CN108178271A - Vertical sedimentation basin with reflux in sludge - Google Patents
Vertical sedimentation basin with reflux in sludge Download PDFInfo
- Publication number
- CN108178271A CN108178271A CN201810171960.2A CN201810171960A CN108178271A CN 108178271 A CN108178271 A CN 108178271A CN 201810171960 A CN201810171960 A CN 201810171960A CN 108178271 A CN108178271 A CN 108178271A
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- China
- Prior art keywords
- sludge
- sedimentation basin
- return duct
- compressed air
- reflecting plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000010802 sludge Substances 0.000 title claims abstract description 94
- 238000004062 sedimentation Methods 0.000 title claims abstract description 58
- 238000010992 reflux Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000007667 floating Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 11
- 238000007792 addition Methods 0.000 description 14
- 229920002401 polyacrylamide Polymers 0.000 description 12
- 238000007599 discharging Methods 0.000 description 9
- 239000002351 wastewater Substances 0.000 description 8
- 235000006226 Areca catechu Nutrition 0.000 description 7
- 244000080767 Areca catechu Species 0.000 description 7
- 239000007900 aqueous suspension Substances 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 6
- 238000001556 precipitation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000945 filler Substances 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention provides a kind of vertical sedimentation basins with reflux in sludge, return duct in central draft tube and sludge is provided in sedimentation basin, in the sludge in the centrally disposed guide shell of return duct, the top of return duct is less than 20 120cm of water inlet bottom of the tube in the sludge；The lower end of central draft tube is provided with taper reflecting plate, and the top cone mouth of the taper reflecting plate is connect with the bottom end of return duct in sludge to be communicated；The lower part setting compressed air of the taper reflecting plate discharges pipe, and the other end of compressed air release pipe is connected with sedimentation basin external compression air-source.The application device can significantly mitigate Mud up-floating phenomenon, and in the case where dosage is equivalent, the device effluent quality using return duct in compressed air and sludge is more excellent；In the case where suspended matter removal effect is essentially identical, adding dose reduces by 40% or so.
Description
Technical field
The present invention relates to the technical field of sewage disposal, particularly, be related to it is a kind of in sludge reflux it is vertical-flow
Sedimentation basin.
Background technology
Vertical sedimentation basin is because the advantages such as its floor space is small, deposition efficiency is high, management is simple, spoil disposal facilitates are middle-size and small-size
Sewage treatment plant is widely used.But for small-sized vertical sedimentation tank, if spoil disposal is not in time, it can generate on serious sludge
Emerge as sludge is caused to be lost in from water outlet, influences the water quality of water outlet.The reason of Mud up-floating, is typically due to organic in waste water
Object is more, when spoil disposal interval time is longer, microorganism breathe wherein or denitrification generate carbon dioxide, carbon dioxide and
Floc particle adsorbs, and causes Mud up-floating.
High density sedimentation with sludge reflux is excellent with its pharmaceutical use is low, outlet effect is good, sludge yield is low
Gesture is generally used, and principle is using the sludge reflux after precipitation to water inlet, promotes coagulation using sludge, flocculated
Journey increases the density and size of the floc particle of formation, improves the speed of particle sedimentation, and outlet effect is more preferable.It is vertical-flow at present
Sedimentation basin generally uses pump to carry out sludge reflux to achieve the effect that similar high density precipitates, but energy consumption is higher, and turn of impeller
It is dynamic to destroy sludge flocculation structure, influence treatment effect.
Therefore, it is necessary to one kind can effectively prevent Mud up-floating, while can also reduce the processing scheme of dosing.
Invention content
Present invention aims at a kind of vertical sedimentation basin with reflux in sludge is provided, to solve vertical-flow precipitation
The technical issues of Mud up-floating and big dosing in pond.
