CN105129987A - Domestic sewage micro-power processing system based on microfiltration technology - Google Patents
Domestic sewage micro-power processing system based on microfiltration technology Download PDFInfo
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- CN105129987A CN105129987A CN201510562168.6A CN201510562168A CN105129987A CN 105129987 A CN105129987 A CN 105129987A CN 201510562168 A CN201510562168 A CN 201510562168A CN 105129987 A CN105129987 A CN 105129987A
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- 239000010865 sewage Substances 0.000 title claims abstract description 54
- 238000005516 engineering process Methods 0.000 title claims abstract description 21
- 238000001471 micro-filtration Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 238000011282 treatment Methods 0.000 claims description 19
- 230000000630 rising effect Effects 0.000 claims description 9
- 238000005273 aeration Methods 0.000 claims description 8
- 201000010099 disease Diseases 0.000 claims description 8
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000010992 reflux Methods 0.000 description 7
- 239000000243 solution Substances 0.000 description 6
- 238000003911 water pollution Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000013505 freshwater Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000003621 irrigation water Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000001815 facial effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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- 230000004060 metabolic process Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000000384 rearing effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000004162 soil erosion Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a domestic sewage micro-power processing system based on a microfiltration technology. The processing system comprises a water region, an anaerobic-anoxic and an aerobiotic region. A water input pipe is communicated with the water region through an installation groove. The anaerobic-anoxic region is arranged at one side of the water region. The aerobiotic region is arranged at one side of the anaerobic-anoxic region. A washing region is arranged at one side of the aerobiotic region. A mud region is arranged at the lower ends of the washing region and an inclined pipe settling region located at one side of the washing region. The upper end of the inclined pipe settling region is connected with a water output pipe. The usage cycle of the micro-power processing system is long, the cost is low, anaerobic, anoxic and aerobiotic characteristics are combined and the sewage processing efficiency and the sewage processing quality are raised greatly.
Description
Technical field
The present invention relates to a kind of sewage disposal device, particularly a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology.
Background technology
Sewage, be often referred to by certain that pollute, from life and the discharge water produced.According to the viewpoint of sewage source, sewage can be defined as from house, office, business or manufacturing district discharge and underground water.The liquid carrying refuse of the mixing such as surface water, snowstorm or water.According to sewage source, sewage can be divided into this four class.The first kind: trade effluent, from manufacturing mining and the sewage of industrial production activities, comprise the runoff Leachate site alive coming from industry or business storage, processing, and other is not the waste water of sanitary sewage.Equations of The Second Kind: sanitary sewage, from house, office building, office or similar sewage; Health sewage; Effluent sewerage, comprises the trade effluent mixed in sanitary sewage in sewerage.3rd class: business sewage, exceedes nontoxic, the harmless sewage of sanitary sewage from commercial facility and some composition, as sewage from catering business, using sewage of wash house, animal rearing sewage, and the sewage etc. that hairdressing place produces.4th class: overland flow, from water under rainwater, snow-broth, motorway, from the water etc. of city and industrial area, overland flow does not infilter soil, enters underground water along street and land.
Water resources is the most critical resource of human being's production life, but nowadays, ecotope is seriously damaged, and water pollution is serious, and the protection of water resources and the improvement of water pollutions become the problem that modern society pays close attention to most.China is the serious country of a drought and water shortage.Freshwater resources total amount is 28000 billion cubic meters, account for 6% of global water resources, be only second to Brazil, Russia and Canadian, occupy the 4th, the world, but only have 2200 cubic metres per capita, be only 1/4 of world average level, 1/5 of the U.S., be one of 13 countries that water resources is the poorest per capita in the whole world.After deducting the flood river rising in Ningxia and flowing into central Shaanxi stream being difficult to utilize and the groundwater resource being dispersed in remote districts, China's available Freshwater resources amount of reality is then less, about being only 11000 billion cubic meters, available water resource is about 900 cubic metres per capita, and its distributed pole is unbalanced.To 20 end of the centurys, in more than 600 city, the whole nation, there is insufficient water problem in existing more than 400 city, wherein more serious lack of water city reaches 110, and National urban lack of water total amount is 60 billion cubic meters.China's shortage of water resources, water pollutions are serious, severe water and soil erosion, water price seriously on the low side, water resource waste is serious.And southern water is many, northern water is few.Western water is few, many along seawater.According to monitoring, current national most urban groundwater by point-like to a certain extent and facial contamination, and has the trend increased the weight of year by year.The water pollutions be on the rise not only reduces the using function of water body, exacerbate the contradiction of shortage of water resources further, the strategy of sustainable development implemented China brings and has a strong impact on, but also the safe drinking water of serious threat to city resident and the health of the people.Along with urbanization and socio-economic development, soil is taken in a large number, and non-agricultural irrigation water demand is sharply increasing, agricultural with industry, rural area and city, produce and live, produce and ecology etc. all multiplex water contradiction aggravate further.Although China takes the strictest cultivated land protection measure, a large amount of farmlands and agricultural irrigation water source are taken by city and industry, and the impetus that cultivated land resource reduces is difficult to reverse, and the pressure of shortage of water resources increases further.
