CN108793644A - A kind of sewage-treatment plant that sewage water denitrification efficiency can be improved - Google Patents
A kind of sewage-treatment plant that sewage water denitrification efficiency can be improved Download PDFInfo
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- CN108793644A CN108793644A CN201810995202.2A CN201810995202A CN108793644A CN 108793644 A CN108793644 A CN 108793644A CN 201810995202 A CN201810995202 A CN 201810995202A CN 108793644 A CN108793644 A CN 108793644A
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- 239000010865 sewage Substances 0.000 title claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 107
- 238000004062 sedimentation Methods 0.000 claims abstract description 64
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000001301 oxygen Substances 0.000 claims abstract description 36
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 36
- 239000006228 supernatant Substances 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000010992 reflux Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 21
- 230000000694 effects Effects 0.000 abstract description 10
- 229910002651 NO3 Inorganic materials 0.000 abstract description 5
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 abstract description 5
- 239000012141 concentrate Substances 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract description 2
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000004060 metabolic process Effects 0.000 description 2
- 238000012163 sequencing technique Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/286—Anaerobic digestion processes including two or more steps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
This application involves technical field of sewage more particularly to a kind of sewage-treatment plants that sewage water denitrification efficiency can be improved.The application is provided with two oxygen compatibility pools, is equivalent in AAO system postpositions SBR system, the setting of two oxygen compatibility pool alternate runs, sewage disposal process is uninterrupted, and sludge can be conserved again, and denitrogenation dephosphorizing efficiency is substantially improved；Inclined plate in sedimentation basin can guide sludge to flow, and sludge is allowed to concentrate convergence, promote the efficiency that sludge is conveyed to sludge concentration tank, and the returned sludge nitrate concentration into anaerobic pond is greatly reduced, and subsequent denitrogenation dephosphorizing efficiency is substantially improved；In the case where not changing tank body contour structures, by the way that inclined plate is arranged in inside, sludge can be guided to converge, promote sludge settling efficiency, scrap build is at low cost.By above structure, denitrogenates process for follow-up dephosphorization and sufficient sludge is provided, effectively improve the efficiency of the denitrogenation dephosphorizing of sewage-treatment plant, ensure the treatment effect of waste water.
Description
Technical field
This application involves technical field of sewage more particularly to a kind of sewage disposal dresses that sewage water denitrification efficiency can be improved
It sets.
Background technology
Currently, the Activated Sludge Process in sewage disposal, almost all is based on biology " anaerobism, anoxic, aerobic "
Growth metabolism is theoretical and realizes, i.e., the pollutants such as organic matter, nitrogen phosphorus in sewage in biological tank under varying environment, pass through
The growth metabolism effect of microorganism is removed, and realizes the purpose of purifying water body.Common sewage-treatment plant is with routine
Sewage treatment process is to rely on, as country is for the further severization of sewage drainage standard, many sewage-treatment plants
Processing water outlet cannot meet the requirement of discharge standard.
Invention content
In order to solve the above-mentioned technical problem above-mentioned technical problem or is at least partly solved, this application provides one kind can
Improve the sewage-treatment plant of sewage water denitrification efficiency.
A kind of sewage-treatment plant that sewage water denitrification efficiency can be improved of the application, including set gradually along drainage flow direction
In tank body：The oxygen compatibility pool of main water inlet tube, anaerobic pond, anoxic pond, aerobic tank, the first oxygen compatibility pool/second, sedimentation basin, water outlet,
The upstream of the anaerobic pond is equipped with preposition anoxic pond, and the upstream of the preposition anoxic pond is equipped with sludge concentration tank；The sedimentation basin
Interior sludge is delivered in the sludge concentration tank, and the partial reflux liquid of first oxygen compatibility pool and the second oxygen compatibility pool introduces respectively
The supernatant of the sludge concentration tank, the sludge concentration tank introduces the anoxic pond, and the sludge of the sludge concentration tank is through institute
It states preposition anoxic pond and enters the anaerobic pond；First oxygen compatibility pool and the second oxygen compatibility pool alternate run；
The bottom of the sedimentation basin is equipped with inclined plate, and the lower end of the inclined plate is connect with the bottom plate of the sedimentation basin, described oblique
The upper end of plate is connect with the first side wall of the sedimentation basin.
Optionally, the angle of the inclined plate and sedimentation basin bottom plate is 45-80 degree.
