CN115999209A - Hydraulic cyclone diffusion device for grit chamber and installation and use method thereof - Google Patents
Hydraulic cyclone diffusion device for grit chamber and installation and use method thereof Download PDFInfo
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- CN115999209A CN115999209A CN202211559921.2A CN202211559921A CN115999209A CN 115999209 A CN115999209 A CN 115999209A CN 202211559921 A CN202211559921 A CN 202211559921A CN 115999209 A CN115999209 A CN 115999209A
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- grit chamber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Abstract
The invention discloses a hydrocyclone diffusion device for a grit chamber and an installation and use method thereof, which relate to the technical field of sewage treatment and environmental protection, wherein a plurality of sections of diffusion pipes with different pipe diameters are selected, the diffusion pipes with different pipe diameters are arranged according to the sequence of the sizes and are fixed on one side of the bottom of the grit chamber through a pipe support, a hydrocyclone pump is installed at one end with the largest pipe diameter of the hydrocyclone pipe, the hydrocyclone pump is started, sewage is pressed into the hydrocyclone pipe, vertical cyclone is formed by jetting out of each nozzle of the hydrocyclone pipe, and spiral flow is formed by overlapping with horizontal flow along the length direction of the chamber, so that the purpose of separating sand grains is achieved. The invention achieves the purpose of saving the pipe material through the diameter-changing arrangement of the hydraulic diffusion pipe; through setting up the nozzle opening direction optimization, improve the whirl effect.
Description
The application is a divisional application of an invention patent with a mother case name of 'an installation and use method of a hydrocyclone diffusion device for a grit chamber'; the application number of the parent application is: CN201810496193.2; the application date of the parent application is: 2018-05-22.
Technical Field
The invention relates to the technical field of sewage treatment and environmental protection, in particular to an installation and use method of a hydrocyclone diffusion device for a grit chamber.
Background
The effect of the traditional advection type sand setting Chi Chensha is greatly influenced by fluctuation of water inflow and sand content of water inflow, meanwhile, the content of sand setting organic matters is high, and special sand washing treatment is needed; the aeration grit chamber forms water rotational flow through aeration, increases collision friction opportunities among sand particles, has better sand removal efficiency and sand organic matter separation effect, has good impact resistance, but has adverse effects on the establishment of denitrification, dephosphorization, anaerobic environment of the subsequent biological reaction section due to the sewage pre-aeration effect, and further increases an aeration device, has high equipment cost and increases operation and maintenance difficulty.
The horizontal flow type hydraulic cyclone sand basin forms vertical cyclone perpendicular to the long direction of the basin by utilizing the jet flow action of water flow, and is overlapped with horizontal flow in the sand basin along the long direction of the basin to form spiral flow. The method has the advantages of impact load resistance, high sand setting efficiency and low sand organic matter content of the aeration sand setting tank, and simultaneously overcomes the adverse effect of the pre-aeration effect of the aeration sand setting tank on the denitrification and dephosphorization of the subsequent biological section. The sand removing mechanism shows that the sand removing effect of the horizontal-flow type hydrocyclone sand basin mainly depends on the hydrocyclone action, so that the design of a simple and efficient hydrocyclone diffusion device is critical.
Disclosure of Invention
The invention aims to provide a hydrocyclone diffusion device for a grit chamber and an installation and use method thereof, which are used for solving the technical problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions:
the invention discloses a hydrocyclone diffusion device for a grit chamber, which comprises a plurality of sections of diffusion pipes, wherein the diffusion pipes are arranged at the bottom of the grit chamber, the pipe diameters of the sections of diffusion pipes are gradually reduced, the diameter of the diffusion pipe close to one side of the water outlet end of the grit chamber is the largest, a plurality of nozzles are arranged on the diffusion pipe, the caliber of the nozzle on the diffusion pipe with the large pipe diameter is larger than that of the nozzle on the diffusion pipe with the small pipe diameter, a hydrocyclone pump is arranged at one end of the diffusion pipe with the largest pipe diameter, one end of the diffusion pipe with the smallest pipe diameter penetrates through the side wall of the grit chamber, a wall penetrating sleeve is arranged between the diffusion pipe with the smallest pipe diameter and the side wall of the grit chamber, a manual butterfly valve is arranged at one end of the diffusion pipe with the smallest pipe diameter, and the manual butterfly valve is used for overhauling.
