CN206970400U - The device of the vertical multi-cycle Process for Treating Municipal of pulling flow type - Google Patents
The device of the vertical multi-cycle Process for Treating Municipal of pulling flow type Download PDFInfo
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- CN206970400U CN206970400U CN201720337904.2U CN201720337904U CN206970400U CN 206970400 U CN206970400 U CN 206970400U CN 201720337904 U CN201720337904 U CN 201720337904U CN 206970400 U CN206970400 U CN 206970400U
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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 multi-cycle Process for Treating Municipal of the utility model pulling flow type, including the city domestic sewage water tank being sequentially connected, the vertical multi-cycle aeration tank of pulling flow type and vertical sedimentation basin, the city domestic sewage water outlet of water tank is connected by pipeline with the water inlet of the vertical side bottom of multi-cycle aeration tank one of pulling flow type, intake pump is provided with the pipeline, the first downflow weir is provided with the top of the vertical multi-cycle aeration tank opposite side of pulling flow type, first downflow weir connects with the water inlet of vertical sedimentation basin, the second downflow weir is provided with the top of the vertical sedimentation basin.The utility model can determine loop number and reaction tank height, flexible design according to the actual demand of engineering；The space proportion of anaerobic zone and anoxic zone is improved, is more beneficial for the removal of hardly degraded organic substance, while creates more denitrification environment, denitrification ability positive effect is improved for big yield low carbon-nitrogen ratio sewage.
Description
Technical field
The utility model belongs to technical field of biological sewage treatment, and in particular at a kind of vertical multi-cycle technique of pulling flow type
Manage the device of 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, high for nitrogen and phosphorus content in sewage, sewage disposal
Factory's majority uses A2/ O techniques, its core are anaerobic reation pool, hypoxia response pond, aerobic reaction tank, and floor space is larger.Wherein
Aerobic reaction tank needs substantial amounts of aeration, for the organic matter in aerobic degradation water.According to statistics, core is given birth in sewage plant
Change the 50%-70% that processing unit power consumption accounts for whole technique, be concentrated mainly in air blower, agitator and interior external reflux pump,
Interior external reflux pump effect herein is backflow nitrification liquid and sludge.In activated sludge process, aeration energy consumption accounts for total energy consumption
55.6%.
The flow of Traditional continuous flow Process for Treating Municipal is as shown in figure 1, municipal sewage passes through constant current from raw water water tank 1
Pump 2.1 is stably sent into sewage in traditional reaction tank 1 that dischargeable capacity is 138.6L, its outer connection air compressor 2.3, rotor
Flowmeter 2.4；Aeration tank water outlet enters vertical sedimentation basin 3 by difference in height, after precipitation water outlet flowed out through downflow weir 3.1, sink
Mud discharging mouth 3.2 is provided with the pond of shallow lake, sludge is back near the aeration tube of aeration tank through reflux pump 3.3.
The purpose of aeration is the microorganism in dissolved oxygen in aeration tank, organic matter and activated sludge is sufficiently mixed contact,
So as to accelerate the degradation process of pollutant to improve sewage treating efficiency.Traditional aeration mode is more using horizontally disposed, aerator point
It is dispersed in aeration tank bottom, bubble is begun to ramp up by aerator outlet, and lifting height is the distance of aerator and the water surface, distance phase
To shorter, 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
System.Because aerator position limits, aeration outlet has 15-20cm distance with aeration tank bottom, and current can not have influence on
Aeration tank bottom, therefore the deposition of aeration tank bottom is caused, 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, power consumption is added, to low
The waste water of carbon-nitrogen ratio, also needs additional carbon, and water outlet is not up to standard.
Utility model content
To achieve the above object, the utility model provides a kind of dress of the vertical multi-cycle Process for Treating Municipal of pulling flow type
Put, solve reactor denitrification ability decline in the prior art, hardly degraded organic substance can not be removed, power consumption is big, water outlet
The problem of not up to standard.
