CN207210176U - Sodium nitrate waste water recycling device system - Google Patents
Sodium nitrate waste water recycling device system Download PDFInfo
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- CN207210176U CN207210176U CN201720949217.6U CN201720949217U CN207210176U CN 207210176 U CN207210176 U CN 207210176U CN 201720949217 U CN201720949217 U CN 201720949217U CN 207210176 U CN207210176 U CN 207210176U
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- filtration system
- sodium nitrate
- membrane
- waste water
- recycling device
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Abstract
The utility model discloses a kind of sodium nitrate waste water recycling device system.The sodium nitrate waste water recycling device system includes pretreatment system, also include the multistage membrane filtration system being connected with pretreatment system, the multistage membrane filtration system includes one-level film thickening filtration system, the production water purification filter system connected with one-level film thickening filtration system purified liquor outlet, the secondary membrane thickening filtration system being sequentially connected with the outlet of one-level film thickening filtration system dope, sodium salt purification filtration system, and the dope outlet of the secondary membrane thickening filtration system is connected with evaporation and crystallization system.The utility model carries out multisection type thickening filtration by multisection type processing system to sodium nitrate waste water, and the intractability and processing energy consumption, the sodium nitrate product purity of output for thus reducing sodium nitrate waste water greatly improve, and sodium nitrate resource obtains high efficiente callback utilization.
Description
Technical field
Sodium nitrate technical field of wastewater recovery is the utility model is related to, in particular to a kind of sodium nitrate Sewage treatment
Processing system.
Background technology
The trend risen year by year is presented in Ji Nian China sodium nitrate market demand, and sodium nitrate market demand increases same
When, whether the treatment scale and processing requirement of the output of sodium nitrate or the sodium nitrate waste water in production process all increasingly increase
Add.Meanwhile in many chemical processes using nitric acid, substantial amounts of nitric acid sodium salt can be also produced, it is general all that this comes from waste nitric acid
It is to be handled by way of neutralization.Generally also contain many heavy metal ion in sodium nitrate crude salt, if sodium nitrate is thick
The direct emission treatment of salt, not only results in the wasting of resources, also pollutes the environment.Nitrate is one of world's narrow resources, it is necessary to
Economize on resources, recycle to greatest extent.
In China, industrial sodium nitrate has a strict product standard (GB/T 4553-2002), but existing sodium nitrate at present
Recovery processing technique mainly uses atmospheric evaporation and multiple-effect evaporation, and they are except engineering consumption height, equipment operation expense being present
Outside the problem of high, the shortcomings of being difficult to control sodium nitrate purity and purity not to reach qualified products standard also be present, it is difficult to full
Production enough now, the market demand.Therefore need that one kind can reach qualified products standard, cost is low for recycling, energy badly at present
Consume low sodium nitrate waste water recycling device system.
Utility model content
Main purpose of the present utility model is to provide sodium nitrate waste water recycling device system, to solve to produce in the prior art
The problem of product quality is low, recycling cost is high, high energy consumption.
To achieve these goals, the utility model provides a kind of sodium nitrate waste water recycling device system.The sodium nitrate
Waste water recycling device system includes pretreatment system, in addition to the multistage membrane filtration system being connected with pretreatment system, described more
The production Water warfare that level membrane filtration system includes one-level film thickening filtration system, connected with one-level film thickening filtration system purified liquor outlet
Filtration system, the secondary membrane thickening filtration system being sequentially connected with the outlet of one-level film thickening filtration system dope, sodium salt are purified
Filter system, the dope outlet of the secondary membrane thickening filtration system are connected with evaporation and crystallization system.Thus sodium nitrate waste water can be
The larger impurity of particle is tentatively filtered out with first under processing system, afterwards the one-level film thickening filtration in multistage membrane filtration system
System is concentrated, and thus the production water for concentrating output is further filtered into production water filtering system to production water, concentrate output
Dope enter in secondary membrane thickening filtration system and carry out further thickening filtration, secondary membrane thickening filtration system output it is dense
Water is entered in sodium salt purification filtration system and purified, high dense of dope mouth output sodium salt purity of sodium salt purification filtration system
Liquid.The utility model carries out multisection type thickening filtration by multisection type processing system to sodium nitrate waste water, thus reduces nitric acid
The intractability and processing energy consumption, the sodium nitrate product purity of output of sodium waste water are greatly improved, and sodium nitrate resource is efficiently returned
Receive and utilize.
