CN108083430A - A kind of attached wall impeller for oxidation ditch process - Google Patents
A kind of attached wall impeller for oxidation ditch process Download PDFInfo
- Publication number
- CN108083430A CN108083430A CN201810093210.8A CN201810093210A CN108083430A CN 108083430 A CN108083430 A CN 108083430A CN 201810093210 A CN201810093210 A CN 201810093210A CN 108083430 A CN108083430 A CN 108083430A
- Authority
- CN
- China
- Prior art keywords
- attached wall
- blade
- annulus
- oxidation ditch
- diversion trench
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1257—Oxidation ditches
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/20—Activated sludge processes using diffusers
- C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- 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 invention belongs to field of sewage treatment equipment, and in particular to a kind of attached wall impeller for oxidation ditch process.Technical solution of the present invention is as follows：A kind of attached wall impeller for oxidation ditch process including host, submersible motor, bearing, blade, water inlet, grid, annulus diversion trench, gathers water outlet.The present invention forms current driving effect using wall attachment effect, realizes the big flow velocity of small-power, and adapts to different pond body depth, and oxidation ditch process is enable to be promoted and applied in north cold area, has many advantages, such as that equipment is simple, plug-flow effect is good, the loss of flood peak is small.
Description
Technical field
The invention belongs to field of sewage treatment equipment, and in particular to a kind of attached wall impeller for oxidation ditch process.
Background technology
Oxidation ditch (Oxidation Ditch) technique, also known as aoxidizes canal, is a kind of deformation work based on activated sludge process
Skill has many advantages, such as that effluent quality is good and stablizes, excess sludge production is low, operational management is simple.Oxidation ditch sewage disposal is
Domestic and international saprobia oxidation processes, the ideal technique rationally discharged at present.When it is a kind of low organic loading, stop
Between long active sludge treatment structures, be innovating technologies for activated sludge process.Compared with other sewage treatment process, oxidation ditch
Low cost, easy to operate, maintenance cost is few, has very big dilution capacity to high-concentration waste water, thus effluent quality is good, it has also become Europe
Continent, Australia, South America, a kind of important sewage disposal technology in North America and China.
Oxidation ditch process is mainly made of water channel and aeration flow pulling equipment two parts, wherein aeration flow pulling equipment is as oxidation
Core mechanical equipment in ditch technique is one of key factor for influencing oxidation ditch treatment effeciency, energy consumption and stability.Aeration pushes away
Function of the flow device in oxidation ditch mainly has at 3 points：1 supplies oxygen to mixed liquor；2 make organic pollution in mixed liquor, activity dirty
Mud, dissolved oxygen three are sufficiently mixed, contact；3 promote current with certain flow velocity (being not less than 0.25m/s) along pond long circulating stream
It is dynamic.Wherein, it is thirdly particular/special requirement of the oxidation ditch to aerator, oxidation ditch is kept in terms of technology characteristics to have important
Meaning.It is surface aeration machine, jet stream respectively at present both at home and abroad there are mainly three types of the inside aeration flow pulling equipments of oxidation ditch process
The aeration mode that aerator, bottom micro-pore aeration and plug-flow are combined.Wherein, surface aeration is most common aeration mode, main
It is divided into two major class of horizontal bearing formula and footstep bearing formula, horizontal bearing formula surface aeration machine, which mainly has, turns brush or turntable (or plate-spinning)
Aerator, footstep bearing formula aerator mainly have float-type footstep bearing surface aeration machine and inverted umbrella-shaped surface aerator etc..Surface exposes
The characteristics of gas is that oxygenation capacity is strong, convenient to install and maintain.But the shortcomings that surface aeration, has：(1) leaching of presently used rotary aeration disc
It is preferably 0.23~0.53m not have depth, and rotary-brush type surface aeration machine submergence is 0.3m, and the submergence of footstep bearing formula aeration machine impeller is deep
0.04m or so is spent, has shown that the submergence of increase surface aeration equipment impeller and linear velocity help within the specific limits through research
Head is promoted in increase, but excessive submergence and rotating speed can cause the decline of horizontal flow velocity, and ditch can be reduced with depth of water increase
Underflow speed, causes oxidation ditch top flow velocity larger, and bottom velocity very little, cause a large amount of depositions of bottom of trench (sometimes deposition thickness >=
1.0m), reduce the dischargeable capacity of oxidation ditch, reduce treatment effect；(2) surface aeration machine is easily splash larger in the running
Spray or water mist, on the one hand corroded bearing bearing, submersible motor even electric control system, on the other hand again polluted oxygen
The aisle on Hua Gou both sides；(3) surface aeration heat losses are more, and cooling is very fast, reduces water treatment efficiency；(4) surface aeration energy
Consumption is big, and plug-flow power is small, the excessive agitation water surface, causes water temperature drop and the shortcomings of bubble disperses, foul smell disperses, especially in north
Side, water temperature in winter has seriously affected the removal of pollutant at 10 degree or so, and has a significant impact to environment, this is also oxidation ditch
The reason for northern area is rarely needed.
