CN108793394A - Oxygenate apparatus for sewage disposal - Google Patents
Oxygenate apparatus for sewage disposal Download PDFInfo
- Publication number
- CN108793394A CN108793394A CN201810943131.1A CN201810943131A CN108793394A CN 108793394 A CN108793394 A CN 108793394A CN 201810943131 A CN201810943131 A CN 201810943131A CN 108793394 A CN108793394 A CN 108793394A
- Authority
- CN
- China
- Prior art keywords
- ejector
- dissolving
- outlet
- pipe
- mentioned
- 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
-
- 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 discloses a kind of oxygenate apparatus for sewage disposal, including water pump, ejector, dissolving, above-mentioned water pump is connected by filling pipe with ejector water inlet end, above-mentioned ejector outlet end is connected with dissolving, above-mentioned dissolving lower end is equipped with outlet conduit, above-mentioned outlet conduit connects multiple gas-liquid mixed pipes, above-mentioned dissolving upper end is equipped with No.1 outlet pipe, No. two outlet pipes, above-mentioned No.1 outlet pipe connects multiple aerators, above-mentioned No. two outlet pipes are connected with the inflating port of gas-liquid mixed pipe, when it is expected to solve to be oxygenated sewage, the consumption of oxygen is big, less efficient problem.
Description
Technical field
The present invention relates to sewage disposals, and in particular to a kind of oxygenate apparatus for sewage disposal.
Background technology
In sewage disposal process, frequently by injection oxygen to sewage, disappeared with improving the bacterium inside activated sludge
Change and absorb dirty Organic substance in water to reduce pollutant component, prevent the growth of anaerobic bacteria, prevent sewage smelly, and pollutes environment and be
The enough oxygenation capacities of guarantee can all be equipped with oxygenate apparatus, and general oxygenate apparatus is directly injected into water by compressor
Aerator in, then be oxygenated by aerator, but this oxygenation mode, in order to ensure that oxygen is sufficiently mixed, oxygen wave
Take larger, oxygen-transfer efficiency is relatively low.
Invention content
The purpose of the present invention is to provide a kind of oxygenate apparatus for sewage disposal, it is expected to solve to fill sewage
When oxygen, the consumption of oxygen is big, less efficient problem.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of oxygenate apparatus for sewage disposal, including water pump, ejector, dissolving, above-mentioned water pump by filling pipe with
Ejector water inlet end is connected, and above-mentioned ejector outlet end is connected with dissolving, and above-mentioned dissolving lower end is equipped with outlet pipe
Road, above-mentioned outlet conduit connect multiple gas-liquid mixed pipes, and above-mentioned dissolving upper end is equipped with No.1 outlet pipe, No. two escape pipes
Road, above-mentioned No.1 outlet pipe connect multiple aerators, and above-mentioned No. two outlet pipes are connected with the inflating port of gas-liquid mixed pipe,
Its purpose of design is that liquid is transported to ejector through filling pipe by water pump and is mixed with air, enters back into dissolving and completes one
Secondary oxygenation makes liquid enter outlet conduit by the pressure of dissolving, and gas injects gas-liquid mixed by No. two outlet pipes
Pipe carries out two-pass aerating, and portion gas is output to aerator by No.1 outlet pipe in dissolving, realizes triple-oxygenation, makes oxygen
Gas makes full use of, and reduces the consumption of oxygen, improves the efficiency of sewage oxygenation.
Preferably, the outlet end of above-mentioned ejector is equipped with extension, above-mentioned extension stretches into dissolving lower end, above-mentioned to prolong
Stretching pipe lower end, there are gaps with dissolving bottom, it is intended that mixed gas liquid is injected by dissolving by extension,
Its liquid declines, and gas rises, and prevents liquid entry into No.1 outlet pipe or No. two outlet pipes.
Further technical solution is that above-mentioned extension is equipped with compressive sealed circle with dissolving coupling part, it is intended that
It is surprisingly revealed by the way that gas, liquid that compressive sealed circle effectively avoids ejector from injecting is arranged.
Preferably, above-mentioned ejector side is equipped with air compressor, the inlet end of above-mentioned air compressor and ejector
It is connected, it is intended that for being compressed air by air compressor, and be output in ejector and mixed with sewage.