Preferably, the distance between the connected nozzles on the diffusion pipe with a large pipe diameter is larger than the distance between the connected nozzles on the diffusion pipe with a small pipe diameter.
Preferably, the hydraulic cyclone pump adopts a variable-frequency submersible pump.
Preferably, two adjacent diffusion pipes are connected through a reducing pipe.
Preferably, the diffusion pipe is fixed at the bottom of the grit chamber through a pipe support.
The invention also discloses a method for installing and using the hydrocyclone diffusion device for the grit chamber, which comprises the following steps:
A. selecting a plurality of sections of diffusion pipes with different pipe diameters, and arranging nozzles on the diffusion pipes, wherein the larger the pipe diameter of the diffusion pipes is, the larger the nozzle spacing is, and the larger the nozzle caliber is;
B. the diffusion pipes with different pipe diameters are arranged according to the sequence of the sizes, the diffusion pipes are fixed on one side of the bottom of the grit chamber through a pipe support, the opening of a nozzle is vertically upwards, the adjacent diffusion pipes are connected through a reducing pipe, a hydraulic diffusion pipe with a continuous reducing structure is formed, and the diffusion pipe with the largest pipe diameter is close to the water outlet end of the grit chamber;
C. the hydraulic cyclone pump is arranged at one end with the largest pipe diameter of the hydraulic diffusion pipe, and the other end with the smallest pipe diameter of the hydraulic diffusion pipe extends out of the grit chamber through the wall bushing and is provided with the manual butterfly valve;
D. the manual butterfly valve is in a normally closed state, a hydraulic cyclone pump is started, sewage is pressed into the hydraulic diffusion pipe, vertical cyclone is formed by spraying from each nozzle of the hydraulic diffusion pipe, and spiral flow is formed by overlapping horizontal flow along the length direction of the tank.
Preferably, the distance between the nozzles is 1-3 m; the jet flow of the nozzle is 0.1-0.2 m per cubic meter of sewage 3 Setting water; the jet flow velocity of the nozzle is 5.0-7.0 m/s;
wherein, the high value is taken when the water depth of the grit chamber is large, the low value is taken when the water depth of the grit chamber is small, and the relation between the flow velocity of the nozzle and the distance between the nozzles and the caliber of the nozzle is as follows:
v: nozzle flow rate in m/s;
k: the jet flow rate of sewage per unit volume is 0.1-0.2 m per cubic meter of sewage 3 Water;
a is the cross section area of the grit chamber, unit m 2 ；
d: nozzle pitch, unit m;
d: nozzle bore, unit m.
Preferably, a vertical swirl is formed in the jet flow of the nozzle, and the relation between the tangential flow velocity of the swirl and the water depth is:
in the process of rising from the nozzle outlet to the free liquid level of the grit chamber: v=ah 2 +bH+c；
In the process of descending the free liquid level of the self-settling tank to the bottom of the self-settling tank: v=mh+n;
v: swirl tangential flow velocity (m/s);
h: the water depth (m) and the free liquid level is 0;
a. b, c, m, n: is a constant;
the tangential flow velocity of the vertical rotational flow formed by the jet flow of the nozzle is maintained above 0.2m/s in the whole rotational flow movement process.
