CN109879542A - A kind of sewage water treatment method - Google Patents
A kind of sewage water treatment method Download PDFInfo
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- CN109879542A CN109879542A CN201910226121.0A CN201910226121A CN109879542A CN 109879542 A CN109879542 A CN 109879542A CN 201910226121 A CN201910226121 A CN 201910226121A CN 109879542 A CN109879542 A CN 109879542A
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Abstract
The invention discloses a kind of sewage water treatment methods, include the following steps: S1, sewage is passed through coarse rack filtering and removing slag, are then promoted in mixing pit and are stirred with anaerobic sludge in mixing pit with regulating water quality, anaerobism dephosphorization pretreatment again；S2, after step S1 processing, then pre-processed, biochemical treatment and materializing strategy；S3, sewage it will enter aeration zone later after treatment and carry out Aerobic Process for Treatment through fine fack intercepts fine slag again, the removal of advection sand setting canal can sink after particle sand grains, carry out denitrification denitrogenation processing into preposition anoxic zone.Sewage treatment process of the invention eliminates the links such as fine fack, setting pot, secondary settling tank, sludge condensation and the sludge treatment in existing sewage treatment process compared with existing sewage treatment process, simplifies process flow, is conducive to control and management, and operating cost is low.
Description
Technical field
The invention belongs to water body disinfection technical fields, more particularly, to a kind of sewage water treatment method.
Background technique
Conventional sewage water treatment method is i.e. activated sludge process and biofilm two major classes based on biochemical method, wherein living
Property sludge is a kind of most widely used two stage biological treatment process in current countries in the world.Previous Activated Sludge Process is main
It is removal organic polluter, removal organic polluter should be removed at present by entering comprehensively, again the operation stage of denitrogenation dephosphorizing.It is living
Property sludge denitrification dephosphorization technique principle it is all substantially similar, but there are many forms of expression, it is more common at present have A/A/O technique,
UCT technique, modified form Carrousel (Carrousel) oxidation ditch process, AB method technique, SBR technique, CAST technique, Unitank
Technique, MBR technique, MSBR technique etc..Conventional activated sludge method technique mostly first will by coarse rack, lift pump room, fine fack,
The coagulation of the pretreatments such as sand setting or/and primary sedimentation pond precipitating carries out secondary biochemical treatment subsequently into aeration tank, later
Mud-water separation is carried out into secondary sedimentation tank, discharge after the clear water after separation is sterilized, precipitating sludge then passes through reflux and is pumped back to
It is recycled in aeration tank, small part sludge carries out thickening disposition as excess sludge.
Above-mentioned very complicated common process will also add denitrogenation dephosphorizing function, thus overall craft becomes abnormal multiple
Miscellaneous, process is longer, and processing structures are more.For extensive sewage treatment, still receive；For small-scale, shine
It brings up to and states that way is just both uneconomical or unreasonable, be suitble to the activated sludge process of small-scale sewage treatment de- therefore, it is necessary to search out
Nitrogen Dephosphorization New Technique.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides a kind of simple sewage water treatment method of process flow.
To achieve the goals above, it the invention adopts the following technical scheme: a kind of method of sewage treatment, including walks as follows
It is rapid:
S1, sewage is passed through into coarse rack filtering and removing slag, be then promoted to again in mixing pit mixed with anaerobic sludge stirring in mixing pit
It closes and is pre-processed with regulating water quality, anaerobism dephosphorization；
S2, after step S1 processing, then pre-processed, biochemical treatment and materializing strategy;
S3, sewage will enter after treatment through fine fack intercepts fine slag again, the removal of advection sand setting canal can sink after particle sand grains
Preposition anoxic zone carries out denitrification denitrogenation processing, enters aeration zone later and carries out Aerobic Process for Treatment；
S4, biological denitrificaion and biological phosphate-eliminating are carried out to through S3 treated sewage, subsequently into clarification recirculating zone；
S5, the clarification clarified catch basin of recirculating zone supernatant liquid enter settling zone and carry out chemical dephosphorization and coagulating sedimentation collaboration
Processing；
S6, middle layer clarification activity sludge, which are passed through, flows back into aeration zone recycling from top with horizontal planar field air lift microkinetic return channel；
A part of gravity reflux of bottom sludge adjusts elevator pump pond to anaerobic hydrolysis, and another part is promoted oblique to sludge through residual sludge pump
Storage basin is concentrated in plate；
The thickened sludge of S7, sludge inclined plate concentration storage basin, the mud cake outward transport disposition after the processing of diaphragm pressing machine deep dehydration；
S8, compound diatomite modified water treatment agent is added to clarified solution, then precipitated, upper layer clear water is collected through precipitating catch basin
To disinfection of effluent system；
S9, clear water are sterilized through ultraviolet light open channel sterilizing equipment decontaminating apparatus continuous contact, by open channel monitoring and flow measurement, most afterwards through being discharged
Pipe discharge.
