CN201164792Y - Hyperfiltration/microfiltration film sewage processor - Google Patents
Hyperfiltration/microfiltration film sewage processor Download PDFInfo
- Publication number
- CN201164792Y CN201164792Y CNU2008200113599U CN200820011359U CN201164792Y CN 201164792 Y CN201164792 Y CN 201164792Y CN U2008200113599 U CNU2008200113599 U CN U2008200113599U CN 200820011359 U CN200820011359 U CN 200820011359U CN 201164792 Y CN201164792 Y CN 201164792Y
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- water
- air bag
- surge tank
- ultrafiltration
- pump
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Abstract
The utility model relates to an ultrafiltration/microfiltration membrane waste disposal plant which comprises a raw water buffer tank, an inlet pump, a prefilter, a film subassembly, a back flushing water pump, a water produced pump, a water produced buffer tank, and a waste water discharge outlet which are connected through pipelines. The ultrafiltration/microfiltration membrane waste disposal plant is characterized in that the raw water buffer tank and the water produced buffer tank are communicated with a sealed elastic buffer air bag through a pipeline to form a closed system; the elastic buffer air bag is filled with inert gases and is communicated with an air bottle through a pipeline to be complemented. By adopting an inert gas sealing method, the device enables reduced ions in water not to take place chemical change when entering into the device, solves the newborn pollution problem produced when the general ultrafiltration/microfiltration membrane waste disposal plant treats reduced water; a rubber air bag is adopted to supply air, the pressure in the device can be automatically balanced, thereby being favorable to the smooth running of the device; at the same time, the running cost of the device is very low.
Description
Technical field
The utility model relates to water treatment facilities, relates in particular to a kind of ultrafiltration/micro-filtration membrane sewage-treatment plant.
Background technology
Ultrafiltration/micro-filtration membrane sewage disposal technology is a kind of newer water technology.Its principle is to utilize the selectivity sieving actoion of membrane material, the impurity in the water is held back and a kind of technology of allowing hydrone pass through.Because the screening precision of membrane technology is higher, this technology is used gradually on a large scale in recent years.In the application process, because being trapped thing can be attached in film surface or the fenestra, cause the pollution of film and cause the decline of the water flux of film, therefore the use of ultrafiltration/micro-filtration membrane need cooperate periodic flushing (washing away the film surface with feed water), backwash (with the product water of film from the back side of film the surface to film, back flush) operation such as, the water flux decay that comes controlling diaphragm is in certain scope.Generally adopt two groups of membrane modules to carry out handover operation at least, when one group of membrane module cleaned, another group membrane module produced water.Fluctuation can appear along with cleaning operation in the water inlet of system and aquifer yield, thus device generally be provided with former water surge tank and produce the water surge tank, be used for balanced flow fluctuation and keep the membrane module feed side pressure and produce the stable of water lateral pressure.In traditional ultrafiltration/micro-filtration membrane device, these two water pots are non-closed design, and water wherein directly contacts with air.Will bring a problem like this: if contain the reproducibility ion in the raw water, as ferrous ion, the oxygen that runs into air can be oxidized to ferric iron, produces precipitation in water, thereby has aggravated the pollution of film, causes the aquifer yield of film to have decline.For example, in some oil field, oil-polluted water can be by after ultrafiltration/micro-filtration membrane technical finesse, remove oil component wherein after, re-injection is underground again is used for the displacement of reservoir oil.But the content of iron ion runs into air up to 15mg/L in some sewage, will soon generate the reddish-brown precipitation thing, stops up fenestra, aggravates the pollution of film, makes the very difficult aquifer yield of recovering film of cleaning operation of conventional film, finally can cause the device operation to be failed.If can adopt certain inert gas (as nitrogen), with the raw material surge tank with to produce the water surge tank airtight, make water ingress of air not wherein, then the ferrous ion in the water is not oxidized, can pass through film smoothly, just can effectively address this problem.But, if simple employing is airtight with former water surge tank and product water surge tank, because in the operating process, a jar interior interior liquid level constantly changes, and can cause the fluctuation thereupon of jar internal pressure, is unfavorable for very much the operation of device.
