CN207581466U - A kind of oxidation ditch biological treatment system - Google Patents
A kind of oxidation ditch biological treatment system Download PDFInfo
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- CN207581466U CN207581466U CN201721576302.9U CN201721576302U CN207581466U CN 207581466 U CN207581466 U CN 207581466U CN 201721576302 U CN201721576302 U CN 201721576302U CN 207581466 U CN207581466 U CN 207581466U
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- oxidation ditch
- anoxic pond
- aerobic tank
- pond
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- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
A kind of oxidation ditch biological treatment system of the utility model, sewage is flowed through by runner enters secondary settling tank after the selection pond being sequentially connected, anaerobic pond, level-one anoxic pond, level-one aerobic tank, two level anoxic pond, two level aerobic tank by water outlet, and level-one aerobic tank is also connected with level-one anoxic pond cycle.A kind of oxidation ditch biological treatment system of the utility model is laid out by changing oxidation ditch, ensures that mixed liquor in the proper flow at each position of oxidation ditch, solves oxidation ditch stage casing deposition phenomenon and ensure that effluent quality.
Description
Technical field
The utility model belongs to technical field of sewage, and in particular to a kind of oxidation ditch biological treatment system.
Background technology
Aeration and propulsion device are the very important equipment of oxidation ditch process system, and main function has three：First, it pushes away
Mixed liquor in dynamic irrigation canals and ditches can remain the flow velocity flow forward of 0.25-0.35m/s；Second is that make organic bottom in mixed liquor
Object, active sludge microorganism can obtain sufficient high-frequency contact；Its three are continuously to be oxygenated to mixed liquor, to meet
The demand of active sludge microorganism vital movement.But existing oxidation ditch system due to be laid out it is unreasonable can not there are mixed liquor
Deposition phenomenon is there is also in each position proper flow or even in the stage casing of oxidation ditch.
Utility model content
The purpose of this utility model is to provide a kind of oxidation ditch biological treatment systems, are laid out, protected by changing oxidation ditch
Mixed liquor is demonstrate,proved in the proper flow at each position of oxidation ditch, oxidation ditch stage casing deposition phenomenon is solved and ensure that effluent quality.
A kind of technical solution is used by the utility model：
A kind of oxidation ditch biological treatment system, sewage flows through the selection pond being sequentially connected by runner, anaerobic pond, level-one lack
Secondary settling tank is entered by oxidation ditch water outlet after oxygen pond, level-one aerobic tank, two level anoxic pond, two level aerobic tank, the level-one is good
Oxygen pond is also connected with level-one anoxic pond cycle.
Further, setting impeller in the anaerobic pond, and pass through valve and be connected with the entrance of the level-one anoxic pond.
Further, training wall and impeller are equipped in the level-one anoxic pond, mixed liquor is in the level-one anoxic pond
Then annularly flow flows into the level-one aerobic tank.
Further, the level-one aerobic tank is equipped with multiple gallerys, and mixed liquor after the level-one aerobic tank, return by a part
The level-one anoxic pond is flow to, another part flows into the two level anoxic pond.
Preferably, the inlet of the two level anoxic pond and the opposite both sides of middle section position set impeller to make mixing respectively
Liquid forms circulation.
Further, the two level aerobic tank is equipped with multiple gallerys.
A kind of oxidation ditch biological treatment system of the utility model is laid out by changing oxidation ditch, ensures that mixed liquor is aoxidizing
The proper flow at each position of ditch solves oxidation ditch stage casing deposition phenomenon and ensure that effluent quality.Specifically, at least have
Advantages below：
1 while have and be thoroughly mixed and the feature of two kinds of fluidised forms of plug-flow, be conducive to overcome short flow phenomenon and improve buffer capacity
Power；And since water flow process forms apparent dissolving oxygen gradient, oxygen-rich area, aerobic accumulation area are formed along water (flow) direction and is lacked
Oxygen area.
2nd, impeller has two big functions, has not only pushed mixed liquor flow forward in ditch, but also be continuously oxygenated to mixed liquor,
Two energy ranges are formed in ditch, not only improve the transfer of oxygen and are conducive to the good of activated sludge floc again with the mixing of mixed liquor
It is formed, improves Sludge Property.
3rd, power needed for whole plug-flow is low, can save energy.
4th, under impeller promotion, mixed liquor overcomes frictional resistance and curve resistance in ditch, makees in unique cyclic annular inertia
Under, the flowing of mixed liquor can be kept and activated sludge is made to be in good suspended state.
Description of the drawings
Fig. 1 is a kind of structure diagram of oxidation ditch biological treatment system of the utility model.
In figure, 1. selection ponds, 2. anaerobic ponds, 3. level-one anoxic ponds, 4. level-one aerobic tanks, 5. two level anoxic ponds, 6. two levels
Aerobic tank, 7. secondary settling tanks.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and detailed description.