To achieve the above object, it the present invention provides a kind of vertical sedimentation basin with reflux in sludge, is precipitating
It is provided with return duct in central draft tube and sludge in pond, in the sludge in the centrally disposed guide shell of return duct, the dirt
The top of return duct is less than water inlet bottom of the tube 20-120cm in mud；Back taper reflection is provided with below the central draft tube
Plate, the top cone mouth of the taper reflecting plate are connect with the bottom end opening of return duct in sludge；The lower part of the taper reflecting plate
Compressed air is set to discharge pipe, compressed air release pipe is connected with sedimentation basin external compression air-source.
Preferably, the lower part setting compressed air of taper reflecting plate discharges pipe and includes：The central axes face of taper reflecting plate
The opening of compressed air release pipe or the lower part of taper reflecting plate are run through by the opening of compressed air release pipe.
Preferably, the central draft tube is vertically arranged round or regular polygon cylinder.
Preferably, the body centre axis of the central draft tube is overlapped with the central axis of sedimentation basin.
Preferably, the sedimentation basin body upper part is round or regular polygon cylinder, and lower part is cone bucket shape structure, cone bucket
Shape structural base sets spoil disposal pipeline.
Preferably, deflector is set in the guide shell in the sludge above return duct.
The invention has the advantages that：
The present invention in central draft tube by setting return duct in sludge so that the sludge in sludge buffering area can return
It flows to water inlet to be mixed with water inlet, increases the density and size of floc particle, simultaneously as the sludge in buffering area is continuous
By stripping reflux, the micro-bubble on mud granule is desorbed with mud granule, so as to effectively slow down the On The Floating of sludge.
Also, less than water inlet bottom of the tube 20-120cm (as at least 20- below liquid level at the top of return duct in the application sludge
120cm), then water inlet can contact on water inlet buffering area top with the sludge of reflux, and the bubble of return duct rises shape in sludge
Into stirring action, returned sludge and water inlet is made more fully to contact, can also increase spiral shape water conservancy diversion at the top of return duct in sludge
Plate is to promote the stirring action of bubble；On the one hand make to be uniformly mixed into water and returned sludge, on the other hand can make returned sludge
Degassing, is conducive to prevent Mud up-floating.Stripping tube is mainly used for spoil disposal, the application in vertical sedimentation basin in the prior art
The structure for improving vertical sedimentation basin has reached sludge reflux, sludge deaerates, the triple role of muddy water mixing, realizes existing perpendicular
The purpose that sedimentation tank can not be realized.
Returned sludge will make, into the flco density bigger of water and more coarse, to be easy to settle, vertical sedimentation basin is because dirty
Mud flows back to form high density Sunk-fund effect, and sedimentation basin entirety solid-liquid separation effect is more preferable, and the pharmaceutical quantities used are lower.
Third, present solution provides simple, low cost a high density to precipitate scheme：Conventional high density precipitation all needs
A special pump part is wanted for returned sludge and the mixing of water inlet, but the present invention by stripping reflux pipe and reflecting plate, in
This part is omitted in the combination of heart cylinder, and structure is more simple, and operation is more easy, is suitable for small-scale sewage processing.
Fourth, this programme can mitigate Mud up-floating problem：This programme compressed air can be provided directly in sludge bucket, air lift
Reflux bottom of the tube is connected with reflecting plate.The absorption of gas and sludge is the reason of causing Mud up-floating, passes through sludge reflux, sludge
The sludge of storage area is in continuous shuttling movement, and in uphill process of the sludge in sludge in return duct, due to the stirring of gas
Effect, gas is desorbed with sludge, so as to mitigate the rising phenomenon of sludge.
And the compressed air of existing literature provides in sludge in return duct, can not form the perturbation action to sludge completely,
Caking sludge can not be smashed, be more likely formed Mud up-floating.
Therefore, the application device can significantly mitigate Mud up-floating phenomenon, empty using compression in the case where dosage is equivalent
The device effluent quality of return duct is more excellent in gas and sludge；In the case where suspended matter removal effect is essentially identical, dose is added
40% or so can be reduced.
Other than objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is described in further detail.