The utility model the technical scheme adopted is that the device of the vertical multi-cycle Process for Treating Municipal of pulling flow type,
The vertical multi-cycle aeration tank of city domestic sewage water tank, pulling flow type and vertical sedimentation basin including being sequentially connected, the city
Sanitary sewage water outlet of water tank is connected by pipeline with the water inlet of the vertical side bottom of multi-cycle aeration tank one of pulling flow type, the pipe
It is provided with intake pump on road, is provided with the first downflow weir at the top of the vertical multi-cycle aeration tank opposite side of pulling flow type, described the
One downflow weir is connected with the water inlet of vertical sedimentation basin, and the second downflow weir is provided with the top of the vertical sedimentation basin, described
Vertical sedimentation basin bottom is provided with mud discharging mouth, and the vertical sedimentation basin bottom is vertically more by sludge reflux pump and pulling flow type
Circulated aeration tank water inlet side connects, and the vertical multi-cycle aeration tank water inlet side of pulling flow type is horizontally disposed 2 or 2
Aeration tube more than individual, multiple the aeration tubes are extended down to are connected with air pump by gas flowmeter outside, and the pulling flow type is vertical
Being horizontally disposed with from top to bottom inside multi-cycle aeration tank has polylith deflector, and each described deflector one end and pulling flow type are vertically more
Circulated aeration tank inwall engages and the other end has space, the adjacent deflector away from the vertical multi-cycle aeration tank inwall of pulling flow type
Space institute it is in opposite direction at one end.
It is of the present utility model to be further characterized in that,
Each the wide and high ratio in the space between the vertical multi-cycle aeration tank inwall of deflector and pulling flow type is
2:1。
The side of first downflow weir is provided with temperature and dissolved oxygen probe, and the temperature and dissolved oxygen probe are inserted into
In space between the top deflector and the vertical multi-cycle aeration tank inwall of pulling flow type.
The beneficial effects of the utility model are：
(1) vertical multi-cycle aeration tank can determine loop number and reaction tank height, design according to the actual demand of engineering
Flexibly, excessive infrastructure investment is avoided；Multi-cycle structure substantially prolongs move distance of the bubble in sewage simultaneously,
Residence time of the sewage in reaction tank also increases, and improves the utilization rate more than 10% of oxygen, and organic removal rate improves
10%-15%, ammonia nitrogen removal frank improve 10%-20%, reduce aeration time 20%-30%.
(2) due to adding polylith deflector, the path of oxygen diffusion motion is limited, therefore create bigger anaerobism
And anaerobic environment, the hardly degraded organic substance in sewage are hydrolyzed into degradable substance in anaerobic environment, circulated by top
Move to anaerobic environment and be further decomposed as degradable small-molecule substance, most afterwards through both sides circulate it is aerobic to bottom
Environment is decomposed removal.It is less than 5 waste water for carbon-nitrogen ratio, because organic matter is largely removed in aerobic zone, therefore anti-nitre
Change carbon source deficiency, it is difficult to carry out.This technique expands anaerobic/anoxic space by the high low dissolved oxygen area of space volume of reasonable distribution
Region, create advantageously in the environment of nitration denitrification, hardly degraded organic substance in water is divided by anaerobic/anoxic environment
Solution, caused small-molecule substance conveys carbon source to denitrification process directly as denitrifying carbon source, in addition ringing, relative to pass
System reactor substantially increases denitrification ability, and denitrification ability improves 30% or so by comparison.
(3) vertical multi-cycle reaction tank is impacted without interior circulation, base sludge by water circulation flowing, it is impossible to is deposited to
Dead band is formed on reaction tank bottom, improves aeration tank effective rate of utilization 20% or so.
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 flow chart of Traditional continuous flow Process for Treating Municipal；
Fig. 2 is the apparatus structure schematic diagram of the vertical multi-cycle Process for Treating Municipal of the utility model pulling flow type；
Fig. 3 is that the deflector of the device of the vertical multi-cycle Process for Treating Municipal of the utility model pulling flow type sets signal
Figure；
Fig. 4 is that the pulling flow type of the method for the vertical multi-cycle Process for Treating Municipal of the utility model pulling flow type is vertically more
Circulated aeration tank circular response figure.
