CN206654773U - The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage - Google Patents
The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage Download PDFInfo
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- CN206654773U CN206654773U CN201720337880.0U CN201720337880U CN206654773U CN 206654773 U CN206654773 U CN 206654773U CN 201720337880 U CN201720337880 U CN 201720337880U CN 206654773 U CN206654773 U CN 206654773U
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- aeration tank
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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 device of the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model, including city domestic sewage water tank, vertical internal-external double circulation aeration tank and the vertical sedimentation basin set gradually, the city domestic sewage tank top delivery port is connected with vertical internal-external double circulation aeration tank top side water inlet by water pipe, intake pump is provided with the water pipe and is inserted into vertical internal-external double circulation aeration tank bottom, the vertical internal-external double circulation aeration tank opposite side top delivery port is connected with the water inlet at the top of vertical sedimentation basin.Due to the region of different dissolved oxygen gradient internally be present in the vertical internal-external double circulation aeration tank of the utility model, therefore certain complete nitrification and denitrification condition is created, enhance the synchronous removal ability of organic matter in sewage, nitrogen, phosphorus etc., nitrogen removal rate improves 20% 30% compared with traditional aeration tank, while without nitrification liquid reflux course.
Description
Technical field
The utility model belongs to technical field of biological sewage treatment, and in particular to a kind of vertical internal-external double circulation continuous stream work
The device of skill Treating Municipal Sewage.
Background technology
With social development and the quickening of urbanization process, urban wastewater discharge increasingly increases.According to statistics, only 2014
First quarter China's urban wastewater treatment firm is accumulative to build up 3622, and day handles sewage ability 1.53 × 108m3, operating load rate reaches
79.9%.And municipal sewage treatment is a high energy-consuming industry, data shows that municipal sewage plant's average current drain value reaches
0.285kWh/m3, total electricity consumption occupies the 60% of sewage plant operating cost, so reducing sewage disposal energy consumption can effectively subtract
The operation cost of few sewage treatment plant, improve the utilization ratio of fund.
Municipal sewage treatment both domestic and external mainly uses activated sludge process, and aerobic reaction tank needs a large amount of in activated sludge process
Aeration, for the organic matter in aerobic degradation water.According to statistics, core biochemical treatment unit power consumption accounts in sewage plant
The 50%-70% of whole technique, is concentrated mainly in air blower, agitator and interior external reflux pump, and interior external reflux pump herein is made
With being backflow nitrification liquid and sludge.In activated sludge process, aeration energy consumption accounts for the 55.6% of total energy consumption.
Traditional handicraft handles sewage as shown in figure 1, municipal sewage is stable sewage by constant flow pump 2.1 from raw water water tank 1
It is sent into the traditional reactor 1 that dischargeable capacity is 36L, its outer connection air compressor 2.3, spinner flowmeter 2.4；Aeration tank 2
Water outlet enters vertical sedimentation basin 3 by difference in height, after precipitation water outlet flowed out through downflow weir 3.1, is provided with mud discharging mouth in sedimentation basin 3
3.2, sludge is back near the aeration tube of aeration tank through reflux pump 3.3.
At present, disclosed membrane Bio-reactor Technology, most of is Integrated Processing Unit, involved processing unit
It is the structure of independent separate formula, not only main equipment volume is excessive, and system is numerous and diverse, and manufacturing cost is also high, operating cost
Also high, synchronous nitration and denitrification ability is low, easily causes the deposition of aeration tank bottom, and utilization rate reduces.
Utility model content
To achieve the above object, the utility model provides a kind of vertical internal-external double circulation continuous flow process Treating Municipal Sewage
Device, solve that synchronous nitration and denitrification ability in the prior art is low, another reflux increase investment, the oxygen utilization rate of setting is low
The problem of.