Compared with the prior art, the invention has the following technical effects:
the invention has less equipment, simplicity and high efficiency; the hydraulic cyclone pump operates in a variable frequency mode, the operation working condition can be adjusted according to the quality and quantity of the inflow water, the cyclone strength is changed, and the stable sand removal effect is achieved; the purpose of saving the pipe is achieved through the diameter-changing arrangement of the hydraulic diffusion pipe; meanwhile, the sand removal effect of the grit chamber is greatly improved through the optimized arrangement of the opening direction and the spacing of the nozzles. Meanwhile, a relation formula of the nozzle flow velocity and the nozzle distance, the nozzle caliber relation formula and a relation formula of the rotational flow velocity and the water depth of the grit chamber are provided, so that the design and calculation of actual engineering are facilitated, and the optimal sand removal effect is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic layout view of a hydrocyclone diffusion apparatus for a grit chamber according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a horizontal-flow type hydrocyclone sand sedimentation Chi Zong in a hydrocyclone diffusion apparatus for a sand sedimentation tank according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of spiral flow in a hydrocyclone diffusion apparatus for grit chamber in accordance with an embodiment of the present invention.
In the figure: 1-hydraulic cyclone pump, 2-hydraulic diffusion pipe, 3-nozzle, 4-reducer, 5-wall bushing, 6-manual butterfly valve and 7-pipe support.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a hydrocyclone diffusion device for a grit chamber and an installation and use method thereof, which are used for solving the technical problems in the prior art.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Embodiment 1,
As shown in fig. 1 to 3, the present embodiment provides a hydrocyclone diffusion apparatus for a grit chamber, which mainly includes a hydrocyclone pump 1 and a hydrocyclone pipe 2. The hydraulic cyclone pump 1 is arranged at the water outlet end of the grit chamber, sewage is pressed into the hydraulic diffusion pipe 2 according to a certain flow, a plurality of nozzles 3 are arranged on the diffusion pipe 2 at certain intervals, the nozzles 3 are jet nozzles, sewage in the diffusion pipe 2 is sprayed out from the nozzles 3 to form vertical cyclone and is overlapped with horizontal flow along the length direction of the grit chamber to form spiral flow (shown in figure 2), so that the purpose of efficiently separating sand grains is achieved.
The hydraulic diffusion pipe 2 is fixed on one side of the bottom of the pool through the pipe support 7, the diffusion pipe 2 adopts a reducing mode, the pipe diameter of one side close to the hydraulic cyclone pump 1 is large, and the pipe diameter of one side far away from the hydraulic cyclone pump 1 is small. The arrangement space of the nozzles 3 on the side close to the hydrocyclone pump 1 is large, the arrangement space of the nozzles on the side far away from the hydrocyclone pump 1 is small, and the arrangement form ensures that the hydraulic swirling effect of the water inlet end is strong, the hydraulic swirling effect of the water outlet end is weak, and the sand removal process rule is met. The opening of the nozzle 3 is vertical upwards, so that the scouring of the tank body is avoided, the sedimentation and the sliding of sand grains are facilitated by water flow of jet flow, and meanwhile, manual cleaning is facilitated.
The hydraulic cyclone pump 1 is arranged at the water outlet end of the grit chamber, so that sewage from which sand grains are separated can be pressed into the hydraulic diffusion pipe 2, and abrasion of the hydraulic cyclone pump 1 caused by the sand grains in the sewage is avoided, and the service life of the hydraulic cyclone pump 1 is influenced.
The flow of the hydrocyclone pump 1 is 0.1-0.2 m according to the sewage jet flow per cubic meter 3 Selecting water; the lift is determined by hydraulic calculation through a pipeline according to the flow rate of the guaranteed nozzle 3 of 5.0-7.0 m/s. The diameter of the hydraulic diffusion pipe 2 is according to the flow velocity in the pipe1.0-2.0 m/s. The hydraulic cyclone pump adopts a variable-frequency submersible pump, and the flow is 0.2m according to the jet flow quantity of sewage per cubic meter 3 And (5) selecting water.
