CN206126929U - Vertical flow type coagulating sedimentation equipment - Google Patents
Vertical flow type coagulating sedimentation equipment Download PDFInfo
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- CN206126929U CN206126929U CN201621086071.9U CN201621086071U CN206126929U CN 206126929 U CN206126929 U CN 206126929U CN 201621086071 U CN201621086071 U CN 201621086071U CN 206126929 U CN206126929 U CN 206126929U
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Abstract
The utility model discloses a vertical flow type coagulating sedimentation equipment, including the equipment rack, separate disposing has the mixed zone that is used for sewage and flocculation drug combination in the equipment rack for mix back liquid flocculation and precipitation's settling zone, and be used for filtrating the play pool that liquid flows out, the mixed zone reaches go out the pool equally divide do not with the settling zone tube coupling, what be provided with the stirring subassembly that is used for liquid mixing stirring in the mixed zone and be used for puting in the flocculation medicament adds the medicine subassembly, be provided with the overflow weir that is used for filteing the liquid flooding in the settling zone. The utility model discloses reinforce coagulation effect, improved the clearance of sewage internal contamination thing, still strengthened sedimentation tank sludge sedimentation's effect, improved the utilization ratio of sedimentation tank. Furthermore, the utility model discloses whole portable, using -way is various, and can carry out the quick response regulation at any time, and the flexibility is high.
Description
Technical field
This utility model is related to a kind of coagulation-sedimentation equipment, by its be related to it is a kind of use during sewage disposal it is perpendicular
Streaming coagulation-sedimentation equipment, belongs to sewage treatment area.
Background technology
Coagulating sedimentation operation is the important step in sewage disposal process, by the way that the material of the difficult precipitation of difficult degradation is flocculated into
The mode that reprecipitation is removed after bulky grain completes sewage disposal.Due to including float in sewage and waste water mostly（SS）And dissolving
Property Organic substance etc., therefore coagulating sedimentation is part indispensable when waste water treatment process is designed.Coagulating sedimentation reasonable in design
Pond is to improve coagulation effect, the important leverage of Organic substance in later stage abundant degrading waste water.Had using more coagulating sedimentation at present
Dividing plate flocculation basin and mechanical two kinds of flocculation basin, the purpose of both structural forms is provided to reach preferable coagulation effect.Together
When in both coagulating basins, inorganic coagulant in coagulant（Such as PAC）All use with macromolecule organic coagulants and separate
The mode for adding, such mode is to further ensure being sufficiently mixed for medicament and Organic substance, having so as to reach removal
The purpose of machine thing.Illustrate by taking mechanical flocculation basin as an example below.
Mechanical flocculation basin is mainly mixed coagulant with Organic substance stirring using plant equipment, reaches the mesh of organics removal
, it is mainly made up of motor, stirring system and chemical feed pipe.Agitating device is stirred to water body in the presence of motor,
Simultaneously flocculant is added in water, makes impurity and dissolved organic matter in water body be thoroughly mixed to form floccule body with medicament,
Granule is set to become big and precipitate by the effect of high polymer coagulant again.Using this churned mechanically mode, can be not required to
Consider change of water quality.Simultaneously because mechanical agitation intensity is big, being sufficiently mixed for medicament and waste water can be at short notice completed, be reached
To good coagulation effect.
But above-mentioned mechanical flocculation basin is also and imperfections, however it remains shortcomings.Specifically, at present at many sewage
Reason enterprise can carry out flocculation sediment operation for cost-effective consideration in same cell body, so, waste water flow into
Precipitate floating is easily caused when entering next cell body, sedimentation effect is not only reduced but also is extremely unfavorable for that the later stage is processed.Additionally,
Due to being that flocculation sediment operation is carried out in same cell body, therefore many sewage disposal enterprises only can install a machine in cell body
Tool agitating device.But when adding organic coagulants in flocculation basin（Such as PAM）Afterwards, need to realize the fast behaviour for mixing and mixing two stages slowly
Make, this is accomplished by operator and mixing speed is controlled, and undoubtedly further increases task difficulty.
