CN1015167B - Equipment for deep-well aeration treatment of waste water with low energy consumption - Google Patents
Equipment for deep-well aeration treatment of waste water with low energy consumptionInfo
- Publication number
- CN1015167B CN1015167B CN86106359A CN86106359A CN1015167B CN 1015167 B CN1015167 B CN 1015167B CN 86106359 A CN86106359 A CN 86106359A CN 86106359 A CN86106359 A CN 86106359A CN 1015167 B CN1015167 B CN 1015167B
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- Prior art keywords
- downtake
- waste water
- gas
- deep
- liquid
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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 present invention relates to an energy-saving deep-well aeration waste water treating device which belongs to a biological waste water treating device. The present invention comprises the process equipment of aeration, degasification and solid-liquid separation. The suggested improved structure design of a down coming pipe of a deep-well aeration tank comprises a high-efficiency gas-liquid turbulator, a sideways internal circulation passage, a blowout preventing plate and a degassing device which is matched with the aeration tank. The present invention is favorable for reducing energy consumption, improving purifying effect and preventing well blowout, and the present invention can be used for purifying and treating municipal sewage and industrial organic waste water with various concentrations.
Description
The present invention relates to the bioremediation of waste water or sewage, particularly the biological treatment device of deep well aeration.
Aeration process in deep well has a series of outstanding advantages, is subjected to paying attention to widely, and the deep well aeration groove is the major equipment of this method of wastewater treatment, and the wastewater biochemical process is promptly carried out in aerator tank.General dark 50～150 meters of this aerator tank equipment, 0.4～6 meter of diameter are separated into downtake and upcast two portions in the groove, the former and the latter can be arranged side by side, also can be the concentric-ring pattern structure.Place subterranean aerator tank to adopt the concentric-ring pattern structure, its center downtake is straight tubular more, and the annular section between shell and the pipe core is made upcast, and the set inverted draw cut in aerator tank top is generally circular.Downtake internal structure in the aerator tank is its key component technology, to not disclosing in the existing document of this part technology.
It is that the gas of power is proposed circulation and with the mechanical cycles of water pump lifting that the liquid circulation of aerator tank and operation scheme have with pressurized air.Gas is carried the pressurized air that injects in the circulation and was both provided impellent for liquid circulation is mobile, and the biochemical action process for waste water provides essential oxygen again.After the startup, during the liquid circulation operation, waste water and returned sluge add from aerator tank downtake top, and air is introduced by the ventilation point that is located at this pipe appropriate depth and dissolved law according to Henry, dissolves in the water gradually in the process that descends with circulating fluid.Mixed solution changes direction of motion after flowing to and reaching bottom land, upwards flow along upcast, the air that meanwhile dissolves in the water discharges again gradually, enters atmosphere by the top discharge of groove, most of liquid returns downtake then through inverted draw cut and converges with the waste water that adds from the top and the charging liquid phase of returned sluge, and its biochemistry and working cycle are continuously carried out.The aerator tank inverted draw cut sets out the mouth of a river, and processed water outlet is after the degassing and solid-liquid separation, and qualified water is discharged, and mud is most of to reflux.
Operation uses the result to show, this deep aerating treatment unit has oxygen transfer efficiency height, characteristics such as liquid mixing and round-robin dynamic efficiency height and mud transformation efficiency are low, thereby be specially adapted to industrial sectors such as food-processing, chemical industry, papermaking and pharmacy, high-concentration waste water is handled.Yet, but cause economic benefit not ideal enough because energy consumption is big for the processing of low-concentration organic waste water or the equipment of small-bore aeration tube; Before entering the settling tank solid-liquid separation, nearly all adopt vacuum outgas for the water outlet of aerator tank, make that the equipment power consumption is difficult for reducing.
The purpose of this invention is to provide the deep well aeration groove wastewater treatment equipment that a kind of energy consumption is low, reliable, treatment effect is good.
This device has been taked following improvement: the side direction inner cycle channel that space that aerator tank downtake and inverted draw cut inwall limited links is set; Setting is positioned at the gas-liquid turbulator of the suitable depths of downtake; Top in downtake is provided with the blowout prevention plate, is equipped with de-gassing vessel and the rational waste water handling equipment and the pipeline of aerator tank water outlet.Thereby brought into play the wastewater treatment ability of device, realize reducing energy consumption and low concentration wastewater handled and also obtained good economical and technical benefit.
