CN207562406U - Natural water conservancy diversion flocculation plant and potassium permanganate composites - Google Patents
Natural water conservancy diversion flocculation plant and potassium permanganate composites Download PDFInfo
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- CN207562406U CN207562406U CN201721526655.8U CN201721526655U CN207562406U CN 207562406 U CN207562406 U CN 207562406U CN 201721526655 U CN201721526655 U CN 201721526655U CN 207562406 U CN207562406 U CN 207562406U
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Abstract
The utility model belongs to water-treatment technology field, is related to a kind of natural water conservancy diversion flocculation plant and potassium permanganate composites.Nature water conservancy diversion flocculation plant provided by the utility model, including frame and the level-one flocculation zone being arranged in frame and two level flocculation zone;The bottom of level-one flocculation zone is communicated with inhalant region, is communicated at the top of the top of level-one flocculation zone and two level flocculation zone, the bottom of two level flocculation zone is communicated with exhalant region;Efficient micro swirl flocculation ball is equipped in level-one flocculation zone and two level flocculation zone.The utility model has flocculating effect good, saves space, the characteristics of easy for installation, low energy consumption, equipment investment and low maintenance cost, effectively alleviates the power consumption brought in the prior art using electric blender, the problems such as maintenance is big, construction and installation are inconvenient.
Description
Technical field
The utility model belongs to water-treatment technology field, is related to the equipment for sewage disposal, and in particular to a kind of nature
Water conservancy diversion flocculation plant and potassium permanganate composites.
Background technology
Water is very valuable natural resources, with the development of modern industry, the continuous expansion of city size, water consumption and
The phenomenon that wastewater flow rate is continuously increased, shortage of water resources getting worse, using water wisely are to alleviate the more real method of this problem, and
Reuse is an effective Measures of Saving Water sewage reaches reclaimed wastewater reuse standard after being handled to middle water station after.At present, middle water
Treatment for Reuse is broadly divided into three kinds of common technologies, is coagulation and filtering, biological treatment precipitation and UF membrane respectively, before therein
Two kinds are current more common technologies.The sewerage disposing maturation process to grow up in recent years is:Raw water enters regulating reservoir, leads to
It crosses pump and squeezes into potassium permanganate composites, potassium permanganate composites are from V-type filter tank is flowed into, water subsequently into advanced treating or directly in progress
Reuse.
Wherein, potassium permanganate composites are a kind of compact, efficient, flexible New foul water disposal facilities, usually by preceding mixed
Solidifying pond, flocculation tank and efficient sedimentation tank and other water distribution pipeline canals composition, using mode of building jointly, collection coagulation, flocculation, sludge
Cycle, precipitation are with isolation technics in one.
Existing flocculation tank setting guide shell and flash mixer, for sewage and the rapid flocculation of flocculant, wadding
Sewage after solidifying imports efficient sedimentation tank below, and complete in sedimentation basin water body and flocculant, returned sludge it is further
Contact.Flocculation is to make the raw water containing micro- wadding grain under external force, and contact with each other collision, to form the process of more big flocculating body.
The basic demand of flocculation process is that sewage after mixing, macroscopic big closely knit wadding is formed by flocculation apparatus with medicament
Solidifying body.In treatment process, the quality of flocculating effect directly determines the quality of wastewater treatment efficiency, with effluent quality standard
It is gradually increased, the requirement to the facility that flocculates is also higher and higher.
Flocculation mode is commonly divided into waterpower mixing and mechanical mixture.And the flocculation in potassium permanganate composites traditional at present
Reaction tank using the mode of mechanical mixture, i.e., is flocculated mostly using blender machinery.The advantages of machinery flocculation is head damage
It loses small, goes slick, and shortcoming is construction and installation trouble, also with certain maintenance of machine amount, needs to select advanced, reliable
Mechanical equipment.And waterpower flocculation is flocculated using natural waterpower, has easy for installation, saving occupation of land, saves the energy
The advantages that, but it is actually rare for the flocculated research of waterpower and relevant report at present.
In consideration of it, special propose the utility model.