Further, the dope outlet of the production water purification filter system and the inlet of one-level film thickening filtration system connect
It is logical.So that dope can carry out filtering and concentrating again, the cleanliness factor of production water is further increased.
Further, the one-level film thickening filtration system is the first reverse osmosis membrane filtration system, the secondary membrane concentration
Filtration system includes at least the second reverse osmosis membrane filtration of one-level system, and the production water purification filter system includes at least one-level the 3rd
Reverse osmosis membrane filtration system, the sodium salt purification filtration system is nanofiltration membrane system.Thus, it is possible to preferably realize multistage
The thickening filtration system of membrane filtration system, realize concentration purification and purification to sodium nitrate waste water.
Further, the first reverse osmosis membrane filtration system, the second reverse osmosis membrane filtration system, the 3rd reverse osmosis membrane mistake
Filter system is disc tube reverse osmosis (dt-ro) membrane filtration system.Disc tube reverse osmosis (dt-ro) membrane filtration system is compared to other reverse osmosis membrane filtrations
System can preferably handle the waste water of this high salt content of sodium nitrate waste water, and film blocking is not susceptible in processing procedure, dense
Production cleanliness factor after contracting is higher.
Further, the nanofiltration membrane system is to retain 0.001 μm of agent particle size ＞, retain molecular weight of material to be
150-800, rejection ＞ 90% membrane filtration system.Liquid can be better achieved in nanofiltration membrane system on this condition
Further filtering purification.
Further, ultrafiltration membrance filter system is provided between the pretreatment system and one-level film thickening filtration system.It is super
Filter membrane filtering system can first filter before sodium nitrate waste water carries out filtering and concentrating to sodium nitrate waste water, after thus mitigating
Continue the filtering burden of each stage membrane filtration system.
Further, the ultrafiltration membrance filter system, one-level film thickening filtration system, secondary membrane thickening filtration system, production
Water purification filter system, the filter membrane of sodium salt purification filtration system are using intermetallic compound filter membrane, ceramic filter membrane, height
One kind in Molecularly Imprinted Polymer filter membrane.Thus, it is possible to realize that filtering and concentrating operates well, strainability is more stable.
Further, the pretreatment system includes Primary filter system, can realize to larger particles on this condition
The filtering of material.
Further, the pretreatment system also includes PH adjusting meanss, heat sink.Thereby guarantee that sodium nitrate waste water
Stability is filtered, ensures follow-up production water cleanliness factor and sodium nitrate product quality.
It can be seen that the utility model carries out multisection type thickening filtration by multisection type processing system to sodium nitrate waste water, thus
The intractability and processing energy consumption, the sodium nitrate product purity of output for reducing sodium nitrate waste water greatly improve, sodium nitrate resource
Obtain high efficiente callback utilization..The utility model suitable for sodium nitrate production process caused sodium nitrate waste water and it is other permitted
The processing and recovery of caused a large amount of sodium nitrate waste water in more chemical processes using nitric acid.
The utility model is described further with reference to the accompanying drawings and detailed description.What the utility model added
Aspect and advantage will be set forth in part in the description, and partly will become apparent from the description below, or pass through the present invention
Practice recognize.
Brief description of the drawings
Form a part of accompanying drawing of the present utility model to be used for aiding in the understanding of the present invention, the content provided in accompanying drawing
And its relevant explanation can be used for explaining the utility model in the utility model, but do not form to improper limit of the present utility model
It is fixed.In the accompanying drawings：
Fig. 1 is a kind of schematic diagram of sodium nitrate waste water recycling device system of the utility model.
Relevant mark in above-mentioned accompanying drawing for：
1：Pretreatment system；
11：Primary filter system；
12：PH adjusting meanss；
13：Heat sink；
2：Ultrafiltration membrance filter system；
3：First reverse osmosis membrane filtration system；
4：3rd reverse osmosis membrane filtration system；
5：Second reverse osmosis membrane filtration system；
6：Nanofiltration membrane system；
7：Evaporation and crystallization system.