Optionally, the sludge in the sedimentation basin is delivered to the preposition anoxic pond by the first stripping tube, and described first
Stripping tube extends to the lower part of the sedimentation basin, the second side of the mud tube inlet of first stripping tube close to the sedimentation basin
Wall.
Optionally, in the lower part of the sedimentation basin, first stripping tube extends laterally to described along the second sidewall
The middle part of sedimentation basin, bottom plate of the mud tube inlet towards the sedimentation basin.
Optionally, the distance of the mud tube inlet to the sedimentation basin bottom plate is 10-50cm.
Optionally, the inclined plate connects mud tube inlet of the one end higher than first stripping tube of the first side wall.
Optionally, horn-like annular gear mud cylinder, the annular gear are connected at the mud tube inlet of first stripping tube
The mud cylinder small one end that is open is connect with the mud tube inlet.
Optionally, the sludge of the sludge concentration tank is sent through the second stripping tube to the preposition anoxic pond.
Optionally, further include Rinsing Area, the Rinsing Area is arranged between the sedimentation basin and water outlet, the sedimentation basin
Supernatant through the Rinsing Area enter the water outlet.
Above-mentioned technical proposal provided by the embodiments of the present application has the following advantages that compared with prior art：The application is provided with
Two oxygen compatibility pools are equivalent in AAO system postpositions SBR system, the setting of two oxygen compatibility pool alternate runs, sewage disposal process
Uninterruptedly, sludge can be conserved again, and denitrogenation dephosphorizing efficiency is substantially improved；Inclined plate in sedimentation basin can guide sludge stream
It is dynamic, it allows sludge to concentrate convergence, promotes the efficiency for conveying sludge to sludge concentration tank, the returned sludge nitrate into anaerobic pond is dense
Degree is greatly reduced, and subsequent denitrogenation dephosphorizing efficiency is substantially improved；In the case where not changing tank body contour structures, by inside
Inclined plate is set, sludge can be guided to converge, promotes sludge settling efficiency, scrap build is at low cost.It is follow-up by above structure
Dephosphorization denitrogenates process and provides sufficient sludge, effectively improves the efficiency of the denitrogenation dephosphorizing of sewage-treatment plant, ensures waste water
Treatment effect.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application
Example, and the principle together with specification for explaining the application.
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, for those of ordinary skill in the art
Speech, without having to pay creative labor, other drawings may also be obtained based on these drawings.
Fig. 1 is the elevation for the sewage-treatment plant that sewage water denitrification efficiency can be improved described in the embodiment of the present application；
Fig. 2 is the plan view for the sewage-treatment plant that sewage water denitrification efficiency can be improved described in the embodiment of the present application；
Fig. 3 is the side view for the sewage-treatment plant that sewage water denitrification efficiency can be improved described in the embodiment of the present application；
Fig. 4 is the work flow diagram for the sewage-treatment plant that sewage water denitrification efficiency can be improved described in the embodiment of the present application.
Wherein, 1, aerobic tank；3, anoxic pond；4, anaerobic pond；5, the first oxygen compatibility pool；6, the second oxygen compatibility pool；7, main water inlet tube；
9, preposition anoxic pond；10, sludge concentration tank；11, sedimentation basin；12, Rinsing Area；13, water outlet；19, the first stripping tube；191, ring
Shape keeps off mud cylinder.
Specific implementation mode
It, below will be in the embodiment of the present application to keep the purpose, technical scheme and advantage of the embodiment of the present application clearer
Technical solution be clearly and completely described, it is clear that described embodiment is a part of the embodiment of the application, without
It is whole embodiment.Based on the embodiment in the application, those of ordinary skill in the art are not making creative work
Under the premise of the every other embodiment that is obtained, shall fall in the protection scope of this application.
As depicted in figs. 1 and 2, a kind of sewage-treatment plant that sewage water denitrification efficiency can be improved of the application, including along sewage
Flow direction is successively set in tank body：Main water inlet tube 7, anaerobic pond 4, anoxic pond 3, aerobic tank 1, the first oxygen compatibility pool 5/ second
The upstream of oxygen compatibility pool 6, sedimentation basin 11, water outlet 13, the anaerobic pond 4 is equipped with preposition anoxic pond 9, the preposition anoxic pond 9
Upstream is equipped with sludge concentration tank 10；Sludge in the sedimentation basin 11 is delivered in the sludge concentration tank 10, and described first is simultaneous
The partial reflux liquid of oxygen pond 5 and the second oxygen compatibility pool 6 introduces the sludge concentration tank 10, the supernatant of the sludge concentration tank 10 respectively
Liquid introduces the anoxic pond 3, and the sludge of the sludge concentration tank 10 enters the anaerobic pond 4 through the preposition anoxic pond 9；It is described
6 alternate run of first oxygen compatibility pool 5 and the second oxygen compatibility pool；
The bottom of the sedimentation basin 11 is equipped with inclined plate, and the lower end of the inclined plate is connect with the bottom plate of the sedimentation basin 11, institute
The upper end for stating inclined plate is connect with the first side wall of the sedimentation basin 11.
