CN109574307A - Remove the device of whole hardness in reverse osmosis concentrated water - Google Patents
Remove the device of whole hardness in reverse osmosis concentrated water Download PDFInfo
- Publication number
- CN109574307A CN109574307A CN201811538409.3A CN201811538409A CN109574307A CN 109574307 A CN109574307 A CN 109574307A CN 201811538409 A CN201811538409 A CN 201811538409A CN 109574307 A CN109574307 A CN 109574307A
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- China
- Prior art keywords
- import
- hardness
- thickener
- tank
- crystallizer
- 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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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 88
- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 24
- 230000008676 import Effects 0.000 claims abstract description 62
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000002562 thickening agent Substances 0.000 claims abstract description 46
- 229920001429 chelating resin Polymers 0.000 claims abstract description 36
- 238000004062 sedimentation Methods 0.000 claims abstract description 33
- 239000000292 calcium oxide Substances 0.000 claims abstract description 24
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000005189 flocculation Methods 0.000 claims abstract description 10
- 230000016615 flocculation Effects 0.000 claims abstract description 10
- 230000001112 coagulating effect Effects 0.000 claims abstract description 9
- 239000013078 crystal Substances 0.000 claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims abstract description 7
- 239000002699 waste material Substances 0.000 claims description 14
- 150000003839 salts Chemical class 0.000 claims description 13
- 238000002425 crystallisation Methods 0.000 claims description 7
- 230000008025 crystallization Effects 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 239000002351 wastewater Substances 0.000 claims description 6
- 239000000701 coagulant Substances 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims 2
- 238000003379 elimination reaction Methods 0.000 claims 2
- 239000004575 stone Substances 0.000 claims 2
- 239000012267 brine Substances 0.000 abstract description 10
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 10
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 235000011132 calcium sulphate Nutrition 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 208000028659 discharge Diseases 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229940096405 magnesium cation Drugs 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910001415 sodium ion Inorganic materials 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 241000040710 Chela Species 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F2001/5218—Crystallization
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Abstract
The present invention relates to a kind of devices of whole hardness in removal reverse osmosis concentrated water, including permanent hardness eliminates unit, temporary hardness eliminates unit and residual hardness eliminates unit；It includes crystallizer, thickener and centrifugal dehydrator that permanent hardness, which eliminates unit, the import of crystallizer is connect with strong brine intake line, the import of crystallizer is also connect with the dosing tank for flocculant and crystal seed to be added, the magma outlet of crystallizer is connect with the import of thickener, and the import of the discharge port and centrifugal dehydrator of thickener connects；It includes sequentially connected quick lime reaction tank, coagulative precipitation tank, flocculation sedimentation tank and sedimentation basin that temporary hardness, which eliminates unit, the water out of crystallizer, the water out of thickener, centrifugal dehydrator water out connect with the import of quick lime reaction tank；It includes chelating resin filter that residual hardness, which eliminates unit, and the water out of sedimentation basin is connect with the import of chelating resin filter, and the outlet of chelating resin filter connects discharge pipe line.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of dress for removing whole hardness in reverse osmosis concentrated water
It sets.
Background technique
Reverse osmosis membrane because its treatment effeciency height, effluent quality is good, simple operation and other advantages and be widely used in regeneration effluent
In zero-emission engineering.However reverse osmosis producing water ratio can only achieve 75% or so, the processing of reverse osmosis concentrated water be technically and
Problem economically.If concentrated water is directly discharged in environment, highly concentrated salt water will cause ecological environment serious
It influences, and causes the waste of water resource.The processing method of reverse osmosis concentrated water mainly includes surface water discharge, deep-well note at present
It penetrates, spray, thermal evaporation etc..But above method fails to well utilize reverse osmosis concentrated water, does not reduce concentrate fundamentally
Discharge, also create the waste of water resource.