Further technical solution is that above-mentioned ejector 2 includes nozzle 201, suction chamber 202, diffuser pipe 203, above-mentioned spray
Mouth 201 is in pyramid type, and 201 head end of said nozzle is connected to filling pipe 101, and 201 end of said nozzle is connected in suction chamber 202
Portion, 202 side of above-mentioned suction chamber be equipped with opening 204, above-mentioned opening 204 be ejector 2 inlet end, above-mentioned diffuser pipe 203 with
202 lower end of suction chamber is connected, and 203 internal diameter of above-mentioned diffuser pipe is from top to bottom gradually expanded, it is intended that passing through conical spray
Mouth improves hydraulic pressure, and gas-liquid mixed is carried out by suction chamber, reduces pressure by the diffuser pipe being gradually expanded, and then be convenient for gas liquid
Body enters dissolving.
Preferably, above-mentioned No. two outlet pipes are equipped with No. two valves, above-mentioned No.1 outlet pipe is equipped with No.1 valve
Door.
Preferably, above-mentioned outlet conduit is equipped with No. three valves.
Compared with prior art, the beneficial effects of the invention are as follows：
Ejector of the present invention injects oxygen to dissolving and sewage is once oxygenated, using the pressure of dissolving respectively to No.1
Outlet pipe, No. two outlet pipes continue to output oxygen, are mixed and are oxygenated using gas-liquid mixed pipe, are oxygenated again using aerator,
Reach occasion where making full use of liquid, the effect being repeatedly oxygenated reduces oxygen consumption, mentions efficiency.
The present invention makes gas-liquid mixture inject dissolving by ejector, and enter dissolving lower part, effectively by extension
Prevent liquid entry into No.1 outlet pipe or No. two outlet pipes.
The present invention avoids the gap of extension and dissolving coupling part that oxygen or sewage is caused to be anticipated by compressive sealed circle
Outward leakage.
The present invention is compressed to air by air compressor and power conveying, and the conveying of its oxygen is made to have a level pressure
Power improves oxygen input speed, promotes the gas-liquid mixed of ejector.
The present invention improves hydraulic pressure by conical nozzle, carries out gas-liquid mixed by suction chamber, passes through what is be gradually expanded
Diffuser pipe reduces pressure, and then enters dissolving convenient for gas liquid.
The present invention is equipped with No.1 valve by being equipped with No. two valves, above-mentioned No.1 outlet pipe on No. two outlet pipes
Door reaches convenient for according to different demands, carrying out pipeline control and flexibly uses purpose.
The present invention inputs sewage convenient for control dissolving by No. three valves to gas-liquid mixed pipe.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is Fig. 1 ejector structural schematic diagrams.
Reference sign：
1- water pumps, 2- ejectors, 3- dissolvings, 4- outlet conduits, 5- gas-liquid mixeds pipe, 6- No.1s outlet pipe, 7- bis- go out
Feed channel, 8- aerators, 9- extensions, 10- air compressors, 101- filling pipes, 201- nozzles, 202- suction chambers, 203-
Diffuser pipe, 204- openings, No. bis- No. tri- valves of 401-, 601- No.1s valve, 701- valves.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Refering to what is shown in Fig. 1, one embodiment of the present of invention is, a kind of oxygenate apparatus for sewage disposal, including water pump
1, ejector 2, dissolving 3, above-mentioned water pump 1 are connected by filling pipe 101 with 2 water inlet end of ejector, above-mentioned ejector 2
Outlet end is connected with dissolving 3, and 3 lower end of above-mentioned dissolving is equipped with outlet conduit 4, and above-mentioned outlet conduit 4 connects multiple gas-liquids
Mixing tube 5,3 upper end of above-mentioned dissolving are equipped with 6, No. two outlet pipes 7 of No.1 outlet pipe, and above-mentioned No.1 outlet pipe 6 connects
Multiple aerators 8, above-mentioned No. two outlet pipes 7 are connected with the inflating port of gas-liquid mixed pipe 5, and water pump 1 is existing goods, is led to
It crosses and water pump 1 is accessed into source of sewage, convenient for source of sewage to be pumped to the water inlet end of ejector 2, ejector by filling pipe 101
2 are made of resistance to oxidation, resistant material PVDF materials, and 2 concrete model of ejector is according to the water delivery bore phase of filling pipe 101
Adaptation selects 2 cun of water lines ejectors if the discharge of sewage is less than 30 ton hours, and ejector 2 is by nozzle 201, suction chamber
202, diffuser pipe 203, three parts composition, are corresponded to water inlet end, inlet end, outlet end, are made using jet flow negative pressure principle powerful respectively
Flow and air mixed injecting, reach and stir evenly, completely, the bubble of generation is more and fine and smooth, the high effect of dissolved oxygen efficiency,
Ejector 2 is mounted on 3 upper end of dissolving by welding, molten for injecting mixed liquor from ejector 2 to dissolving 3
