CN110117072A - A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit - Google Patents
A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit Download PDFInfo
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- CN110117072A CN110117072A CN201910510728.1A CN201910510728A CN110117072A CN 110117072 A CN110117072 A CN 110117072A CN 201910510728 A CN201910510728 A CN 201910510728A CN 110117072 A CN110117072 A CN 110117072A
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- oxidation ditch
- denitrification process
- sewage
- synchronous nitration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The present invention relates to a kind of bottom aerated oxidation ditch synchronous nitration and denitrification process units, belong to technical field of sewage treatment equipment.The present invention is after entering anoxic zone by water inlet pipe for sewage, open aerator, it passes the gas through aeration tube and respectively enters Rotational Cylindrical, aeration plate, since the gas that escape pipe effect makes out that bends towards in aeration plate is aerated upwards with certain orientation rotation, it can make to carry out Aerobic Process for Treatment in liquid well, while carrying out similar stirring-type aeration to gas, and liquid in rotation carries out telemechanical upwards, play thrust, after entering anaerobic zone, oxygen in sewage is subjected to exclusion consumption, improve denitrifying capacity, then after entering mixed zone, nature oxygenating is carried out to sewage, avoid the excessive consumption of microorganism, and it is nitrified again and denitrifying lasting progress in the miniature oxidation ditch that partition is formed, improve the treatment effect to sewage, and increase the utilization efficiency of equipment.
Description
Technical field
The present invention relates to a kind of bottom aerated oxidation ditch synchronous nitration and denitrification process units, belong to sewage disposal device skill
Art field.
Background technique
Alternative expression oxidation ditch refer in a ditch or more ditches in chronological order spatially to the aeration operation of oxidation ditch and
Precipitation operation is made adjustment transposition, to obtain treatment effect that is optimal or requiring.Its main feature is that oxidation ditch aeration, precipitating are handed over
For crop rotation, secondary settling tank is not set.Fundamental type has: furthermore A, VR, D and four kinds of T-type have four-channel type oxidation channel etc..
A type oxidation ditch is that single-groove works alternatively formula oxidation ditch, is mainly used for the removal and nitrification of BOD, and be limited to lesser
Applications are handled, the length of each operation periods time is short to the period depending on sewage intermittent discharge.
VR type oxidation ditch is also that single-groove works alternatively formula oxidation ditch, and main is also the removal and nitrification for BOD, feature
It is that oxidation ditch is divided into the of substantially equal two parts of volume, changes the direction of rotation for turning brush, using timing to change water flow in ditch
Direction makes two parts oxidation ditch alternately as aeration zone and settling zone, does not set secondary settling tank, is not required to set sludge refluxing apparatus.
D type oxidation ditch is that double ditches work alternatively formula oxidation ditch, is generally seized by identical two oxidation ditches of pool capacity, two
Alternately as aeration tank and sedimentation basin, main is also the removal and nitrification for BOD for ditch series connection.D type processing capacity is 1500
Between~20000 population equivalents, but turn brush theoretical utilization rate only 37.5% be the system maximum feature.
T-type oxidation ditch is that three ditches work alternatively formula oxidation ditch system.The system build one in by the oxygen flower ditch group of 3 equal capacity
It rising and is run as a unit, is mutually connected in pairs between 3 oxidation ditches, two sides oxidation ditch plays aeration and precipitating double action,
Intermediate oxidation ditch is aerated always, does not set secondary settling tank and sludge refluxing apparatus, is had removal BOD and is nitrified the function of denitrogenation
Can, turn brush practical efficiency theoretical value and reaches 58%.
Four-channel type oxidation channel forms a sewage treatment unit by 4 oxidation ditches, is designed with aerator in each ditch, and 4
It is mutually connected in pairs between ditch, two sides oxidation ditch plays aeration and precipitating double action, does not set secondary settling tank and sludge refluxing apparatus, has
There is removal BOD and nitrify the function of denitrogenation, capacity utilization theoretical value is increased to 69%.
Although traditional alternative expression oxidation ditch has the advantages that many, but asking for efficiency and function is influenced there are some
Topic, mainly has.
Capacity utilization is not high.Although four-channel type oxidation channel volume theory utilization rate increases compared with three working position,
But since alternately disengaging and deflecting flowing will cause activated sludge concentration difference between each ditch to sewage, clarifier sludge concentration is high, instead
Answer pond sludge concentration low, theoretical value is not achieved in capacity utilization.
