist cable, stands and is provided with fixed pulley above pond, the side for standing pond is provided with
Winding motor, the output shaft end of winding motor are fixedly connected with wind-up roll, and hoist cable is wrapped in wind-up roll after bypassing fixed pulley
On circumferential surface.
Through the above technical solutions, sewage enters after standing pond, a part of biggish solid pollutant of density can be settled
In the promotion basket of bottom of pond, when the solid pollutant for promoting basket collection is more, winding motor drives wind-up roll rotation, and hoist cable twines
It is wound on wind-up roll and drives promotion is blue to rise, operator can will promote basket and take out out of standing pond, pour out and be promoted in basket
Solid pollutant and then by promoted basket be reentered into stand pond in, it is ensured that stand pond in cleaning convenience, into
And standing pond is allowed to play the role of lasting standing, improve the processing capacity of sewage.
The present invention is further arranged to: being respectively arranged with valve at the communicating position in cleaning assembly described in two groups and standing pond
Door.
Through the above technical solutions, valve can play control action to the on-off of two groups of cleaning assemblies in parallel, in dirt
When dye degree is larger, two valves can be opened simultaneously, so that two groups of cleaning assemblies simultaneously participate in sewage treatment works, be improved
The purified treatment dynamics and treatment effeciency of sewage, when cleaning assembly using the time it is longer need to clear up when, it can be closed
In a valve, then corresponding cleaning assembly is cleared up, while another valve is in the open state, does not influence sewage
Processing work, improve the stability of sewage treatment.
The present invention is further arranged to: the inner wall of the Rose Box offers the slot being adapted to cleaning two Slideslip of plate,
The top of Rose Box offers clean-up port, and the top for clearing up plate is fixedly installed operation panel, and operation panel is perpendicular to cleaning plate and lid
Connection is detachably fixed by bolt between clean-up port, operation panel and Rose Box.
Through the above technical solutions, can looser a bolt when the solid pollutant in Rose Box is more, by operation panel from
Disassembled on Rose Box, then will cleaning plate taken out out of clean-up port, after taking out to cleaning plate and Rose Box inside into
Row cleaning, so that the cleaning of Rose Box is more convenient, further ensures the cleaning ability of Rose Box.
In conclusion advantageous effects of the invention are as follows:
1, by be arranged two groups of cleaning assemblies being arranged in parallel so that the purification of sewage puts more effort, cleaning assembly itself it is clear
Reason will not interfere sewage treatment operation；
2, by setting, needle is cleared up in fixed setting on cleaning plate and partition, allows Rose Box that most solid is dirty
Dye object is filtered, and improves the filtration treatment ability of sewage；
3, the processing capacity of sewage is further improved by setting flocculation tanks and adsorption box.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram for standing pond；
Fig. 3 is the cross-sectional view of Rose Box；
Fig. 4 is the cross-sectional view of flocculation tanks；
Fig. 5 is the cross-sectional view of adsorption box.
Appended drawing reference: 1, pond is stood；2, cleaning assembly；21, Rose Box；211, plate is cleared up；2111, operation panel；212, every
Plate；213, needle is cleared up；214, clean-up port；22, flocculation tanks；221, scoreboard；2211, intercommunicating pore；222, adjustable plate；223, it flocculates
Chamber；224, stirring motor；225, agitating shaft；226, addition bucket；2261, regulating valve；227, clear water chamber；23, adsorption box；231, it filters
Plate；232, active carbon slab；3, basket is promoted；31, hoist cable；32, fixed pulley；33, winding motor；34, wind-up roll；4, valve.
Specific embodiment
Below in conjunction with attached drawing, invention is further described in detail.