Utility model content
The first of the utility model is designed to provide a kind of natural water conservancy diversion flocculation plant, has and saves space, installation side
Just, the characteristics of low energy consumption, equipment investment and low maintenance cost is effectively alleviated and is brought in the prior art using electric blender
Power consumption, the problems such as maintenance is big, construction and installation are inconvenient.
The second of the utility model is designed to provide a kind of potassium permanganate composites, in high density precipitation described in setting
Natural water conservancy diversion flocculation plant, occupation of land can be saved, easy for installation, low energy consumption, stable and reliable operation, advantageously reduce equipment throwing
Money and maintenance cost.
To achieve the above object, the technical solution adopted in the utility model is:
One side according to the present utility model, the utility model provides a kind of natural water conservancy diversion flocculation plant, including frame
With the level-one flocculation zone and two level flocculation zone being arranged in the frame;
The bottom of the level-one flocculation zone is communicated with inhalant region, the top of the level-one flocculation zone and the top of two level flocculation zone
Portion communicates, and the bottom of the two level flocculation zone is communicated with exhalant region;
Efficient micro swirl flocculation ball is equipped in the level-one flocculation zone and two level flocculation zone.
As further preferred technical solution, the frame includes upper lateral frame, middle transverse bracket, lower lateral frame, centre
Perpendicular support and outside perpendicular support;
The upper lateral frame and middle transverse bracket are two closed hoops, be respectively equipped in two closed hoops it is multiple with it is upper
The supporting rack that lateral frame is connected with middle transverse bracket;
The intermediate perpendicular support is arranged between the upper lateral frame and lower lateral frame;The outside perpendicular support is arranged on institute
It states between lateral frame and lower lateral frame.
As further preferred technical solution, the upper lateral frame and middle transverse bracket generally rectangle or square are tied
Structure.
As further preferred technical solution, the intermediate perpendicular support is the component of four pieces of closings, and the component is by described in
Level-one flocculation zone and two level flocculation zone separate.
As further preferred technical solution, water inlet pipe is equipped in the inhalant region, the top of the water inlet pipe is equipped with band
There is the first deflector of guide curve surface, the lower section of first deflector is equipped with second be adapted with first deflector and leads
Flowing plate.
As further preferred technical solution, water conservancy diversion weir plate is equipped in the exhalant region.
As further preferred technical solution, the efficient micro swirl flocculation ball accounts for level-one flocculation zone and two level flocculation zone
Percent by volume is 50%~90%.
As further preferred technical solution, a diameter of 100~300mm of the efficient micro swirl flocculation ball, on ball
A diameter of 10~40mm of the through-hole of cloth.
Other side according to the present utility model, the utility model also provides a kind of potassium permanganate composites, including above-mentioned
Natural water conservancy diversion flocculation plant.
As further preferred technical solution, the potassium permanganate composites include be sequentially communicated coagulating basin, flocculation basin and
Sedimentation basin, the nature water conservancy diversion flocculation plant are arranged on the bottom of the flocculation basin.
Compared with prior art, the beneficial effects of the utility model are:
(1), the utility model sets nature water conservancy diversion flocculation plant in potassium permanganate composites, which utilizes nature
Waterpower flocculate, and efficient micro swirl flocculation ball is rationally set in level-one flocculation zone and two level flocculation zone, generate it is micro-
Vortex reaction, carries out contact flocculation.When flow passes through a large amount of holes of efficient micro swirl flocculation ball wall surface, formed countless small
Whirlpool is conducive to the migration of fine particle in water and collision cohesion, improves flocculation reaction efficiency;Again since efficient micro swirl flocculates
Ball is hollow shell, and internal flow velocity is small, and the flco (alumen ustum) of a large amount of greater particle sizes accumulates suspension in efficient micro swirl flocculation ball
Yu Shuizhong generates suction-operated to tiny flco, that is, forms contact flocculation;In addition efficient micro swirl flocculation ball can also play anti-
The short stream of sealing stream promotes uniform fluid flow to be distributed and improve the effect of current gradient.
(2), simple in structure, pattern is reasonable, easy to process and installation, stable, reliable.