The utility model is the technical scheme adopted is that the dress of vertical internal-external double circulation continuous flow process Treating Municipal Sewage
Put, including city domestic sewage water tank, vertical internal-external double circulation aeration tank and the vertical sedimentation basin set gradually, the city
Sanitary sewage tank top delivery port is connected with vertical internal-external double circulation aeration tank top side water inlet by water pipe, the water
Intake pump is provided with pipe and is inserted into vertical internal-external double circulation aeration tank bottom, the vertical internal-external double circulation aeration tank is another
Side roof part delivery port is connected with the water inlet at the top of vertical sedimentation basin, is provided with the vertical internal-external double circulation aeration tank
The deflector of horizontal L-type, the riser of the deflector are located at vertical internal-external double circulation aeration tank water inlet side and riser tail end court
Under, the transverse slat tail end of the deflector is located at vertical internal-external double circulation aeration tank delivery port side, and the transverse slat and riser are with erecting
To having space between the inwall of internal-external double circulation aeration tank both sides, the deflector lower space region and upper space region ratio
Example about 7:1, the deflector transverse slat surface is provided with the horizontal booster plate of inner hollow, and the flow increasing plate surface is provided with more
Individual air nozzle, the booster plate inside connect with air pump, the bottom of the vertical internal-external double circulation aeration tank water inlet side
Boring aeration pipe is provided with, the boring aeration pipe is connected with air pump to extension and gas flow is provided with boring aeration pipe
Meter.
It is of the present utility model to be further characterized in that,
Further, downflow weir is provided with the top of the vertical sedimentation basin, the vertical sedimentation basin bottom is circumscribed with
Discharge pipeline, the vertical sedimentation basin bottom are provided with the bottom of refluxing opening and vertical internal-external double circulation aeration tank water inlet side
By pipeline communication, sludge reflux pump is provided with the pipeline.
Further, the deflector riser and vertical direction angle are 345 ° -355 °, the deflector transverse slat and level
Direction is into 5 ° of -15 ° of inclination angles.
Further, the vertical internal-external double circulation aeration tank delivery port side is provided with temperature and dissolved oxygen probe, institute
State temperature and dissolved oxygen probe is inserted into space between deflector transverse slat and vertical internal-external double circulation aeration tank inwall.
The beneficial effects of the utility model are：
(1) municipal sewage on the inside of vertical internal-external double circulation aeration tank baffle at bottom riser by being aerated, and bubble is by water conservancy diversion
The stop of plate transverse slat forms water circulation, makes low-oxygen area, Zhong Yang areas and hyperoxia area while is present in same vertical internal-external double circulation
In aeration tank, reaction tank removal efficiency is improved compared with traditional handicraft, reduces the quantity of reaction tank, reduces reaction tank and takes up an area
Area, while reduce the power consumption of middle oxygen and low-oxygen area stirring, flowed by current in vertical internal-external double circulation aeration tank
It is stirred, capital cost and operating cost is greatly reduced.Vertical internal-external double circulation aeration tank base sludge is by current simultaneously
The impact circulated, it is impossible to deposit to bottom and form dead band, but participate in whole course of reaction, improving aeration tank has
Utilization rate is imitated, consequently reduces capital expenditure.
(2) a part of bubble erects in vertical internal-external double circulation aeration tank internal circulation flow, a part of bubble along deflector
Plate and the flowing of deflector transverse slat, finally just overflow from free surface, so the structure of vertical internal-external double circulation aeration tank makes bubble
Holdup time in sewage is elongated, and stroke increases, and this makes aerobic microbiological obtain more oxygen amount, with traditional aeration tank phase
Efficiency 10%-15% is aerated than improving, reduces aeration energy consumption.
(3) common activated sludge process complete nitrification and denitrification in aeration tank is relatively low, vertical internal-external double circulation aeration tank
Due to the region of different dissolved oxygen gradient internally be present, therefore certain complete nitrification and denitrification condition is created, enhanced
The synchronous removal ability of organic matter, nitrogen, phosphorus in sewage etc., nitrogen removal rate improves 20%-30% compared with traditional aeration tank,
Simultaneously without nitrification liquid reflux course, reduce capital expenditure and operating cost.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings；
Fig. 1 is the structural representation of Traditional continuous flow Process for Treating Municipal；
Fig. 2 is the apparatus structure schematic diagram of the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model；
Fig. 3 is that the pulling flow type of the method for the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model is vertical
React schematic diagram in Two-way Cycle aeration tank.