Additionally, also more of paramount importance, current coagulating sedimentation operation is required in special coagulative precipitation tank
Complete, whole operation is larger by the degree of space constraints, once it is in an emergency, it is difficult to adjustment in time, to operating process
Affect larger.
In sum, how a kind of flexible occupation mode, strong adaptability are provided, are easy to safeguard and can fully ensure that mixed
The coagulation-sedimentation equipment of solidifying sedimentation effect, just becomes those skilled in the art's problem demanding prompt solution.
The content of the invention
In view of prior art has drawbacks described above, the purpose of this utility model is to propose one kind during sewage disposal
The vertical-flow coagulation-sedimentation equipment for using.
The purpose of this utility model, will be achieved by the following technical programs：
Separate in a kind of vertical-flow coagulation-sedimentation equipment, including equipment rack, the equipment rack and be provided with for sewage
And the mixed zone of flocculation medicament mixing, for the settling zone of liquid flocculation sediment after mixing, and flow out for filtering liquid
Exhalant region, the mixed zone and the exhalant region are respectively connected with the settling zone pipeline, and in the mixed zone use is provided with
In liquid mixing stirring mixing component and for throw in flocculation medicament dosing component, be provided with the settling zone for
The downflow weir of filtering liquid flooding.
Preferably, the mixed zone includes soon mixed pond, the first mixed pond and the second mixed pond slowly slowly, the pond mixed soon and described the
One slow mixed pond pipeline connects and is provided between the two the first electromagnetic valve for control piper opening and closing, the described first slow mixed pond
Mixed pond pipeline slow with described second is connected and is provided between the two the second electromagnetic valve for control piper opening and closing.
Preferably, the mixing component includes the blender mixed soon being arranged in the fast mixed pond, is arranged at described first
Slowly mix in pond first and mix blender slowly, and be arranged at the described second slow the second slow mixed blender mixed in pond.
Preferably, the dosing component includes being arranged at the first dosing tank above the fast mixed pond, is arranged at described the
The second dosing tank above one slow mixed pond, and the 3rd dosing tank being arranged above the described second slow mixed pond.
Preferably, the settling zone is sedimentation tank, and the lower end of the sedimentation tank is provided with inverted cone cell body, the inverted cone
The bottom centre position of cell body offers the mud discharging mouth discharged for sludge after the completion of precipitation, and for controlling the mud discharging mouth
The valve mechanism of opening and closing.
Preferably, the circumferential side wall of the inverted cone cell body and the angle angle of plumb line are 15 ° ~ 35 °.
Preferably, the described second slow mixed pond is connected by the first connecting tube with the sedimentation tank pipeline, first connection
Pipe includes linkage section and overflow segment, and one end of the linkage section is fixedly connected with the described second slow side wall for mixing pond, the other end prolongs
Extend in the sedimentation tank and be fixedly connected with the overflow segment, the linkage section is obliquely installed, it mixes slowly pond with described second
The horizontal plane that one end of connection is located is higher than the horizontal plane that its one end being connected with the overflow segment is located, and the overflow segment is vertical
Arrange, its bottom is fixedly connected with the linkage section, the central axis weight of the central axis of the overflow segment and the sedimentation tank
Close.
Preferably, the downflow weir is fixedly installed in the sedimentation tank, the downflow weir include tubular central part and
It is distributed in the tubular central part surrounding, the overflow for the tubular central part to be fixedly connected with the sedimentation tank medial wall
Groove, the overflow segment is arranged at the center of the tubular central part, the central axis of the overflow segment and the sedimentation tank
Central axes.
Preferably, the exhalant region includes relaying pond and discharge bay, the relaying pond be connected with the discharge bay pipeline and
The 3rd electromagnetic valve for control piper opening and closing is provided between the two, the relaying pond is by the second connecting tube and the overflow
Weir pipeline connection, in the relaying pond filter assemblies further filtered for cleaner liquid are additionally provided with.
Preferably, the equipment rack bottom is further fixedly arranged on the moving assembly moved integrally for equipment, the shifting
Dynamic component is four universal rolling wheels for being distributed in the equipment rack corner.