In figure, 1. city domestic sewage water tanks, the vertical multi-cycle aeration tank of 2. pulling flow types, 3. vertical sedimentation basins；
21. intake pump, 22. aeration tubes, 23. deflectors, 24. temperature and dissolved oxygen probe, 25. first downflow weirs, 26. is empty
Air pump, 27. gas flowmeters；
31. the second 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 multi-cycle Process for Treating Municipal of the utility model pulling flow type, as shown in Fig. 2 including connecting successively
The vertical multi-cycle aeration tank 2 of city domestic sewage water tank 1, pulling flow type connect and vertical sedimentation basin 3, the city domestic sewage
The delivery port of water tank 1 is connected by pipeline with the water inlet of the vertical side bottom of multi-cycle aeration tank 2 one of pulling flow type, is set on the pipeline
It is equipped with intake pump 21, is provided with the first downflow weir 25 at the top of the vertical opposite side of multi-cycle aeration tank 2 of pulling flow type, described first
Downflow weir 25 connects with the water inlet of vertical sedimentation basin 3, and the top of vertical sedimentation basin 3 is provided with the second downflow weir 31,
The bottom of vertical sedimentation basin 3 is provided with mud discharging mouth 32, and the bottom of vertical sedimentation basin 3 is by sludge reflux pump 33 with pushing away
The vertical water inlet side of multi-cycle aeration tank 2 connection of streaming, the vertical water inlet side of multi-cycle aeration tank 2 of pulling flow type are horizontal
The aeration tube 22 of 2 or more than 2 is provided with, is extended down to outside multiple the aeration tubes 22 and air is connected with by gas flowmeter 27
Pump 26, being horizontally disposed with from top to bottom inside the vertical multi-cycle aeration tank 2 of pulling flow type has polylith deflector 23, each described to lead
The one end of flowing plate 23 engages with the vertical inwall of multi-cycle aeration tank 2 of pulling flow type and the other end is away from the vertical multi-cycle aeration tank 2 of pulling flow type
Inwall has a space, and the space institute of the adjacent deflector 23 is in opposite direction at one end.
The wide and high ratio in the space between each vertical inwall of multi-cycle aeration tank 2 of deflector 23 and pulling flow type
For 2:1.The side of first downflow weir 25 is provided with temperature and dissolved oxygen probe 24, and the temperature and dissolved oxygen probe 24 are inserted
Enter to the space between the top deflector 23 and the vertical inwall of multi-cycle aeration tank 2 of pulling flow type.
The method of the vertical multi-cycle Process for Treating Municipal of the utility model pulling flow type, as shown in Figure 3-4, specifically according to
Following steps are carried out：
Step 1, sludge is configured
The vertical sludge source of multi-cycle aeration tank 2 of pulling flow type is prepared sludge concentration and existed in municipal sewage plant aeration tank
3000-4000mg/L sludge is inoculated with, and vexed exposure starts to intake after 2 days, and gradually increase makes microorganism gradual to inflow daily
It is applicable, time was at 1 week or so；
Step 2, aeration prepares
Continuous stream operational parameter control, sludge concentration is 3000-4000mg/L in the vertical multi-cycle aeration tank 2 of pulling flow type,
Continuous aeration is started simultaneously at, 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 the vertical multi-cycle aeration tank 2 of pulling flow type, it is divided into minute bubbles to begin to ramp up by aeration tube 22, runs into
The deflector 23 of bottom stops to move along deflector 23, and now bubbles entrain liquid rises, and is blocked back reflection and transports downwards
It is dynamic, and then formed and circulated, liquid forms hyperoxia area with the abundant region of bubble contact, and center and lower area are low-oxygen area；
Vertically rise behind bubble motion to the end of bottom deflector 23, by the stop of the deflector 23 of centre, same edge
Deflector 23 among moves, therefore forms the low of the of a relatively high Zhong Yang areas of peripheral dissolved oxygen concentration and center and bottom
Oxygen area；Last gas enters next piece of deflector 23 from the end of deflector 23 of centre, with the increase of dividing plate quantity, bubble fortune
It is dynamic to prolong Cheng Zengchang, while form the different race way of multiple dissolved oxygen contents；
Due to gradually being reduced with waste water, dissolved oxygen content in bubble uphill process, when the vertical multi-cycle of pulling flow type exposes