Gas tank 3 is existing pressure air-dissolving tank, and mass transfer, dissolving are come into full contact with by what the pressure inside the tank of pressurized tank realized water and air
3 20-30 DEG C of water temperature, hydraulic pressure 0.35-0.4MPa, release quantity are about the 90%-99% of theoretical saturated dissolved gas amount, and dissolving 3 is examined
Consider the uniformity of water distribution, can suitably increase the height of filler, reach degree of saturation as possible, outlet conduit 4 is welded on molten gas
3 bottom of tank, outlet conduit 4 select pressure-resistant material to be made, and gas-liquid mixed pipe 5 is existing gas-liquid mixed pipe, concrete structure packet
Straight tube, mixing tube, airflow duct are included, above-mentioned straight tube is connected to mixing tube, and above-mentioned mixing tube is connected to outlet pipe, above-mentioned air
Diversion pipe is set to inside straight tube, and above-mentioned airflow duct is respectively communicated with air cavity and straight tube, and above-mentioned airflow duct
Outlet moves towards consistent with straight tube, and air enters from the air inlet of hoisting type aerator, and sewage enters from water inlet, in sky
It is sufficiently mixed in air cavity, mixed liquor is mixed in straight tube, and power fluid obtains higher flow velocity at the first airflow duct section
And negative pressuren zone, keep water (flow) direction consistent with the direction of air, water packet gas can fully improve the Reynolds number of pipeline in straight pipe, finally
Secondary transmission is carried out by mixing tube, aerator 8 is existing goods, and aerator 8 accesses No.1 and goes out by welding
Feed channel 6, secondly number outlet pipe 7 is mounted on 3 side wall of dissolving, No.1 outlet pipe 6 is mounted on 3 side wall top of dissolving
End, oxygen is continued to output by the pressure of dissolving 3 to 6, No. two outlet pipes 7 of No.1 outlet pipe respectively, mixed using gas-liquid
The mixing oxygenation of pipe 5 is closed, is oxygenated again using aerator 8, reaches occasion where making full use of liquid, the effect being repeatedly oxygenated
Fruit reduces oxygen consumption, mentions efficiency.
According to above-described embodiment, an alternative embodiment of the invention is, in order to avoid liquid enter No.1 outlet pipe 6 or
The outlet end of No. two outlet pipes 7, above-mentioned ejector 2 is equipped with extension 9, and above-mentioned extension 9 stretches into 3 lower end of dissolving, above-mentioned
There are gaps with 3 bottom of dissolving for 9 lower end of extension, mixed liquor are directly injected into 3 lower end of dissolving by extension 9, in turn
No.1 outlet pipe 6 or No. two outlet pipes 7 are prevented liquid entry into, gap avoids 3 bottom of dissolving and blocks extension 9.
Further, in order to avoid extension 9 and the gap of 3 coupling part of dissolving cause oxygen or sewage surprisingly to be let out
Dew, above-mentioned extension 9 are equipped with compressive sealed circle with 3 coupling part of dissolving, and by the way that compressive sealed circle is arranged, effectively filling exempts to prolong
The gap for stretching pipe 9 and 3 coupling part of dissolving, avoiding extension 9 and the gap of 3 coupling part of dissolving leads to oxygen or dirt
Water is surprisingly revealed.
According to above-described embodiment, an alternative embodiment of the invention is, above-mentioned in order to promote the gas-liquid mixed of ejector 2
2 side of ejector is equipped with air compressor 10, and above-mentioned air compressor 10 is connected with the inlet end of ejector 2, passes through air
Compressor 10 provides the power needed for oxygenation, and the speed and efficiency of oxygenation are ensure that by the oxygenation of air compressor 10, promotes
The gas-liquid mixed of ejector 2.
Further, above-mentioned to penetrate refering to what is shown in Fig. 2, entering dissolving 3 to ensure that the mixed liquor in ejector 2 is stablized
It includes nozzle 201, suction chamber 202, diffuser pipe 203 to flow device 2, and said nozzle 201 is in pyramid type, 201 head end of said nozzle and note
Waterpipe 101 is connected to, and 201 end of said nozzle is connected to 202 middle part of suction chamber, and 202 side of above-mentioned suction chamber is equipped with opening 204,
Above-mentioned opening 204 is the inlet end of ejector 2, and above-mentioned diffuser pipe 203 is connected with 202 lower end of suction chamber, above-mentioned diffuser pipe 203
Internal diameter is from top to bottom gradually expanded, and liquid is sent into nozzle 201 by water pump 1, and 201 head end of nozzle is gradually reduced to end, makes liquid
Body is rapidly injected suction chamber 202 by nozzle 201, and for gas by 204 injection suction chambers 202, suction chamber 202 is cylinder, leads to
Crossing suction chamber 202 makes gas, liquid contact, passes through diffuser pipe 203 by mixed mixing liquid, passes through the expansion being gradually expanded
Pressure 203 reduces pressure, and then enters dissolving 3 convenient for gas liquid.