For at this shortage of water resources, when water pollutions is serious again, we need to process contaminated water, can again be utilized after making these contaminated water treatments.The sewage that particularly our family expenses produce every day all can be many, if many water resourcess have just been saved in re-using after these sewage can be processed, when carrying out water treatment to sewage, need to use sewage disposal device, sewage disposal device structure conventional in life is comparatively simple, wastewater treatment efficiency is not fine, and the sewage after processed is still very dirty.
Summary of the invention
The technical problem to be solved in the present invention overcomes existing defect, provides a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology, effectively can solve the problem in background technology.
In order to solve the problems of the technologies described above, the invention provides following technical scheme:
The invention provides a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology, comprise and resemble pool, anaerobic/anoxic district and aerobic zone, it is characterized in that, described water inlet pipe is communicated with the described pool that resembles by mounting groove, the described side, pool that resembles is provided with described anaerobic/anoxic district, and side, described anaerobic/anoxic district is provided with described aerobic zone, and side, described aerobic zone is provided with and rushes district, describedly rush district and be arranged at the lower end rushing inclined tube shallow lake district, side, district and be provided with mud district, upper end, district, described inclined tube shallow lake connects rising pipe.
As a preferred technical solution of the present invention, upper end, described anaerobic/anoxic district is provided with weir, top disease stream, and lower end, described anaerobic/anoxic district is provided with base apertures disease stream.
As a preferred technical solution of the present invention, be provided with aeration tube in described aerobic zone, described aeration tube stretches out one end, described aerobic zone and connects drum pendant machine.
As a preferred technical solution of the present invention, in described mud district, be provided with perforation collection mud floral tube.
As a preferred technical solution of the present invention, described rising pipe and described inclined tube shallow lake district coupling end are provided with straight tee.
As a preferred technical solution of the present invention, described water inlet pipe is provided with valve.
As a preferred technical solution of the present invention, vertically flow deflector is vertically installed with in described anaerobic/anoxic district, there is the fluidised form of upper and lower plug-flow, and in the horizontal direction, under the effect of artesian head, presenting the fluidised form of horizontal plug-flow, in single vertical cavity, is an independently complete hybrid fluidised form.
The beneficial effect that compared with prior art the present invention reaches is: this kind is based on the sanitary sewage microkinetic treatment system of micro-filtration Technology, life cycle is long, with low cost, by anaerobism, anoxic and aerobic combination, greatly improve the quality of sewage treating efficiency and sewage disposal.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.
In the accompanying drawings:
Fig. 1 is a kind of sanitary sewage microkinetic treatment system structural representation based on micro-filtration Technology of the present invention;
Fig. 2 is that hydraulic flow of the present invention is to structural representation;
Number in the figure: 1, resemble pool; 2, anaerobic/anoxic district; 3, aerobic zone; 4, water inlet pipe; 5, valve; 6, weir, top disease stream; 7, base apertures disease stream; 8, aeration tube; 9 drum pendant machines, 10, Ni Qu; 11, perforation collection mud floral tube; 12, inclined tube shallow lake district; 13, straight tee; 14, rising pipe; 15, district is rushed; 16, mounting groove.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.
Embodiment: as shown in Figure 1-2, the invention provides a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology, comprise and resemble pool 1, anaerobic/anoxic district 2 and aerobic zone 3, described water inlet pipe 4 by mounting groove 16 with resemble pool 1 and communicate, the described side, pool 1 that resembles is provided with anaerobic/anoxic district 2, side, described anaerobic/anoxic district 2 is provided with aerobic zone 3, side, described aerobic zone 3 is provided with and rushes district 15, described rush district 15 and be arranged at rush lower end, district 12, inclined tube shallow lake, side, district 15 and be provided with mud district 10, upper end, district 12, described inclined tube shallow lake connects rising pipe 14.
Upper end, described anaerobic/anoxic district 2 is provided with weir, top disease stream 6, lower end, described anaerobic/anoxic district 2 is provided with base apertures disease stream 7, aeration tube 8 is provided with in described aerobic zone 3, described aeration tube 8 stretches out one end, aerobic zone 3 and connects drum pendant machine 9, perforation collection mud floral tube 11 is provided with in described mud district 10, described rising pipe 14 is provided with straight tee 13 with district 12, inclined tube shallow lake coupling end, and described water inlet pipe 4 is provided with valve 5.In anaerobic/anoxic district 2, be vertically vertically installed with flow deflector (not shown), there is the fluidised form of upper and lower plug-flow, and in the horizontal direction, under the effect of artesian head, presenting the fluidised form of horizontal plug-flow, in single vertical cavity, is an independently complete hybrid fluidised form.