Cause pond deeply shallower when using surface aeration mode for oxidation ditch, and heat scatters and disappears more, is not suitable in the north
Using the shortcomings that, a kind of oxidation ditch process being combined using micro-pore aeration and diving propelling be developed and obtain extensively
Using.Microporous aerated oxidation ditch technique, is the mode for being combined deep water micro-pore aeration and underwater plug-flow, and aerator installation is deep
Degree can improve the low temperature tolerance ability of entire processing system up to more than 6m.But this mode is there is also some shortcomings, i.e., due to
For the flow pulling equipment that this technique is set using high-power impeller, therefore power consumption is higher during operation, operating cost is larger.
In addition, also a kind of jet aerator, this aerator is mounted on oxidation ditch top, at an angle to oxidation
It injects air stream inside ditch to be oxygenated and current is promoted to flow, this aeration mode is aerated for single-point, to the furrow width of oxidation ditch
It is required with ditch depth, and plug-flow effect is undesirable, therefore seldom applied in Practical Project.
Therefore, application of the oxidation ditch process in north cold area at present has the following problems：
(1) since surface aeration equipment pond is deeply limited, heat losses are more, therefore are difficult to promote in north cold area and answer
With；
(2) though microporous aerated oxidation ditch technique solves the problems, such as pond depth, electricity when the high-power flow pulling equipment used is run
Consumption is higher, adds operating cost.
The content of the invention
The present invention provides a kind of attached wall impeller for oxidation ditch process, and forming current using wall attachment effect drives effect
Should, it realizes the big flow velocity of small-power, has many advantages, such as that equipment is simple, plug-flow effect is good, the loss of flood peak is small.
Technical scheme is as follows：
A kind of attached wall impeller for oxidation ditch process, including host, submersible motor, bearing, blade, water inlet, lattice
Net, annulus diversion trench gather water outlet, and the submersible motor is set inside the host, tells bearing and the blade, described
Submersible motor connects the bearing, the bearing connects the blade, and the host sets the water inlet in face of water (flow) direction,
The water inlet connects the grid, and the host sets the annulus diversion trench, the annulus diversion trench back to water (flow) direction
Gather water outlet described in connection.
The attached wall impeller, wherein the host, for cylindrical stainless steel cylinder, body diameter 0.5m, cylinder
Length is 1m；
The attached wall impeller, preferred embodiment are that the submersible electrical power scope is 1.1-22kW；
The attached wall impeller, preferred embodiment be, the blade is two panels or three pieces, swept-back blade, blade rotation
Turn a diameter of 0.4m；
The attached wall impeller, preferred embodiment are a diameter of 0.4m of water inlet, and grid is set on water inlet,
Grid network interface size is 1cm；
The attached wall impeller, preferred embodiment are that the annulus diversion trench outer diameter is 0.5m, and annulus diversion trench is transversal
Face width is 7cm, and axis of small circle 2cm, fan-shaped radius is 2.5cm, and big radius of circle is 3cm.
The present invention workflow be：Waste water enters from water inlet in host, and water inlet sets grid, prevents that leaf etc. is solid
Body pollution object enters damaged blade in host, and the blade of submersible motor connection, the blade rotated are passed through into the water in host
It is flowed into after acceleration in annulus diversion trench, the current of annulus diversion trench are flowed out from tape speed in water outlet is gathered, and are determined according to Bernoulli Jacob
Rule, tape speed current can annulus diversion trench annulus circle centre position generate negative pressure, thus drive annulus center of circle rear, up and down around
Current flow together.
Beneficial effects of the present invention are：The present invention relates to a kind of attached wall impellers for oxidation ditch process, utilize attached wall
Effect promotes current flowing, adapts to different pond body depth, oxidation ditch process is enable to be promoted and applied in north cold area,
And the performance number of flow pulling equipment is greatly lowered, further reduces operating cost.
(1) plug-flow effect is good：The water velocity that attached wall impeller is formed can reach more than 0.3m/s, and velocity-stabilization
Uniformly；
(2) mixing velocity is fast；One times of water is flowed into, stream more than 10-15 times of water quantity holding 0.3m/s can be driven
Speed, and power consumption is low, is only 0.1-0.2W/m3；
(3) equipment is simple：Equipment composition is simple, convenient to install and maintain；
(4) loss of flood peak is small：Annulus diversion trench does not have blade setting, drives current flowing by current gas pressure, therefore
Loss of flood peak very little.
Description of the drawings
Fig. 1 is attached wall impeller feature cross-section schematic diagram；
Fig. 2 is attached wall impeller structure schematic longitudinal section；
Fig. 3 is attached wall impeller annulus diversion trench cross-sectional view.