Embodiment
Clear, complete explanation is carried out to the utility model below in conjunction with the accompanying drawings.Those of ordinary skill in the art based on
The utility model can be realized in the case of these explanations.It is before being illustrated with reference to accompanying drawing to the utility model, it is necessary to special
It is not pointed out that：
Technical scheme and technical characteristic in the utility model provided in each several part including the description below,
In the case of not conflicting, these technical schemes and technical characteristic can be mutually combined.
In addition, the embodiment of the present utility model being related in the description below is generally only the reality of the branch of the utility model one
Apply example, rather than whole embodiments.Therefore, do not had based on the embodiment in the utility model, those of ordinary skill in the art
There is the every other embodiment obtained on the premise of making creative work, should all belong to the model of the utility model protection
Enclose.
On term in the utility model and unit.In description and claims of this specification and relevant part
Term " comprising ", " having " and their any deformation, it is intended that cover non-exclusive include.
The utility model sodium nitrate waste water recycling device system, including pretreatment system 1, in addition to pretreatment system 1
Connected multistage membrane filtration system, the multistage membrane filtration system include one-level film thickening filtration system, concentrated with one-level film
The production water purification filter system of filter system purified liquor outlet connection, two be sequentially connected with the outlet of one-level film thickening filtration system dope
Level film thickening filtration system, sodium salt purification filtration system, the dope outlet of the secondary membrane thickening filtration system are connected with evaporation knot
Crystallographic system system 7.
The dope outlet of the production water purification filter system connects with the inlet of one-level film thickening filtration system.
The one-level film thickening filtration system is the first reverse osmosis membrane filtration system 3, the secondary membrane thickening filtration system
Including at least the second reverse osmosis membrane filtration of one-level system 5, the production water purification filter system includes at least counter-infiltration of one-level the 3rd
Membrane filtration system 4, the sodium salt purification filtration system is nanofiltration membrane system 6.
The first reverse osmosis membrane filtration system 3, the second reverse osmosis membrane filtration system 5, the 3rd reverse osmosis membrane filtration system 4
It is disc tube reverse osmosis (dt-ro) membrane filtration system.
The nanofiltration membrane system 6 is 0.001 μm of retention agent particle size ＞, retention molecular weight of material is 150-800, cut
Stay rate ＞ 90% membrane filtration system.The further filtering of liquid can be better achieved in nanofiltration membrane system on this condition
Purification.
Ultrafiltration membrance filter system 2 is provided between the pretreatment system 1 and one-level film thickening filtration system.
The ultrafiltration membrance filter system 2, one-level film thickening filtration system, secondary membrane thickening filtration system, production Water warfare mistake
Filter system, the filter membrane of sodium salt purification filtration system are using intermetallic compound filter membrane, ceramic filter membrane, high molecular polymerization
One kind in thing filter membrane.
The pretreatment system 1 includes Primary filter system 11.
The pretreatment system 1 also includes PH adjusting meanss 12, heat sink 13.
As shown in figure 1, sodium nitrate waste water recycling device system includes pretreatment system 1 in present embodiment, pre- place
Reason system 1 includes Primary filter system 11, PH adjusting meanss 12, heat sink 13, and the Primary filter system 11 is connected with ultrafiltration
Membrane filtration system 2, the filtrate (liquid of the ultrafiltration membrance filter system 2 are connected with the first reverse osmosis membrane filtration system 3, and described first is anti-
The dope outlet of osmosis membrane filters system 3 is connected with the second reverse osmosis membrane filtration system 5, the second reverse osmosis membrane filtration system 5
Dope outlet be connected with nanofiltration membrane system 6, the dope outlet of the nanofiltration membrane system 6 is connected with evaporation and crystallization system 7,
The purified liquor outlet of the first reverse osmosis membrane filtration system 3 is connected with the 3rd reverse osmosis membrane filtration system 4.