A kind of municipal sewage environment protection treating device stands pond 1 close to the side on top as shown in Figure 1, including standing pond 1
Be communicated with two groups of cleaning assemblies being arranged in parallel 2, every group of cleaning assembly 2 include the Rose Box 21 being sequentially communicated, flocculation tanks 22 with
And adsorption box 23.Municipal sewage, which is discharged into, to be stood in pond 1, and the biggish solid impurity of the density being mingled in sewage, which can be deposited in, stands pond
In 1, reach primary filtration, then sewage is successively flowed into Rose Box 21, flocculation tanks 22 and adsorption box 23 and is filtered for multiple times
Purification, substantially increases the treatment effect of sewage.After cleaning assembly 2 is longer using visual angle, need to carry out its inside clear
When washing, wherein one group of cleaning assembly 2 can be shut, keeps another group of cleaning assembly 2 that can continue to carry out sewage treatment works, so
One group of cleaning assembly 2 of pause is cleaned afterwards, restores to use again after cleaning up, then in the same way to remaining
One group of cleaning assembly 2 cleaned, therefore cleaning assembly 2 is not interfered with when being cleaned at the continuing purge of sewage
Reason.
The bottom of pond for standing pond 1 combined with Figure 1 and Figure 2, which is provided with, promotes basket 3, promotes the surrounding of basket 3 and stands the inner wall in pond 1
It slides against, is promoted and be provided with fixed pulley 32 at the apical position of basket 3, the opposite pond 1 that stands of fixed pulley 32 is rotatablely connected, and stands pond
1 outer wall is fixedly installed motor, and the output shaft of motor is fixedly connected with wind-up roll 34, and the center position for promoting basket 3 is fixed
It is connected with hoist cable 31, hoist cable 31 is wrapped on wind-up roll 34 around fixation after fixed pulley 32 straight up.Motor drives wind-up roll
34 rotations are then lifted out basket 3 and are driven rising and leave standing pond 1, operator so that hoist cable 31 is wrapped on wind-up roll 34
The solid pollutant promoted in basket 3 can be poured out, then basket 3 will be promoted and put back to the bottom of pond in standing pond 1, so that standing pond 1
Inside keeps cleaning, can play lasting standing filtration.
As shown in figure 3, Rose Box 21 is internally provided with multiple cleaning plates 211 and multiple partitions 212, cleaning plate 211 with every
Plate 212 is parallel to each other, and clears up plate 211 and the setting of the interval of partition 212, and the bottom and two sides of partition 212 and Rose Box 21 are solid
It connects, for the top with Rose Box 21 there are gap, the top of Rose Box 21 offers clean-up port 214, and the top of cleaning plate 211 is fixed
It is connected with the operation panel 2111 perpendicular to plate 211 is cleared up and with clean-up port 214 is covered on, cleaning plate 211 is interior with Rose Box 21
Wall slides against and with the bottom of Rose Box 21 there are gap, and operation panel 2111 passes through after covering clean-up port 214 with Rose Box 21
Bolt is detachably fixed connection.The two sides of cleaning plate 211 are fixedly installed multiple cleaning needles 213, and partition 212 is towards clearing up plate
211 side is also fixedly installed multiple cleaning needles 213, and clears up the multiple clear of plate 211 and the side facing each other of partition 212
Reason needle 213 is staggered.After sewage enters in Rose Box 21, on partition 212 and cleaning plate 211 are in Rose Box 21
Lower meandering flow, and some solid impurities in sewage can be cleaned needle 213 and block, so that the pollutant quilt in sewage
It effectively rejects, improves sewage treatment capacity.When the pollutant in Rose Box 21, which relatively mostly occurs, to be blocked, can looser a bolt,
By operation panel 2111 disassembled from Rose Box 21 and from clean-up port 214 take out cleaning plate 211, a pair of cleaning plate 211 and
It is cleared up inside Rose Box 21, it is ensured that the lasting cleaning ability of Rose Box 21.