This kind is based on the sanitary sewage microkinetic treatment system of micro-filtration Technology, this technique is by anaerobism, anoxic and aerobic and precipitation mac function combination, general preposition pre-treatment is fine fack and Swirling flow sand-removing, the sewage entering biochemical reaction tank adopts run by gravity mode to flow through these regions, while degradable organic pollutant, realize denitrogenation dephosphorizing.Comprise multiple backflow in technical process, in conventional sanitary sewage disposal, its main return mode is as follows: in settling region sludge bucket, sludge reflux is to aerobic zone 3: sludge reflux, maintains MLSS concentration; In settling region sludge bucket, sludge reflux is to anaerobic/anoxic district 2: sludge reflux, maintains MLSS concentration; Anaerobic/anoxic district 2 is back to anaerobic zone: sludge reflux, maintains MLSS concentration, utilizes the denitrogenation of high-quality carbon source, releases phosphorus, reduces DO to the destruction of anaerobic zone; Sludge sump supernatant liquor is back to anaerobic/anoxic district 2: backflow increases basicity.
Drum pendant machine 9 and aeration tube 8 are mainly in aerobic zone 3, and in anaerobic zone and sludge sump, tracheae is stirred in each access one simultaneously, at the bottom of intermittent blowback pond, prevent pond, anaerobic zone prodelta clay mud and sludge sump anaerobically fermenting generation stink.
By arranging vertical vertical streaming pipeline in the middle of anaerobic/anoxic district 2, there is the fluidised form of upper and lower plug-flow, and in the horizontal direction, under the effect of artesian head, present the fluidised form of horizontal plug-flow, in single vertical cavity, it is an independently complete hybrid fluidised form, therefore, under the condition of long-time hydraulic detention time, reactor has very high volumetric loading, particularly with this understanding, the mud of domestication is particulate state, and be equivalent to a small-sized anaerobic reactor in anaerobic zone, bed body has very large biosolids interception capacity.On the other hand, the lattice of rising fluidised form eliminates the disadvantageous effect to anaerobic zone and anaerobic/anoxic district 2 ambient condition of nitrate in returnedactivatedsludge.The maximum feature of this technique is active sludge is particulate state.
Concrete, first sewage enter and resemble front end, pool 1, vertical baffling (this part refluxes mainly in order to keep certain flow velocity) is carried out together with the mixed solution refluxed in the middle part of anaerobic/anoxic district 2, therefore resemble with being partly dissolved oxygen in the water of front end, pool 1, through baffling, after sewage enters second and third lattice, dissolved oxygen concentration has decline, enter anaerobic state, phosphorus is fully discharged, and improves the dephosphorization ability of system.
This technique has unique sludge circulation route, an active sludge part in district 12, inclined tube shallow lake bucket is back to front end, anaerobic/anoxic district 2, this part mud is with dissolved oxygen, due to the feature of vertical current structure, water flow to second and third lattice of anaerobic/anoxic district 2, dissolved oxygen concentration declines rapidly, and denitrification is comparatively thorough in longer anoxic flow process, and the carbon source (BOD5) that can make full use of in sewage carries out denitrification.
In district 12, inclined tube shallow lake bucket except the active sludge of half is used for denitrification, second half activity sludge reflux is to aerobic zone 3, and the mixed solution of aerobic zone 3 enters mud district 10, then is back to anaerobic zone by mud district 10.This mode creates a kind of flowing of stationary state.In aerobic zone 2, substantially the complete hybrid reaction zone of underload is in, microorganism is in active lower state, endogenous respiration state is progressed into after entering sludge sump, sludge part is cleared up, the remaining microorganism being through Natural Selection, such microorganism enters the anaerobic zone of high loading again, activity is excited again, the activity of absorption and degradation of organic substances progressively strengthens, improve reaction efficiency and treatment effect, official describes mud can keep active for a long time, in the process of metabolism, realize sludge reduction.
This kind is based on the sanitary sewage microkinetic treatment system of micro-filtration Technology, and life cycle is long, with low cost, by anaerobism, anoxic and aerobic combination, greatly improves the quality of sewage treating efficiency and sewage disposal.
Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. the sanitary sewage microkinetic treatment system based on micro-filtration Technology, comprise and resemble pool (1), anaerobic/anoxic district (2) and aerobic zone (3), it is characterized in that, described water inlet pipe (4) is communicated with the described pool (1) that resembles by mounting groove (16), described pool (1) side that resembles is provided with described anaerobic/anoxic district (2), described anaerobic/anoxic district (2) side is provided with described aerobic zone (3), described aerobic zone (3) side is provided with and rushes district (15), described rush district (15) and be arranged at the lower end rushing inclined tube shallow lake district, district (15) side (12) be provided with mud district (10), district (12) upper end, described inclined tube shallow lake connects rising pipe (14).
2. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, it is characterized in that, described anaerobic/anoxic district (2) upper end is provided with weir, top disease stream (6), and described anaerobic/anoxic district (2) lower end is provided with base apertures disease stream (7).
3. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, it is characterized in that, be provided with aeration tube (8) in described aerobic zone (3), described aeration tube (8) stretches out described aerobic zone (3) one end and connects drum pendant machine (9).
4. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, is characterized in that, is provided with perforation collection mud floral tube (11) in described mud district (10).
5. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, is characterized in that, described rising pipe (14) and described inclined tube shallow lake district (12) coupling end are provided with straight tee (13).
6. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, it is characterized in that, described water inlet pipe (4) is provided with valve (5).
7. a kind of sanitary sewage microkinetic treatment system based on micro-filtration Technology according to claim 1, is characterized in that, be vertically vertically installed with flow deflector in described anaerobic/anoxic district (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510562168.6A CN105129987A (en) | 2015-09-07 | 2015-09-07 | Domestic sewage micro-power processing system based on microfiltration technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510562168.6A CN105129987A (en) | 2015-09-07 | 2015-09-07 | Domestic sewage micro-power processing system based on microfiltration technology |
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| CN105129987A true CN105129987A (en) | 2015-12-09 |
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| CN201510562168.6A Pending CN105129987A (en) | 2015-09-07 | 2015-09-07 | Domestic sewage micro-power processing system based on microfiltration technology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731720A (en) * | 2015-12-30 | 2016-07-06 | 无锡康霸环保设备有限公司 | Domestic sewage micro-power processing system based on microfiltration technology |
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|---|---|---|---|---|
| ES2249976A1 (en) * | 2004-03-29 | 2006-04-01 | Construcciones Especiales Y Dragados, S.A. | Waste water treatment without nitrogen, phosphorus and organic contamination reduction reagents employs a settler following anoxic, anaerobic, anoxic and oxic zones for recirculation of the biological sludge from the oxic and anoxic zones |
| CN101704618A (en) * | 2009-12-01 | 2010-05-12 | 北控水务(中国)投资有限公司 | Sewage treatment system |
| CN202658056U (en) * | 2012-07-13 | 2013-01-09 | 中国水电顾问集团中南勘测设计研究院 | Centralized sewage treatment device suitable for towns and townships |
| CN203112657U (en) * | 2012-12-28 | 2013-08-07 | 上海亚同环保实业股份有限公司 | Constant-effluent variable-load SVBR (Steady outflow Variable load Biological Reactor) sewage treater |
| CN103373794A (en) * | 2013-07-04 | 2013-10-30 | 王胜初 | Sewage treatment process and special-purpose one-piece sewage treatment plant |
| CN204958525U (en) * | 2015-09-07 | 2016-01-13 | 无锡康霸环保设备有限公司 | Domestic sewage oligodynamic treatment system based on micro -filtration technology |
-
2015
- 2015-09-07 CN CN201510562168.6A patent/CN105129987A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2249976A1 (en) * | 2004-03-29 | 2006-04-01 | Construcciones Especiales Y Dragados, S.A. | Waste water treatment without nitrogen, phosphorus and organic contamination reduction reagents employs a settler following anoxic, anaerobic, anoxic and oxic zones for recirculation of the biological sludge from the oxic and anoxic zones |
| CN101704618A (en) * | 2009-12-01 | 2010-05-12 | 北控水务(中国)投资有限公司 | Sewage treatment system |
| CN202658056U (en) * | 2012-07-13 | 2013-01-09 | 中国水电顾问集团中南勘测设计研究院 | Centralized sewage treatment device suitable for towns and townships |
| CN203112657U (en) * | 2012-12-28 | 2013-08-07 | 上海亚同环保实业股份有限公司 | Constant-effluent variable-load SVBR (Steady outflow Variable load Biological Reactor) sewage treater |
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| CN204958525U (en) * | 2015-09-07 | 2016-01-13 | 无锡康霸环保设备有限公司 | Domestic sewage oligodynamic treatment system based on micro -filtration technology |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731720A (en) * | 2015-12-30 | 2016-07-06 | 无锡康霸环保设备有限公司 | Domestic sewage micro-power processing system based on microfiltration technology |
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Application publication date: 20151209 |