Embodiment II,
The embodiment provides a method for installing and using a hydrocyclone diffusion device for a grit chamber, which comprises the following steps:
A. selecting a plurality of sections of diffusion pipes 2 with different pipe diameters, wherein a plurality of nozzles 3 are arranged on the diffusion pipes 2, and the larger the pipe diameter of the diffusion pipes 2 is, the larger the interval between the nozzles 3 arranged on the diffusion pipes 2 is, and the larger the caliber of the nozzles 3 is;
B. the diffusion pipes 2 with different pipe diameters are arranged according to the sequence of the sizes, the diffusion pipes are fixed on one side of the bottom of the grit chamber through a pipe support 7, the opening of a nozzle 3 is vertically upwards, the adjacent diffusion pipes 2 are connected through a reducing pipe 4, a hydraulic diffusion pipe 2 with a continuous reducing structure is formed, and the diffusion pipe 2 with the largest pipe diameter is close to the water outlet end of the grit chamber;
C. the hydraulic cyclone pump 1 is arranged at the end with the largest pipe diameter of the hydraulic diffusion pipe 2, and the end with the smallest pipe diameter of the hydraulic diffusion pipe 2 extends out of the grit chamber through the wall bushing 5 and is provided with the manual butterfly valve 6;
D. the manual butterfly valve 6 is in a normally closed state, the hydraulic cyclone pump 1 is started, sewage is pressed into the hydraulic diffusion pipe 2, and is sprayed 3 from each nozzle of the hydraulic diffusion pipe 2 to form vertical cyclone, and the vertical cyclone is overlapped with horizontal flow along the length direction of the tank to form spiral flow, so that the purpose of separating sand grains is achieved.
According to the specific embodiment of the invention, the pipe diameters of the diffusion pipes are divided into three steps, namely DN400, DN300 and DN200, and the reducing positions are connected by adopting a reducing pipe 4. The tail end of the hydraulic diffusion pipe 2 extends out of the pool through a wall bushing 5, and a manual butterfly valve 6 is arranged at the tail end of the hydraulic diffusion pipe 2 and used for emergency maintenance of the diffusion pipe, and is in a normally closed state during normal operation.
The nozzle 3 is upward in opening (as shown in fig. 2), the arrangement interval of the nozzle 3 at the water outlet end of the grit chamber is large, the arrangement interval of the nozzle 3 at the water outlet end of the grit chamber is small, the interval of the nozzle 3 is 1-3m, wherein the interval of the nozzle 3 at the pipe section of the DN400 diffusion pipe 1 is 3m, the interval of the nozzle 3 at the pipe section of the DN300 diffusion pipe 2 is 2m, and the interval of the nozzle 3 at the pipe section of the DN200 diffusion pipe 2 is 1m.
The relationship between the rotational flow tangential flow velocity and the water depth is as follows:
in the process of rising from the nozzle outlet to the free liquid level of the grit chamber: v=ah 2 +bH+c；
In the process of descending the free liquid level of the self-settling tank to the bottom of the self-settling tank: v=mh+n;
v: swirl tangential flow velocity (m/s);
h: the water depth (m) and the free liquid level is 0;
a. b, c, m, n: constants related to the temperature, density and viscosity coefficient of the liquid are determined through experiments and simulations;
the vertical rotational flow tangential flow velocity formed by jet flow of the nozzle 3 is maintained above 0.2m/s in the whole rotational flow movement process so as to ensure the effective removal rate of sand grains, under the condition of ensuring the minimum rotational flow tangential flow velocity, the outlet flow velocity at the nozzle is calculated according to the rotational flow tangential flow velocity and water depth relation, and then the nozzle spacing and the nozzle caliber are determined according to the nozzle flow velocity, the nozzle spacing and the nozzle caliber relation.
According to the specific embodiment of the invention, through experiments and calculation simulation, the relation between the rotational flow tangential flow velocity and the water depth is determined as follows:
in the process of rising from the nozzle outlet to the free liquid level of the grit chamber: v= 0.6842H 2 -0.8178H+0.6394；
In the process of descending the free liquid level of the self-settling tank to the bottom of the self-settling tank: v=0.0326 h+02618;
in order to ensure the sand removal effect, the minimum rotational flow tangential flow velocity is considered according to 0.2m/s, the outlet flow velocity at the nozzle is calculated according to the relation between the rotational flow tangential flow velocity and the water depth to be about 6.5m/s, and then the nozzle caliber is determined according to the relation between the nozzle flow velocity, the nozzle spacing and the nozzle caliber.