Summary of the invention
In view of existing in prior technology the problems referred to above, produce new pollution problems in order to overcome conventional ultrafiltration/micro-filtration membrane technical finesse reproducibility sewage, the utility model provides a kind of airtight ultrafiltration of inert gas/micro-filtration membrane device that adopts, with effective solution because the new pollution that brings of ingress of air.
The technical solution of the utility model is achieved in that
A kind of ultrafiltration/micro-filtration membrane sewage-treatment plant, comprise former water surge tank, intake pump, prefilter, membrane module, backwash water pump, produce water pump, produce water surge tank, Sewage outlet, said system connects by pipeline, it is characterized in that: described former water surge tank and product water surge tank are connected with the elastic buffer air bag of sealing by pipeline, form closed system; Adorn inert gas in the described elastic buffer air bag, and replenish by the pipeline connection gas cylinder.
Described elastic buffer air bag can be a rubber pneumatic bag.
Adopt the former water surge tank of closed and produce the water surge tank; Provide air seal with the rubber pneumatic bag that is full of inert gas to these two surge tanks.Air bag can be according to level fluctuation situation in the jar, the inert gas of " handling up " in jar automatically.When the liquid level in the jar rose, gas pressure increased in jar, forced jar interior gas to flow into rubber pneumatic bag, stored.When liquid level in the jar descended, jar internal pressure reduced, air bag can be in the trend jar make-up gas, the pressure in the automatic-balancing system.Because whole system is airtight good, gas just air bag and jar in reciprocation cycle mobile, so the amount of inert gas that system consumed mainly comes from the leakage of system, can connect gas cylinder by pipeline and replenish.Because whole device airtight is easy to realize, so quantity of gas leakage is very little, the inert gas that is consumed thereby seldom makes the running cost of this air-tight manner very low.
Compared with prior art, the beneficial effects of the utility model are conspicuous: the former water surge tank of this device and the whole inert gas seals of product water surge tank, when making the reproducibility ion access to plant in the water chemical change not taking place, has solved the newborn pollution problem of conventional ultrafiltration/micro-filtration membrane device processing reproducibility water generates; Adopt the rubber pneumatic bag tonifying Qi, the pressure in can automatic balancing arrangement helps the even running of device.The operating cost of this device is very low simultaneously.
Description of drawings
2 in the utility model accompanying drawing, wherein,
Fig. 1 is existing conventional ultrafiltration/microfiltration membrane process flow chart;
Fig. 2 is the utility model ultrafiltration/microfiltration membrane process flow chart.Among the figure,
1, former water surge tank
2, intake pump
3, prefilter
4, membrane module
5, backwash water pump
6, produce water pump
7, produce the water surge tank
8, Sewage outlet
9, gas cylinder
10, rubber pneumatic bag.
The specific embodiment
Now in conjunction with the accompanying drawings, the utility model is described in further detail:
The technological process of existing conventional ultrafiltration/micro-filtration membrane device as shown in Figure 1, comprises former water surge tank 1, intake pump 2, prefilter 3, membrane module 4, backwash water pump 5, produces water pump 6, produces water surge tank 7 and Sewage outlet 8.In the operating process,, need carry out the flushing and the backwash operation of preiodic type to membrane module for the water flux of keeping film is stable.During flushing, close the product water of membrane module, wash away the film surface with former water.During backwash, utilize and produce the dorsal part of water from film, augmented flow back flush film.Cleaning the sewage that produces is discharged by Sewage outlet 8.Such operation can cause the liquid level of former water surge tank 1 and product water surge tank 7 constantly to fluctuate.In addition, because the control of the liquid level of these two water pots generally adopts the position formula to regulate, also can cause liquid level fluctuation in certain interval.For keeping the stable of jar internal pressure, these two jars are all made opening, promptly communicate with atmosphere.In existing this process, water directly contacts with air, might cause some material and air generation chemical reaction in the water, produces new pollutant.