According to above-described embodiment, an alternative embodiment of the invention is flexibly to use purpose to reach, above-mentioned No. two go out
Feed channel 7 is equipped with No. two valves 701, and above-mentioned No.1 outlet pipe 6 is equipped with No.1 valve 601, is convenient for according to different demands,
Pipeline control is carried out, reaches and flexibly uses purpose.
According to above-described embodiment, an alternative embodiment of the invention is, for the ease of controlling dissolving 3 to gas-liquid mixed pipe
5 input sewage, above-mentioned outlet conduit 4 are equipped with No. three valves 401, are convenient for control dissolving 3 to gas-liquid by No. three valves 401
Mixing tube 5 inputs sewage.
I.e. during the work time, liquid is transported to 2 water inlet end of ejector to device by liquid to be oxygenated by water pump 1,
Oxygen is transported to 2 inlet end of ejector by air compressor 10, by ejector 2 by sewage and air mixed injection dissolving 3,
First time aerobic process is completed, by the liquid of first time oxygenation in dissolving 3, is acted on through 3 pressure itself of dissolving, makes tank
It is interior realize water and air come into full contact with mass transfer, make in the molten people's water of air, reach degree of saturation as possible, be then turned on No. three valves
401, No. two valves 701, the gas in dissolving 3, which passes through No. two valves 701 and enters No. two outlet pipes 7, injects gas-liquid mixed pipes
5, the liquid in dissolving 3 enters outlet conduits 4 by No. three valves 401 and flows into gas-liquid mixed pipes 5, carries out secondary agitation and fills
Oxygen finally opens No.1 valve 601, and the residual compression air of dissolving 3 can be complete into aerator 8 by No.1 outlet pipe 6
It is oxygenated at last time, and then makes full use of the occasion where oxygenated liquids, flexibly installed, complete efficient oxygenation.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementations, these modifications and implementations will be fallen in this Shen
It please be within disclosed scope and spirit.More specifically, disclose in the application, drawings and claims in the range of, can
With the building block and/or a variety of variations and modifications of layout progress to theme combination layout.In addition to building block and/or layout
Outside the modification and improvement of progress, to those skilled in the art, other purposes also will be apparent.
Claims (7)
1. a kind of oxygenate apparatus for sewage disposal, including water pump（1）, ejector（2）, dissolving（3）, it is characterised in that：
The water pump（1）Pass through filling pipe（101）With ejector（2）Water inlet end is connected, the ejector（2）Outlet end with it is molten
Gas tank（3）It is connected, the dissolving（3）Lower end is equipped with outlet conduit（4）, the outlet conduit（4）It is mixed to connect multiple gas-liquids
Close pipe（5）, the dissolving（3）Upper end is equipped with No.1 outlet pipe（6）, No. two outlet pipes（7）, the No.1 outlet pipe
（6）Connect multiple aerators（8）, No. two outlet pipes（7）With gas-liquid mixed pipe（5）Inflating port be connected.
2. the oxygenate apparatus according to claim 1 for sewage disposal, it is characterised in that：The ejector（2）Go out
Mouth end is equipped with extension（9）, the extension（9）Stretch into dissolving（3）Lower end, the extension（9）Lower end and dissolving（3）
There are gaps for bottom.
3. the oxygenate apparatus according to claim 2 for sewage disposal, it is characterised in that：The extension（9）With it is molten
Gas tank（3）Coupling part is equipped with compressive sealed circle.
4. the oxygenate apparatus according to claim 1 for sewage disposal, it is characterised in that：The ejector（2）Side
Equipped with air compressor（10）, the air compressor（10）With ejector（2）Inlet end be connected.
5. the oxygenate apparatus according to claim 4 for sewage disposal, it is characterised in that：The ejector（2）Including
Nozzle（201）, suction chamber（202）, diffuser pipe（203）, the nozzle（201）In pyramid type, the nozzle（201）Head end and note
Waterpipe（101）Connection, the nozzle（201）End is connected to suction chamber（202）Middle part, the suction chamber（202）Side is equipped with
Opening（204）, the opening（204）For ejector（2）Inlet end, the diffuser pipe（203）With suction chamber（202）Lower end phase
Connection, the diffuser pipe（203）Internal diameter is from top to bottom gradually expanded.