The relation between the nozzle flow rate and the nozzle spacing and the nozzle caliber is as follows:
v: nozzle flow rate (m/s);
k: unit (B)Volumetric sewage jet flow (0.1-0.2 m per cubic meter of sewage) 3 Water);
a: cross-sectional area of grit chamber (m) 2 )；
d: nozzle pitch (m);
d: nozzle bore (m).
The foregoing description of the preferred embodiments of the present invention should not be taken as limiting the scope of the invention, but rather should be construed in view of the appended claims.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. A hydrocyclone diffusion device for grit chamber, its characterized in that: including a plurality of sections of diffusion pipes, the diffusion pipe sets up in the bottom of the pool of grit chamber, and a plurality of sections the pipe diameter of diffusion pipe reduces gradually, is close to the diameter of diffusion pipe in the play water end side of grit chamber is biggest, install a plurality of nozzles on the diffusion pipe, the pipe diameter is big on the diffusion pipe the bore of nozzle is greater than on the diffusion pipe that the pipe diameter is little the bore of nozzle, the pipe diameter is biggest install the hydrocyclone pump on the one end of diffusion pipe the one end of pipe diameter is minimum the one end of diffusion pipe passes the lateral wall of grit chamber, the pipe diameter is minimum the diffusion pipe with be provided with wall bushing between the lateral wall of grit chamber, the pipe diameter is minimum be equipped with manual butterfly valve on the one end of diffusion pipe, manual butterfly valve is used for overhauling.
2. The hydrocyclone diffusion apparatus for grit chamber of claim 1, wherein: the distance between the connected nozzles on the diffusion pipe with large pipe diameter is larger than the distance between the connected nozzles on the diffusion pipe with small pipe diameter.
3. The hydrocyclone diffusion apparatus for grit chamber of claim 1, wherein: the hydraulic cyclone pump adopts a variable-frequency submersible pump.
4. The hydrocyclone diffusion apparatus for grit chamber of claim 1, wherein: two adjacent diffusion pipes are connected through a reducing pipe.
5. The hydrocyclone diffusion apparatus for grit chamber of claim 1, wherein: the diffusion pipe is fixed at the bottom of the grit chamber through a pipe support.
6. A method of installing and using a hydrocyclone diffusion apparatus for a grit chamber as in any one of claims 1 to 5, comprising the steps of:
A. selecting a plurality of sections of diffusion pipes with different pipe diameters, and arranging nozzles on the diffusion pipes, wherein the larger the pipe diameter of the diffusion pipes is, the larger the nozzle spacing is, and the larger the nozzle caliber is;
B. the diffusion pipes with different pipe diameters are arranged according to the sequence of the sizes, the diffusion pipes are fixed on one side of the bottom of the grit chamber through a pipe support, the opening of a nozzle is vertically upwards, the adjacent diffusion pipes are connected through a reducing pipe, a hydraulic diffusion pipe with a continuous reducing structure is formed, and the diffusion pipe with the largest pipe diameter is close to the water outlet end of the grit chamber;
C. the hydraulic cyclone pump is arranged at one end with the largest pipe diameter of the hydraulic diffusion pipe, and the other end with the smallest pipe diameter of the hydraulic diffusion pipe extends out of the grit chamber through the wall bushing and is provided with the manual butterfly valve;
D. the manual butterfly valve is in a normally closed state, a hydraulic cyclone pump is started, sewage is pressed into the hydraulic diffusion pipe, vertical cyclone is formed by spraying from each nozzle of the hydraulic diffusion pipe, and spiral flow is formed by overlapping horizontal flow along the length direction of the tank.