The equipment for deep-well aeration treatment of waste water facility that this device provided has that simple in structure, gas carries that circulating effect is good, the utilization ratio height of turbulent violent, the oxygen of gas-liquid, operational management characteristics easily.When the invention process, have following good effect:
(1) have not only that general deep well aeration plant area is economized, the wastewater treatment portative power is big, no sludge bulking problem and underground aerator tank be subjected to temperature to influence little advantage, and low concentration wastewater handled also obtain good result, its kinetic energy consumes low, for example handles 1M
3The power consumption of waste water can be reduced to 0.32 degree; Amounting to the power consumption of handling 1Kg BOD is 0.94～1.3 degree;
(2) Zhuan Zhi portative power is big, and the anti impulsion load performance of handling waste water is good, handles waste water fast, efficiently;
(3) device oxidation capacity discharge water strong, after handling does not have foul smell, and the excess sludge production for the treatment of processes is low;
(4) Zhuan Zhi equipment is simple, and investment economizes, operation and convenient management.
Below in conjunction with embodiment and accompanying drawing thereof, device of the present invention is described in detail;
Fig. 1 is a kind of embodiment deep well aeration groove internal structure synoptic diagram of the present invention;
Fig. 2 is the vertical view of Fig. 1 aerator tank;
Fig. 3 is the structural representation of Fig. 1 aerator tank decline pipeline;
Fig. 4 is the front view of gas-liquid turbulator in Fig. 3 downtake;
Fig. 5 is the upward view of Fig. 4 gas-liquid turbulator gas ejection parts;
Fig. 6 is the longitudinal section synoptic diagram of Fig. 4 gas-liquid turbulator gas ejection parts nozzle.
Fig. 7 is the degassing pond supporting with Fig. 1 deep well aeration groove, the synoptic diagram of surface aerating machine.
See figures.1.and.2, the deep well aeration groove 10 of this device comprises the inverted draw cut 2 at top and the deep-well shell 3 of bottom.Shell 3 and downtake 4 are concentric structure: the top of downtake 4 is admission ports 1 of waste water and returned sluge, and the lower end of downtake 4 extends to the bottom position near shell 3; Annular section between downtake 4 and the deep-well shell 3 is a upcast.Processed waste water enters aerator tank 10 from the top inlet 1 of downtake 4, through inner circulating reflux, flows to other treatment facilities from aerator tank outlet 19.
In the position of inverted draw cut 2 inside near the bottom, be provided with the side direction inner cycle channel 6 of downtake 4, its end and downtake UNICOM, the other end is its import 7.Import 7 is near the sidewall of inverted draw cut 2 and maintain suitable clearance distance.In order to prolong the residence time for the treatment of water at inverted draw cut 2, improve the removal effect of waste gas bubble in the water, side direction inner cycle channel 6 extends along its edgewise axis, and inverted draw cut 2 is designed to rectangle structure simultaneously, as shown in Figure 2.The length direction of inverted draw cut 2 is consistent with the axis direction of side direction inner cycle channel 6, and the ratio of its length and width can be taken as (1.5～2): 1.Above-mentioned as required side direction inner cycle channel 6 can also be designed to two or more, for example can be designed as two, promptly with downtake 4 be the center, at 180 ° both direction each other, the opposite side direction inner cycle channel 6 of both direction is set; Inverted draw cut 2 is designed to corresponding rectangle structure simultaneously.
1/2～1/3 position in the downtake degree of depth is provided with gas-liquid turbulator 8, and pressurized air mixes with liquid stream in the downtake 4 by it, and the circulation of flowing for liquid provides driving power.Because the effect of gas-liquid turbulator makes the ducted liquid stream that descends reach very high Reynolds number, produces turbulent flow tempestuously, thereby it is effective that the very low and gas of the power consumption of deep well aeration groove is carried, and gas-liquid mixed is even, the utilization ratio height of oxygen.
In order to prevent blowout, inner tubal wall is provided with blowout prevention plate 5 at the top of downtake 4.Blowout prevention plate 5 is installed obliquely with tube wall, and its vergence direction is consistent with the direction that liquid liquid descends, and its edge, upper end is connected with tube wall, and its edge, lower end and tube wall keep appropriate gap; Set a plurality of blowout prevention plates 5, its upper-lower position and vergence direction stagger mutually, shown in the top of Fig. 1.The liquid that import 1 flows into arrives the upper edge of a back blowout prevention plate 5 through upper edge, lower edge and the lower edge of previous blowout prevention plate 5 and the gap between the tube wall, and order flows downward, and when liquid reversed flow or generation blowout, blowout prevention plate 5 will produce resistance to it.