In existing sewage treatment process, AAO (sewage treatment process of " anaerobic- anoxic- oxic ", Anaerobic-
Anoxic-Oxic) system generally comprises：Main water inlet tube 7, anaerobic pond 4, anoxic pond 3, aerobic tank 1, sedimentation basin 11, sludge condensation
Pond 10, has the function of synchronous denitrification dephosphorizing；SBR (sequencing batch active sludge, Sequencing Batch Reactor
Activated Sludge Process) system generally comprises：First oxygen compatibility pool 5, the second oxygen compatibility pool 6, sedimentation basin 11, are suitable for
Intermittent discharge and the larger occasion of changes in flow rate.
The application is provided with the first oxygen compatibility pool 5, second oxygen compatibility pool 6 the two oxygen compatibility pools, is equivalent in AAO system postpositions
SBR system, the setting of two oxygen compatibility pool alternate runs, sewage disposal process is uninterrupted, and sludge can be conserved again, and denitrogenation removes
Phosphorus efficiency is substantially improved；Inclined plate can guide sludge to flow, and allow the sludge at 11 bottom of sedimentation basin to concentrate convergence, promoted to sludge condensation
Pond 10 conveys the efficiency of sludge, and the returned sludge nitrate concentration into anaerobic pond 4 is greatly reduced, and subsequent denitrogenation is substantially improved
Dephosphorization efficiency；In the case where not changing tank body contour structures, by the way that inclined plate is arranged in inside, sludge can be guided to converge, carried
Sludge settling efficiency is risen, scrap build is at low cost.By above structure, denitrogenates process for follow-up dephosphorization and sufficient sludge is provided,
The efficiency for effectively improving the denitrogenation dephosphorizing of sewage-treatment plant ensures the treatment effect of waste water.
Optionally, the angle of the inclined plate and 11 bottom plate of sedimentation basin is 45-80 degree.Between 11 bottom plate of inclined plate and sedimentation basin
Angle is bigger, the easier convergence of sludge, but the area for converging region can also become larger, and is unfavorable for promoting sludge sink-efficiency；Accordingly
, the angle between 11 bottom plate of inclined plate and sedimentation basin is smaller, guides the effect of sludge poorer, but inclined plate occupies the area meeting of bottom plate
Become larger, the sludge convergence region reserved is just smaller, is conducive to sludge convergence；Therefore the angle of inclination of inclined plate also should be according to sludge work
Condition is flexibly selected, and the angle between 11 bottom plate of inclined plate and sedimentation basin is preferably set as 60 degree, to take into account guiding sludge
Ability and control sludge convergence region area purpose, reach best and draw sludge convergence effect.
Optionally, the sludge in the sedimentation basin 11 is delivered to the sludge concentration tank 10, institute by the first stripping tube 19
The lower part that the first stripping tube 19 extends to the sedimentation basin 11 is stated, the mud tube inlet of first stripping tube 19 is close to the precipitation
The second sidewall in pond 11.The conveying of existing pressure difference gravity flow sludge is changed to gas stripping type by the application；First, first stripping tube 19
Driving can be provided by existing oxygen compatibility pool, aerobic tank 1 with aerating system with gas, and without additional setting, improvement cost is low；Secondly,
Relatively with existing pressure difference gravity flow sludge mode of movement, the work of active drive sludge can be played using the first stripping tube 19
With promotion sludge transfer efficiency provides enough sludge for subsequent reactions, and phosphor-removing effect is promoted, it is ensured that wastewater treatment efficiency.Separately
Outside, inclined plate is arranged at the first side wall, and for the mud tube inlet of stripping tube close to second sidewall, the two is located at different side-walls；And
The stripping tube course of work is easy to make the disturbance of sludge generation nearby, inclined plate guiding can also sludge be accelerated to flow, by the two setting heavy
At the different location in shallow lake pond 11, it is possible to prevente effectively from flow disturbance phenomenon is spread, it is ensured that sludge condensation process in sedimentation basin 11
It is normally carried out.
