CN108249571A - Sewage-treatment plant - Google Patents
Sewage-treatment plant Download PDFInfo
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- CN108249571A CN108249571A CN201810269846.3A CN201810269846A CN108249571A CN 108249571 A CN108249571 A CN 108249571A CN 201810269846 A CN201810269846 A CN 201810269846A CN 108249571 A CN108249571 A CN 108249571A
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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
- C02F3/302—Nitrification and denitrification treatment
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
This application discloses a kind of sewage-treatment plants, including pond body, pond body includes first chamber, the second chamber around first chamber distribution and the third chamber around second chamber distribution, one is anaerobic zone in first chamber, second chamber and third chamber three, remaining one of both is low-oxygen aeration area, and another is settling zone；The first water stream channel is provided between anaerobic zone and low-oxygen aeration area, the second water stream channel is provided between low-oxygen aeration area and settling zone；The bottom in low-oxygen aeration area is provided with aerator.The sewage-treatment plant of the application can skid mounted equipment for one kind, anoxic, hypoxemia, precipitation function are concentrated in same pond body device, it realizes each functions such as Anaerobic Treatment, hypoxemia processing, sludge reflux, mud-water separation, has the advantages that floor space is small, invests low, stable effluent quality.
Description
Technical field
The disclosure relates generally to sewage treatment field more particularly to a kind of sewage-treatment plant.
Background technology
It is one kind commonplace in current sewage treatment process, also known as activated sludge using microorganism treating sewage
Method.Purpose using microorganism treating sewage be remove sewage in organic matter and holophytic nutrition object and by biology wad a quilt with cotton
Solidifying removal colloidal solid, microorganism are metabolized in the process.
Activated sludge process can be divided into aerobic method and anaerobic process.In aerobic environment, microorganism utilizes the dissolved oxygen in water, oxygen
Change degradation water pollutant, then carry out the lock out operation of microorganism and water, achieve the purpose that purify sewage with this；In anaerobism ring
In border, Microbiological release phosphorus, while partial organic substances carry out aminating reaction.
AO techniques are a kind of common sewage treatment process referred to as (anaerobic-aerobic process).
At present, using AO techniques as removal principle sewerage be mostly pool-type structure, fixed setting, sludge circulation than it is small,
Nitric efficiency is low, and by sewage disposal to complying with standard, the residence time of sewage is long, and treatment effeciency is low, all there is investment mostly
The shortcomings of height, takes up a large area high energy consumption, and impact resistance is weak.
Invention content
In view of drawbacks described above of the prior art or deficiency, are intended to provide a kind of sewage-treatment plant.
The present invention provides a kind of sewage-treatment plant, and including pond body, the pond body includes first chamber, around described first
The second chamber of chamber distribution and the third chamber around second chamber distribution, the first chamber, second chamber
One is anaerobic zone in room and the third chamber three, remaining one of both is low-oxygen aeration area, and another is settling zone；
Be provided with the first water stream channel between the anaerobic zone and the low-oxygen aeration area, the low-oxygen aeration area with it is described
The second water stream channel is provided between settling zone；
The bottom in the low-oxygen aeration area is provided with aerator.
Preferably, the first chamber be the settling zone, the second chamber be the anaerobic zone, the third chamber
For low-oxygen aeration area；
First partition is equipped between the first chamber and the second chamber, between the second chamber and third chamber
Equipped with second partition, the water inlet of the anaerobic zone is provided on the second partition；Second water stream channel includes setting
Water outlet on the second partition and the outlet conduit being connected with the water outlet, the outlet conduit pass through described the
One partition board is connected with the first chamber.
Preferably, at least two pushing flow mixers are provided in the anaerobic zone, the pushing flow mixer is along the anaerobism
Water (flow) direction in area is evenly distributed with.
Preferably, the orthographic projection on the water inlet and each leisure pool bottom of first water stream channel is by described in
Orthographic projection of the second partition in the pool bottom is divided into the first boundary and the second boundary, and the length on first boundary is small
In the length of the second boundary；
The pushing flow mixer pushes flow by the water inlet, is flowed along the second boundary and flow through described first
Water stream channel.
Preferably, at first water stream channel, air plug-flow area is equipped in the low-oxygen aeration area.
Preferably, the orthographic projection on first water stream channel and each leisure pool bottom of the water outlet is by described in
Orthographic projection of the second partition in the pool bottom is divided into third boundary and the 4th boundary, and the third boundary length is less than
The length on the 4th boundary；
Be provided in the air plug-flow area at least one promotion flow by first water stream channel, along the described 4th
Flow air impeller of the cocurrent through the water outlet in boundary.