With reference to Fig. 3, gas-liquid turbulator 8 comprises the pressurized air ejection parts 9 that are arranged on downtake 4 appropriate depth and is arranged on one section necking down pipe 18 of the decline pipeline of above-mentioned ejection parts below.Air-flow sprays to decline liquid stream from one or several nozzles, and is narrow and small and that two ends enlarge is anti-dolioform in the middle of being shaped as of necking down pipe 18.High velocity air by ejection promotes the motion down of the liquid flow direction, for it pushes away for circulation power; Liquid stream is through necking down pipe 18, and bigger variation takes place speed, forms eddy current easily, thereby makes the interior turbulent flow of downtake violent, simultaneously as long as less air demand just can realize above-mentioned circulation.The air demand of gas-liquid turbulator 8 is generally less than the biochemical air demand of wastewater treatment, therefore can select to determine appropriate air demand according to the water inlet BOD total amount of import 1, and the running power consumption of aerator tank 10 is reduced.
With reference to Fig. 4 and Fig. 5, the pressurized air gas pipe line 11 of gas-liquid turbulator 8 is delivered to nozzle 12 with pressurized air, sprays to circulating fluid by spout 13.The axis of nozzle 12 is substantially parallel with the axis of downtake 4, and the spout end 14 of nozzle is positioned near the upper edge 17 of necking down pipe 18 of downtake, as shown in Figure 4.
Pressurized air ejection parts 9 include gas pipe line 11 and nozzle 12.The number of generalized case nozzle 12 is more than 1, can be chosen for 8 or more a plurality of as required.The structure of the gas pipe line 11 of this device as shown in Figure 5, it is a circular pipe in the form of a ring, uniform distribution is equipped with 6 nozzles 12 on pipeline, pressurized air through each nozzle, sprays to liquid stream from gas pipe line 11 input.
With reference to Fig. 6, nozzle 12 has fusiform end 14 and barrel part 15.Its spout 13 is positioned at the end, and consistent with the axis direction of nozzle.
With reference to Fig. 7, in the facility of this device, the de-gassing vessel 20 that matches with aerator tank 10 adopts degassing pond 21 and is installed in to have the degassing, a surface aerating machine 22 of oxygenation in the degassing pond 21.The water outlet 19 of aerator tank and degassing pond 21 UNICOMs, degassing pond water outlet 25 can with settling tank UNICOM.Treating water makes the higher dissolved oxygen of maintenance in degassing pond 21 and the second pond thereafter through the turning effort of impeller 23, thereby biochemical action has ready conditions and can proceed, and prevents the anaerobismization and the foul smell of second pond simultaneously.The power consumption of surface aerating machine 22 is significantly less than the power consumption of vacuum degasser.
The use embodiment of the industrial aspect of wastewater treatment equipment can be used for various wastewater such as food, can, beer, alcohol, monosodium glutamate, bean product, starch and handles as mentioned above, and perhaps other organic sewages are handled.Its total investment of engineering volume is lower than or is significantly less than the investment cost of domestic conventional activated sludge process or external deep well aeration processing low concentration wastewater device; The situation of its design, running and water treatment effect is as follows:
The processed waste water of embodiment comprises the factory effluent of food processing shop, sanitary sewage and rainwater etc., and its waste water quality water yield sees Table 1, and the BOD numerical value of waste water is less than 500, and the treatment capacity of waste water can reach 2000 cubic metres of every days;
The major equipment of device comprises water collecting basin, equalizing tank, the deep well aeration groove, degassing pond, with and the waste water lift pump of attaching troops to a unit, air compressor, de-aerator, sludge reflux pump etc., waste water is through grid and pump well, equalizing tank is removed oarse-grained solids, sand setting and regulate the water quality and quantity of waste water by equalizing tank, the balancing equipment load, can be designed to high-order pond in order to save the occupation of land equalizing tank, use common lift pump as the waste water lift pump, waste water is sent into high-order equalizing tank, other flow processs of wastewater treatment adopt the gravity flow of height potential difference to carry, and carry round-robin power as gas at aerator tank inner utilization air compressor, the capacity of each principal facility is listed in table 2;
Waste water is in each treatment facility of technology, and the water-quality test value is listed in table 3;
Treatment effect during the difference wastewater flow is listed in table 4;
This device can be brought into play the capacity of equipment of deep well aeration groove, surpasses designed water (45M at hydraulic load
3/ hr) 80%, volume of equipment load is under 1.45 times the situation of design loading, treating water CODcr value still is below the 33.0mg/l;
This device is in the continuous operation process of two wheat harvesting periods, and the water quality and quantity of waste water changes significantly, and every requirement for the treatment of water all meets relevant emission standard, has all obtained good benefit to producing with society, and the test result of operation sees Table 5 continuously;
As mentioned above, this device has reached the general effect of deep well aeration, also is applicable to the processing of low concentration wastewater simultaneously, and its energy consumption is low, presses 50M
3/ hour, day processing water yield 1100M
3Table 6 is listed in the power consumption of/day mensuration;
Adopt surface aerating machine, strengthen degasifying effect, cut down the consumption of energy, the measured value of its degassing and oxygenation capacity is listed in table 7;
The sludge yield of this device is low, is about 0.19Kg mud/Kg BOD, and 0.5～0.6 numerical value of more general treatment process is much lower, thus saved facility investment with running and the final expense of handling, its measured value is listed in table 8;
Deliver according to U.S. EPA nineteen eighty-two:
Techology assessment of the deep shaft biological reactor PB82-23779, the power consumption data that the 51st page table 10 is provided, the result obtained with the present invention compares, and lists in table 9.