Utilization rate of equipment and installations is not high.Aerator and mixing plant is generally arranged in each ditch, since capacity utilization is not high,
The utilization rate of equipment is not similarly high, and installed capacity is big.Furthermore ditch rotation in two sides is as precipitating exhalent canal, general setting water outlet
Can weir transfer, number of units is more, and control is complicated, and maintenance capacity is big.
Due to unstable anaerobic environment, biological phosphor-removing effect is undesirable.Traditional alternative expression oxidation ditch can be in ditch
Ischaemia environment is formed, realizes denitrification function, but is difficult to form stable anaerobic environment, realizes biological phosphate-eliminating.
Summary of the invention
The technical problems to be solved by the invention: it is not high for current circulating equipment of oxidation channel utilization rate, and unstable detest
The problem of oxygen environment, the present invention provides bottom aerated oxidation ditch synchronous nitration and denitrification process units.
In order to solve the above technical problems, the present invention is using technical solution as described below:
A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit, including device noumenon, described device ontology from lower and
Upper includes anoxic zone, aerobic zone, second level anoxic zone, anaerobic zone, mixed zone, and the anoxic zone side is equipped with water inlet pipe, anoxic zone
Top is equipped with aeration tube, is equipped with water inlet among aeration tube, and water inlet is attached with Rotational Cylindrical, and sewage is entered by water inlet
Rotational Cylindrical, then enter aerobic zone by Rotational Cylindrical, aerobic zone two sides of the bottom are equipped with aeration plate, sewage by filter from aerobic zone to
It is upper to enter second level anoxic zone, it is upwardly into anaerobic zone behind second level anoxic zone, anaerobic zone bottom is equipped with nitrogen tube, in nitrogen tube
Equipped with nitrogen sprayer head, and nitrogen tube is attached with nitrogen pump, and the sewage in the anaerobic zone enters mixing upwardly through filter
Area, mixed zone top are equipped with natural ventilation port close to filter side, and the other side of natural ventilation port is equipped with partition, mixed zone bottom
Water outlet is connected, while mixed zone bottom is equipped with sludge outlet.
The aeration plate includes turntable, bends towards escape pipe, and aeration plate is attached by turntable and aeration tube.
The aeration plate is located at aerobic zone planar base both ends.
The bending radius for bending towards escape pipe is 1.5~2.5 times of disk diameter, and bends towards the tilt angle of escape pipe
It is 40~50 °.
The Rotational Cylindrical is equipped with jet thrust, and rotation column bottom is equipped with bearing, and bearing is located on aeration tube.
It is hollow sandwich round tube among the aeration tube, gas is sprayed upwards by interlayer, and by Rotational Cylindrical
Jet thrust is aerated, and aeration tube side connects aerator.
The partition is in be uniformly distributed up and down, and upper and lower two pieces of nearest partition room gaps are 2~4cm in mixed zone.
The upper row of the partition or the partition of lower row, the spacing of adjacent two pieces of partitions are that upper and lower two pieces nearest partition rooms are empty
10~12 times of gap.
The water outlet is also connected with return pipe, and return pipe is attached with anoxic zone.
The sludge outlet is located at the lower section of water outlet and mixed zone junction.
The present invention is compared with other methods, and advantageous effects are:
The present invention after sewage is entered anoxic zone by water inlet pipe, open aerator, pass the gas through aeration tube respectively into
Enter Rotational Cylindrical, aeration plate, the sewage in anoxic zone can be injected into aerobic zone using the effect of Rotational Cylindrical, and due to
The gas that escape pipe effect makes out that bends towards in aeration plate is aerated upwards with certain orientation rotation, can make liquid well
Aerobic Process for Treatment is carried out in body, while carrying out similar stirring-type aeration to gas and liquid in rotation carries out telemechanical upwards, rises
To thrust, subsequently entering second level anoxic zone consumes the oxygen of the supplement in sewage, is the anaerobic environment of microorganism
Good basis is provided, after entering anaerobic zone, by the nitrogen of supplement, can well be arranged the oxygen in sewage
Except consumption, good anaerobic environment is created, improves denitrifying capacity, then after entering mixed zone, passes through gravity-flow ventilation
Mode, to sewage carry out nature oxygenating, avoid the excessive consumption of microorganism, microorganism can be improved using nature oxygenating
Activity, and strain supplement can be carried out well using the natural bacteria in air, and formed in partition miniature
It is nitrified again in oxidation ditch and denitrifying lasting progress, improves the treatment effect to sewage, and increase equipment
Utilization efficiency.