Preferably, coarse rack is at least four layers in step S1, and the aperture of later layer is greater than the aperture of the preceding layer；
The solid gradually crossed in drainage can be realized by Multilayer grid, can avoid coarse rack blocking.
Preferably, by mass percentage, modification infusorial earth 70~85% gathers each raw material of water treatment agent described in step S8
Bisgallic acid flocculating agent 14~26% is closed, positive ion organic high polymer coagulant is 1~4%.
Preferably, the modification infusorial earth uses SiO2The diatomite that average content is 60% or more, and through 33% concentration sulphur
Acid dip processing and 450 DEG C of periodic kilns roast to be formed.
Preferably, the fineness of the modification infusorial earth is 100~150 mesh.
Ultraviolet light open channel sterilizing equipment decontaminating apparatus described in step S9, including
Open channel；
More vertically disposed quartz burners, the quartz burner are set in the open channel to irradiate the water body for flowing through open channel；
Power supply structure in the open channel, for fixing the quartz burner and powering to the quartz burner；
The casing of transparent setting, the casing are set to so that the quartz burner penetrates on the power supply structure, and the casing hinders
Water proof body is directly in contact with quartz burner；
Current-limiting apparatus in the open channel, for limiting flow velocity by casing when of water body in open channel and to the water in open channel
Body is filtered.
The rate of water body flow in open channel can be limited by the way that current-limiting apparatus is arranged, ensures that water body is passing through quartz burner
When Disinfection Effect；And because can be carried out filtering to water body, so that water body when quartz burner by not will receive
Stop；It, can be by quartz burner when quartz burner is damaged by the way that quartz burner to be vertically arranged
It directly extracts, to be replaced to quartz burner；Which is not necessarily to entirely extract frame etc., to quartz burner
Carry out that replacement is convenient, and transparent casing be set, when quartz burner is dismantled, casing can avoid water body with
Quartz burner is in contact, therefore when being dismantled quartz burner, avoids shadow of the quartz burner by water flow
It rings, difficulty when dismantling to quartz burner can be reduced；Simultaneously as setting casing, is dismantled by quartz burner
When out, water body will not place enter lower portion and cause lower portion charge object occur short circuit, to entire frame
Circuit protection inside frame；And casing can protect quartz burner, avoid water body flow that quartz burner is caused to open
Situations such as splitting, therefore also avoid mercury vapour in quartz burner from sending out and be leaked in water body, casing effective protection water body, keeps away
Exempt from water body by recontamination.
Preferably, the current-limiting apparatus includes frame, the first current limiting plate on the frame and limits with described first
The second current limiting plate that flowing plate matches, first, second current limiting plate are set on the frame；Pass through setting first, second
Current limiting plate can realize the flow velocity for exchanging water-saving body.
Preferably, first current limiting plate is equipped with first through hole, and second current limiting plate is equipped with the second through-hole；Pass through
It first, second through-hole is set can realize and flowed through for water body, and the aperture changed between the first, second through-hole can also be passed through, realize
The effect that water body is filtered.
Preferably, the frame is equipped with the sliding slot for second current limiting plate insertion, and second current limiting plate is equipped with
The ball matched with the sliding slot；Stability of second current limiting plate in sliding, and ball can be kept by the way that sliding slot is arranged
It can be reduced the frictional force between the second current limiting plate and sliding slot.
Preferably, the frame is equipped with the driving cylinder for driving second current limiting plate to move up and down；By setting
The stability for driving the second current limiting plate to move up and down can be realized by setting driving cylinder.
In conclusion sewage treatment process of the invention compared with existing sewage treatment process, eliminates at existing sewage
The links such as fine fack, setting pot, secondary settling tank, sludge condensation and sludge treatment in science and engineering skill simplify process flow, are conducive to control
And management, operating cost is low, is suitable for small towns sewage treatment plant, and treated effluent quality can be according to requiring to reach level-one A
Standard or recycle water standard.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is partial structural diagram one of the invention.