In figure, 1. city domestic sewage water tanks, 2. vertical internal-external double circulation aeration tanks, 3. vertical sedimentation basins；
21. intake pump, 22. temperature and dissolved oxygen probe, 23. deflectors, 24. boring aeration pipes, 25. air pumps, 26. gas
Flowmeter body, 27. booster plates；
31. downflow weir, 32. mud discharging mouths, 33. sludge reflux pumps.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
The device of the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model, as shown in Fig. 2 including according to
The city domestic sewage water tank 1 of secondary setting, vertical internal-external double circulation aeration tank 2 and vertical sedimentation basin 3, the urban life are dirty
The top delivery port of water tank 1 is connected with the vertical top side water inlet of internal-external double circulation aeration tank 2 by water pipe, on the water pipe
It is provided with intake pump 21 and is inserted into the vertical bottom of internal-external double circulation aeration tank 2, the vertical internal-external double circulation aeration tank 2 is another
Side roof part delivery port is connected with the water inlet at the top of vertical sedimentation basin 3, is set in the vertical internal-external double circulation aeration tank 2
There is the deflector 23 of horizontal L-type, the riser of the deflector 23 is located at the vertical water inlet side of internal-external double circulation aeration tank 2 and riser
Down, the transverse slat tail end of the deflector 23 is located at the vertical delivery port side of internal-external double circulation aeration tank 2 to tail end, the transverse slat and
There is space between riser and the both sides inwall of vertical internal-external double circulation aeration tank 2, the lower space region of deflector 23 with it is upper
Portion's area of space ratio is about 7:1, the transverse slat surface of deflector 23 is provided with the horizontal booster plate 27 of inner hollow, the increasing
The surface of flowing plate 27 is provided with multiple air nozzles, and the inside of booster plate 27 connects with air pump 25, the vertical internal-external double circulation
The bottom of the water inlet side of aeration tank 2 is provided with boring aeration pipe 24, and the boring aeration pipe 24 connects to extension and air pump 25
Connect, and gas flowmeter 26 is provided with boring aeration pipe 24.
The top of vertical sedimentation basin 3 is provided with downflow weir 31, and the bottom of vertical sedimentation basin 3 is circumscribed with discharge pipeline
32, the bottom of vertical sedimentation basin 3 is provided with refluxing opening and the bottom of the vertical water inlet side of internal-external double circulation aeration tank 2 leads to
Piping is connected, and sludge reflux pump 33 is provided with the pipeline.
The riser of deflector 23 is 345-355 ° with vertical direction angle, and the transverse slat of deflector 23 has with horizontal direction
5-15 ° of inclination angle.
The vertical delivery port side of internal-external double circulation aeration tank 2 is provided with temperature and dissolved oxygen probe 22, the temperature
And dissolved oxygen probe 22 is inserted into the space between the transverse slat of deflector 23 and the vertical inwall of internal-external double circulation aeration tank 2.
The method of the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model, as shown in figure 3, specifically pressing
Carried out according to following steps：
Step 1, configure sludge
Sludge source is prepared sludge concentration and existed in municipal sewage plant aeration tank in vertical internal-external double circulation aeration tank
3000-4000mg/L sludge is inoculated with, it is vexed expose 1-2 days after start to intake, inflow daily gradually increase make microorganism by
Gradually it is applicable, is continued to run with 1 day to after reaching design water, startup stage terminates, and the experiment startup optimization time was at 1 week or so；
Step 2, aeration prepare
System operation：Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in reactor, is started simultaneously at
Continuous aeration, Dissolved Oxygen concentration Control is in 2.0-3.0mg/L, hydraulic detention time 8h, return sludge ratio 100%；
Step 3, aeration process
After air enters vertical internal-external double circulation aeration tank 2, minute bubbles are divided into and along water conservancy diversion by boring aeration pipe 24
The riser of plate 23 enters pond body, and then bubble rises to the transverse slat of deflector 23, is stopped by it, horizontal movement to the transverse slat side of deflector 23
Edge, a part of bubble overflow from the free surface of pond body；Some another bubble no spilling water surface in the presence of current, and
It is with water movement, which part bubble is stopped by the vertical inwall of internal-external double circulation aeration tank 2 in the region below of deflector 23
Move downward, then flowed with the rising of aeration, form clockwise vortex；Another part returns with the upper liquid of deflector 23
Flow to the vertical bottom of internal-external double circulation aeration tank 2 and as aeration rises again, formed it is counterclockwise circulate, i.e., inside and outside pair
Shuttling movement form；
The gas being detained in the following mixed liquor of the transverse slat of deflector 23, in the presence of aeration, core flow velocity is slow,
More outside flow velocity is bigger, and it is low-oxygen area to make the Chi Nei space center region below the transverse slat of deflector 23, is outwards Zhong Yang areas, edge
For hyperoxia area, trizonal scope changes with aeration quantity size；Aeration quantity increase when, hyperoxia regional extent is big, anoxic and
The scope in middle oxygen region is sequentially reduced, and when aeration quantity reduces, hyperoxia regional extent is small, and the scope in anoxic and middle oxygen region increases successively
Greatly；Some minute bubbles is detained with current in the transverse slat of deflector 23 liquid mixed above, in helping for the air nozzle of booster plate 27
Under power, with current along deflector reverse movement, the vertical bottom of internal-external double circulation aeration tank 2 is eventually passed back to, with entering for aeration
Row rises again, and then forms shuttling movement；
Between the transverse slat of deflector 23 and the vertical bottom plate of internal-external double circulation aeration tank 2 dissolved oxygen concentration from center to the periphery by
Edged up height, and organic matter degradation occurs mainly in hyperoxia region, and titanium dioxide can be directly oxidized to herein for small organic molecule
Carbon and water；For molecular structure it is complicated, be difficult to biodegradable organic matter and can complete acidification hydrolization in middle oxygen or low oxygen area
After be transported to this, continue to complete oxidizing process；Anoxic and the presence in middle oxygen region, are provided favourable for microorganism denitrification
Condition, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, improve aeration tank simultaneous nitrification and denitrification
Nitrification efficiency.