(3), space is saved, equipment investment can be saved significantly on, reduces maintenance frequency, reduces maintenance cost, low energy consumption, into
This is low, and flocculating effect is good, application easy to spread.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
Under the premise of labour, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the natural water conservancy diversion flocculation plant structure diagram that the utility model embodiment provides;
Fig. 2 is the A-A diagrammatic cross-sections of Fig. 1;
Fig. 3 is the inhalant region structure diagram that the utility model embodiment provides.
Icon:1- level-one flocculation zones;2- two level flocculation zones;3- inhalant regions;The upper lateral frames of 4-;5- middle transverse brackets;
Perpendicular support among 6-;Perpendicular support on the outside of 7-;Lateral frame under 8-;9- flocculation basins;10- water inlet pipes;11- exhalant regions;12-
First deflector;The second deflectors of 13-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below, it is clear that described embodiment is this
Utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, the common skill in this field
Art personnel all other embodiments obtained without making creative work belong to the utility model protection
Range.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", "left", "right",
The orientation or position relationship of the instructions such as " top ", " bottom ", " vertical ", " level ", " interior ", " outer " be based on orientation shown in the drawings or
Position relationship is for only for ease of description the utility model and simplifies description rather than instruction or imply signified device or member
Part must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.
In addition, term " first ", " second ", " third " are only used for description purpose, and it is not intended that instruction or implying relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection;Can be mechanical connection or electrical connection;It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
With reference to specific embodiments and the drawings, the utility model is described in further detail.
Embodiment one
As depicted in figs. 1 and 2, the present embodiment provides a kind of natural water conservancy diversion flocculation plants, including frame and are arranged on described
Level-one flocculation zone 1 and two level flocculation zone 2 in frame;
The bottom of the level-one flocculation zone 1 is communicated with inhalant region 3, top and the two level flocculation zone 2 of the level-one flocculation zone 1
Top communicate, the bottom of the two level flocculation zone 2 is communicated with exhalant region 11;
Efficient micro swirl flocculation ball is equipped in the level-one flocculation zone 1 and two level flocculation zone 2.
The natural water conservancy diversion flocculation plant of the utility model includes frame, and level-one flocculation zone and two level are provided in lower portion
Flocculation zone, flow or reaction solution are introduced into from inhalant region to level-one flocculation zone, turn down enter to two level flocculation zone then up, from
Two level flocculation zone is turned over by down enters to exhalant region, the efficient micro swirl flocculation ball in level-one flocculation zone and two level flocculation zone
It under effect, is fully flocculated, completes flocculation reaction.
The utility model is simple in structure, easy to operate, is easily installed, and low energy consumption, and manufacture is at low cost;Pass through efficient micro swirl
The addition of flocculation ball can make medicament and flco be sufficiently mixed and will not destroy established big flocculating body so that flocculation reaction is abundant
Uniformly, ensure stable effluent quality.
Optionally, level-one flocculation zone 1 is located at the middle part of lower portion, and two level flocculation zone 2 is located at the surrounding of level-one flocculation zone 1
Or both ends.
Optionally, level-one flocculation zone 1 accounts for the 1/4~1/2 of entire lower portion volume;Two level flocculation zone 2 accounts for entire frame
The 1/2~3/4 of internal volume.
The setting of suitable level-one flocculation zone and the size and location of two level flocculation zone helps to enhance flocculating effect, carry
The stability of high device operation, convenient for construction, reduces space, saves cost.
On above-described embodiment basis, further, the frame includes upper lateral frame 4, middle transverse bracket 5, lower horizontal stroke
Stent 8, intermediate perpendicular support 6 and outside perpendicular support 7;
The upper lateral frame 4 and middle transverse bracket 5 are two closed hoop structures, are respectively equipped in two closed hoops more
A supporting rack being connect with upper lateral frame 4 and middle transverse bracket 5;
The intermediate perpendicular support 6 is arranged between the upper lateral frame 4 and lower lateral frame 8;The outside perpendicular support 7 is set
On described between lateral frame 4 and lower lateral frame 8.
