CN206654778U - The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage - Google Patents
The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage Download PDFInfo
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- CN206654778U CN206654778U CN201720337902.3U CN201720337902U CN206654778U CN 206654778 U CN206654778 U CN 206654778U CN 201720337902 U CN201720337902 U CN 201720337902U CN 206654778 U CN206654778 U CN 206654778U
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Abstract
The device of the vertical inside and outside three circulations continuous flow process Treating Municipal Sewage of the utility model, including the municipal sewage water tank, vertical inside and outside three circulated aeration tanks and vertical sedimentation basin set gradually, the municipal sewage tank top delivery port is connected with vertical inside and outside three circulated aeration tank top side water inlets by water pipe, intake pump is provided with the water pipe and is inserted into vertical inside and outside three circulated aeration tank bottoms, the vertical inside and outside three circulated aeration tank opposite side top delivery ports are connected with the water inlet at the top of vertical sedimentation basin.Vertical inside and outside three recirculation reactors of the utility model are compared with traditional reactor, anoxic zone volume is added equivalent to aeration zone volume is reduced, on the premise of aerobic zone treatment effeciency is ensured, improve anoxic zone disposal ability, the ability of reactor denitrification, synchronous nitration and denitrification is enhanced, is more suitable for for low carbon-nitrogen ratio sewage.
Description
Technical field
The utility model belongs to technical field of biological sewage treatment, and in particular to a kind of vertical inside and outside three circulations 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.
For traditional aeration mode more using horizontally disposed, aerator is dispersed in aeration tank bottom, and bubble is opened by aerator outlet
Begin to rise, lifting height is the distance of aerator and the water surface, and distance is relatively short, the limited time with waste water.Therefore
It is relatively low to there is oxygen transfer efficiency, sewage limits with insufficient wait of bubble contact.Because aerator position limits, aeration outlet
There is 15-20cm distance with aeration tank bottom, current can not have influence on aeration tank bottom, therefore cause the deposition of aeration tank bottom,
Utilization rate reduces.
With our people's growth in the living standard, the change of dietary structure, the groups of contaminants of municipal sewage into and ratio
Also there is corresponding change, nitrogen content increase, the situation of low ratio of carbon to ammonium occur, traditional biological denitrification process plays to denitrogenation of waste water
Important function, but still suffer from many problems.Substantial amounts of oxygen need to be consumed as ammonia nitrogen nitrifies completely, adds power consumption.To low
The shortcomings of waste water of carbon-nitrogen ratio, also needs additional carbon, technological process length, and floor space is big, and capital expenditure is high.
Utility model content
To achieve the above object, the utility model provides a kind of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage
Device, solve aeration tank bottom deposition in the prior art, anaerobic/anoxic environment space deficiency, aeration tank denitrification ability is relatively low
The problem of.
The utility model is the technical scheme adopted is that the dress of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage
Put, including municipal sewage water tank, vertical inside and outside three circulated aeration tanks and the vertical sedimentation basin set gradually, the municipal sewage
Tank top delivery port is connected with vertical inside and outside three circulated aeration tank top side water inlets by water pipe, is set on the water pipe
There is intake pump and be inserted into vertical inside and outside three circulated aeration tank bottoms, go out at the top of the vertical inside and outside three circulated aeration tank opposite sides
The mouth of a river is connected with the water inlet at the top of vertical sedimentation basin, and horizontal L-type is provided with vertical inside and outside three circulated aeration tanks
Deflector, the riser of the deflector is located at three circulated aeration tank water inlet sides inside and outside vertical and riser tail end is down, described
The transverse slat tail end of deflector is positioned at vertical inside and outside three circulated aeration tank delivery port sides, the transverse slat and riser and vertical inside and outside three
There is space, the deflector upper central portion is provided with water flow partition board, the water conservancy diversion between the inwall of circulated aeration tank both sides
Vertical inside and outside three circulated aeration tank delivery port sides are provided with air baffle above plate, the water flow partition board with the horizontal
45 °, with the horizontal 115 °, the bottom of the vertical inside and outside three circulated aeration tank water inlet sides is provided with the air baffle
Boring aeration pipe, the boring aeration pipe are connected with air pump to extension and gas flowmeter are provided with boring aeration pipe.
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 refluxing opening and the bottom of vertical inside and outside three circulated aeration tank water inlet sides
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
Into 5 ° of -15 ° of inclination angles, the volume ratio of the deflector riser bottom water flow spaces and top water flow spaces is about 2 in direction:1.
Further, the vertical inside and outside three circulated aeration tank delivery port sides are provided with temperature and dissolved oxygen probe, institute
State temperature and dissolved oxygen probe is inserted into space between deflector transverse slat and vertical inside and outside three circulated aeration tank inwalls.