The method of the vertical internal-external double circulation continuous flow process Treating Municipal Sewage of the utility model, municipal sewage are given birth to from city
Sewage water tank 1 living is stably sent into sewage by intake pump 21 in the vertical internal-external double circulation aeration tank 2 that dischargeable capacity is 36L,
The riser and transverse slat of deflector 23 of the vertical internal-external double circulation aeration tank 2 in it respectively with vertically and horizontally into 15 degree
Angle is intersected, and by temperature and the on-line monitoring change of dissolved oxygen probe 22, while has boring aeration pipe 24 on the inside of the riser of deflector 23,
Its outer connection and gas flow meter 2.6 of air pump 25；The vertical water outlet of internal-external double circulation aeration tank 2 enters vertical-flow by difference in height
Sedimentation basin 3, after precipitation water outlet flowed out through downflow weir 31, is provided with mud discharging mouth 32 in vertical sedimentation basin 3, sludge is through reflux pump 3.3
It is back near the vertical aeration tube 24 of internal-external double circulation aeration tank 2.
23 L-shaped design of deflector, this L-type deflector 23 effectively can collect bubble, after ensureing that bubble rises, energy
It is enough to be stopped completely by deflector 23, move to form loop structure along deflector 23, the gas after collection can have dynamic enough
Power continues to drive top circulation.The space of the vertical side wall of internal-external double circulation aeration tank 2 of distance of deflector 23 ensures top simultaneously
Circulating reflux is to bottom, and 5 ° of -15 ° of inclination angles are advantageous to sludge and return to bottom, and the air nozzle of booster plate 27 sprays gas, there is provided auxiliary
Power, do not produce big quantity set mud phenomenon on the top of deflector 23, and do not influence the overall cyclic process in top.
Embodiment
Experiment uses city domestic sewage, and for raw water, specific water quality is as follows：COD concentration is 250~320mg/L, NH4- N is dense
Spend for 10~15mg/L, TN concentration is 10~20mg/L, TP concentration is 2~6mg/L.Vertical internal-external double circulation aeration tank 2 is by having
Machine glass plate is made, long 0.3m, wide 0.3m, high 0.5m, available depth 0.4m, dischargeable capacity 36L.
Carrying out practically is as follows：
1) two contrast reaction tank sludge derive from municipal sewage plant aeration tank, and it is 4000mg/ to be made into sludge concentration
L, before testing commencement of commercial operation, culturing sludge 1 week, it is active to recover its.
2) normal operating phase：
Two contrast reaction tanks are controlled by identical operational mode：
1. hydraulic detention time is 8h, sludge age 18d；
2. using continuum micromeehanics pattern, flow of inlet water 4.5L/h, sludge reflux amount ratio is 100%, and water inlet aeration is simultaneously
Carry out, dissolved oxygen is controlled in 2.0mg/L, using sludge concentration in regular instantaneous spoil disposal control reaction tank.
3. experimental result is as shown in table 1 below,
After stable, traditional reactor effluent COD concentration is 20-50mg/L, average removal rate 88%；Vertical pair is followed
Ring reaction tank effluent COD concentration is 15.0~30.0mg/L, clearance is maintained at more than 90%；Two reaction tanks contrast NH4- N is gone
Except rate is respectively 82.54% and 95.80%, TN is that clearance is respectively that 87.14% and 91.24%, TP clearances reach
More than 90%.The vertical contaminant removal efficiency of Two-way Cycle reaction tank 2 is higher than traditional reaction tank more than 90%.Dissolved oxygen
Monitoring result is shown：When to reach water outlet dissolved oxygen be 2.0mg/l, vertical Two-way Cycle reaction tank aeration quantity is 0.12L/min, tradition
Reactor aeration quantity is 0.15L/min, and vertical Two-way Cycle reaction tank has saved aeration energy consumption.