Description of the drawings
The attached drawing for forming the part of the application is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the preferred embodiment of the present invention；
Wherein, 1, sedimentation basin, 2, central draft tube, 3, return duct in sludge, 4, reflecting plate, 5, compressed air source, 6, pressure
Contracting air releasing tube is open, 7, outlet pipe, 8, water inlet pipe, 9, spiral deflector, 10, PAC chemical feeding points, 11, PAM chemical feeding points, 12,
Mud discharging mouth, 13, overflow launder, 14, inclined tube filler.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Referring to Fig. 1, this application discloses a kind of vertical sedimentation basins with sludge refluxing apparatus, are set in sedimentation basin 1
There is return duct 3 in central draft tube 2 and sludge, vertical sedimentation basin is divided into water buffering area, settling zone by central draft tube
With sludge memory block, central tube interior zone is water inlet buffering area, and settling zone is more than reflecting plate precipitates pool area, sewage sludge storage
Area is sedimentation basin reflecting plate region below.
The central axes of return duct 3 are overlapped with the central axes of central draft tube 2 in the sludge, return duct 3 in the sludge
Top be less than 8 bottom 20-120cm of water inlet pipe；Water inlet can contact on water inlet buffering area top with the sludge of reflux in this way, and
The bubble of return duct rises to form stirring action in sludge, makes flco density bigger and build into water more coarse, is easy to heavy
Drop.Can also spiral deflector 9 be set in the guide shell in sludge above return duct, make stirring more abundant.Spiral stream guidance
On the inner wall of 9 centrally disposed guide shell 2 of plate, the top of return duct 3 in sludge assists return duct 3 in agitation sludge to push up
The sludge in portion.
The lower end of the central draft tube 3 can be set there are one horn mouth, and the reflecting plate 4 of taper, institute is arranged below in horn mouth
The cone mouth of taper reflecting plate is stated towards the bottom end opening of return duct in sludge 3 so that compressed air is more easy to enter in sludge and flow back
Pipe；The lower part of the taper reflecting plate is communicated with compressed air release tube opening 6, and compressed air discharges the other end and precipitation of pipe
Pond external compression air-source 5 is connected, and the compressed air of external source then can discharge pipe by compressed air and enter return duct in sludge
It is internal.
The lower part of taper reflecting plate 4 is communicated with compressed air release tube opening 6 including at least two forms：Taper reflecting plate
The opening of lower part face compressed air release pipe or the lower part of taper reflecting plate passed through by the opening of compressed air release pipe
It wears.Kind mode causes compressed air to be directly entered return duct in sludge afterwards, and effect is more concentrated.
The central draft tube can be vertically arranged round or regular polygon cylinder, can select according to actual needs.Institute
The body centre axis for stating central draft tube is overlapped with the central axis of sedimentation basin, drives the sludge reflux in entire sedimentation basin.
Foam breaking nozzle, foam breaking nozzle connection running water pipe are set at the top of central draft tube, and tap water forms high speed water by nozzle
Pearl inhibits foam.
In addition, can set overflow launder 13 at the top of sedimentation basin, overflow launder is connect with outlet pipe 7.It is set in vertical sedimentation basin
Inclined tube is put, inclined tube filler 14 is external a diameter of 80mm regular hexagons inclined tube filler.
Sedimentation basin body upper part is round or regular polygon cylinder, and lower part is cone bucket shape structure, cone bucket shape structural base
Set mud discharging mouth 12 and spoil disposal pipeline and when exclude the sludge of deposition.
It is specific embodiment below.
Embodiment one,
The central draft tube of regular hexagon cylinder in sedimentation basin is set, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 50cm of water inlet pipe in sludge.One end of compressed air release pipe and sedimentation basin external pressure
Contracting air-source is connected, the lower part of one end face taper reflecting plate.
The pretreatment of betel nut waste water, PAC (Polyaluminium Chloride, polymerization are carried out using this vertical sedimentation tank
Aluminium chloride) addition 200mg/L, PAM (Polyacrylamide, polyacrylamide) addition 10mg/L.Part or all of PAM
It adds at the top of central draft tube 2, PAM chemical feeding points 11 are then located at the top of central draft tube 2, the top of spiral deflector 9.