The beneficial effects of the utility model are：
(1) aeration tank inner deflector moves down, and creates the loop structure of top anaerobic/anoxic, increases aeration tank anaerobism and lacks
Oxygen environment space, advantageously in reactor denitrogenation.
(2) for the sewage that carbon-nitrogen ratio is 5-6, microorganism denitrification denitrogenation needs sufficient organic matter, in traditional handicraft
Organic matter is largely consumed by aeration, causes Organic substance in water insufficient, denitrification process will be affected.This technique, which have compressed, to be led
The volume in flowing plate bottom high-solubility oxygen region, the cyclic space of top low dissolved oxygen is formd, be that 5-6 is organic for carbon-nitrogen ratio
The sewage that thing is less, nitrogen element content is high, extend the denitrifying residence time；Followed due to foring upper and lower and outside 3
Ring structure, it can constantly provide organic matter in microorganism denitrification process as denitrifying carbon source, ensure denitrification process
It is normally carried out.
(3) holdup time of bubble in the reactor is elongated, and stroke increases, and improves the utilization rate of oxygen, reduces sludge and returns
Flow, simultaneous reactions device base sludge are impacted by water circulation flowing, it is impossible to and deposit to reactor bottom and form dead band, but
Participate in whole course of reaction, improve aeration tank effective rate of utilization, consequently reduce capital expenditure.
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 inside and outside three circulations continuous flow process Treating Municipal Sewage of the utility model；
Fig. 3 is vertical inside and outside the three of the vertical inside and outside three circulations continuous flow process Treating Municipal Sewage methods of the utility model to follow
React schematic diagram in ring aeration tank.
In figure, 1. municipal sewage water tanks, 2. vertical inside and outside three circulated 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. air baffles, 28. water flow partition boards；
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 inside and outside three circulations continuous flow process Treating Municipal Sewages of the utility model, as shown in Fig. 2 including according to
The municipal sewage water tank 1 of secondary setting, vertical inside and outside three circulated aeration tanks 2 and vertical sedimentation basin 3, the municipal sewage water tank 1
Top delivery port is connected with the vertical inside and outside top side water inlet of three circulated aeration tank 2 by water pipe, is provided with the water pipe
Intake pump 21 and the vertical inside and outside bottom of three circulated aeration tank 2 is inserted into, at the top of the vertical inside and outside opposite side of three circulated aeration tank 2
Delivery port is connected with the water inlet at the top of vertical sedimentation basin 3, and horizontal L is provided with vertical inside and outside three circulated aeration tanks 2
The deflector 23 of type, the riser of the deflector 23 is positioned at the vertical inside and outside water inlet side of three circulated aeration tank 2 and riser tail end
Down, the transverse slat tail end of the deflector 23 is positioned at the vertical inside and outside delivery port side of three circulated aeration tank 2, the transverse slat and riser
There is space between the vertical inside and outside both sides inwall of three circulated aeration tank 2, the upper central portion of deflector 23 is provided with water
Dividing plate 28 is flowed, the top of deflector 23 is provided with air baffle 27 close to the vertical inside and outside delivery port side of three circulated aeration tank 2,
The water flow partition board 28 is with the horizontal 45 °, and with the horizontal 115 °, vertical inside and outside three circulation exposes the air baffle 27
The bottom of the water inlet side of gas pond 2 is provided with boring aeration pipe 24, and the boring aeration pipe 24 is connected to extension with air pump 25
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 inside and outside water inlet side of three circulated 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 volume ratio of the lower area of deflector 23 and upper area is about 2:1.
The vertical inside and outside delivery port side of three circulated 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 inside and outside inwall of three circulated aeration tank 2.