7. Root of Chinese characterThe method for installing and using a hydrocyclone diffusion device for a grit chamber according to claim 1, wherein: the distance between the nozzles is 1-3 m; the jet flow of the nozzle is 0.1-0.2 m per cubic meter of sewage 3 Setting water; the jet flow velocity of the nozzle is 5.0-7.0 m/s;
wherein, the high value is taken when the water depth of the grit chamber is large, the low value is taken when the water depth of the grit chamber is small, and the relation between the flow velocity of the nozzle and the distance between the nozzles and the caliber of the nozzle is as follows:
v: nozzle flow rate in m/s;
k: the jet flow rate of sewage per unit volume is 0.1-0.2 m per cubic meter of sewage 3 Water;
a is the cross section area of the grit chamber, unit m 2 ；
d: nozzle pitch, unit m;
d: nozzle bore, unit m.
8. The method of installing and using a hydrocyclone diffusion device for a grit chamber of claim 6, wherein: the vertical rotational flow formed by jet flow of the nozzle has the following relation between the tangential flow velocity of the rotational flow and the water depth:
in the process of rising from the nozzle outlet to the free liquid level of the grit chamber: v=ah 2 +bH+c；
In the process of descending the free liquid level of the self-settling tank to the bottom of the self-settling tank: v=mh+n;
v: swirl tangential flow velocity (m/s);
h: the water depth (m) and the free liquid level is 0;
a. b, c, m, n: is a constant;
the tangential flow velocity of the vertical rotational flow formed by the jet flow of the nozzle is maintained above 0.2m/s in the whole rotational flow movement process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211559921.2A CN115999209A (en) | 2018-05-22 | 2018-05-22 | Hydraulic cyclone diffusion device for grit chamber and installation and use method thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810496193.2A CN108815892A (en) | 2018-05-22 | 2018-05-22 | A kind of installation and application method of the hydraulic cyclone disperser for setting pot |
| CN202211559921.2A CN115999209A (en) | 2018-05-22 | 2018-05-22 | Hydraulic cyclone diffusion device for grit chamber and installation and use method thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810496193.2A Division CN108815892A (en) | 2018-05-22 | 2018-05-22 | A kind of installation and application method of the hydraulic cyclone disperser for setting pot |
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| CN115999209A true CN115999209A (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211559921.2A Pending CN115999209A (en) | 2018-05-22 | 2018-05-22 | Hydraulic cyclone diffusion device for grit chamber and installation and use method thereof |
| CN201810496193.2A Pending CN108815892A (en) | 2018-05-22 | 2018-05-22 | A kind of installation and application method of the hydraulic cyclone disperser for setting pot |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201810496193.2A Pending CN108815892A (en) | 2018-05-22 | 2018-05-22 | A kind of installation and application method of the hydraulic cyclone disperser for setting pot |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE305583B (en) * | 1960-01-22 | 1968-10-28 | Lamort E & M Fils | |
| US4576720A (en) * | 1984-05-18 | 1986-03-18 | Mandt Mikkel G | Subcyclonic jet recirculation grit removal system |
| CN1319874C (en) * | 2003-07-25 | 2007-06-06 | 上海市政工程设计研究院 | Reaction pool of waste water biological treatment |
| US8470172B2 (en) * | 2007-01-09 | 2013-06-25 | Siemens Industry, Inc. | System for enhancing a wastewater treatment process |
| CN201334412Y (en) * | 2008-12-19 | 2009-10-28 | 上海依科绿色工程有限公司 | Integrated waste water biochemical treatment device |
| CN102580364B (en) * | 2012-03-22 | 2014-11-05 | 北京市市政工程设计研究总院有限公司 | Telescopic covers of aeration sand settling tank and deodorization device |
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2018
- 2018-05-22 CN CN202211559921.2A patent/CN115999209A/en active Pending
- 2018-05-22 CN CN201810496193.2A patent/CN108815892A/en active Pending
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