Preferably, the bottom of the first chamber and the second chamber is contour and higher than the pool bottom.
Preferably, the upper inner of the side wall of the first chamber irises out sink equipped with one, on the side wall of the effluent trough
It is provided with multiple inlet openings；The effluent trough connects drainage pipeline, and the drainage pipeline sequentially passes through the first partition, described
The side wall of second partition and the pond body.
Preferably, the center absolute altitude of the water inlet is higher than the center absolute altitude of the water outlet；
The center absolute altitude of the outlet conduit is higher than the center absolute altitude of the drainage pipeline.
Preferably, the settling zone is internally provided with sludge bucket；The top of the pond body is equipped with cover, is set in the cover
It is equipped with sludge reflux pump；And/or
At least one nitrification liquid reflux pump is provided on the lower part of the second partition.
Preferably, the section of the pond body is circle, and the section of the first chamber is circle, and the second chamber is cut
Face is circular ring shape.
Preferably, the radial width between the second partition and the pond body side wall is more than the radial direction of the second chamber
Width.
Sewage-treatment plant provided by the invention has the following advantages：
1st, this sewage-treatment plant includes anaerobic zone, low-oxygen aeration area and settling zone, by anoxic, hypoxemia, precipitation function collection
In in same pond body device, realize Anaerobic Treatment, hypoxemia processing, sludge reflux, each function such as mud-water separation；It greatly reduces
Floor space reduces construction investment, reduces cost of sewage disposal；
2nd, the exemplary dissolved oxygen DO that low-oxygen aeration area is effectively controlled by aerator of the present invention<0.5mg/L, at this
Air Exposure is carried out under part, is carried out at the same time nitrification and denitrification effect, so as to effectively remove part organic matter difficult to degrade, is simplified
Traditional denitrogenation flow, has saved cost, has improved nitric efficiency；
3rd, the section of the pond body of the exemplary sewage-treatment plant of the present invention is circle, and the section of settling zone is round, anaerobism
The section in area is circular ring shape；Radial width between second partition and the side wall of pond body is more than the radial width of anaerobic zone, can
It realizes and is recycled than times greatly, while maintain higher sludge concentration, improve the stability of the device treated sewage；
4th, the sewage containing high ammonia nitrogen, high COD, whole device structure can be effectively treated in the exemplary sewage-treatment plant of the invention
Into effective integrated biological treatment system, no internal moving components, being integrated of whole device can skid mounted equipment, be not only completed pair
The thorough removal of organic matter, simplifies process flow, also has transport facility, installs succinct, quick, the spy of short construction period
Point,
Description of the drawings
By reading the detailed description made to non-limiting example made with reference to the following drawings, the application's is other
Feature, objects and advantages will become more apparent upon：
Fig. 1 is a structure diagram of sewage-treatment plant provided in an embodiment of the present invention；
Fig. 2 is another structure diagram of sewage-treatment plant provided in an embodiment of the present invention；
Fig. 3 is by the structure diagram of inlet and outlet pipe lines arranged in sewage-treatment plant provided in an embodiment of the present invention；
Fig. 4 is the sectional view in A-A directions in Fig. 3；
Fig. 5 is the sectional view in B-B directions in Fig. 3；
Fig. 6 is the sectional view in C-C directions in Fig. 3；
Fig. 7 is the walkway board floor map of sewage-treatment plant provided in an embodiment of the present invention.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention rather than the restriction to the invention.It also should be noted that in order to
Convenient for description, illustrated only in attached drawing with inventing relevant part.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The embodiment of the present invention provides a kind of sewage-treatment plant, and including pond body, pond body includes first chamber 1, around the
The second chamber 2 of one chamber 1 distribution and the third chamber 3 being distributed around second chamber 2, first chamber, second chamber and the
One is anaerobic zone in three chamber threes, remaining one of both is low-oxygen aeration area, and another is settling zone；Anaerobic zone is exposed with hypoxemia
The first water stream channel is provided between gas area, the second water stream channel is provided between low-oxygen aeration area and settling zone；Low-oxygen aeration
The bottom in area is provided with aerator 4.