As shown in figure 4, being fixedly installed vertical scoreboard 221 in flocculation tanks 22, it is mutual that scoreboard 221, which divides flocculation tanks 22,
The flocculation chamber 223 and clear water chamber 227 of isolation；Rose Box 21 is connected to flocculation chamber 223, and the bottom position of scoreboard 221 opens up
There is intercommunicating pore 2211, scoreboard 221 is inserted with adjustable plate 222 close to a Slideslip of flocculation tanks 22, and adjustable plate 222 is slidably to gear
Firmly intercommunicating pore 2211, and the top of flocculation tanks 22 is fixedly installed addition bucket 226, addition bucket 226 is connected to flocculation chamber 223, and
The bottom end of addition bucket 226 is provided with regulating valve 2261, and the outer wall of flocculation tanks 22 is fixedly installed stirring motor 224, stirring motor
224 output shaft level penetrates in flocculation chamber 223 and is connected with agitating shaft 225.Flocculant can be added in addition bucket 226,
Polyacrylamide can be selected in flocculant, and when flocculant is entered in flocculation chamber 223, adjustable plate 222 blocks communication port, so that sewage is not
Can enter in clear water chamber 227, then stirring motor 224 drives agitating shaft 225 to rotate so that flocculant mixed with sewage it is more equal
Even, the suspended particulates in sewage are adsorbed that flocculation is agglomerating, and slidable adjustment plate 222 then up, water enters clear from intercommunicating pore 2211
Water cavity 227, and pockets of flocculate can stay in flocculation chamber 223, the later period is pulled out i.e. again to when clearing up inside flocculation tanks 22
It can.The setting of flocculation tanks 22 further reduced the suspended particulates content in sewage, improve the dirty water decontamination handles effect.
It in conjunction with Fig. 1 and Fig. 5, is connected at the apical position of clear water chamber 227 with the top of adsorption box 23, setting in adsorption box 23
There is upper layer and lower layer filter plate 231, and be fixedly installed active carbon slab 232 between two layers of filter plate 231, two layers of filter plate 231 is to active carbon
While plate 232 is played a supporting role, certain filter effect is played, and active carbon slab 232 is to the small-sized impurity in sewage
It is adsorbed, to further improve the treatment effect of sewage, is communicated with outlet pipe at the bottom position of adsorption box 23.
Fig. 1 is reviewed, is each provided with a valve 4, when pollution level is big, two between two groups of cleaning assemblies 2 and standing pond 1
A valve 4 is opened simultaneously, so that two groups of cleaning assemblies 2 simultaneously participate in sewage purification operation, is improved purification dynamics, is mitigated cleaning group
The burden of part 2, when need to wherein one group of cleaning assembly 2 is overhauled and is cleaned when, corresponding valve 4 can be closed, and
Sewage treatment works will not be interfered.
The implementation principle of the present embodiment are as follows: sewage is discharged into first to be stood in pond 1, the biggish pollution of the density contained in sewage
Object can be deposited in the promotion basket 3 of bottom of pond, and the sewage after sedimentation enters two groups of cleaning assemblies 2 simultaneously, and two groups of cleaning assemblies 2 are respective
The treatment pressure of sewage for sharing a part enables cleaning assembly 2 to continue to use, firstly, sewage enters Rose Box 21, sewage
In large-scale pollutant can be cleaned needle 213 and block, then, sewage enters in flocculation chamber 223, and suspended particulates after flocculant are added
It adsorbs agglomerating and is retained in flocculation chamber 223, for upward sliding adjustable plate 222 to open intercommunicating pore 2211, sewage enters clear water chamber
Enter in adsorption box 23 after 227, the impurity that further reduced in sewage under the action of active carbon slab 232 and aluminium sheet contains
Amount, so that sewage is after multilayer purification, water quality is greatly improved.
And when needing to clear up cleaning assembly 2, it is first shut off wherein one group of valve 4, keeps another valve 4
Connection, then the cleaning assembly 2 for having been switched off valve 4 is cleared up, valve 4 is reopened after cleaning out, and will not
The valve 4 of the cleaning assembly 2 of cleaning is closed, and is continued after repeating above-mentioned operation, the cleaning of cleaning assembly 2 be can be completed, so that clearly
It is more convenient in cleaning to manage component 2, sewage treatment works will not be interfered.When the pollutant in standing pond 1 is more,
Winding motor 33 drives hoist cable 31 to wind, and hoist cable 31, which drives, promotes the rising of basket 3, and the pollutant band of 1 bottom of pond of pond will be stood by promoting basket 3
It is dynamic to rise, the pollutant process promoted in basket 3 is completely reentered into later then and is stood in pond 1, therefore stands pond 1
Cleaning is also more convenient reliable.
This specific embodiment is only explanation of the invention, is not limitation of the present invention, those skilled in the art
Member can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but as long as at this
All by the protection of Patent Law in the scope of the claims of invention.