Efficient micro swirl flocculation ball in the utility model between upper lateral frame and middle transverse bracket, upper lateral frame and
Multiple supporting racks are additionally provided in middle transverse bracket, the effect of supporting rack is support and the efficient micro swirl flocculation ball of sealing.This practicality
Upper lateral frame and middle transverse bracket in novel are integrally the cyclic structure of closure, and be respectively equipped among the two it is multiple with
The stent of cyclic structure connects to support the supporting rack with the efficient micro swirl flocculation ball of sealing.
In this way, corresponding stent and supporting rack can be linked together by way of welding or being threadedly coupled, tie
Structure is simple, easy to operate, easy for construction convenient for manufacture, with good investment, adaptable, and flocculating effect is good.
On above-described embodiment basis, further, the upper lateral frame 4 and middle transverse bracket 5 are generally rectangular
Shape or square structure.
On above-described embodiment basis, further, components of the intermediate perpendicular support 6 for four pieces of closings, the structure
Part separates the level-one flocculation zone 1 and two level flocculation zone 2.
It is understood that the upper lateral frame and middle transverse bracket in the utility model are preferably closed rectangle or pros
Shape, but it is not limited to this, can also be round or other irregular shapes etc..
Level-one flocculation zone and two level flocculation zone are separated using intermediate perpendicular support in the utility model, optionally, one
Baffle plate or deflector can also be set between grade flocculation zone and two level flocculation zone, flow is more smoothly introduced to two level flocculation
In area.It is possible to further set the upper baffle plate with corner on the top of level-one flocculation zone and two level flocculation zone.
As shown in figure 3, on above-described embodiment basis, further, water inlet pipe 10, institute are equipped in the inhalant region 3
The top for stating water inlet pipe 10 is equipped with the first deflector 12 with guide curve surface, and the lower section of first deflector 12 is equipped with and institute
State the second adaptable deflector 13 of the first deflector 12.
Optionally, the first deflector 12 is equipped with the guide curve surface being recessed upwards, and the second deflector 13 is equipped with to lower recess
Guide curve surface.
Optionally, it is connected between the first deflector 12 and the second deflector 13 by more vertical reinforcements.
Optionally, the first deflector 12 is connect by hickey with water inlet pipe 10, the second deflector 13 by bolt with
3 bottom of inhalant region connects.
In this way, by the setting of above-mentioned first deflector and the second deflector in inhalant region, can play dissipation kinetic energy,
The effect of stationary flow improves the uniformity of water distribution or cloth liquid, is conducive to add the waterpower mixing of medicament, while can avoid into water
There is the reliability of vortex region, enhancing water inlet or feed liquor in area, and stable structure is reliable, and installation is easily manufactured, realizes effective water distribution
Or cloth liquid, effective flocculated effect.
On above-described embodiment basis, further, water conservancy diversion weir plate is equipped in the exhalant region 11.
Optionally, water conservancy diversion weir plate is rectangular guiding weir plate.
Install water conservancy diversion weir plate additional before the effluent weir of exhalant region, and between the holding centainly of the inner wall of the water conservancy diversion weir plate and exhalant region
Away from raising outlet effect is conveniently operated, can effectively prevent the short stream of flocculation zone, improves flocculating effect.
Optionally, level-one flocculation zone 1 and two level flocculation zone 2 are connect with flusher, for efficient micro swirl flocculation ball
In due course flushing is carried out, the generation caused by avoiding longtime running phenomena such as sludgd deposition, blocking.
On above-described embodiment basis, further, the efficient micro swirl flocculation ball accounts for level-one flocculation zone 1 and two level
The percent by volume of flocculation zone 2 is 50%~90%.
Preferably, efficient micro swirl flocculation ball account for the percent by volume of level-one flocculation zone 1 and two level flocculation zone 2 for 60%~
85%;
Preferably, efficient micro swirl flocculation ball account for the percent by volume of level-one flocculation zone 1 and two level flocculation zone 2 for 70%~
80%.