Detailed description of the invention
Fig. 1 is the structure chart of bottom aerated oxidation ditch synchronous nitration and denitrification process unit of the invention；
Fig. 2 is the structure chart of aeration plate in the present invention；
Fig. 3 is the structure chart of Rotational Cylindrical in the present invention；
Fig. 4 is the top view of aeration tube in the present invention；
Wherein: 1, device noumenon；2, anoxic zone；3, aerobic zone；4, second level anoxic zone；5, anaerobic zone；6, mixed zone；7, it intakes
Pipe；8, water inlet；9, Rotational Cylindrical；10, aeration plate；11, aeration tube；12, aerator；13, filter；14, nitrogen tube；15, nitrogen
Spray head；16, nitrogen pumps；17, natural ventilation port；18, partition；19, sludge outlet；20, water outlet；21, return pipe；91, it sprays
Gas head；101, turntable；102, escape pipe is bent towards；111, hollow sandwich round tube.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, technical solution in the embodiment of the present invention carry out it is clear, completely retouch
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, those skilled in the art's all other reality obtained without making creative work
Example is applied, protection scope of the present invention is belonged to.
A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit as shown in Figures 1 to 4, including device noumenon
1, described device ontology 1 is described to lack from bottom to top including anoxic zone 2, aerobic zone 3, second level anoxic zone 4, anaerobic zone 5, mixed zone 6
2 side of oxygen area is equipped with water inlet pipe 7, and aeration tube 11 is equipped at the top of anoxic zone, is equipped with water inlet 8 among aeration tube, water inlet with turn
Dynamic column 9 is attached, and sewage enters Rotational Cylindrical by water inlet, then enters aerobic zone 3, aerobic zone two sides of the bottom by Rotational Cylindrical
Equipped with aeration plate 10, sewage is upwardly into second level anoxic zone 4 from aerobic zone by filter 13, the Xiang Shangjin behind second level anoxic zone
Enter anaerobic zone 5, anaerobic zone bottom is equipped with nitrogen tube 14, and nitrogen tube is equipped with nitrogen sprayer head 15, and nitrogen tube and nitrogen pump 16 into
Row connects, and the sewage in the anaerobic zone 5 enters mixed zone 6, close 13 side of filter at the top of mixed zone upwardly through filter 13
Equipped with natural ventilation port 17, the other side of natural ventilation port is equipped with partition 18, and 6 bottom of mixed zone connects water outlet 20, mixes simultaneously
The bottom He Qu is equipped with sludge outlet 19.The aeration plate 10 includes turntable 101, bends towards escape pipe 102, and aeration plate passes through
Turntable is attached with aeration tube 11.The aeration plate 10 is located at 3 planar base both ends of aerobic zone.It is described to bend towards escape pipe 102
Bending radius be 1.5~2.5 times of 101 diameter of turntable, and the tilt angle for bending towards escape pipe is 40~50 °.The rotation
Column 9 is equipped with jet thrust 91, and rotation column bottom is equipped with bearing 92, and bearing is located on aeration tube 11.It is among the aeration tube 11
Hollow sandwich round tube 111, gas are sprayed upwards by interlayer, and are aerated by the jet thrust 91 in Rotational Cylindrical 9, and
Aeration tube side connects aerator 12.The partition 18 in mixed zone 6 in being up and down uniformly distributed, and upper and lower two pieces of nearest partitions
Between gap be 2~4cm.The upper row of the partition 18 or the partition of lower row, the spacing of adjacent two pieces of partitions are upper and lower two pieces nearest
10~12 times of partition room gap.The water outlet 20 is also connected with return pipe 21, and return pipe is attached with anoxic zone 2.Institute
State the lower section that sludge outlet 19 is located at water outlet 20 Yu 6 junction of mixed zone.
Be further described below with reference to a concrete application example to the embodiment of the present invention: certain sewage plant uses this hair
Bright, water is 1.6 ten thousand m3/ d, anoxic zone hydraulic detention time=40min, oxidation ditch total hrt=17.8h, always
Sludge age=16.8d, sludge concentration is uniform in oxidation ditch, and mixed liquid concentration is not less than 3120mg/L, average COD, NH4+- N's and TP
Removal rate is up to 91.2%, 87.6% and 84.3% respectively, and effluent quality is better than " urban wastewater treatment firm pollutant emission standard "
(GB18918-2002) regulation of level-one B standard.
The present invention is further described by specific embodiment above, it should be understood that, here specifically
Description, should not be construed as the restriction for the essence of the present invention with range, and one of ordinary skilled in the art is reading this explanation
The various modifications made after book to above-described embodiment belong to the range that the present invention is protected.