Preferably, the filtering accuracy of the Primary filter system 11 is plate and frame filter；The ultrafiltration membrance filter
System 2 is that can separate molecular weight ＞ 500, the filtration system of particle diameter ＞ 10nm materials；；The disc tube reverse osmosis (dt-ro) membrane filtration
Device to COD interception rates more than 95%, to conductance interception rate>97%, to various salinity interception rates>98%；The NF membrane mistake
Filter system 6 is 0.001 μm of retention agent particle size ＞, retention molecular weight of material is 150-800, rejection ＞ 90% membrane filtration system
System.The further filtering purification of liquid can be better achieved in nanofiltration membrane system on this condition.
Wherein ultrafiltration membrance filter system 2, the first reverse osmosis membrane filtration system 3, the second reverse osmosis membrane filtration system 5, the 3rd
Reverse osmosis membrane filtration system 4, nanofiltration membrane system 6 is using intermetallic compound filter membrane, ceramic filter membrane, polyphosphazene polymer
One kind in compound filter membrane.
Sodium nitrate waste water is first into pretreatment system 1, and particle diameter is filtered out in the presence of Primary filter system 11
Larger impurity particle, in the presence of PH adjusting meanss 12 by the PH modulation of the sodium nitrate waste water in Primary filter system 11 most
Good scope, the sodium nitrate waste water in Primary filter system 11 is rationally cooled in the presence of heat sink 13.Sodium nitrate afterwards
Waste water forms primary filtrate after the filtering of Primary filter system 11, ultrafiltration membrance filter system 2 is flowed into after primary filtrate, super
Further filtered in filter membrane filtering system 2, filter out the less impurity particle of particle diameter, flowed out from ultrafiltration membrance filter system 2
Filtrate enter the first reverse osmosis membrane filtration system 3, the production water exported afterwards is concentrated in the first reverse osmosis membrane filtration system 3
Enter in the 3rd reverse osmosis membrane filtration system 4 and further filtered, afterwards from the clear liquid of the 3rd reverse osmosis membrane filtration system 4
Mouth output pure water, the first reverse osmosis membrane filtration system 3 is back to from the dope mouth output dope of the 3rd reverse osmosis membrane filtration system 4
Inlet, the dope being concentrated to give in the first reverse osmosis membrane filtration system 2 further inputs into the second reverse osmosis membrane filtration
Further concentrated in system 5, further concentration gained dope enters nanofiltration membrane to the second reverse osmosis membrane filtration system 5
System 6, pure water is obtained under the filtering of nanofiltration membrane system 6, entered from the dope of the dope mouth of nanofiltration membrane system 6 output
To evaporation and crystallization system 7, dope is concentrated by evaporation in evaporation and crystallization system 7 and obtains nitric acid sodium crystal.
Sodium nitrate waste water recycling device system in present embodiment uses a kind of multisection type group technology, by nitric acid
Sodium waste water stoste carries out concentrate and purification process, significantly reduces the treating capacity of evaporative crystallization technique in the prior art, reduces
Energy consumption, environmental benefit is obvious, and each film processing system in simultaneity factor has the characteristics of easily controllable, simple to operate；Using
Membranous system processing, production water section can be recycled, it might even be possible to reach the standard of pure water, produce direct economic benefit,
It efficiently avoid the waste of the great lot of water resources in evaporation process；At combination using " nanofiltration after ultrafiltration+concentration before concentration "
Science and engineering skill, product quality can be control effectively, reach higher purity, even high-class product standard, sodium nitrate resource
Obtain high efficiente callback utilization.
Relevant content of the present utility model is illustrated above.Those of ordinary skill in the art are based on these explanations
In the case of can realize the utility model.Based on the above of the present utility model, those of ordinary skill in the art are not having
There is the every other embodiment obtained on the premise of making creative work, should all belong to the model of the utility model protection
Enclose.
Claims (9)
1. sodium nitrate waste water recycling device system, including pretreatment system (1), it is characterised in that also include and pretreatment system
(1) connected multistage membrane filtration system, the multistage membrane filtration system include one-level film thickening filtration system, concentrated with one-level film
What the production water purification filter system of filtration system purified liquor outlet connection and the outlet of one-level film thickening filtration system dope were sequentially connected
Secondary membrane thickening filtration system, sodium salt purification filtration system, the dope outlet of the secondary membrane thickening filtration system are connected with evaporation
Crystal system (7).