A kind of oxidation ditch biological treatment system structure diagram provided by the utility model is as shown in Figure 1, sewage passes through runner
Flow through the selection pond 1 being sequentially connected, anaerobic pond 2, level-one anoxic pond 3, level-one aerobic tank 4, two level anoxic pond 5, two level aerobic tank 6
Secondary settling tank 7 is entered by oxidation ditch water outlet afterwards, level-one aerobic tank 4 is also connected with the cycle of level-one anoxic pond 3.Specifically, anaerobism
Setting impeller in pond 2, and pass through valve and be connected with the entrance of level-one anoxic pond 3.And level-one anoxic pond 3 in be equipped with training wall and
Impeller, mixed liquor flow and then flow into level-one aerobic tank 4 in 3 annular of level-one anoxic pond.Level-one aerobic tank is equipped with multiple corridors
Road, for mixed liquor after level-one aerobic tank 4, a part is back to level-one anoxic pond, and another part flows into two level anoxic pond 5.It is preferred that
, the inlet of two level anoxic pond 5 and the opposite both sides of middle section position set impeller that mixed liquor is made to form circulation respectively.Two level
Aerobic tank 6 is equipped with multiple gallerys.
The operation principle of the utility model is as follows：
Step 1, sewage enters selection pond 1 through pipeline, with the reflux discharged from sludge pump reflux sludge tube in selection pond
After sludge is contacted, formation is high eligible, into anaerobic pond 2；In the present embodiment, which is DN600 water inlet pipes.
Step 2, the cyclic annular operation under the action of impeller of the mixed liquor in anaerobic pond 2, then enters level-one through valve and lacks
Oxygen pond 3；
Step 3, the training wall and impeller set in level-one anoxic pond 3 makes mixed liquor in 3 annular stream of level-one anoxic pond
It is dynamic, then flow into level-one aerobic tank 4；In the present embodiment, two groups of impellers of setting in level-one anoxic pond 3, every group two；Training wall
For two sides.
Step 4, the gallery that level-one aerobic tank 4 is set makes mixed liquor be back to level-one by 4 rear portion of level-one aerobic tank
Step 3 is repeated in anoxic pond 3, another part then enters two level anoxic pond 5；In the present embodiment, level-one aerobic tank contains four gallerys, no
If impeller.
Step 5, the impeller that on the right side of the inlet of two level anoxic pond 5 and middle section position left side Parallel to the flow direction is respectively set makes
The mixed liquor of inflow forms circulation, reduces the sludgd deposition phenomenon in two level anoxic pond 5, and mixed liquor is flow in two level anoxic pond 5
Duan Shi, the impeller effect through middle section position setting make part mixed-liquor return be set to 5 inlet of two level anoxic pond through inlet
The impeller effect put flow to 5 stage casing of two level anoxic pond again, remaining mixed liquor directly flows to pond tail through gallery, and flows into two level
Aerobic tank 6；
Step 6, mixed liquor reaches oxidation ditch water outlet after two level aerobic tank 6, subsequently into secondary settling tank 7, that is, completes dirty
The biological treatment process of water.
Claims (6)
1. a kind of oxidation ditch biological treatment system, which is characterized in that sewage flowed through by runner the selection pond (1) being sequentially connected,
Anaerobic pond (2), level-one anoxic pond (3), level-one aerobic tank (4), two level anoxic pond (5), two level aerobic tank pass through oxidation ditch after (6)
Water outlet enters secondary settling tank (7), and the level-one aerobic tank (4) is also connected with level-one anoxic pond (3) cycle.
2. a kind of oxidation ditch biological treatment system as described in claim 1, which is characterized in that set in the anaerobic pond (2)
Impeller, and pass through valve and be connected with the entrance of the level-one anoxic pond (3).
3. a kind of oxidation ditch biological treatment system as described in claim 1, which is characterized in that in the level-one anoxic pond (3)
Equipped with training wall and impeller, mixed liquor flows and then flows into the level-one aerobic tank in level-one anoxic pond (3) annular
(4)。
4. a kind of oxidation ditch biological treatment system as described in claim 1, which is characterized in that the level-one aerobic tank is equipped with more
A gallery, for mixed liquor after the level-one aerobic tank (4), a part is back to the level-one anoxic pond, and another part flows into institute
State two level anoxic pond (5).
5. a kind of oxidation ditch biological treatment system as described in claim 1, which is characterized in that the two level anoxic pond (5)
Inlet and the opposite both sides of middle section position set impeller that mixed liquor is made to form circulation respectively.
6. a kind of oxidation ditch biological treatment system as described in claim 1, which is characterized in that the two level aerobic tank (6) sets
There are multiple gallerys.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721576302.9U CN207581466U (en) | 2017-11-23 | 2017-11-23 | A kind of oxidation ditch biological treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721576302.9U CN207581466U (en) | 2017-11-23 | 2017-11-23 | A kind of oxidation ditch biological treatment system |
Publications (1)
| Publication Number | Publication Date |
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| CN207581466U true CN207581466U (en) | 2018-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721576302.9U Active CN207581466U (en) | 2017-11-23 | 2017-11-23 | A kind of oxidation ditch biological treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746108A (en) * | 2017-11-23 | 2018-03-02 | 天津市华博水务有限公司 | A kind of oxidation ditch biological treatment system and method |
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2017
- 2017-11-23 CN CN201721576302.9U patent/CN207581466U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107746108A (en) * | 2017-11-23 | 2018-03-02 | 天津市华博水务有限公司 | A kind of oxidation ditch biological treatment system and method |
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