Table 1: waste water quality water flowmeter
Project design parameter measured value
Wastewater flow rate (m
3/ D) 1100m
3/ D(45m/hr) 385～1505
COD（mg/l） 700 250～852
BOD（mg/l） 350 136～472
BOD/COD 0.5 0.46～0.65
PH 6.0～7.5 7.0～7，45
Colourity/150～900
NH
3-N（mg/l） / 2～7
SS（mg/l） 200～500 200～850
Table 2: list of main equipment
The device name useful volume
Pump well 18.0M
3
Equalizing tank 320M
3
Deep-well aeration groove φ 0.85 * 85(M) 63.0M
3
Degassing pond 17.1M
3
Table 3: each section of technology waste water quality distributes
COD COD colourity NH
3-N NH
3-N dissolved oxygen
PH (mg/l) clearance (degree) is clearance (mg/l)
（%） （%）
Intake 7.35 399.0 0 750 3.42/0
Aerator tank 7.55 45.6 88.6 10 1.22 64.3 7.4
Degassing pond 7.70 40.5 1.3 10 1.16 1.8 3.4
Second pond 7.85 15.2 6.3 10 1.10 1.8 0.5
Water outlet 7.85 15.2 0 10 1.10/6.0
* the area from the beginning the water colour variation be 18～22 °
Table 4: hydraulic load test
Waste water COD
Cr(mg/l) mud mud load alive in the machine utilization groove
Flow
The m/hr water removal rate kgcoD/M of intaking out
3D (g/l) kg
CoD/ KgssD
27.5 503.8 70.9 85.1 5.28 3.05 1.73
34.2 326.3 55.8 82.9 4.25 2.83 1.50
44.0 407.8 39.2 90.4 6.84 3.36 2.04
53.0 377.4 39.4 89.6 7.62 2.80 2.72
63.9 302.5 65.8 78.2 7.36 3.20 2.3
72.0 333.7 41.8 87.5 9.15 4.0 2.29
Table 5: continuous processing test run(s) result
Project mean variation scope
Advance COD
Cr(mg/l) 338.9 198.0～637.9
BOD（mg/l） 188.7 109.2～350.8
Water SS(mg/l) 384 151～892
Colourity (degree) 200～850
COD（mg/l） 55.7 11.8～86.7
Go out BOD(mg/l) 3.3 0.8～4.9
Water SS(mg/l) 14.7 4～28
Colourity (degree) 0～35
COD clearance % 84.6 64.2～96.5
BOD clearance % 98.2 94.4～99.9
Day is handled water yield M
3385.7～1505.5
* the area from the beginning the water colour variation be 18～22 °
Table 6: the mensuration of engineering power consumption
Device name power consumption (degree/day) power consumption (degree/M
3Waste water)
Air compressor machine 200.1 0.182
Promote water pump 71.5 0.065
De-aerator 34.5 0.031
Sludge reflux pump 19.78 0.018
Other are 24.65 0.032 years old
Accumulative total 360.53 degree 0.328
Table 7: the mensuration of surface aerating machine degasifying effect and oxygenation capacity
Surface aerating machine rotating speed surface aerating machine power consumption degassing pond dissolved oxygen second pond dissolved oxygen water outlet SS
252 change 1.92KW 5.0mg/l 1.1mg/l＜20mg/l
216 change 1.47KW 4.9mg/l 0.9mg/l 20mg/l
185 change 1.13KW 4.3mg/l 0.6mg/l 20mg/l
160 change 0.75KW 4.0mg/l 0.3mg/l 20mg/l
Annotate: D is 7.8mg/l in the aerator tank, sludge concentration 4.0g/l in the groove
Table 8: the mensuration of excess sludge productive rate
Handle the water yield and remove BOD total amount dewatered sludge total amount excess sludge productive rate
(m
3) (kilogram) (kilogram) Kg mud/kg BOD
12553.1 2152.0 408.8 0.19
Table 9: the comparison of several power consumptions
Data the present invention that project EPA delivers
Common active deep well method
The mud method
Power consumption Kwh/m
30.621 0.726 0.32
KgBOD 0.274 0.234 0.77～1.06
Removal/Kwh
Claims (10)
1, a kind of wastewater treatment equipment, comprise that there is inverted draw cut on top, divides into the deep well aeration groove and the de-gassing vessel for the treatment of water upcast and downtake, the downtake 4 that it is characterized in that aerator tank 10 is provided with the side direction inner cycle channel 6 that the space of being limited with inverted draw cut 2 inwalls links, and the depths of downtake 4 is provided with gas-liquid turbulator 8.