During the sewage-treatment plant treated sewage, sewage carries out anti-nitration reaction under the anaerobic environment in anaerobic zone；From
Treated in anaerobic zone, and mixed liquor enters low-oxygen aeration area through the first water stream channel, carries out nitration reaction and denitrification is anti-
It should；Mixed liquor after being reacted in low-oxygen aeration area enters through the second water stream channel carries out mud-water separation in settling zone.
As an alternative embodiment, as shown in Figures 1 to 6, first chamber 1 is settling zone, and second chamber 2 is detests
Oxygen area, third chamber 3 are low-oxygen aeration area；
First partition 5 is equipped between first chamber 1 and second chamber 2, the is equipped between second chamber 2 and third chamber 3
Two partition boards 6 are provided with the water inlet 7 of anaerobic zone on second partition 6；Second water stream channel includes being arranged on going out on second partition
The mouth of a river 8 and the outlet conduit 9 being connected with water outlet 8, outlet conduit 9 are connected across first partition 5 with first chamber 1.
In addition, the first water stream channel 10 is preferably arranged on the water outlet through-hole of 6 lower part of second partition, close to second partition
6 bottom end setting.
Further, at least two pushing flow mixers 11 are provided in anaerobic zone, pushing flow mixer 11 is along anaerobic zone
Water (flow) direction is evenly distributed with, effectively to push the flowing of water in anaerobic zone.
Further, the orthographic projection in 7 and first water stream channel of water inlet, 10 each comfortable pool bottom exists second partition
Orthographic projection in pool bottom is divided into the first boundary and the second boundary, and the length on the first boundary is less than the length of the second boundary；
Pushing flow mixer 11 pushes flow to be flowed by water inlet 7, along the second boundary and flow through the first water stream channel 10.
It designs in this way, sewage enters from water inlet 7 in anaerobic zone, under the action of the 11 of pushing flow mixer, pushes sewage
It can fully be reacted in the region before flowing through the first water stream channel 10 after anaerobic zone is entered, by the first water stream channel
Part mixed liquor enters low-oxygen aeration area when 10, and part mixed liquor is mixed with the sewage subsequently entered, so circulated.Reference
Fig. 1 and Fig. 3, it is uniformly distributed there are two pushing flow mixer 11 along water (flow) direction in anaerobic zone, to push circulating for flow.
In addition, 7 outside of water inlet can connect an inlet channel, inlet channel can be erected at the top of pond body and water inlet phase
Even；Alternatively, as shown in fig. 6, inlet channel 12 is connected to water inlet 7, water inlet pipe horizontal through pool wall, the second partition 2 of pond body
The center absolute altitude in road 12 is identical with the center absolute altitude of water inlet 7.When having sewage reaction in pond body, the height of water inlet is higher than first
The indoor liquid level of chamber is higher than.
Further, at the first water stream channel 10, air plug-flow area 13 is equipped in low-oxygen aeration area.The air plug-flow area
13 are made of two pieces of different partition boards of height, and two pieces of partition boards are connected respectively with pool wall, second partition；Two pieces of partition boards are hanged including bottom
Empty third partition board, there are certain space, top is higher by liquid level for bottom of the bottom of third partition board away from low-oxygen aeration area；It is another every
Plate is less than the 4th partition board of liquid level for top, and the bottom of the 4th partition board is connected with the bottom in low-oxygen aeration area.
The mixed liquor in low-oxygen aeration area is pushed to flow by air plug-flow area 13, with the mixed liquor come in out of anaerobic zone
Mixing, cyclic hardening reaction effect, to effectively remove COD, ammonia nitrogen, TN and TP.
Further, the orthographic projection on the first water stream channel 10 and each comfortable pool bottom of water outlet 8 exists second partition
Orthographic projection in pool bottom is divided into third boundary and the 4th boundary, and third boundary length is less than the length on the 4th boundary；
At least one promotion flow is provided in air plug-flow area 13 to flow by the first water stream channel 10, along the 4th boundary
And flow through the air impeller 14 of water outlet 8.
It designs in this way, the part mixed liquor in anaerobic zone is enabled to enter low-oxygen aeration area from the first water stream channel 10
It is interior, it can fully be reacted before water outlet 8 is flowed through, ensure the reaction effect of sewage nitration denitrification in low-oxygen aeration area.
Air impeller air-blowing in air plug-flow area 13 pushes liquid to rise, the sewage of air plug-flow zone position is caused to produce
Raw density contrast, pushes sewage to enter the plug-flow area between third partition board and the 4th partition board by the bottom of third partition board, and liquid rises
It is moved by the subsequent afterflow in top of the 4th partition board, and then realizes the purpose for pushing liquid circulation.So set, it realizes dirty in pond body
Water is larger than cycle again, while improves the impact resistance of system.