Claims (8)
1. a kind of municipal sewage environment protection treating device, including stand pond (1), it is characterised in that: the standing pond (1) is parallel with two
Group cleaning assembly (2), every group of cleaning assembly (2) includes the Rose Box (21) being sequentially communicated, flocculation tanks (22) and adsorption box
(23), vertical partition (212) and the cleaning plate (211) parallel with partition (212), partition are provided in Rose Box (21)
(212) there are gaps between the inner wall on top and Rose Box (21), clear up the bottom end of plate (211) and the inner wall of Rose Box (21)
Between there are gap, and clear up on the vertical side of plate (211) and be fixedly installed multiple cleaning needles perpendicular to cleaning plate (211)
(213), cleaning plate (211) is connect with Rose Box (21) vertical sliding.
2. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: the cleaning plate (211)
Two vertical sides be fixedly installed multiple cleaning needles (213), and partition (212) is towards the side of cleaning plate (211)
Multiple cleaning needles (213) are fixedly installed, the cleaning needle (213) on partition (212) and cleaning plate (211) are towards partition (212)
The fixed cleaning needle (213) in side mutually staggers.
3. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: the flocculation tanks (22)
Top is fixedly installed addition bucket (226), is fixedly installed vertical scoreboard (221) inside flocculation tanks (22), and scoreboard (221) will
Flocculation tanks (22) are divided into mutually isolated flocculation chamber (223) and clear water chamber (227), and Rose Box (21) and flocculation chamber (223) are even
Logical, the bottom of scoreboard (221) offers intercommunicating pore (2211), and the side of scoreboard (221) towards flocculation chamber (223) is provided with adjusting
Plate (222), adjustable plate (222) is parallel with scoreboard (221) and connect with flocculation tanks (22) vertical sliding, adjustable plate (222) sliding
Intercommunicating pore (2211) are blocked just when to flocculation tanks (22) bottom.
4. a kind of municipal sewage environment protection treating device according to claim 3, it is characterised in that: the flocculation tanks (22) are solid
Surely it is provided with stirring motor (224), the output shaft of stirring motor (224) is fixedly connected with agitating shaft (225), agitating shaft (225)
It protrudes into flocculation chamber (223).
5. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: in the adsorption box (23)
It is fixedly installed upper layer and lower layer filter plate (231), is folded with active carbon slab (232) between two layers of filter plate (231), clear water chamber (227)
It is connected to the top of adsorption box (23), the bottom position of adsorption box (23) is provided with outlet pipe.
6. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: standing pond (1)
Bottom is placed with promotion basket (3) compatible with pond (1) inner wall is stood, and the center position for promoting basket (3), which is fixedly connected with, to be hung
Rope (31) stands and is provided with fixed pulley (32) above pond (1), and the side for standing pond (1) is provided with winding motor (33), is wound
The output shaft end of motor (33) is fixedly connected with wind-up roll (34), and hoist cable (31) is wrapped in wind-up roll after bypassing fixed pulley (32)
(34) on circumferential surface.
7. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: cleaning assembly described in two groups
(2) valve (4) are respectively arranged with at the communicating position of standing pond (1).
8. a kind of municipal sewage environment protection treating device according to claim 1, it is characterised in that: the Rose Box (21)
Top offers clean-up port (214), and the top of cleaning plate (211) is fixedly installed operation panel (2111), and operation panel (2111) hangs down
Directly in clearing up plate (211) and being covered on clean-up port (214), it is detachable to pass through bolt between operation panel (2111) and Rose Box (21)
It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049385.3A CN109704481A (en) | 2019-01-18 | 2019-01-18 | A kind of municipal sewage environment protection treating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910049385.3A CN109704481A (en) | 2019-01-18 | 2019-01-18 | A kind of municipal sewage environment protection treating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109704481A true CN109704481A (en) | 2019-05-03 |
Family
ID=66261496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910049385.3A Pending CN109704481A (en) | 2019-01-18 | 2019-01-18 | A kind of municipal sewage environment protection treating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109704481A (en) |
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| CN113288802A (en) * | 2021-05-07 | 2021-08-24 | 闫一娇 | Nutrient solution supply device |
| CN113860660A (en) * | 2021-11-01 | 2021-12-31 | 中电建生态环境设计研究有限公司 | A reposition of redundant personnel purifier for urban domestic sewage and rainwater are handled |
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Application publication date: 20190503 |
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