Fig. 3 is partial sectional view of the invention.
Fig. 4 is the enlarged drawing of A in Fig. 3.
Fig. 5 is the enlarged drawing of the B in Fig. 3.
Fig. 6 is partial exploded view of the invention.
Fig. 7 is partial structural diagram two of the invention.
Fig. 8 is partial structural diagram three of the invention.
Fig. 9 is partial structural diagram four of the invention.
Figure 10 is the enlarged drawing of C in Fig. 9.
Figure 11 is the explosive view of Fig. 9.
Figure 12 is partial structural diagram five of the invention.
Figure 13 is the explosive view of Figure 12.
Specific embodiment
A kind of method of sewage treatment, which comprises the steps of:
S1, sewage is passed through into coarse rack filtering and removing slag, and coarse rack is at least four layers, and the aperture of later layer is greater than described
The aperture of preceding layer；It is promoted in mixing pit after filtering and removing slag and is stirred with anaerobic sludge in mixing pit to adjust water again
Matter, anaerobism dephosphorization pretreatment；
S2, after step S1 processing, then pre-processed, biochemical treatment and materializing strategy;
S3, sewage will enter after treatment through fine fack intercepts fine slag again, the removal of advection sand setting canal can sink after particle sand grains
Preposition anoxic zone carries out denitrification denitrogenation processing, enters aeration zone later and carries out Aerobic Process for Treatment；
S4, biological denitrificaion and biological phosphate-eliminating are carried out to through S3 treated sewage, subsequently into clarification recirculating zone；
S5, the clarification clarified catch basin of recirculating zone supernatant liquid enter settling zone and carry out chemical dephosphorization and coagulating sedimentation collaboration
Processing；
S6, middle layer clarification activity sludge, which are passed through, flows back into aeration zone recycling from top with horizontal planar field air lift microkinetic return channel；
Bottom sludge a part flows back into anaerobic hydrolysis again and adjusts elevator pump pond, and another part is promoted oblique to sludge through residual sludge pump
Storage basin is concentrated in plate；
The thickened sludge of S7, sludge inclined plate concentration storage basin, the mud cake outward transport disposition after the processing of diaphragm pressing machine deep dehydration；
S8, water treatment agent being added to clarified solution, then being precipitated, upper layer clear water is collected into disinfection of effluent system through precipitating catch basin
System；
S9, clear water are sterilized through ultraviolet light open channel sterilizing equipment decontaminating apparatus continuous contact, are monitored by disinfection by ultraviolet light open channel and flow measurement,
Most it is discharged afterwards through outlet pipe.
Further, each raw material of water treatment agent described in step S8 by mass percentage, modification infusorial earth 70~85%,
Polymeric biacid flocculating agent 14~26%, positive ion organic high polymer coagulant are 1~4%；Wherein the modification infusorial earth uses
SiO2The diatomite that average content is 60% or more, and the diatomite is through 33% concentration sulfuric acid impregnation, then by between 450 DEG C
Kiln of having a rest roasts the modification infusorial earth to form that fineness is 100~150 mesh.
As shown in figs. 1-11, ultraviolet light open channel sterilizing equipment decontaminating apparatus described in step S9, including open channel 1, quartz burner 2,
Power supply structure 3 and casing 4, wherein the open channel 1 can be channel made of metal channel or concreting, it is described ultraviolet
Line fluorescent tube 2, power supply structure 3 and casing 4 are set in the open channel 1, and the quartz burner 2 is in the case where energization,
Water body can be irradiated, to carry out disinfection to water body；The power supply structure 3 is then used to be powered to the quartz burner 2, and
Described sleeve pipe 4 is located on the power supply structure 3,4 sets of the casing outside the quartz burner 2, thus obstruct water directly with purple
Outside line fluorescent tube 2 is in contact.