PAC chemical feeding points 10 are located at the entry position of water inlet pipe 8.
In the case of using compressed air, going out aqueous suspension can control in 100mg/L hereinafter, sludge discharging period 4h, does not send out
Raw apparent Mud up-floating phenomenon.
Embodiment two,
The central draft tube of circular cylinder body in sedimentation basin is set, installs in sludge and flows back on the central axes of central draft tube
It manages, the top of return duct is less than 8 bottom 80cm of water inlet pipe in sludge.One end of compressed air release pipe and sedimentation basin external compression are empty
Air source is connected, and the lower part of taper reflecting plate is run through in one end.
The pretreatment of betel nut waste water, PAC additions 200mg/L, PAM addition 10mg/ are carried out using this vertical sedimentation tank
L。
In the case of using compressed air, going out aqueous suspension can control in 90mg/L hereinafter, sludge discharging period 4h, still not
Apparent Mud up-floating phenomenon occurs.
Embodiment three,
The central draft tube of regular pentagon cylinder in sedimentation basin is set, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 20cm of water inlet pipe in sludge.One end of compressed air release pipe and sedimentation basin external pressure
Contracting air-source is connected, and the lower part of taper reflecting plate is run through in one end.
The pretreatment of betel nut waste water, PAC additions 200mg/L, PAM addition 10mg/ are carried out using this vertical sedimentation tank
L。
In the case of using compressed air, going out aqueous suspension can control in 110mg/L hereinafter, sludge discharging period 4h, still
Apparent Mud up-floating phenomenon does not occur.
Comparative example one,
Progress and the pretreatment of the betel nut waste water of one isodose of embodiment in conventional precipitation pond, PAC addition 300mg/L,
PAM additions 15mg/L.
Slight Mud up-floating phenomenon has occurred for sludge discharging period 2h, and the content for going out aqueous suspension is 120mg/L.
Comparative example two,
Progress and the pretreatment of the betel nut waste water of one isodose of embodiment in conventional precipitation pond, PAC addition 200mg/L,
PAM additions 10mg/L.
Sludge discharging period 2h has occurred apparent Mud up-floating phenomenon, has gone out aqueous suspension and reach as high as 300mg/L.
Comparative example three,
The central draft tube of regular hexagon cylinder in sedimentation basin is set, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 10cm of water inlet pipe in sludge.The pre- of betel nut waste water is carried out using this vertical sedimentation tank
Processing, PAC additions 200mg/L, PAM addition 10mg/L.
In the case of without using compressed air, go out aqueous suspension control in 280mg/L hereinafter, sludge discharging period 2h, occurs bright
Aobvious Mud up-floating phenomenon.
Comparative example four,
The central draft tube of regular hexagon cylinder in sedimentation basin is set, is installed in sludge on the central axes of central draft tube
Return duct, the top of return duct is less than 8 bottom 125cm of water inlet pipe in sludge.Betel nut waste water is carried out using this vertical sedimentation tank
Pretreatment, PAC additions 220mg/L, PAM addition 10mg/L.
In the case of without using compressed air, go out aqueous suspension control and act on left and right, sludge discharging period 2h, hair in 230mg/L
Raw apparent Mud up-floating phenomenon.
Can be seen that the application device from above example and comparative example can significantly mitigate Mud up-floating phenomenon,
In the case that dosage is equivalent, the device effluent quality using return duct in compressed air and sludge is more excellent；It is removed in suspended matter
In the case that effect is essentially identical, 40% or so can be reduced by adding dose.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, that is made any repaiies
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of vertical sedimentation basin with reflux in sludge, which is characterized in that center water conservancy diversion is provided in sedimentation basin
Return duct in cylinder and sludge, in the sludge in the centrally disposed guide shell of return duct, the top of return duct is low in the sludge
In water inlet bottom of the tube 20-120cm；Back taper reflecting plate is provided with below the central draft tube, the taper reflecting plate
Top cone mouth connect with the bottom end opening of return duct in sludge and communicates；The lower part setting compressed air of the taper reflecting plate discharges
Pipe, compressed air release pipe are connected with sedimentation basin external compression air-source.