Flocculation ball add quantity be not easy excessively to be not easy to it is very few, it is very few to influence flocculating effect, reduce effluent characteristics, and
Excessively it will cause wastes, increase production cost.The utility model is on the basis of test of many times, it is determined that efficient micro swirl wadding
The dosage of solidifying ball both accounts for the 50%~90% of percent by volume in the dosage of level-one flocculation zone and two level flocculation zone
In the case of, it can be while efficient flocculating reaction be ensured so that operation is more stable, and coagulated agent utilization rate higher saves
Cost obtains the environmental economical profit become apparent.
On above-described embodiment basis, further, a diameter of 100~300mm of the efficient micro swirl flocculation ball,
A diameter of 10~40mm of uniformly distributed through-hole on ball.
Efficient micro swirl flocculation ball is generally porous hollow ball structure, due to passing repeatedly through the through-hole on sphere, flow
It is middle to form a large amount of small vortexs, and under water impact effect, sphere can generate small rotation, be conducive to avoid deposition
Or the generation by floating material clogging;Simultaneously add it is non-directional, without be fixedly mounted, it is simple to operate.Ordinary circumstance
Under, the percent opening and opening diameter of micro swirl flocculation ball can be determined according to influent quality and process requirements.Micro swirl flocculation ball one
As be made using ABS plastic material, while adsorptivity raw material before a small amount of increasing can be added, wall thickness by Structural Strength Design Lai
It determines.
For the ease of constructing and safeguarding, the utility model has added identical size in level-one flocculation zone and two level flocculation zone
The efficient micro swirl flocculation ball of structure.In a specific embodiment, optionally, the diameter of efficient micro swirl flocculation ball
(outer diameter) is 100mm, 150mm, 300mm, 250mm or 300mm, a diameter of 10mm of equally distributed through-hole in flocculation ball,
20mm, 26mm, 28mm, 30mm, 34mm, 38mm or 40mm;Percent opening is 40%, 42%, 47%, 48%, 50% or 54%.This
Sample, the efficient micro swirl flocculation ball under above structure size are conducive to the cohesion of Creating High Efficiency and flocculation hydraulics, contracting
The short flocculation reaction time ensures effluent characteristics.
Meanwhile the efficient micro swirl flocculation ball of the utility model have it is non-toxic, corrosion-resistant, anti-aging, service life is long,
Service life, maintenance management was convenient, and its insensitive i.e. adaptation energy of various index reacting conditions to water quality, water temperature etc. up to many decades
The characteristics of power is strong is conducive to increase collision, the cohesion rate of particle, reduces reagent consumption, realize highly effective coagulation.
The present embodiment also provides a kind of potassium permanganate composites, including above-mentioned natural water conservancy diversion flocculation plant.
On above-described embodiment basis, further, the potassium permanganate composites include the coagulating basin being sequentially communicated, wadding
Solidifying pond 9 and sedimentation basin, the nature water conservancy diversion flocculation plant are arranged on the bottom of the flocculation basin 9.
It should be noted that the potassium permanganate composites key in the utility model is to include in flocculation basin this practicality newly
The natural water conservancy diversion flocculation plant of type, structure type commonly used in the art can be used in other coagulating basins and sedimentation basin etc..
Optionally, 9 bottom of flocculation basin be equipped with sludge quick drain device or blow-off pipe, for periodically discharge sludge or other
Impurity.
Optionally, 9 bottom of flocculation basin is equipped with evacuated tube, and evacuated tube is equipped with emptying valve;It is convenient to overhaul, when needing maintenance
Emptying valve is opened to empty by evacuated tube.
During use, pre-add one or more medicament in coagulating basin, sewage from coagulating basin come out after by water inlet pipe into
Enter the inhalant region to flocculation basin, enter back into level-one flocculation zone, turn down enter to two level flocculation zone then up, flocculate from two level
Area is turned over by down and enters to exhalant region, under the action of the efficient micro swirl flocculation ball in level-one flocculation zone and two level flocculation zone,
It is fully flocculated, completes flocculation reaction.