Specifically, the power supply structure 3 includes frame 30, multiple first joint components 31 and multiple second joint components
32, wherein the frame 30 is the steel frame of inner hollow, which is set in the open channel 1；First joint component
31 are set to 30 lower part of frame, which includes connector 311 made of copper and the bullet in the connector 311
Piece 312, and multiple insulation sleeves 305 are equipped in 30 lower part of frame, the insulation sleeve 305 is ceramic jacket, the connector 311
In the insulation sleeve 305；Two adjacent simultaneously connectors 311 are connected by extension bar 315 made of copper, and then realize all connect
First 315 series connection for being；The lower end of the quartz burner 2 is inserted on the connector 315, and elastic slice 312 with it is described
2 lower end of quartz burner is in contact；It can be realized by the way that the first joint component and the second joint component are arranged on frame to ultraviolet
Line fluorescent tube is powered, so that quartz burner can be shone in open channel to realize disinfection；And because the first, second connector portions
The setting of part, which can also be achieved, positions quartz burner, keeps quartz burner being located at cannula center, therefore ultraviolet
, it can be achieved that light is uniformly irradiated in water when line light-illuminating is gone out, and then realizes and water body is uniformly sterilized,
Ensure Disinfection Effect.
Further, second joint component 32 includes connection shell 321, conduct piece 322, the first elastic component 323 and supplies
Electric conductor 324, the conduct piece 322 are a copper metal head, have notch section 328 on the outer wall of the conduct piece 322；By setting
Setting notch can be conductive when opening convenient for lid convenient for when lid is opened, quartz burner upper end can pass through from indentation, there
Part is contacted with quartz burner disconnection, to realize power-off；First elastic component 323 is set on the conduct piece 322, this
One elastic component 323 is the copper sheet of a Z-shaped setting, and the connection shell 321 is ceramic case, and 321 sets of the connection shell is in the conduct piece
On 322；It is equipped with one on the conduct piece 322 simultaneously to conduct electricity bar 325, the bar 325 that conducts electricity is copper metal bar；The bar that conducts electricity
325 are in contact with the power supply conductor 324；The power supply conductor 324 is the copper post that an outer wall is enclosed with ambroin simultaneously, should
Power supply conductor 324 is fixed on the inner wall of the frame 30；And it can reveal on the power supply conductor 324 at interval of a distance
Internal copper metal line out, is equipped with expansion mouth 326 on the power supply conductor 324, and the expansion mouth 326 is two symmetrically arranged
What plastic bar was constituted, the second elastic component 327 is equipped on the expansion mouth 326, second elastic component 327 is spring, described
Second elastic component 327 exposes part with power supply conductor 324 and is in contact, therefore second elastic component 327 conducts electricity with described
Bar 325 is in contact, to be powered to conduct piece 322；The conduct piece 322 and the 2 top phase of quartz burner simultaneously
Contact, to be powered to quartz burner 2, therefore by the setting of conduct electricity bar 325 and power supply conductor 322, realization is led
Electric part 322 is parallel connection；It can realize and be powered to quartz burner by setting conduct piece and power supply conductor, and because set
It is equipped with the first elastic component and ensures that conduct piece is completely embedded with the quartz burner top, and then powered stable.
Specifically, being equipped with lid 301 on the frame 30, which is metal plate, the side of the lid 301
It is hinged with the frame 30, therefore the lid 301 is openable；The connection shell 321 is connected with the lid 301, therefore
When the lid 301 is opened, the connection shell 321, conduct piece 322 and the bar that conducts electricity can be moved, and be conducted electricity to realize
Bar 325 is disconnected with second elastic component 327, and then realizes that conduct piece 322 powers off；It is set on the lid 301
There is sealant 302,302 rubber layer of sealant, which is adhered on the lid 301, in the lid 301
When closing, the sealant 302 is in contact with the frame 30, thus realize realized between lid 301 and frame 30 it is close
Envelope cooperation;Lid can be then ensured after covering by the way that sealant is arranged, and the leakproofness between lid and frame ensures water body not
The inside of frame can be entered and cause conduct piece short-circuit, ensured the stability of whole system；Described sleeve pipe 4 is one transparent
The glass siphunculus of setting, 4 sets of described sleeve pipe outside the quartz burner 2；Frame can be worked as by the way that its one side of lid is arranged
In conduct piece situations such as being protected, avoiding the water in open channel from splashing on conduct piece and cause conduct piece that short circuit occurs；And
And the setting of lid can also completely cut off foreign matter and drop into casing the scattering for influencing ultraviolet light, while lid is arranged can also be right
Conduct piece is fixed, and can realize when opening and closing to lid and power supply is powered and disconnected to quartz burner,
Therefore when replacing to quartz burner, power-off is can be realized in a dozen bodies of uncapping, highly-safe, can be avoided completely
Situations such as electric shock, occurs；It can ensure that when on cover cap, the bar that conducts electricity can enter in expansion mouth by the way that expansion mouth is arranged,
Thus ensure the conduction that the bar that conducts electricity can be stable, and the second elastic component, which is arranged, then can closely contact between the bar that conducts electricity, and then really
Protect power supply effect.