Prominent effect of the present utility model is：This utility model enhances coagulation effect, improves pollutant in sewage
Clearance, settings of this utility model inside oblique communicating pipe makes the sewage in equipment define one kind from top to bottom again by lower
On flow pattern, so as to further enhancing the sedimentation effect of sludge.Meanwhile, the setting of downflow weir in this utility model is increased
The overflow area of clear liquor, allows the clear liquor can to complete overflow in the way of the cross water outlet of horizontal plane in sedimentation tank, strengthens
The effect of clarifier sludge sedimentation, improves the utilization rate of sedimentation tank.Additionally, this utility model Integral movable, not only can
The coagulating sedimentation operation of enough complete independently sewage, additionally it is possible to use as emergency set.And this utility model be different from it is conventional
Coagulation-sedimentation equipment, its each part is relatively independent, once occurring abnormal conditions in use, can be met an urgent need in time
Adjustment, to trouble unit maintenance replacing is carried out.
In sum, this utility model is rational in infrastructure, motility is high, be easy to maintenance and can effectively improve sewage
Coagulating sedimentation effect, with very high use and promotional value.
Hereinafter just accompanying drawing in conjunction with the embodiments, is described in further detail to specific embodiment of the present utility model, so that this
Utility model technical scheme is more readily understood, grasps.
Description of the drawings
Fig. 1 is overlooking the structure diagram of the present utility model；
Fig. 2 is lateral cross-sectional view of the present utility model；
Wherein：1st, equipment rack；21st, pond is mixed soon；22nd, first pond is mixed slowly；23rd, second pond is mixed slowly；31st, blender is mixed soon；
32nd, first blender is mixed slowly；33rd, second blender is mixed slowly；41st, the first dosing tank；42nd, the second dosing tank；43rd, the 3rd dosing
Case；5th, sedimentation tank；51st, inverted cone cell body；52nd, mud discharging mouth；61st, the first connecting tube；611st, linkage section；612nd, overflow segment；62nd,
Two connecting tubes；7th, downflow weir；71st, tubular central part；72nd, overflow launder；81st, pond is relayed；82nd, discharge bay；9th, universal rolling wheel.
Specific embodiment
This utility model discloses a kind of vertical-flow coagulation-sedimentation equipment used during sewage disposal.
As shown in Fig. 1 ~ Fig. 2, a kind of vertical-flow coagulation-sedimentation equipment, including equipment rack 1, divide in the equipment rack 1
Every be provided with for sewage and flocculation medicament mixing mixed zone, for the settling zone of liquid flocculation sediment after mixing, Yi Jiyong
In the exhalant region that filtering liquid flows out, the mixed zone and the exhalant region are respectively connected with the settling zone pipeline, described
It is provided with mixed zone for the mixing component of liquid mixing stirring and the dosing component for throwing in flocculation medicament, it is described heavy
The downflow weir 7 for filtering liquid flooding is provided with the area of shallow lake.
The mixed zone includes soon mixed pond 21, first mixed pond 22 and second mixed pond 23 slowly slowly, the pond 21 mixed soon with it is described
The first slow mixed pipeline of pond 22 connects and is provided between the two the first electromagnetic valve for control piper opening and closing（Do not show in figure
Go out）, described first slowly mixed pond 22 and described second slowly the mixed pipeline of pond 23 connection and the two between be provided with for control piper opening and closing
The second electromagnetic valve（Not shown in figure）.
The mixing component includes the blender 31 mixed soon being arranged in the fast mixed pond 21, is arranged at described first slow mixed
In pond 22 first mixes slowly blender 32, and the second slow mixed blender 33 being arranged in the described second slow mixed pond 23.
Herein it should be noted that the blender 31, first mixed soon mixes slowly blender 32 and the second slow puddling
The running speed for mixing machine 33 is differed, and in general, the running speed of the fast mixed blender 31 is slow more than described first mixed
Blender 32 and the described second slow mixed blender 33, more specifically running speed need what is added depending on the dosing component
Depending on the concrete composition of flocculation medicament and reaction are required.
The dosing component includes being arranged at the first dosing tank 41 of the fast mixed top of pond 21, is arranged at described first slow
Second dosing tank 42 of the top of mixed pond 22, and it is arranged at the 3rd dosing tank 43 of the described second slow mixed top of pond 23.