The nature water conservancy diversion flocculation plant is set in flocculation basin pond body, and general frame is fixed on flocculation basin bottom, while with
Frame sets efficient micro swirl flocculation ball for carrier, is put into flocculation basin in groups after combination.It flocculates in level-one flocculation zone and two level
Efficient micro swirl flocculation ball in area is rationally set, micro swirl reaction is generated, carries out contact flocculation.When flow passes through highly dense micro swirl
During a large amount of holes of flocculation ball wall surface, countless small whirlpools are formed, is conducive to the migration of fine particle in water and collision cohesion, carries
High flocculation reaction efficiency;Again since highly dense micro swirl flocculation ball is hollow shell, internal flow velocity is small, the flco of a large amount of greater particle sizes
(alumen ustum) is accumulated in highly dense micro swirl flocculation ball and is suspended in water, and suction-operated is generated to tiny flco, that is, forms contact wadding
It is solidifying;In addition highly dense micro swirl flocculation ball can also prevent the short stream of flow, the effect for promoting uniform fluid flow distribution, improving current gradient.
Finally it should be noted that:The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System;Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand:It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement;And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of nature water conservancy diversion flocculation plant, which is characterized in that including frame and the level-one flocculation zone being arranged in the frame
With two level flocculation zone;
The bottom of the level-one flocculation zone is communicated with inhalant region, the top of the level-one flocculation zone and the top phase of two level flocculation zone
Logical, the bottom of the two level flocculation zone is communicated with exhalant region;
Efficient micro swirl flocculation ball is equipped in the level-one flocculation zone and two level flocculation zone.
2. nature water conservancy diversion flocculation plant according to claim 1, which is characterized in that the frame include upper lateral frame, in
Between lateral frame, lower lateral frame, intermediate perpendicular support and outside perpendicular support;
The upper lateral frame and middle transverse bracket are two closed hoops, and multiple and upper horizontal branch is respectively equipped in two closed hoops
The supporting rack that frame is connected with middle transverse bracket;
The intermediate perpendicular support is arranged between the upper lateral frame and lower lateral frame;The outside perpendicular support is arranged on described
Between lateral frame and lower lateral frame.
3. nature water conservancy diversion flocculation plant according to claim 2, which is characterized in that the upper lateral frame and middle transverse bracket
Generally rectangle or square structure.
4. nature water conservancy diversion flocculation plant according to claim 2, which is characterized in that the intermediate perpendicular support is four pieces of closings
Component, the component separates the level-one flocculation zone and two level flocculation zone.
5. nature water conservancy diversion flocculation plant according to claim 1, which is characterized in that water inlet pipe is equipped in the inhalant region,
The top of the water inlet pipe is equipped with the first deflector with guide curve surface, and the lower section of first deflector is equipped with and described the
The second deflector that one deflector is adapted.
6. nature water conservancy diversion flocculation plant according to claim 1, which is characterized in that weir is equipped in the exhalant region
Plate.
7. nature water conservancy diversion flocculation plant according to claim 1, which is characterized in that the efficient micro swirl flocculation ball accounts for one
The percent by volume of grade flocculation zone and two level flocculation zone is 50%~90%.
8. according to claim 1~7 any one of them nature water conservancy diversion flocculation plant, which is characterized in that the efficient micro swirl
A diameter of 100~300mm of flocculation ball, a diameter of 10~40mm of uniformly distributed through-hole on ball.
9. a kind of potassium permanganate composites, which is characterized in that flocculate and fill including claim 1~8 any one of them nature water conservancy diversion
It puts.
10. potassium permanganate composites according to claim 9, which is characterized in that the potassium permanganate composites include connecting successively
Logical coagulating basin, flocculation basin and sedimentation basin, the nature water conservancy diversion flocculation plant are arranged on the bottom of the flocculation basin.
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CN201721526655.8U CN207562406U (en) | 2017-11-15 | 2017-11-15 | Natural water conservancy diversion flocculation plant and potassium permanganate composites |
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CN201721526655.8U CN207562406U (en) | 2017-11-15 | 2017-11-15 | Natural water conservancy diversion flocculation plant and potassium permanganate composites |
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Publication Number | Publication Date |
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