6. the oxygenate apparatus according to claim 1 for sewage disposal, it is characterised in that：No. two outlet pipes
（7）It is equipped with No. two valves（701）, the No.1 outlet pipe（6）It is equipped with No.1 valve（601）.
7. the oxygenate apparatus according to claim 1 for sewage disposal, it is characterised in that：The outlet conduit（4）On
Equipped with No. three valves（401）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943131.1A CN108793394A (en) | 2018-08-17 | 2018-08-17 | Oxygenate apparatus for sewage disposal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810943131.1A CN108793394A (en) | 2018-08-17 | 2018-08-17 | Oxygenate apparatus for sewage disposal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108793394A true CN108793394A (en) | 2018-11-13 |
Family
ID=64080399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810943131.1A Pending CN108793394A (en) | 2018-08-17 | 2018-08-17 | Oxygenate apparatus for sewage disposal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108793394A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070079580A (en) * | 2006-02-02 | 2007-08-07 | 이재헌 | Pure oxygen aeration system for wastewater treatment |
| CN201020350Y (en) * | 2007-04-12 | 2008-02-13 | 大庆摩恩达工程有限公司 | Adjustable ejector |
| CN203319734U (en) * | 2013-06-08 | 2013-12-04 | 肖应东 | Nanometer floatation device |
| CN105329968A (en) * | 2015-11-27 | 2016-02-17 | 无锡工源机械有限公司 | Multi-stage dissolved air tank |
| CN205570119U (en) * | 2016-03-25 | 2016-09-14 | 诸暨天昊环保设备有限公司 | Dissolve gas mixing arrangement from inhaling formula |
| CN205727686U (en) * | 2016-06-15 | 2016-11-30 | 李秋芬 | The oxygen-increasing device of intensive cultivation |
| CN207046963U (en) * | 2017-07-20 | 2018-02-27 | 山东山大华特科技股份有限公司 | A kind of micro-nano bubble aeration device |
| CN207158927U (en) * | 2017-09-11 | 2018-03-30 | 重庆怡灏园林工程有限公司 | A kind of hoisting type aerator |
| CN207493516U (en) * | 2017-09-28 | 2018-06-15 | 福建省谷神农业发展有限公司 | A kind of high-efficiency high-concentration air-dissolving apparatus |
| CN208667234U (en) * | 2018-08-17 | 2019-03-29 | 重庆怡灏园林工程有限公司 | Oxygenate apparatus for sewage treatment |
-
2018
- 2018-08-17 CN CN201810943131.1A patent/CN108793394A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20070079580A (en) * | 2006-02-02 | 2007-08-07 | 이재헌 | Pure oxygen aeration system for wastewater treatment |
| CN201020350Y (en) * | 2007-04-12 | 2008-02-13 | 大庆摩恩达工程有限公司 | Adjustable ejector |
| CN203319734U (en) * | 2013-06-08 | 2013-12-04 | 肖应东 | Nanometer floatation device |
| CN105329968A (en) * | 2015-11-27 | 2016-02-17 | 无锡工源机械有限公司 | Multi-stage dissolved air tank |
| CN205570119U (en) * | 2016-03-25 | 2016-09-14 | 诸暨天昊环保设备有限公司 | Dissolve gas mixing arrangement from inhaling formula |
| CN205727686U (en) * | 2016-06-15 | 2016-11-30 | 李秋芬 | The oxygen-increasing device of intensive cultivation |
| CN207046963U (en) * | 2017-07-20 | 2018-02-27 | 山东山大华特科技股份有限公司 | A kind of micro-nano bubble aeration device |
| CN207158927U (en) * | 2017-09-11 | 2018-03-30 | 重庆怡灏园林工程有限公司 | A kind of hoisting type aerator |
| CN207493516U (en) * | 2017-09-28 | 2018-06-15 | 福建省谷神农业发展有限公司 | A kind of high-efficiency high-concentration air-dissolving apparatus |
| CN208667234U (en) * | 2018-08-17 | 2019-03-29 | 重庆怡灏园林工程有限公司 | Oxygenate apparatus for sewage treatment |
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Address after: 400 000 Chongqing Jiulongpo District Shipingqiao Metallurgical Four Villages 8 1-3-2 Applicant after: Yihao Environmental Technology Co., Ltd. Address before: 404100 Chongqing Jiulongpo District Huanghuoping New Market Station Yicube Chuanghaiyuan B208 Applicant before: Chongqing Yi Hao Landscape Engineering Co. Ltd. |