The settling zone is sedimentation tank 5, and the lower end of the sedimentation tank 5 is provided with inverted cone cell body 51, the inverted cone pond
The bottom centre position of body 51 offers the mud discharging mouth 52 discharged for sludge after the completion of precipitation, and for controlling the spoil disposal
The valve mechanisms of the opening and closing of mouth 52（Not shown in figure）.
The circumferential side wall of the inverted cone cell body 51 is 15 ° ~ 35 ° with the angle angle of plumb line.
In the present embodiment, the circumferential side wall of the inverted cone cell body 51 and the angle angle of plumb line are 25 °.It is such
Structure setting be in order that the sludge after the completion of precipitation can quick collecting, and concentrate and be piled up in the bottom of the taper cell body,
So as to more rapidly by the mud discharging mouth 52 complete discharge.
Described second mixes slowly pond 23 is connected by the first connecting tube 61 with the pipeline of the sedimentation tank 5, first connecting tube
61 include linkage section 611 and overflow segment 612, and the side wall in one end of the linkage section 611 mixed pond 23 slow with described second is fixed and connected
Connect, the other end is extended in the sedimentation tank 5 and is fixedly connected with the overflow segment 612, the linkage section 611 is obliquely installed,
The horizontal plane that one end that its mixed pond 23 slow with described second is connected is located is located higher than its one end being connected with the overflow segment 612
Horizontal plane, the overflow segment 612 is vertically arranged, its bottom is fixedly connected with the linkage section 611, the overflow segment 612
The central axes of central axis and the sedimentation tank 5.
The downflow weir 7 is fixedly installed in the sedimentation tank 5, and the downflow weir 7 is including tubular central part 71 and
Be distributed in the surrounding of tubular central part 71, for what the tubular central part 71 was fixedly connected with the medial wall of the sedimentation tank 5
Overflow launder 72, the overflow segment 612 is arranged at the center of the tubular central part 71, the central shaft of the overflow segment 612
The central axes of line and the sedimentation tank 5.
In the present embodiment, the cross section of the tubular central part 71 is square, and the overflow launder 72 is provided with altogether four
Root, and it is distributed in the surrounding of the tubular central part 71.The main body under vertical view state of the downflow weir 7 is in cross, in addition institute
The center that overflow segment 612 is arranged at the tubular central part 71 is stated, such structure setting can sufficiently ensure described
Cleaner liquid in sedimentation tank 5 can enter the downflow weir 7 from all directions, and be finally completed cleaner liquid discharge.
The exhalant region includes relaying pond 81 and discharge bay 82, the relaying pond 81 be connected with the discharge bay pipeline and
The 3rd electromagnetic valve for control piper opening and closing is provided between the two（Not shown in figure）, the relaying pond 81 connects by second
Adapter 62 is connected with the pipeline of the downflow weir 7, and in the relaying pond 81 filtration further filtered for cleaner liquid is additionally provided with
Component（Not shown in figure）.
The bottom of the equipment rack 1 is further fixedly arranged on the moving assembly moved integrally for equipment, in the present embodiment,
The moving assembly is four universal rolling wheels 9 for being distributed in 1 four jiaos of the equipment rack.
The course of work of the present utility model described briefly below：Treatment sewage is passed through in mixed pond 21 soon first, the first dosing
Case 41 throws in coagulated agent into the pond 21 mixed soon, and soon mixed blender 31 completes stirring.Subsequently sewage is passed into first and mixes slowly
In pond 22, the second dosing tank 42 throws in flocculation medicament into described first slowly mixed pond 22, and the first slow mixed blender 32 completes stirring.
Followed by sewage is passed into second and mixes slowly in pond 23, and the 3rd dosing tank 43 throws in flocculation medicament into described second slowly mixed pond 23,
Second mixes slowly blender 33 completes stirring.So far, whole coagulation process is finished, and subsequent sewage is passed into by the first connecting tube 61
In the sedimentation tank 5, sewage flocculation sediment in the sedimentation tank 5 again, the sludge in sewage is gradually disengaged with cleaner liquid, and sludge sinks
Enter in the inverted cone cell body 51 of the bottom of the sedimentation tank 5, cleaner liquid floats, and enters by the connecting tube 62 of downflow weir 7 and second
In relaying pond 81, cleaner liquid completes secondary filter by the filter assemblies being arranged in the relaying pond 81, and finally flows into out
Cleaner liquid outflow is completed in pond 82.