Further, the UV sterilizer for open channel further includes that can move up and down to wipe out sleeve outer wall
On apparatus for eliminating sludge 5, the outer wall of casing can be wiped, can periodically surface to casing be carried out by the way that apparatus for eliminating sludge is arranged
Wiping, the dirt that can be attached on sleeve outer wall during being somebody's turn to do is wiped, so as to the effect for keeping ultraviolet light to break forth
Fruit, and then the effect to carry out disinfection to sewage can be improved；The apparatus for eliminating sludge 5 includes scale removal component 51, screw rod 52 and motor 53, institute
It states screw rod 52 to be vertically arranged along the short transverse of the frame 30, the motor 53 passes through the upper end of gear and the screw rod 52
It is connected, which is servo motor, and the motor 53 drives the screw rod 52 to carry out positive and negative rotation；It is driven by screw rod
Scale removal component moves up and down, therefore scale removal component can clear up casing, improves sleeve surface cleannes；The scale removal component
51 include the fixing piece 511 being spirally connected with the screw rod 52 and are detachably connected out scale removal part 512 with the fixing piece 511, wherein
The fixing piece 511 is metal block, which is spirally connected with the screw rod 52, therefore when 52 positive and negative rotation of screw rod,
The fixing piece 511 is moved up and down；The scale removal part 512 is made of rubber, has recessed portion 513 on the scale removal part 512,
Multiple scale removal adhesive tape 514, the side of the scale removal adhesive tape 514 and 513 inner wall of recessed portion are equipped in the recessed portion 513
It is connected, the other end is hanging setting, therefore the scale removal adhesive tape 514 is in contact with described sleeve pipe 2.
Specifically, the scale removal part 512 is connected with the fixing piece 511 by a connection structure；The connection structure packet
The inserting groove 541 and connector 542 being set on the fixing piece 512 are included, Connection protrusion 546 is equipped on the connector 542,
The Connection protrusion 546 is inserted into the inserting groove 541；The scale removal part 512 and 542 glue connection of connector, described
Scale removal part 512 be equipped with one can control movement bolt 543 and with spring 544, the spring 544 be metal spring, the spring
544 one end is connected with the bolt 543, and the other end and the connector 542 are equipped with jack 545, the bolt 543
It is inserted into the spliced eye 545, while being equipped with support block 519 on the fixing piece 511, be equipped on the bolt 543
Limited block 549, one end of the spring 544 are against on the limited block 549, while the support block 519 is located at the bolt 543
Side, thus the bolt 543 after being pulled out takes, the limited block 549 can be against at the support block 519, to limit bolt
543 are reinserted into pin hole.
Further, current-limiting apparatus 6 is equipped in the open channel 1, which limits water body flow in open channel
Rate, and the current-limiting apparatus 6 can also be filtered water body；Specifically, the current-limiting apparatus 6 is limited including frame 60, first
Flowing plate 61 and the second current limiting plate 62, the frame 60 are a metal frame, which is set in the open channel 1；Described first
Current limiting plate 61 is metal plate, which is set on the frame 60, and first current limiting plate 61 is equipped with multiple the
One through-hole 611, second current limiting plate 62 are equally also set on the frame 60, and second current limiting plate 62 is equipped with multiple the
Two through-holes 621, while sliding slot 601 is equipped on the frame 60, second current limiting plate 62 is inserted into the sliding slot 601,
Second current limiting plate 62 is equipped with multiple balls 622 simultaneously, and the ball 622 is bead, the ball 622 and the cunning
601 inner wall of slot is in contact；Driving cylinder 602, the driving cylinder 602 and second current limiting plate are equipped on the frame 60
62 are connected, so that the driving cylinder 602 drives second current limiting plate 62 to move up and down.