After gas pond 2 reaches 4-5 circulations, the 5th compartment core dissolved oxygen can reach below 0.5mg/L, on this condition microorganism
Into anaerobic state, hardly degraded organic substance will be resolved into degradable polysaccharide and amino acid by anaerobic bacteria under anaerobic, point
Solve the easily biodegradable organicses completed to be removed in the anoxic zone for entering circulation periphery, while anaerobic condition can make nitrate nitrogen by anti-nitre
Nitrogen is melted into, finally the water surface is overflowed with bubble, reaches the purpose that nitrogen in sewage is removed；
During above-mentioned bubble motion, the vertical water inlet of multi-cycle aeration tank 2 water inlet of pulling flow type, current are in plug-flow form
To the vertical end movement of multi-cycle aeration tank 2 of pulling flow type, therefore, bubble in the horizontal plane by the induced effect of liquid plug-flow,
Both direction up and down is formed by the stop of deflector 23 circulate effect on section, common work in this both direction
Under, multiple conversion zones are constituted；
Dissolved oxygen concentration is outside from center between bottom deflector 23 and the vertical bottom plate of multi-cycle aeration tank 2 of pulling flow type
Enclose and gradually rise, organic matter degradation occurs mainly in hyperoxia region, and two can be directly oxidized to herein for small organic molecule
Carbonoxide and water；For molecular structure it is complicated, be difficult to biodegradable organic matter and can complete acidifying in middle oxygen or low oxygen area
This is transported to after hydrolysis, continues to complete oxidizing process；Anoxic and the presence in middle oxygen region, have been provided for microorganism denitrification
The condition of profit, nitrate nitrogen and nitrite nitrogen can be removed in anoxic and middle oxygen region by denitrification, vertical multi-cycle plug-flow technique
Improve aeration tank synchronous nitration and denitrification efficiency.
The method of the vertical multi-cycle Process for Treating Municipal of the utility model pulling flow type, municipal sewage is from raw water water tank 1
It is sent into by intake pump 21 stable in sewage in the vertical multi-cycle aeration tank 2 of pulling flow type that dischargeable capacity is 138.6L, in it
Provided with polylith deflector 23, deflector 23 is along the vertical water (flow) direction of multi-cycle aeration tank 2 of pulling flow type, and leading portion closing, bottom is led
Distance of the plate base away from bottom of pond of flowing plate 23 is 192.5mm, away from wall length is 80mm at each distal opening of deflector 23, water conservancy diversion
Plate 23 is horizontal positioned；Other deflectors 23 are staggeredly placed by a distance of 192.5mm successively, and opening is 80mm away from wall.Pass through
Temperature and the on-line monitoring change of dissolved oxygen probe 24, while have aeration tube 22 below the plate of deflector 23, its outer connection air pump 26
And gas flow meter；The vertical water outlet of multi-cycle aeration tank 2 of pulling flow type enters vertical sedimentation basin 3 by difference in height, goes out after precipitation
Water is flowed out through the second downflow weir 31, and mud discharging mouth 32 is provided with sedimentation basin, and sludge is back to pulling flow type through reflux pump 33 and vertically followed more
The leading portion of ring aeration tank 2.
The application is that inflow is more than 10000 cubic metres of daily, dirty Organic substance in water and total nitrogen ratios mainly for big yield
Example is less than 5 waste water, solves in the prior art under conditions of entering organic matter of water scarcity, and reactor denitrification ability declines, be difficult
The problems such as degradation of organic substances can not be removed, water outlet is not up to standard.The utility model increases anoxic by increased multiple tracks deflector
Anaerobic environment, hardly degraded organic substance clearance is improved, and carbon source is conveyed to denitrification process by loop structure, reach denitrogenation
Purpose.
Experiment uses city domestic sewage, and for raw water, specific water quality is as follows：COD concentration is 200~300mg/L, NH4- N is dense
Spend for 40~50mg/L, TN concentration is 60~80mg/L, TP concentration is 4~6mg/L.Experimental system is as shown in figure 1, pulling flow type erects
It is made up to multi-cycle aeration tank 2 of organic lower glass, long 0.6m, wide 0.3m, high 0.8m, available depth 0.77m, dischargeable capacity
For 138.6L.