Additionally, the present embodiment has also carried out further restriction to the specification size of equipment, specifically,
Equipment overall dimensions are L3000mm × W2100m × H3200mm, process flow quantity position 4.5m3/h, the pond mixed soon
21st, the first slow mixed pond 22 and the second slow mixed pond 23 is equivalently-sized, is L700mm × W700m × H3200mm, described
The size of sedimentation tank 5 is equivalently-sized for L2100mm × W2100m × H3200mm, the relaying pond 81 and the discharge bay 82,
It is L200mm × W1050m × H3200mm.
This utility model enhances coagulation effect, improves the clearance of pollutant in sewage, and this utility model inside is tiltedly
The sewage in equipment is set to define a kind of flow pattern from top to bottom again from bottom to top to the setting of communicating pipe, so as to further
Enhance the sedimentation effect of sludge.Meanwhile, the setting of downflow weir in this utility model increases the overflow area of clear liquor, allows clear
Clear liquid can complete overflow in sedimentation tank in the way of the cross water outlet of horizontal plane, enhance the effect of clarifier sludge sedimentation,
Improve the utilization rate of sedimentation tank.Additionally, this utility model Integral movable, is not only able to the coagulating sedimentation of complete independently sewage
Operation, additionally it is possible to use as emergency set.And this utility model is different from conventional coagulation-sedimentation equipment, its each part is relative
It is independent, once occurring abnormal conditions in use, quick response regulation can be in time carried out, trouble unit is keeped in repair more
Change.In sum, this utility model is rational in infrastructure, motility is high, be easy to the coagulation that safeguard and can effectively improve sewage to sink
Shallow lake effect, with very high use and promotional value.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and
And in the case of without departing substantially from spirit and essential characteristics of the present utility model, can in other specific forms realize that this practicality is new
Type.Therefore, no matter from the point of view of which point, embodiment all should be regarded as exemplary, and is nonrestrictive, this practicality is new
The scope of type is by claims rather than described above is limited, it is intended that the equivalency fallen in claim is contained
All changes in justice and scope are included in this utility model, any reference in claim should not be considered as into restriction
Involved claim.
Moreover, it will be appreciated that although this specification is been described by according to embodiment, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of description is only that for clarity those skilled in the art should
Using description as an entirety, the technical scheme in each embodiment can also Jing it is appropriately combined, form those skilled in the art
Understandable other embodiment.
Claims (10)
1. a kind of vertical-flow coagulation-sedimentation equipment, including equipment rack（1）, it is characterised in that：The equipment rack（1）Interior separation
It is provided with for the mixed zone of sewage and flocculation medicament mixing, for the settling zone of liquid flocculation sediment after mixing, and is used for
The exhalant region that filtering liquid flows out, the mixed zone and the exhalant region are respectively connected with the settling zone pipeline, described mixed
Close the dosing component being provided with area for the mixing component of liquid mixing stirring and for throwing in flocculation medicament, the precipitation
It is provided with area for the downflow weir of filtering liquid flooding（7）.
2. vertical-flow coagulation-sedimentation equipment according to claim 1, it is characterised in that：The mixed zone includes mixed pond soon
（21）, the first slow mixed pond（22）And the second slow mixed pond（23）, the pond mixed soon（21）Pond is mixed slowly with described first（22）Pipeline connects
The first electromagnetic valve for control piper opening and closing is connect and is provided between the two, described first mixes slowly pond（22）With described second
Slowly pond is mixed（23）Pipeline connects and is provided between the two the second electromagnetic valve for control piper opening and closing.
3. vertical-flow coagulation-sedimentation equipment according to claim 2, it is characterised in that：The mixing component includes being arranged at
The pond mixed soon（21）Interior blender mixed soon（31）, it is arranged at described first and mixes pond slowly（22）Interior first mixes slowly blender
（32）, and it is arranged at the described second slow mixed pond（23）Interior second mixes slowly blender（33）.