2. sodium nitrate waste water recycling device system as claimed in claim 1, it is characterised in that the production water purification filter system
Dope outlet connected with the inlet of one-level film thickening filtration system.
3. sodium nitrate waste water recycling device system as claimed in claim 1, it is characterised in that the one-level film thickening filtration system
Unite includes at least the second reverse osmosis membrane of one-level mistake for the first reverse osmosis membrane filtration system (3), the secondary membrane thickening filtration system
Filter system (5), the production water purification filter system carry including at least reverse osmosis membrane filtration system (4) of one-level the 3rd, the sodium salt
Pure filtration system is nanofiltration membrane system (6).
4. sodium nitrate waste water recycling device system as claimed in claim 3, it is characterised in that first reverse osmosis membrane filtration
System (3), the second reverse osmosis membrane filtration system (5), the 3rd reverse osmosis membrane filtration system (4) are disc tube reverse osmosis (dt-ro) membrane filtration
System.
5. sodium nitrate waste water recycling device system as claimed in claim 3, it is characterised in that the nanofiltration membrane system
(6) be 0.001 μm of retention agent particle size ＞, retention molecular weight of material is 150-800, rejection ＞ 90% membrane filtration system.
6. sodium nitrate waste water recycling device system as claimed in claim 1, it is characterised in that the pretreatment system (1) with
Ultrafiltration membrance filter system (2) is provided between one-level film thickening filtration system.
7. sodium nitrate waste water recycling device system as claimed in claim 6, it is characterised in that the ultrafiltration membrance filter system
(2), one-level film thickening filtration system, secondary membrane thickening filtration system, production water purification filter system, sodium salt purify filtration system
Filter membrane is using one kind in intermetallic compound filter membrane, ceramic filter membrane, high molecular polymer filter membrane.
8. sodium nitrate waste water recycling device system as claimed in claim 1, it is characterised in that pretreatment system (1) bag
Include Primary filter system (11).
9. sodium nitrate waste water recycling device system as claimed in claim 8, it is characterised in that the pretreatment system (1) is also
Including PH adjusting meanss (12), heat sink (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720949217.6U CN207210176U (en) | 2017-07-28 | 2017-07-28 | Sodium nitrate waste water recycling device system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720949217.6U CN207210176U (en) | 2017-07-28 | 2017-07-28 | Sodium nitrate waste water recycling device system |
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| Publication Number | Publication Date |
|---|---|
| CN207210176U true CN207210176U (en) | 2018-04-10 |
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ID=61814993
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720949217.6U Active CN207210176U (en) | 2017-07-28 | 2017-07-28 | Sodium nitrate waste water recycling device system |
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| Country | Link |
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| CN (1) | CN207210176U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357336A (en) * | 2019-07-19 | 2019-10-22 | 中冶南方工程技术有限公司 | A kind for the treatment of process and system of the high waste water containing nitrate nitrogen |
| CN110482575A (en) * | 2019-09-12 | 2019-11-22 | 中国石油化工股份有限公司 | A kind of sodium nitrate product increased quality system and method for improving |
| CN111892216A (en) * | 2019-12-27 | 2020-11-06 | 深圳市宝安东江环保技术有限公司 | Method for producing sodium nitrate by treating high-nitro-nitrogen wastewater |
-
2017
- 2017-07-28 CN CN201720949217.6U patent/CN207210176U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110357336A (en) * | 2019-07-19 | 2019-10-22 | 中冶南方工程技术有限公司 | A kind for the treatment of process and system of the high waste water containing nitrate nitrogen |
| CN110482575A (en) * | 2019-09-12 | 2019-11-22 | 中国石油化工股份有限公司 | A kind of sodium nitrate product increased quality system and method for improving |
| CN111892216A (en) * | 2019-12-27 | 2020-11-06 | 深圳市宝安东江环保技术有限公司 | Method for producing sodium nitrate by treating high-nitro-nitrogen wastewater |
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