Optionally, in the lower part of the sedimentation basin 11, first stripping tube 19 is extended laterally to along the second sidewall
The middle part of the sedimentation basin 11, bottom plate of the mud tube inlet towards the sedimentation basin 11.I.e. far from inclined plate, mud pipe is entered
Mouth is arranged as much as possible at the middle part of sedimentation basin 11, expands the sludge absorption region of the first stripping tube 19, promotes the first stripping tube
19 sludge transfer efficiency.
Optionally, the distance of the mud tube inlet to 11 bottom plate of the sedimentation basin is 10-50cm.According to the dirt of 11 bottom of sedimentation basin
The thickness of mud and the viscosity of sludge can flexibly select mud tube inlet to the distance of 11 bottom plate of sedimentation basin, be preferably arranged to
20cm can not only ensure the continuous conveying of sludge in this way, but also most of sludge of sedimentation basin 11 can be made to participate in cycle, reduce dirty
Mud remains probability, promotes sludge utilization rate.
Optionally, the inclined plate connects mud tube inlet of the one end higher than first stripping tube 19 of the first side wall.
Mud tube inlet is within the guidance field of inclined plate always, and the sludge in the region easily converges, and can be that the first stripping tube 19 carries
For enough sludge, the sludge quantity that the unit interval is transported to sludge concentration tank 10 is increased, sufficient dirt is provided for subsequent reactions
Mud, the dephosphorization and denitrification effect of lifting sewage processing unit.
Optionally, as shown in figures 1 and 3, it is connected with horn-like annular at the mud tube inlet of first stripping tube 19
Keep off mud cylinder 191, the small one end that is open of the annular gear mud cylinder 191 is connect with the mud tube inlet.Annular gear mud cylinder 191 can draw
The sludge for leading distant place is flowed to mud tube inlet, expands the range that the first stripping tube 19 absorbs sludge, and that reduces sedimentation basin 11 deposits mud
Amount；Annular gear mud cylinder 191 may also suppress the disturbance generated in sedimentation basin 11 by air lift simultaneously, in order to avoid disturbing influence water outlet effect
Fruit improves the deposition efficiency of sedimentation basin 11.
Optionally, the sludge of the sludge concentration tank 10 is sent through the second stripping tube to the preposition anoxic pond 9.I.e. by sludge
Concentration basin 10 is also changed to gas stripping type to the conveying of the sludge of preposition anoxic pond 9, and driving gas is provided by existing gas explosion system, dirty
Mud conveying energy consumption bottom, transfer efficiency are high.
Optionally, as shown in Figure 1 to Figure 3, the application further includes Rinsing Area 12, and the Rinsing Area 12 is arranged in the precipitation
Between pond 11 and water outlet 13, the supernatant of the sedimentation basin 11 enters the water outlet 13 through the Rinsing Area 12.Precipitate
Supernatant after pond 11 is precipitated is introduced into Rinsing Area 12, is then discharged again into water outlet 13 by Rinsing Area 12, Rinsing Area 12 can
To play certain cushioning effect, the sludge placed in sedimentation basin 11 is discharged.
For convenience of the application is understood, shown in Fig. 4, the main working process of the application is introduced：Sewage from
After main water inlet tube 7 enters, most of sewage is sent to anaerobic pond 4, then in turn through anoxic pond 3, aerobic tank 1, the first oxygen compatibility pool 5
Or second oxygen compatibility pool 6, sedimentation basin 11, Rinsing Area 12, water outlet 13 see which oxygen compatibility pool is in after the water in aerobic tank 1 comes out
Which oxygen compatibility pool is operating status be put into；The supernatant of oxygen compatibility pool enters sedimentation basin 11, and partial reflux liquid enters sludge concentration tank
10；The supernatant of sedimentation basin 11 enters Rinsing Area 12, and the returned sludge after precipitation enters sludge concentration tank through the first stripping tube 19
10；The supernatant of sludge concentration tank 10 is sent to anoxic pond 3, and the sludge after concentration is sent through the second stripping tube to preposition anoxic pond 99,
Then enter anaerobic pond 4 from preposition anoxic pond 99 again.Sewage is discharged after above-mentioned process from water outlet 13, sewage disposal
Sludge, phegma in device etc. continue to participate in subsequent sewage disposal process.Sludge in sedimentation basin 11 is through the first stripping tube
19 enter sludge concentration tank 10, and the returned sludge in sludge concentration tank 10 carries out instead through the second stripping tube into preposition anoxic pond 9
Denitrogenation is nitrified, reduces the nitrate concentration in returned sludge, the returned sludge in preposition anoxic pond 9 enters back into anaerobic pond 4, relatively low
The nitrate of concentration can generate minor impact to dephosphorization, to ensure that the dephosphorization efficiency of system.