The method of the vertical inside and outside three circulations 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 inside and outside three circulated aeration tanks
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 6-12h, return sludge ratio 50%-
100%；
Step 3, aeration process
After air enters vertical inside and outside three circulated aeration tanks 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, and then horizontal movement is horizontal to deflector 23
Edges of boards edge, a part of bubble is no in the presence of current to overflow the water surface, but with water movement, which part bubble is in water conservancy diversion
The region below of plate 23, is moved downward by the stop of inwall, in the rising flowing with aeration, forms clockwise vortex；Water conservancy diversion
The top bubble part of plate 23 utilizes the inertia and Action of Gravity Field of water movement, anti-clockwise downward movement, by the transverse slat of deflector 23
Obstruction and end rising bubble drive, formed left-hand circular flowing, in the process current respectively by air baffle 27,
The guiding of water flow partition board 28, downward water impact is produced, to impact the sludge of the transverse slat overburden of deflector 23, make its backflow
To the bottom of aeration tank 2, sludge is avoided to accumulate；Another part is back to vertical inside and outside three cyclic aerations with the upper liquid of deflector 23
The bottom of pond 2 simultaneously with aeration rise again, formed it is counterclockwise circulate, i.e. three shuttling movement forms；
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；To prolong journey longer due to motion for top bubble, is constantly consumed, therefore bubble is smaller, and dissolved oxygen is relatively low, and the circulation of formation is low
Dissolve oxygen cycle；Another part minute bubbles, along the riser reverse movement of deflector 23, eventually pass back to vertical inside and outside three and followed with current
The bottom of ring aeration tank 2, rise again with the progress of aeration, and then form shuttling movement；
Three described loop structures, lower periphery dissolved oxygen content is higher, and ecto-entad portion dissolved oxygen gradually reduces, and is formed
Anaerobic environment is advantageous to reactor denitrogenation dephosphorizing；By the circulation of bubble ascending path and sewage through backflow on rear side of deflector, can incite somebody to action
The activated sludge that the top of deflector 23 is saved bit by bit rushes, and is back to the vertical inside and outside bottom of three circulated aeration tank 2 with current, ensure that
The stabilization of sludge concentration, while create anaerobic environment；Upper-circulation flow is dynamic to be in low dissolved oxygen state, equivalent to adding
The anoxic zone of vertical inside and outside three circulated aeration tanks 2, improve the overall denitrogenation dephosphorizing ability of vertical inside and outside three circulated aeration tank 2.
The method of the vertical inside and outside three circulations continuous flow process Treating Municipal Sewage of the utility model, municipal sewage are dirty from city
Water tank 1 is stably sent into sewage by intake pump 21 in vertical inside and outside three circulated aeration tanks 2 that dischargeable capacity is 36L, vertically
The riser and transverse slat of deflector 23 of inside and outside three circulated aeration tank 2 in it respectively with vertically and horizontally into 15 degree of angle phases
Hand over, by temperature and the on-line monitoring change of dissolved oxygen probe 22, while have boring aeration pipe 24 on the inside of the riser of deflector 23, outside it
Connect the and gas flow meter 2.6 of air pump 25；The vertical inside and outside water outlet of three circulated aeration tank 2 enters vertical-flow precipitation by difference in height
Pond 3, after precipitation water outlet flowed out through downflow weir 31, is provided with mud discharging mouth 32 in vertical sedimentation basin 3, sludge flows back through reflux pump 3.3
To the vertical inside and outside aeration tube 24 of three circulated aeration tank 2.
This L-type deflector 23 effectively can collect bubble, after ensureing that bubble rises, can be hindered completely by deflector 23
Gear, moves to form loop structure along deflector 23, and the gas after collection can have enough power to continue to drive top circulation.
Openend ensures upper pumparound to bottom simultaneously, and 5 ° of -15 ° of inclination angles are advantageous to sludge and return to bottom, by air baffle 27, water
The guiding of dividing plate 28 is flowed, big quantity set mud phenomenon is not produced on the top of deflector 23, and does not influence the overall cyclic process in top.
Relatively conventional aeration tank bubble is ramped, and the vertical inside and outside bubble motion distance of three circulated aeration tank 2 is extended,
Increase with the contact area of sewage, part bubble circulates with sewage, improves oxygen transfer efficiency.Pollutant and microorganism
And oxygen contact is abundant, improves treatment effeciency, corresponding aeration quantity is reduced, and has saved aeration energy consumption.Due in deflector
23 region below form moves to the water impact of the vertical inside and outside bottom of three circulated aeration tank 2, makes reactor bottom sludge difficult
Easily deposition, with the continuous shuttling movement of water (flow) direction, therefore solves the universal deposition in aeration tank bottom, pond body utilization rate is low to ask
Topic.
Between the transverse slat of deflector 23 and the vertical inside and outside bottom plate of three circulated 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.Therefore, vertical inside and outside three circulation technologies
Improve aeration tank synchronous nitration and denitrification efficiency.
The utility model mainly for inflow be less than 10000 cubic metres daily, organic matter and total nitrogen ratio in town sewage
Example is 5-6 small water waste water, and it is more low to solve anaerobic/anoxic environment space deficiency, aeration tank denitrification ability in the prior art
Problem.In carbon source deficiency, can be supplemented by ringing needed for carbon source, reach the purpose of denitrogenation.
Embodiment
Experiment uses municipal sewage, and for raw water, specific water quality is as follows：COD concentration is 250~320mg/L, NH4- N concentration is
40~50mg/L, TN concentration are 50~60mg/L, TP concentration is 2~6mg/L.Experimental system is as shown in figure 1, vertical three circulation is anti-
Device is answered to be made up of lucite, long 0.3m, wide 0.3m, high 0.5m, available depth 0.4m, dischargeable capacity 36L.