4. vertical-flow coagulation-sedimentation equipment according to claim 2, it is characterised in that：The dosing component includes being arranged at
The pond mixed soon（21）First dosing tank of top（41）, it is arranged at described first and mixes pond slowly（22）Second dosing tank of top
（42）, and it is arranged at the described second slow mixed pond（23）3rd dosing tank of top（43）.
5. vertical-flow coagulation-sedimentation equipment according to claim 2, it is characterised in that：The settling zone is sedimentation tank（5）,
The sedimentation tank（5）Lower end be provided with inverted cone cell body（51）, the inverted cone cell body（51）Bottom centre position open up
There is the mud discharging mouth discharged for sludge after the completion of precipitation（52）, and for controlling the mud discharging mouth（52）The valve machine of opening and closing
Structure.
6. vertical-flow coagulation-sedimentation equipment according to claim 5, it is characterised in that：The inverted cone cell body（51）Week
It it is 15 ° ~ 35 ° to the angle angle of side wall and plumb line.
7. vertical-flow coagulation-sedimentation equipment according to claim 5, it is characterised in that：Described second mixes slowly pond（23）By
First connecting tube（61）With the sedimentation tank（5）Pipeline connects, first connecting tube（61）Including linkage section（611）And overflow
Section（612）, the linkage section（611）One end and the described second slow mixed pond（23）Side wall be fixedly connected, the other end is extended to
The sedimentation tank（5）It is interior and with the overflow segment（612）It is fixedly connected, the linkage section（611）It is obliquely installed, it is with described
Two mix slowly pond（23）The horizontal plane that one end of connection is located is higher than itself and the overflow segment（612）The level that one end of connection is located
Face, the overflow segment（612）Be vertically arranged, its bottom and the linkage section（611）It is fixedly connected, the overflow segment（612）'s
Central axis and the sedimentation tank（5）Central axes.
8. vertical-flow coagulation-sedimentation equipment according to claim 7, it is characterised in that：The downflow weir（7）It is fixedly installed
In the sedimentation tank（5）It is interior, the downflow weir（7）Including tubular central part（71）And it is distributed in the tubular central part（71）
Surrounding, for by the tubular central part（71）With the sedimentation tank（5）The overflow launder that medial wall is fixedly connected（72）, it is described to overflow
Stream section（612）It is arranged at the tubular central part（71）Center, the overflow segment（612）Central axis it is heavy with described
Shallow lake pond（5）Central axes.
9. vertical-flow coagulation-sedimentation equipment according to claim 1, it is characterised in that：The exhalant region includes relaying pond
（81）And discharge bay（82）, the relaying pond（81）Be connected with the discharge bay pipeline and the two between be provided with for control pipe
3rd electromagnetic valve of road opening and closing, the relaying pond（81）By the second connecting tube（62）With the downflow weir（7）Pipeline connects,
The relaying pond（81）Inside it is additionally provided with the filter assemblies further filtered for cleaner liquid.
10. vertical-flow coagulation-sedimentation equipment according to claim 1, it is characterised in that：The equipment rack（1）Bottom is also
The moving assembly moved integrally for equipment is fixedly installed, the moving assembly is distributed in the equipment rack for four（1）
The universal rolling wheel of corner（9）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621086071.9U CN206126929U (en) | 2016-09-28 | 2016-09-28 | Vertical flow type coagulating sedimentation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621086071.9U CN206126929U (en) | 2016-09-28 | 2016-09-28 | Vertical flow type coagulating sedimentation equipment |
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| Publication Number | Publication Date |
|---|---|
| CN206126929U true CN206126929U (en) | 2017-04-26 |
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ID=58572323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621086071.9U Active CN206126929U (en) | 2016-09-28 | 2016-09-28 | Vertical flow type coagulating sedimentation equipment |
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| CN (1) | CN206126929U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386689A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Pretreatment system for bed mud residual water treatment equipment |
-
2016
- 2016-09-28 CN CN201621086071.9U patent/CN206126929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110386689A (en) * | 2019-07-09 | 2019-10-29 | 中电建水环境治理技术有限公司 | Pretreatment system for bed mud residual water treatment equipment |
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