Further, the bottom of the first chamber 1 and the second chamber 2 is contour and higher than the pool bottom.Such as
Shown in Fig. 2, Fig. 4~Fig. 6, i.e., settling zone, anaerobic zone bottom are contour, and higher than pool bottom；The radial section in low-oxygen aeration area
In U shape, pool bottom is the bottom in low-oxygen aeration area.
In the present embodiment, aerator 4 has self-cleaning function, including the blower device and blower device set gradually
Connected air feed supervisor, the air feed branch pipe connected with air feed supervisor and the aeration flexible pipe for connecting air feed branch pipe, aeration flexible pipe are remote
One end from air feed branch pipe is connect with drawstring, and drawstring is connected to by hook at the top of pond body.Micropore is equipped with above aeration flexible pipe, it should
Micropore, which meets from aeration flexible pipe, provides oxygen into low-oxygen aeration area, and the mixed liquor in low-oxygen aeration area will not enter aeration flexible pipe
It is interior.Entire pool bottom parallel laid is equipped with more aeration flexible pipes, can according to oxygen demand number, the quantity of aeration flexible pipe is set.
Further, the upper inner of the side wall of the first chamber 1 irises out sink 15 equipped with one, the effluent trough 15
Multiple inlet openings are provided on side wall；The effluent trough 15 connects drainage pipeline 16, and the drainage pipeline 16 sequentially passes through described
The side wall of first partition 5, the second partition 6 and the pond body.It can be U-shaped or V-type to be discharged slot cross-section, when settling zone internal upper part
When the height of clear water can touch inlet opening, effluent trough is entered by inlet opening, the top by 15 separation and precipitation area of effluent trough is clear
Water is discharged the supernatant isolated by drainage pipeline 16.
Further, the center absolute altitude of water inlet 7 is higher than the center absolute altitude of water outlet 8；The center absolute altitude of outlet conduit 9 is high
In the center absolute altitude of drainage pipeline 16.
As shown in fig. 6, water inlet 7 connects an inlet channel 12 consistent with its center absolute altitude, and there is the sewage anti-in pond body
At once, the height of water inlet 7 is higher than higher than the liquid level in first chamber；
The center absolute altitude of water outlet 8 is less than the center absolute altitude of water inlet 7, and the mixed liquor after being reacted in anaerobic zone enters low
It is reacted in oxygen aeration zone, part mixed liquor is automatically flowed into settling zone during by water outlet 8；
The center absolute altitude of water outlet 8 is consistent with the center absolute altitude of outlet conduit 9 in the embodiment, the center of outlet conduit 9
Absolute altitude is higher than the center absolute altitude of drainage pipeline 16, and the part mixed liquor after being reacted in low-oxygen aeration area enters from water outlet 8 to be precipitated
Area collects supernatant by effluent trough, supernatant is discharged by drainage pipeline 16.
It is so designed that each water stream channel or water pipe, to enter in pond body in sewage, can pass through successively well
Each reaction zone, until discharge supernatant, realizes sewage disposal.
Further, the settling zone is internally provided with sludge bucket 17；The top of the pond body is equipped with cover, the cover
On be provided with sludge reflux pump 18, there is pipeline to be connected between sludge reflux pump 18 and sludge bucket 17, and sludge reflux pump 18 also connects
Connect a pipeline for stretching into inlet end in anaerobic zone.Sludge bucket 17 collects sludge, and sludge reflux pump 18 is from the sludge of settling zone
In bucket 17 in refluxing portion sludge to anaerobic zone, maintain have higher sludge concentration in anaerobic zone, to carry out anti-nitration reaction；
And/or
At least one nitrification liquid reflux pump 19 is provided on the lower part of the second partition 6, passes through digestive juice reflux pump 19
Refluxing portion nitrification liquid enters in anaerobic zone out of low-oxygen aeration area.The dirt that sewage flows back in anaerobic zone and out of settling zone
Mud, the nitrification liquid to flow back out of low-oxygen aeration area mixing, carry out denitrification in the environment of the anaerobism of anaerobic zone and anaerobic phosphorus release are anti-
It should.
Further, the section of the pond body is circle, and the section of the first chamber 1 is round, the second chamber 2
Section be circular ring shape.So set, reactionless dead angle in each chamber (i.e. each reaction zone), realizes that sewage is respectively reacted in pond body
It is fully reacted in area.