Table 1
Preferred embodiment of the present utility model is the foregoing is only, is not intended to limit protection model of the present utility model
Enclose.All made within spirit of the present utility model and principle any modification, equivalent substitution and improvements etc., are all contained in this reality
With in new protection domain.
Claims (4)
1. the device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage, it is characterised in that including the city set gradually
City's sanitary sewage water tank (1), vertical internal-external double circulation aeration tank (2) and vertical sedimentation basin (3), the city domestic sewage water
Case (1) top delivery port is connected with vertical internal-external double circulation aeration tank (2) top side water inlet by water pipe, on the water pipe
It is provided with intake pump (21) and is inserted into vertical internal-external double circulation aeration tank (2) bottom, the vertical internal-external double circulation aeration tank
(2) opposite side top delivery port is connected with the water inlet at the top of vertical sedimentation basin (3), the vertical internal-external double circulation aeration
The deflector (23) of horizontal L-type is provided with pond (2), the riser of the deflector (23) is located at vertical internal-external double circulation aeration tank
(2) water inlet side and riser tail end is down, the transverse slat tail end of the deflector (23) is located at vertical internal-external double circulation aeration tank
(2) delivery port side, there is space, institute between the transverse slat and riser and vertical internal-external double circulation aeration tank (2) both sides inwall
It is 7 that deflector (23) following area of space, which is stated, with deflector upper space Domain Volume ratio:1, deflector (23) horizontal board table
Face is provided with the horizontal booster plate (27) of inner hollow, and booster plate (27) surface is provided with multiple air nozzles, the flow increasing
Connected inside plate (27) with air pump (25), the bottom of described vertical internal-external double circulation aeration tank (2) water inlet side is provided with
Boring aeration pipe (24), the boring aeration pipe (24) is connected to extension with air pump (25), and is set on boring aeration pipe (24)
It is equipped with gas flowmeter (26).
2. the device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage according to claim 1, its feature exist
In vertical sedimentation basin (3) top is provided with downflow weir (31), and vertical sedimentation basin (3) bottom is circumscribed with spoil disposal
Manage (32), vertical sedimentation basin (3) bottom is provided with refluxing opening and vertical internal-external double circulation aeration tank (2) water inlet side
Bottom by pipeline communication, be provided with sludge reflux pump (33) on the pipeline.
3. the device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage according to claim 1, its feature exist
In deflector (23) riser is 345-355 ° with vertical direction angle, and deflector (23) transverse slat has with horizontal direction
5-15 ° of inclination angle.
4. the device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage according to claim 1, its feature exist
, described vertical internal-external double circulation aeration tank (2) delivery port side is provided with temperature and dissolved oxygen probe (22), the temperature and
Dissolved oxygen probe (22) is inserted into the space between deflector (23) transverse slat and vertical internal-external double circulation aeration tank (2) inwall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337880.0U CN206654773U (en) | 2017-03-31 | 2017-03-31 | The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720337880.0U CN206654773U (en) | 2017-03-31 | 2017-03-31 | The device of vertical internal-external double circulation continuous flow process Treating Municipal Sewage |
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| CN206654773U true CN206654773U (en) | 2017-11-21 |
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ID=60316678
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745712A (en) * | 2017-03-31 | 2017-05-31 | 长春工程学院 | The device and method of vertical internal-external double circulation continuous flow process Treating Municipal Sewage |
| CN106745712B (en) * | 2017-03-31 | 2024-04-26 | 长春工程学院 | Device and method for treating urban sewage by vertical internal and external double-circulation continuous flow process |
-
2017
- 2017-03-31 CN CN201720337880.0U patent/CN206654773U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106745712A (en) * | 2017-03-31 | 2017-05-31 | 长春工程学院 | The device and method of vertical internal-external double circulation continuous flow process Treating Municipal Sewage |
| CN106745712B (en) * | 2017-03-31 | 2024-04-26 | 长春工程学院 | Device and method for treating urban sewage by vertical internal and external double-circulation continuous flow process |
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