Carrying out practically is as follows：
1) in municipal sewage plant aeration tank, be made into sludge concentration is vertical three recirculation reactors sludge source
4000mg/L, before testing commencement of commercial operation, culturing sludge 1 week, it is active to recover its.
2) normal operating phase：
1. daily hydraulic detention time is 8h, sludge age 18d；
2. whole technique uses continuum micromeehanics pattern, 20 DEG C, flow of inlet water 4.5L/h of temperature, sludge reflux amount ratio is
100%, water inlet aeration is carried out simultaneously, and dissolved oxygen is controlled in 2.0mg/L, dense using sludge in regular instantaneous spoil disposal control reactor
Degree.
3. after stable, traditional reactor effluent COD concentration is 20-50mg/L, average removal rate 88.25%；It is perpendicular
It is that 15.0~30.0mg/L, clearance are maintained at more than 90% to three recirculation reactor effluent COD concentrations；Two reactors contrast
NH4- N clearances are respectively 84.5% and 91.30, and TN is that clearance is respectively that 80.14% and 92.74%, TP clearances reach
To more than 90%.Vertical inside and outside three recirculation reactor contaminant removal efficiencies are higher than traditional reactor more than 90%.It is molten
Solution oxygen monitoring result is shown：When to reach water outlet dissolved oxygen be 2.0mg/l, vertical three recirculation reactors aeration quantity is 0.13L/min,
Traditional reactor aeration quantity is 0.15L/min, and vertical inside and outside three recirculation reactors have 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 inside and outside three circulations continuous flow process Treating Municipal Sewage, it is characterised in that including the city set gradually
City's sewage water tank (1), vertical inside and outside three circulated aeration tanks (2) and vertical sedimentation basin (3), municipal sewage water tank (1) top
Portion's delivery port is connected with vertical inside and outside three circulated aeration tanks (2) top side water inlet by water pipe, is provided with the water pipe
Intake pump (21) and vertical inside and outside three circulated aeration tanks (2) bottom is inserted into, vertical inside and outside three circulated aeration tanks (2) are another
Side roof part delivery port is connected with the water inlet at the top of vertical sedimentation basin (3), in vertical inside and outside three circulated aeration tanks (2)
The deflector (23) of horizontal L-type is provided with, the riser of the deflector (23) is positioned at vertical inside and outside three circulated aeration tanks (2) water inlet
Side and riser tail end is down, the transverse slat tail end of the deflector (23) is positioned at vertical inside and outside three circulated aeration tanks (2) delivery port
Side, there is space, institute between deflector (23) transverse slat and riser and vertical inside and outside three circulated aeration tanks (2) both sides inwall
State deflector (23) upper central portion and be provided with water flow partition board (28), followed above the deflector (23) close to vertical inside and outside three
Ring aeration tank (2) delivery port side is provided with air baffle (27), and the water flow partition board (28) is with the horizontal 45 °, the gas
Dividing plate (27) is flowed with the horizontal 115 °, and the bottom of described vertical inside and outside three circulated aeration tanks (2) water inlet side, which is provided with, wears
Hole aeration tube (24), the boring aeration pipe (24) are connected with air pump (25) to extension and are provided with boring aeration pipe (24)
Gas flowmeter (26).
2. the device of vertical inside and outside three circulations 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 inside and outside three circulated aeration tanks (2) water inlet side
Bottom by pipeline communication, be provided with sludge reflux pump (33) on the pipeline.
3. the device of vertical inside and outside three circulations 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, the volume ratio of deflector (23) lower area and upper area is 2:1.
4. the device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage according to claim 1, its feature exist
, described vertical inside and outside three circulated aeration tanks (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 inside and outside three circulated aeration tanks (2) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720337902.3U CN206654778U (en) | 2017-03-31 | 2017-03-31 | The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720337902.3U CN206654778U (en) | 2017-03-31 | 2017-03-31 | The device of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055781A (en) * | 2017-03-31 | 2017-08-18 | 长春工程学院 | The device and method of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage |
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2017
- 2017-03-31 CN CN201720337902.3U patent/CN206654778U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107055781A (en) * | 2017-03-31 | 2017-08-18 | 长春工程学院 | The device and method of vertical inside and outside three circulations continuous flow process Treating Municipal Sewage |
| CN107055781B (en) * | 2017-03-31 | 2023-10-24 | 长春工程学院 | Device and method for treating urban sewage by vertical internal and external three-circulation continuous flow process |
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