Ultrafiltration provided by the utility model/micro-filtration membrane sewage-treatment plant has adopted the inert gas closed system as shown in Figure 2, and former water surge tank 1 and product water surge tank 7 are designed to closed, is communicated with rubber pneumatic bag 10 by pipeline.The used inert gas of system as nitrogen, is supplied with by the gas cylinder that is connected in rubber pneumatic bag.During the device operation, the liquid level of former water surge tank and product water surge tank can fluctuate along with the operating process of device.For example, when the device backwash,, in membrane module, inject the product water of membrane module by backwash water pump 5.Because moment, the water yield was bigger, the liquid level decline of producing water surge tank 7 is very fast, and jar internal pressure is descended, and is lower than the pressure of gas in the air bag 10.At this moment air bag 10 will tonifying Qi in trend jar 7, keeps the pressure balance in jars 7.When normal product water, the liquid level of producing water pot 7 constantly rises, and when reaching the liquid level upper control limit, produces water pump 6 and starts automatically, outwards supply product water.At this moment, the rising of liquid level can cause jar 7 internal pressures to raise, and is higher than the pressure in the air bag 10.At this moment, jar 7 interior inert gases will return in the air bag 10, keep the pressure stability in the jar 7.Equally, for former water surge tank 1, air bag 10 also can replenish or reclaim inert gas automatically, to keep a jar interior pressure balance.Owing to adopted rubber pneumatic bag, the air bag person's character has bigger elasticity.When the outside air feed of air bag 10, volume-diminished; When gas flowed back in the jar, air bag can swell automatically.Like this, on the one hand can keep intrasystem constant pressure, on the other hand, because inert gas is at air bag 10 and former water surge tank 1 or produce in water surge tank 7 spaces repeatedly the outflow that flows to, except system leak, not loss basically.In theory, the gas consumption of device just is used for the leakage of replenishment system, therefore, after air bag 10 is full of, uses gas cylinder 9 just can satisfy requirement to the equipment air feed.For example, the device for 500 tons in daily output water adopts 5 cubic metres air bag, only needs weekly to replenish 2 cubic metres nitrogen, and cost is very cheap.
The above; it only is the preferable specific embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and inventive concept thereof, all should be encompassed within the protection domain of the present utility model.
Claims (1)
1, a kind of ultrafiltration/micro-filtration membrane sewage-treatment plant, comprise former water surge tank, intake pump, prefilter, membrane module, backwash water pump, produce water pump, produce water surge tank, Sewage outlet, said system connects by pipeline, it is characterized in that: described former water surge tank and product water surge tank are connected with the elastic buffer air bag of sealing by pipeline, form closed system; Adorn inert gas in the described elastic buffer air bag, and replenish by the pipeline connection gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200113599U CN201164792Y (en) | 2008-02-28 | 2008-02-28 | Hyperfiltration/microfiltration film sewage processor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200113599U CN201164792Y (en) | 2008-02-28 | 2008-02-28 | Hyperfiltration/microfiltration film sewage processor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201164792Y true CN201164792Y (en) | 2008-12-17 |
Family
ID=40190175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200113599U Expired - Fee Related CN201164792Y (en) | 2008-02-28 | 2008-02-28 | Hyperfiltration/microfiltration film sewage processor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201164792Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107207289A (en) * | 2015-02-09 | 2017-09-26 | 住友电气工业株式会社 | Water treatment system and method for treating water |
| CN110776162A (en) * | 2019-12-12 | 2020-02-11 | 石家庄良村热电有限公司 | Energy-saving flue gas condensate water recovery processing system |
-
2008
- 2008-02-28 CN CNU2008200113599U patent/CN201164792Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107207289A (en) * | 2015-02-09 | 2017-09-26 | 住友电气工业株式会社 | Water treatment system and method for treating water |
| CN107207289B (en) * | 2015-02-09 | 2020-09-01 | 住友电气工业株式会社 | Water treatment system and water treatment method |
| CN110776162A (en) * | 2019-12-12 | 2020-02-11 | 石家庄良村热电有限公司 | Energy-saving flue gas condensate water recovery processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20170228 |