Further, the radial width between second partition 6 and pond body side wall is more than the radial width of second chamber 2, real
Now big ratio times recycles, while maintains higher sludge concentration, improves the stability of whole system.
Further, optional 4~15 meters of the height of pond body, preferably 6~12 meters, the whole device skid more compact for structure
Equipment.
Further, online dissolved oxygen meter is provided in low-oxygen aeration area, online dissolved oxygen meter connects dissolved oxygen control system,
Dissolved oxygen relatively low in pond body is controlled by real time monitoring, so as to extend sludge age so that whole system maintains higher sludge
Concentration.
The sewage-treatment plant that the embodiment provides preferably connects the first evacuated tube 20 in the lower part of first chamber, can use
Water in emptying settling zone；It is preferred that the second evacuated tube 21 is connected in pool wall lower part, since anaerobic zone and low-oxygen aeration area pass through
First water stream channel 10 is connected, the water that the second evacuated tube 21 can be used in emptying anaerobic zone and low-oxygen aeration area.First emptying
20 and second evacuated tube 21 of pipe can break down used in device maintenance when, empty respective reaction zones in water.
Sewage-treatment plant provided in this embodiment combines anaerobic zone, low-oxygen aeration area, settling zone together, forms high
Integral biological processing system, no internal moving components are imitated, small-scale high ammonia nitrogen, height can be effectively treated for one kind in whole device
The integrated skid mounted equipment of COD waste water.
Sewage-treatment plant the being integrated skid mounted equipment, such as cylindrical tank container.As shown in fig. 7, hold in tank body
The side of device, which is equipped with, prolongs tank winding stair 22, and aisle 23 is equipped with above tank body, facilitates the maintenance and inspection device.
The sewage-treatment plant is not only reduced investment outlay and operating cost, and makes the design and fortune of entire activated Sludge System
Row is more flexible, has many advantages, such as that control is simple, operation is convenient, floor space is small.Meanwhile what is set in low-oxygen aeration area has
The problems such as aerator of self-cleaning function effectively can avoid water distribution system from blocking.In addition, the pond body of sewage-treatment plant is cut
Face is circle, and the section of settling zone is circle, and the section of anaerobic zone is circular ring shape；Diameter between second partition and the side wall of pond body
It is more than the radial width of anaerobic zone to width, can realizes that big ratio times recycles, while maintains higher sludge concentration, improve the dress
Put the stability of treated sewage.
The embodiment of the present invention also provides a kind of sewage water treatment method of the application sewage-treatment plant, includes the following steps：
S10, sewage are entered in anaerobic zone, with the sludge that is back to from settling zone into anaerobic zone and from low-oxygen aeration
Area flows back into the nitrification liquid mixing in anaerobic zone, and denitrification and anaerobic phosphorus release reaction are carried out in the environment of the anaerobism of anaerobic zone；
S20, entered in low-oxygen aeration area by the part mixed liquor after step S10 reactions, in dissolved oxygen DO<0.5mg/L
Under the conditions of, COD, ammonia nitrogen, TN and TP are absorbed and degraded using microorganism, it is anti-with denitrification to be carried out at the same time nitration reaction
It should；
S30, reacted by step S20 after part mixed liquor enter mud-water separation carried out in settling zone, the dirt after separation
Mud is back to the water inlet end of anaerobic zone by sludge reflux pump, and supernatant outside effluent trough above settling zone through arranging.
Further, the mixing liquid measure of anaerobic zone and the wastewater influent amount of anaerobic zone 4 are back in step S10 from settling zone
Volume ratio ＞ 1；
In step S10 the nitrification liquid measure of anaerobic zone 4 and the wastewater influent amount of anaerobic zone 4 are back to from low-oxygen aeration area 5
Volume ratio ＞ 2.So set, realize a large amount of cycles of mixed liquor in pond.
Further, sludge concentration is controlled in 4~8g/L in anaerobic zone, low-oxygen aeration area.
In addition, the surface loading of settling zone is in 1m3/m2.h, the residence time of water is controlled in 10~35h in settling zone.
The preferred embodiment and the explanation to institute's application technology principle that above description is only the application.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology that the specific combination of above-mentioned technical characteristic forms
Scheme, while should also cover in the case where not departing from inventive concept, it is carried out by above-mentioned technical characteristic or its equivalent feature arbitrary
The other technical solutions for combining and being formed.Such as features described above has similar functions with (but not limited to) disclosed herein
The technical solution that technical characteristic is replaced mutually and formed.