Claims (10)
1. a kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit, including device noumenon (1), which is characterized in that institute
State device noumenon (1) includes anoxic zone (2), aerobic zone (3), second level anoxic zone (4), anaerobic zone (5), mixed zone from bottom to top
(6), anoxic zone (2) side is equipped with water inlet pipe (7), is equipped with aeration tube (11) at the top of anoxic zone, be equipped among aeration tube into
The mouth of a river (8), water inlet are attached with Rotational Cylindrical (9), and sewage enters Rotational Cylindrical by water inlet, then is entered by Rotational Cylindrical
Oxygen area (3), aerobic zone two sides of the bottom are equipped with aeration plate (10), and sewage is upwardly into second level anoxic from aerobic zone by filter (13)
Area (4) is upwardly into anaerobic zone (5) behind second level anoxic zone, and anaerobic zone bottom is equipped with nitrogen tube (14), and nitrogen tube is equipped with
Nitrogen sprayer head (15), and nitrogen tube is attached with nitrogen pump (16), the sewage in the anaerobic zone (5) is upwardly through filter
(13) enter mixed zone (6), be equipped with natural ventilation port (17) close to filter (13) side at the top of mixed zone, natural ventilation port it is another
Side is equipped with partition (18), and mixed zone (6) bottom connects water outlet (20), while mixed zone bottom is equipped with sludge outlet
(19).
2. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 1, which is characterized in that the exposure
Gas disk (10) includes turntable (101), bends towards escape pipe (102), and aeration plate is attached by turntable with aeration tube (11).
3. aerated oxidation ditch synchronous nitration and denitrification process unit in bottom according to claim 1 or claim 2, which is characterized in that institute
It states aeration plate (10) and is located at aerobic zone (3) planar base both ends.
4. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 2, which is characterized in that described curved
Bending radius to escape pipe (102) is 1.5~2.5 times of turntable (101) diameter, and the tilt angle for bending towards escape pipe is 40
~50 °.
5. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 1, which is characterized in that described turn
Dynamic column (9) are equipped with jet thrust (91), and rotation column bottom is equipped with bearing (92), and bearing is located on aeration tube (11).
6. according to claim 1 or the 5 bottom aerated oxidation ditch synchronous nitration and denitrification process units, which is characterized in that institute
Stating is hollow sandwich round tube (111) among aeration tube (11), and gas is sprayed upwards by interlayer, and by Rotational Cylindrical (9)
Jet thrust (91) be aerated, and aeration tube side connection aerator (12).
7. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 1, which is characterized in that it is described every
Plate (18) is in be uniformly distributed up and down, and upper and lower two pieces of nearest partition room gaps are 2~4cm in mixed zone (6).
8. according to claim 1 or the 7 bottom aerated oxidation ditch synchronous nitration and denitrification process units, which is characterized in that institute
The upper row of partition (18) or the partition of lower row are stated, the spacing of adjacent two pieces of partitions is the 10 of upper and lower two pieces nearest partition room gaps
~12 times.
9. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 1, which is characterized in that it is described go out
The mouth of a river (20) is also connected with return pipe (21), and return pipe is attached with anoxic zone (2).
10. bottom aerated oxidation ditch synchronous nitration and denitrification process unit according to claim 1, which is characterized in that described
Sludge outlet (19) is located at the lower section of water outlet (20) Yu mixed zone (6) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510728.1A CN110117072A (en) | 2019-06-13 | 2019-06-13 | A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910510728.1A CN110117072A (en) | 2019-06-13 | 2019-06-13 | A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit |
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| CN110117072A true CN110117072A (en) | 2019-08-13 |
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| CN201910510728.1A Withdrawn CN110117072A (en) | 2019-06-13 | 2019-06-13 | A kind of bottom aerated oxidation ditch synchronous nitration and denitrification process unit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110484474A (en) * | 2019-09-06 | 2019-11-22 | 重庆沐联环境工程有限公司 | A kind of quick propagation method in scene of aerobic denitrifying bacteria |
| CN110818108A (en) * | 2019-12-17 | 2020-02-21 | 四川捷途环保服务有限公司 | Basin desilting repair system |
| CN111804198A (en) * | 2020-07-29 | 2020-10-23 | 陈丽仙 | A treatment tank for domestic sewage purifies |
| CN113912188A (en) * | 2021-11-21 | 2022-01-11 | 深圳市中信方圆建筑工程有限公司 | Low-energy-consumption sewage deep denitrification system |
| CN116395852A (en) * | 2023-05-05 | 2023-07-07 | 山东源广环保科技有限公司 | Integrated urban domestic sewage denitrification and dephosphorization process method and device |
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Application publication date: 20190813 |