2, device as claimed in claim 1 is characterized in that the import 7 of described side direction inner cycle channel 6 is arranged on inverted draw cut 2 interior positions near the bottom, and side direction inner cycle channel 6 extends along its lateral axes.
3, device as claimed in claim 1 or 2 is characterized in that described inverted draw cut 2 is rectangle structure, and its length direction is consistent with the axis bearing of trend of side direction pump around circuit passage 6.
4, device as claimed in claim 1 is characterized in that 1/2～1/3 degree of depth place of position in downtake 4 that described gas-liquid turbulator 8 is provided with.
5, device as claimed in claim 1 is characterized in that described gas-liquid turbulator 8 comprises one section necking down pipe 18 of compressed-air actuated ejection parts 9 and the decline pipeline that is arranged on ejection parts 9 belows.
6, device as claimed in claim 5, it is characterized in that described pressurized air ejection parts 9 comprise cyclic gas pipe line 11 and with the nozzle 12 of gas pipe line 11 UNICOMs.
7, device as claimed in claim 6 is characterized in that the axis of described nozzle 12 is substantially parallel with downtake 4 axis, and pressurized air ejection parts 9 have a plurality of nozzles 12 or spout 13.
8,, it is characterized in that the vertical section of one section necking down pipe 18 of described decline pipeline is anti-dolioform as claim 1 or 4 described devices.
9, device as claimed in claim 1 is characterized in that the top in the described downtake 4 is provided with polylith blowout prevention plate 5, and blowout prevention plate 5 tilts setting with the downtake axis direction.
10, device as claimed in claim 1 is characterized in that described de-gassing vessel comprises degassing pond 21 and the surface aerating machine 22 with the degassing, oxygenation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106359A CN1015167B (en) | 1986-09-17 | 1986-09-17 | Equipment for deep-well aeration treatment of waste water with low energy consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106359A CN1015167B (en) | 1986-09-17 | 1986-09-17 | Equipment for deep-well aeration treatment of waste water with low energy consumption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106359A CN86106359A (en) | 1988-03-30 |
| CN1015167B true CN1015167B (en) | 1991-12-25 |
Family
ID=4803166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86106359A Expired CN1015167B (en) | 1986-09-17 | 1986-09-17 | Equipment for deep-well aeration treatment of waste water with low energy consumption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015167B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344005B (en) * | 2008-08-22 | 2010-06-09 | 张毅航 | Method for simultaneously mounting internal barrel and internals of deep well high pressure aeration reactor |
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|---|---|---|---|---|
| CN102515344B (en) * | 2011-12-31 | 2013-12-04 | 山东汇盛天泽环境工程有限公司 | High-load vertical ultradeep bioreactor |
| CN102603066B (en) * | 2012-03-16 | 2013-06-19 | 桂林理工大学 | Deep well type A2O2 method for treating sewage and waste water |
| CN102775007A (en) * | 2012-07-06 | 2012-11-14 | 徐旭 | Method and device for treating sewage |
| CN102745865A (en) * | 2012-07-16 | 2012-10-24 | 绍兴文理学院 | Deep well aeration sewage treatment method |
| CN102745803A (en) * | 2012-07-16 | 2012-10-24 | 绍兴文理学院 | Deep well aeration device |
| CN102897905A (en) * | 2012-09-26 | 2013-01-30 | 冯秀娟 | Activated sludge reactor |
| CN110498520B (en) * | 2019-08-21 | 2024-02-13 | 西安建筑科技大学 | Air-stripping type deep well supercharging shallow stagnation water-area emergency blue algae control water treatment equipment |
-
1986
- 1986-09-17 CN CN86106359A patent/CN1015167B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101344005B (en) * | 2008-08-22 | 2010-06-09 | 张毅航 | Method for simultaneously mounting internal barrel and internals of deep well high pressure aeration reactor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106359A (en) | 1988-03-30 |
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