Claims (12)
1. a kind of sewage-treatment plant, which is characterized in that including pond body, the pond body includes first chamber, around described first
The second chamber of chamber distribution and the third chamber around second chamber distribution, the first chamber, second chamber
One is anaerobic zone in room and the third chamber three, remaining one of both is low-oxygen aeration area, and another is settling zone；
The first water stream channel, the low-oxygen aeration area and the precipitation are provided between the anaerobic zone and the low-oxygen aeration area
The second water stream channel is provided between area；
The bottom in the low-oxygen aeration area is provided with aerator.
2. sewage-treatment plant according to claim 1, which is characterized in that the first chamber be the settling zone, institute
Second chamber is stated as the anaerobic zone, the third chamber is low-oxygen aeration area；
First partition is equipped between the first chamber and the second chamber, is equipped between the second chamber and third chamber
Second partition is provided with the water inlet of the anaerobic zone on the second partition；Second water stream channel includes being arranged on institute
State the water outlet on second partition and the outlet conduit being connected with the water outlet, the outlet conduit pass through described first every
Plate is connected with the first chamber.
3. sewage-treatment plant according to claim 2, which is characterized in that be provided at least two in the anaerobic zone and push away
Blender is flowed, the pushing flow mixer is evenly distributed with along the water (flow) direction in the anaerobic zone.
4. sewage-treatment plant according to claim 3, which is characterized in that
Orthographic projection on the water inlet and each leisure pool bottom of first water stream channel exists the second partition
Orthographic projection in the pool bottom is divided into the first boundary and the second boundary, and the length on first boundary is less than described second
The length on boundary；
The pushing flow mixer pushes flow by the water inlet, is flowed along the second boundary and flow through first flow
Channel.
5. sewage-treatment plant according to claim 2, which is characterized in that described low at first water stream channel
Air plug-flow area is equipped in oxygen aeration zone.
6. sewage-treatment plant according to claim 5, which is characterized in that
Orthographic projection on first water stream channel and each leisure pool bottom of the water outlet exists the second partition
Orthographic projection in the pool bottom is divided into third boundary and the 4th boundary, and the third boundary length is less than the 4th side
The length on boundary；
Be provided in the air plug-flow area at least one promotion flow by first water stream channel, along the 4th boundary
Flow and flow through the air impeller of the water outlet.
7. sewage-treatment plant according to claim 2, which is characterized in that
The bottom of the first chamber and the second chamber is contour and higher than the pool bottom.
8. sewage-treatment plant according to claim 2, which is characterized in that
The upper inner of the side wall of the first chamber irises out sink equipped with one, be provided on the side wall of the effluent trough it is multiple into
Water hole；The effluent trough connects drainage pipeline, and the drainage pipeline sequentially passes through the first partition, the second partition and institute
State the side wall of pond body.
9. sewage-treatment plant according to claim 8, which is characterized in that
The center absolute altitude of the water inlet is higher than the center absolute altitude of the water outlet；
The center absolute altitude of the outlet conduit is higher than the center absolute altitude of the drainage pipeline.
10. sewage-treatment plant according to claim 1, which is characterized in that
The settling zone is internally provided with sludge bucket；The top of the pond body is equipped with cover, and sludge is provided in the cover and is returned
Stream pump；And/or
At least one nitrification liquid reflux pump is provided on the lower part of the second partition.
11. according to claim 2-10 any one of them sewage-treatment plants, which is characterized in that
The section of the pond body is circle, and the section of the first chamber is circle, and the section of the second chamber is circular ring shape.
12. sewage-treatment plant according to claim 11, which is characterized in that
Radial width between the second partition and the pond body side wall is more than the radial width of the second chamber.
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| CN201810269846.3A CN108249571A (en) | 2018-03-29 | 2018-03-29 | Sewage-treatment plant |
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| CN201810269846.3A CN108249571A (en) | 2018-03-29 | 2018-03-29 | Sewage-treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845011A (en) * | 2019-12-17 | 2020-02-28 | 清华大学 | Multi-medium biological filter and distributed sewage treatment device |
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| CN110845011B (en) * | 2019-12-17 | 2024-06-07 | 吉林十亩恬源环境科技有限公司 | Multi-medium biological filter and distributed sewage treatment device |
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