2. vertical sedimentation basin according to claim 1, which is characterized in that the lower part setting compressed air of taper reflecting plate
Release pipe includes：The opening of central axes face compressed air release pipe of taper reflecting plate or the lower part quilt of taper reflecting plate
The opening of compressed air release pipe runs through.
3. vertical sedimentation basin according to claim 1, which is characterized in that part or all of PAM is added in center water conservancy diversion
The top of cylinder.
4. vertical sedimentation basin according to claim 1, which is characterized in that defoaming spray is set at the top of central draft tube
Mouth.
5. vertical sedimentation basin according to claim 1, which is characterized in that inclined tube is set in vertical sedimentation basin.
6. vertical sedimentation basin according to claim 1, which is characterized in that the central draft tube is vertically arranged circle
Shape or regular polygon cylinder.
7. vertical sedimentation basin according to claim 1, which is characterized in that the body centre axis of the central draft tube
It is overlapped with the central axis of sedimentation basin.
8. vertical sedimentation basin according to claim 1, which is characterized in that the sedimentation basin body upper part to be round or
Regular polygon cylinder, lower part are cone bucket shape structure, and cone bucket shape structural base sets spoil disposal pipeline.
9. vertical sedimentation basin according to claim 1, which is characterized in that the water conservancy diversion in the sludge above return duct
Setting deflector in cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171960.2A CN108178271A (en) | 2018-03-01 | 2018-03-01 | Vertical sedimentation basin with reflux in sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810171960.2A CN108178271A (en) | 2018-03-01 | 2018-03-01 | Vertical sedimentation basin with reflux in sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108178271A true CN108178271A (en) | 2018-06-19 |
Family
ID=62553093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810171960.2A Pending CN108178271A (en) | 2018-03-01 | 2018-03-01 | Vertical sedimentation basin with reflux in sludge |
Country Status (1)
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108905308A (en) * | 2018-07-18 | 2018-11-30 | 苏州清控环保科技有限公司 | A kind of novel vertical sedimentation basin |
| CN109467174A (en) * | 2018-12-25 | 2019-03-15 | 欧基（上海）环保科技有限公司 | A kind of gas return-air washes inclined plate inclined tube-type settler |
| CN109626642A (en) * | 2018-12-27 | 2019-04-16 | 北京翰祺环境技术有限公司 | Fluorine-contained wastewater treatment system and fluorine-containing wastewater treatment method |
| CN113307417A (en) * | 2021-07-28 | 2021-08-27 | 中煤科工清洁能源股份有限公司 | Desulfurization wastewater treatment device and method |
| CN114768577A (en) * | 2022-04-13 | 2022-07-22 | 江西省共青城润泉供水有限公司 | Sludge modification backflow system and backflow method thereof |
| CN115745306A (en) * | 2022-11-30 | 2023-03-07 | 中冶赛迪工程技术股份有限公司 | Integrated pretreatment structure for steel wastewater |
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| CN108905308A (en) * | 2018-07-18 | 2018-11-30 | 苏州清控环保科技有限公司 | A kind of novel vertical sedimentation basin |
| CN109467174A (en) * | 2018-12-25 | 2019-03-15 | 欧基（上海）环保科技有限公司 | A kind of gas return-air washes inclined plate inclined tube-type settler |
| CN109626642A (en) * | 2018-12-27 | 2019-04-16 | 北京翰祺环境技术有限公司 | Fluorine-contained wastewater treatment system and fluorine-containing wastewater treatment method |
| CN113307417A (en) * | 2021-07-28 | 2021-08-27 | 中煤科工清洁能源股份有限公司 | Desulfurization wastewater treatment device and method |
| CN113307417B (en) * | 2021-07-28 | 2021-11-16 | 中煤科工清洁能源股份有限公司 | Desulfurization wastewater treatment device and method |
| CN114768577A (en) * | 2022-04-13 | 2022-07-22 | 江西省共青城润泉供水有限公司 | Sludge modification backflow system and backflow method thereof |
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