Carrying out practically is as follows：
1) the vertical sludge source of multi-cycle aeration tank 2 of pulling flow type is made into sludge concentration in municipal sewage plant aeration tank
For 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 12h, sludge age 18d；
2. whole technique uses continuum micromeehanics pattern, flow of inlet water 11.55L/h, sludge reflux amount ratio is 100%, is entered
Water aeration is carried out simultaneously, and 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 reaction tank effluent COD concentration is 20-50mg/L, average removal rate 87.27%；Plug-flow
The vertical effluent COD concentration of multi-cycle aeration tank 2 of formula is 15.0~30.0mg/L, clearance is maintained at more than 90%；Two reaction tanks
Contrast NH4- N clearances are respectively 83.49% and 95.48%, and TN is that clearance is respectively that 55.58% and 90.37%, TP is removed
Rate reaches more than 90%.The vertical contaminant removal efficiency of multi-cycle aeration tank 2 of pulling flow type is higher than tradition more than 90%
Reaction tank.Dissolved oxygen monitoring result is shown：When to reach water outlet dissolved oxygen be 2.0mg/l, the vertical multi-cycle reaction tank of pulling flow type exposes
Tolerance is 0.115L/min, and traditional reaction tank aeration quantity is 0.15L/min, and the vertical multi-cycle reaction tank of pulling flow type 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 (1)
1. the device of the vertical multi-cycle Process for Treating Municipal of pulling flow type, it is characterised in that including the city life being sequentially connected
Sewage water tank (1), the vertical multi-cycle aeration tank (2) of pulling flow type and vertical sedimentation basin (3) living, the city domestic sewage water tank
(1) delivery port is connected by the water inlet of the pipeline side bottom of multi-cycle aeration tank (2) one vertical with pulling flow type, is set on the pipeline
Intake pump (21) is equipped with, the first downflow weir (25), institute are provided with the top of vertical multi-cycle aeration tank (2) opposite side of pulling flow type
The water inlet that the first downflow weir (25) is stated with vertical sedimentation basin (3) is connected, and the is provided with the top of the vertical sedimentation basin (3)
Two downflow weirs (31), vertical sedimentation basin (3) bottom are provided with mud discharging mouth (32), vertical sedimentation basin (3) bottom
Connected by sludge reflux pump (33) multi-cycle aeration tank (2) water inlet side vertical with pulling flow type, the pulling flow type is vertically more
The horizontally disposed aeration tube (22) for having 2 or more than 2 in circulated aeration tank (2) water inlet side, multiple the aeration tubes (22)
Outer be extended down to is connected with air pump (26) by gas flowmeter (27), the vertical multi-cycle aeration tank (2) of pulling flow type it is internal from
Top to bottm is horizontally disposed polylith deflector (23), each described deflector (23) one end and the vertical multi-cycle aeration tank of pulling flow type
(2) inwall engages and the other end has space away from vertical multi-cycle aeration tank (2) inwall of pulling flow type；
Each wide and high ratio in the space between the deflector (23) and vertical multi-cycle aeration tank (2) inwall of pulling flow type
For 2:1；
The side of first downflow weir (25) is provided with temperature and dissolved oxygen probe (24), the temperature and dissolved oxygen probe
(24) it is inserted into the space between the top deflector (23) and vertical multi-cycle aeration tank (2) inwall of pulling flow type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337904.2U CN206970400U (en) | 2017-03-31 | 2017-03-31 | The device of the vertical multi-cycle Process for Treating Municipal of pulling flow type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720337904.2U CN206970400U (en) | 2017-03-31 | 2017-03-31 | The device of the vertical multi-cycle Process for Treating Municipal of pulling flow type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206970400U true CN206970400U (en) | 2018-02-06 |
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ID=61413540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201720337904.2U Active CN206970400U (en) | 2017-03-31 | 2017-03-31 | The device of the vertical multi-cycle Process for Treating Municipal of pulling flow type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206970400U (en) |
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2017
- 2017-03-31 CN CN201720337904.2U patent/CN206970400U/en active Active
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