Claims (10)
1. a kind of method of sewage treatment, which comprises the steps of:
S1, sewage is passed through into coarse rack filtering and removing slag, be then promoted to again in mixing pit mixed with anaerobic sludge stirring in mixing pit
It closes and is pre-processed with regulating water quality, anaerobism dephosphorization；
S2, after step S1 processing, then pre-processed, biochemical treatment and materializing strategy；
S3, sewage will enter after treatment through fine fack intercepts fine slag again, the removal of advection sand setting canal can sink after particle sand grains
Preposition anoxic zone carries out denitrification denitrogenation processing, enters aeration zone later and carries out Aerobic Process for Treatment；
S4, biological denitrificaion and biological phosphate-eliminating are carried out to through S3 treated sewage, subsequently into clarification recirculating zone；
S5, the clarification clarified catch basin of recirculating zone supernatant liquid enter settling zone and carry out chemical dephosphorization and coagulating sedimentation collaboration
Processing；
S6, middle layer clarification activity sludge, which are passed through, flows back into aeration zone recycling from top with horizontal planar field air lift microkinetic return channel；
Bottom sludge a part flows back into anaerobic hydrolysis again and adjusts elevator pump pond, and another part is promoted oblique to sludge through residual sludge pump
Storage basin is concentrated in plate；
The thickened sludge of S7, sludge inclined plate concentration storage basin, the mud cake outward transport disposition after the processing of diaphragm pressing machine deep dehydration；
S8, water treatment agent being added to clarified solution, then being precipitated, upper layer clear water is collected into disinfection of effluent system through precipitating catch basin
System；
S9, clear water are sterilized by ultraviolet light open channel sterilizing equipment decontaminating apparatus continuous contact, are monitored by disinfection by ultraviolet light open channel and flowmeter
Amount, is most discharged through outlet pipe afterwards.
2. a kind of sewage water treatment method according to the 1 of claim, it is characterised in that: coarse rack is at least in step S1
Four layers, and the aperture of later layer is greater than the aperture of the preceding layer.
3. a kind of sewage water treatment method according to claim 1, it is characterised in that: water treatment agent described in step S8 is each
Raw material by mass percentage, modification infusorial earth 70~85%, polymeric biacid flocculating agent 14~26%, cationic organic high-molecular wadding
Solidifying agent is 1~4%.
4. a kind of sewage water treatment method according to claim 3, it is characterised in that: the modification infusorial earth is flat using SiO2
Equal content is 60% or more diatomite, and roasts and to be formed through 33% concentration sulfuric acid impregnation and 450 DEG C of periodic kilns.
5. a kind of sewage water treatment method according to claim 4, it is characterised in that: the fineness of the modification infusorial earth is
100~150 mesh.
6. a kind of sewage water treatment method according to claim 1, it is characterised in that: the disinfection of ultraviolet light open channel described in step S9
Equipment, including
Open channel (1)；
More vertically disposed quartz burners (2), the quartz burner (2) are flowed through in the open channel (1) with irradiation bright
The water body of canal (1)；
Power supply structure (3) in the open channel (1), for fixing the quartz burner (2) and to the ultraviolet radiator
Manage (2) power supply；
The casing (4) of transparent setting, the casing (4) are set on the power supply structure (3) so that the quartz burner (2) is worn
Enter, and the casing (4) barrier water body is directly in contact with quartz burner (2)；
Current-limiting apparatus (6) in the open channel, flow velocity when for limiting open channel (1) interior water body by casing (4) and right
Water body in open channel (1) is filtered.
7. a kind of sewage water treatment method according to claim 6, it is characterised in that: the current-limiting apparatus (6) includes frame
(60), the first current limiting plate (61) being set on the frame (60) and the second current limliting matched with first current limiting plate (61)
Plate (62), first, second current limiting plate are set on the frame (60).
8. a kind of sewage water treatment method according to claim 7, it is characterised in that: first current limiting plate (61) is equipped with
First through hole (611), second current limiting plate (62) are equipped with the second through-hole (621).
9. a kind of sewage water treatment method according to claim 7, it is characterised in that: the frame (60) is equipped with described in confession
The sliding slot (601) of second current limiting plate (62) insertion, second current limiting plate (62) are equipped with and match with the sliding slot (601)
Ball (622).
10. a kind of sewage water treatment method according to claim 9, it is characterised in that: the frame (60) is equipped with and is used for
The driving cylinder (602) for driving second current limiting plate (62) to move up and down.
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| CN114014406A (en) * | 2021-11-09 | 2022-02-08 | 宋佳威 | Environment-friendly biological wastewater automatic purification treatment system and use method thereof |
| CN115400496A (en) * | 2022-08-24 | 2022-11-29 | 安徽欧石环保科技有限公司 | Sewage filtering device in primary sewage treatment system |
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