It should be noted that herein, the relational terms of such as " first " and " second " or the like are used merely to one
A entity or operation with another entity or operate distinguish, without necessarily requiring or implying these entities or operation it
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to
Cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements includes not only those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or setting
Standby intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in the process, method, article or apparatus that includes the element.
The above is only the specific implementation mode of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can in other embodiments be realized in the case where not departing from spirit herein or range.Therefore, the application
These embodiments as described herein are not intended to be limited to, and are to fit to and apllied principle and features of novelty phase one herein
The widest range caused.
Claims (9)
1. a kind of sewage-treatment plant that sewage water denitrification efficiency can be improved, which is characterized in that including along drainage flow direction successively
It is arranged in tank body：The oxygen compatibility pool of main water inlet tube, anaerobic pond, anoxic pond, aerobic tank, the first oxygen compatibility pool/second, goes out sedimentation basin
The upstream at the mouth of a river, the anaerobic pond is equipped with preposition anoxic pond, and the upstream of the preposition anoxic pond is equipped with sludge concentration tank；It is described heavy
Sludge in the pond of shallow lake is delivered in the sludge concentration tank, the partial reflux liquid difference of first oxygen compatibility pool and the second oxygen compatibility pool
The sludge concentration tank is introduced, the supernatant of the sludge concentration tank introduces the anoxic pond, the sludge of the sludge concentration tank
Enter the anaerobic pond through the preposition anoxic pond；First oxygen compatibility pool and the second oxygen compatibility pool alternate run；
The bottom of the sedimentation basin is equipped with inclined plate, and the lower end of the inclined plate is connect with the bottom plate of the sedimentation basin, the inclined plate
Upper end is connect with the first side wall of the sedimentation basin.
2. sewage-treatment plant according to claim 1, which is characterized in that the angle of the inclined plate and sedimentation basin bottom plate is
45-80 degree.
3. sewage-treatment plant according to claim 1, which is characterized in that the sludge in the sedimentation basin passes through the first gas
It carries pipe and is delivered to the preposition anoxic pond, first stripping tube extends to the lower part of the sedimentation basin, first stripping tube
Mud tube inlet close to the sedimentation basin second sidewall.
4. sewage-treatment plant according to claim 3, which is characterized in that in the lower part of the sedimentation basin, described first
Stripping tube extends laterally to the middle part of the sedimentation basin along the second sidewall, and the mud tube inlet is towards the bottom of the sedimentation basin
Plate.
5. sewage-treatment plant according to claim 3, which is characterized in that the mud tube inlet to the sedimentation basin bottom plate
Distance be 10-50cm.
6. sewage-treatment plant according to claim 3, which is characterized in that the inclined plate connects the one of the first side wall
Mud tube inlet of the end higher than first stripping tube.
7. according to claim 3-6 any one of them sewage-treatment plants, which is characterized in that the mud pipe of first stripping tube
Inlet is connected with horn-like annular gear mud cylinder, and the annular gear mud cylinder small one end that is open is connect with the mud tube inlet.
8. sewage-treatment plant according to claim 1, which is characterized in that the sludge of the sludge concentration tank is through the second gas
Pipe is carried to send to the preposition anoxic pond.
9. sewage-treatment plant according to claim 1, which is characterized in that further include Rinsing Area, the Rinsing Area setting
Between the sedimentation basin and water outlet, the supernatant of the sedimentation basin enters the water outlet through the Rinsing Area.
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| CN201810995202.2A CN108793644A (en) | 2018-08-29 | 2018-08-29 | A kind of sewage-treatment plant that sewage water denitrification efficiency can be improved |
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Address after: 15 / F, building 4, Taihua Jinmao international, No.16, Fenghui South Road, high tech Zone, Xi'an City, Shaanxi Province, 710075 Applicant after: China chemical langzheng Environmental Protection Technology Co.,Ltd. Address before: 15 / F, building 4, Taihua Jinmao international, No.16, Fenghui South Road, high tech Zone, Xi'an City, Shaanxi Province, 710075 Applicant before: SHAANXI LANGZHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
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