Wherein, 1, host, 2, submersible motor, 3, bearing, 4, blade, 5, water inlet, 6, grid, 7, annulus diversion trench, 8,
Gather water outlet.
L, annulus diversion trench cross-sectional width, a, axis of small circle, b, fan-shaped radius, c, big radius of circle.
Specific embodiment
As shown in Figure 1, 2, 3, a kind of attached wall impeller for oxidation ditch process, including host 1, submersible motor 2, bearing
3rd, blade 4, water inlet 5, grid 6, annulus diversion trench 7, gather water outlet 8.1 inside of the host set the submersible motor 2,
The submersible motor 2 and the bearing 3 link together；Told bearing 3 and the blade 4 link together, 1 face of host
The water inlet 5 is set to water (flow) direction, the water inlet 5 and the grid 6 link together, and the host 1 is back to current
Direction sets the annulus diversion trench 7, and the annulus diversion trench 7, which connects, described gathers water outlet 8.
The host 1 of the impeller, for cylindrical stainless steel cylinder, body diameter 0.5m, barrel lenght 1m；Diving electricity
Machine 2, power bracket are 1.1-22kW；Blade 4 is two panels or three pieces, and swept-back blade, 4 rotating diameter of blade is 0.4m；Water inlet
Mouthful 5 a diameter of 0.4m set grid on water inlet 5, and 6 network interface size of grid is 1cm；7 outer diameter of annulus diversion trench be 0.5m, annulus
Diversion trench cross section L width is 7cm, and axis of small circle a is 2cm, and fan-shaped radius b is 2.5cm, and big radius of circle c is 3cm.
Claims (3)
1. a kind of attached wall impeller for oxidation ditch process, which is characterized in that including host, submersible motor, bearing, blade,
Water inlet, grid, gather water outlet at annulus diversion trench, and the submersible motor is set inside the host, tells bearing and described
Blade, the submersible motor connects the bearing, the bearing connects the blade, and the host sets institute in face of water (flow) direction
Water inlet is stated, the water inlet connects the grid, and the host sets the annulus diversion trench, the circle back to water (flow) direction
Gather water outlet described in the connection of ring diversion trench.
2. attached wall impeller according to claim 1, which is characterized in that the attached wall impeller, wherein the host,
For cylindrical stainless steel cylinder, body diameter 0.5m, barrel lenght 1m, the submersible electrical power scope for 1.1-
22kW, the blade are two panels or three pieces, swept-back blade, vane pivot diameter 0.4m, a diameter of 0.4m of water inlet,
Grid is set on water inlet, and grid network interface size is 1cm；
3. attached wall impeller according to claim 1, which is characterized in that the annulus diversion trench outer diameter be 0.5m, annulus
Diversion trench cross-sectional width is 7cm, and axis of small circle 2cm, fan-shaped radius is 2.5cm, and big radius of circle is 3cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093210.8A CN108083430B (en) | 2018-01-31 | 2018-01-31 | Wall-attached flow impeller for oxidation ditch process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810093210.8A CN108083430B (en) | 2018-01-31 | 2018-01-31 | Wall-attached flow impeller for oxidation ditch process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108083430A true CN108083430A (en) | 2018-05-29 |
| CN108083430B CN108083430B (en) | 2021-06-01 |
Family
ID=62193619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810093210.8A Active CN108083430B (en) | 2018-01-31 | 2018-01-31 | Wall-attached flow impeller for oxidation ditch process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108083430B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813950Y (en) * | 2005-08-16 | 2006-09-06 | 上海水利工程物资有限公司 | Blade type bidirectional submerged through-flow pump |
| CN103539272A (en) * | 2012-07-13 | 2014-01-29 | 常州市武进南夏墅苏南锻造有限公司 | Novel submersible water impeller blade wheel |
| KR101453730B1 (en) * | 2014-04-09 | 2014-10-22 | (주)에코원 | Water circulation apparatus for circulating lower water and upper water |
| CN205683860U (en) * | 2016-06-17 | 2016-11-16 | 南京隆诺环保科技有限公司 | A kind of impeller blade |
-
2018
- 2018-01-31 CN CN201810093210.8A patent/CN108083430B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2813950Y (en) * | 2005-08-16 | 2006-09-06 | 上海水利工程物资有限公司 | Blade type bidirectional submerged through-flow pump |
| CN103539272A (en) * | 2012-07-13 | 2014-01-29 | 常州市武进南夏墅苏南锻造有限公司 | Novel submersible water impeller blade wheel |
| KR101453730B1 (en) * | 2014-04-09 | 2014-10-22 | (주)에코원 | Water circulation apparatus for circulating lower water and upper water |
| CN205683860U (en) * | 2016-06-17 | 2016-11-16 | 南京隆诺环保科技有限公司 | A kind of impeller blade |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108083430B (en) | 2021-06-01 |
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