Particularly, for sulfate concentration in water, the processing of calcium ion concentration and the very high strong brine of Na ion concentration,
Presently, there are the problem of there are three aspect: first is that highly concentrated strong brine is because contain antisludging agent, so that the difficulty of Crystallization Separation
Degree increases；Second is that the strong brine high for sulphates content, general processing method is to be converted to permanent hardness (calcium sulfate)
For temporary hardness (calcium carbonate), but the higher cost for the sodium carbonate being newly introduced；Third is that being adsorbed because Na ion concentration is high
The limitation of equation, residual hardness cannot be replaced with Na-ion exchanger.
Summary of the invention
The purpose of the present invention is at least solving one of above-mentioned problems of the prior art, which is by following skill
What art scheme was realized:
The invention proposes a kind of device of whole hardness in removal reverse osmosis concentrated water, including permanent hardness eliminate unit,
Temporary hardness eliminates unit and residual hardness eliminates unit；The permanent hardness eliminate unit include crystallizer, thickener and from
The import of heart dewaterer, the crystallizer is connect with strong brine intake line, and the import of the crystallizer is also and for being added wadding
Solidifying agent is connected with the dosing tank of crystal seed, and the magma outlet of the crystallizer is connect with the import of the thickener, the thickener
Discharge port connect with the import of the centrifugal dehydrator；It includes that sequentially connected quick lime is anti-that the temporary hardness, which eliminates unit,
Ying Chi, coagulative precipitation tank, flocculation sedimentation tank and sedimentation basin, the water out, described of the water out of the crystallizer, the thickener
The water out of centrifugal dehydrator is connect with the import of the quick lime reaction tank；It includes chelating that the residual hardness, which eliminates unit,
Resin filter, the water out of the sedimentation basin are connect with the import of the chelating resin filter, the chelating resin filtering
The outlet of device connects discharge pipe line.
It further includes the second thickener and the second centrifugal dehydrator that the temporary hardness, which eliminates unit, second thickener
Import is connect with the outlet of the sedimentation basin, and the discharge port of second thickener is connect with the import of the second centrifugal dehydrator,
Import of the water out with the chelating resin filter of the water out of second thickener, second centrifugal dehydrator
Connection.
The chelating resin filter is also connect with regenerated acid dosing tank.
The chelating resin filter is exported equipped with backwash waste, and the backwash waste outlet is reacted with the quick lime
The import in pond connects.
The sedimentation basin is inclined-plate clarifying basin, and quick lime dosing tank is equipped on the quick lime reaction tank, described mixed
Solidifying sedimentation basin is equipped with coagulant dosing tank, and flocculant dosing tank is equipped on the flocculation sedimentation tank.
The crystallizer includes crystallizing tank, guide shell, blender and capping, and the crystallizing tank is arranged in the guide shell
Inside, the blender are arranged in the guide shell, and the blender is propeller agitator, and the import of the crystallizer is set
It sets in the middle and lower part of the crystallizing tank, is exported in the bottom of the crystallizing tank equipped with the magma, the top of the crystallizing tank is set
There is settling section, forms ring cavity, the water out setting of the crystallizer between the top of the crystallizing tank and the outer wall of the capping
In the bottom of the ring cavity.
The top of the crystallizing tank is equipped with outward in the expansion segment of 30 ° of angles expansion, is equipped at the top of the expansion segment perpendicular
The region that the overflow baffle directly arranged, the expansion segment and overflow baffle are formed is the settling section, the overflow baffle and institute
It states and forms the ring cavity between the outer wall of capping.
The device of whole hardness in a kind of removal reverse osmosis concentrated water, including permanent hardness eliminates unit, temporary hardness is eliminated
Unit and residual hardness eliminate unit；It includes crystallizer, thickener and centrifugal dehydrator that the permanent hardness, which eliminates unit, described
The import of crystallizer is connect with strong brine intake line, the import of the crystallizer also with for be added flocculant and crystal seed plus
Medicine-chest connection, the crystallizer magma outlet is connect with the import of the thickener, the discharge port of the thickener with it is described
The import of centrifugal dehydrator connects；It includes sequentially connected quick lime reaction tank, coagulating sedimentation that the temporary hardness, which eliminates unit,
Pond, flocculation sedimentation tank and sedimentation basin, the water out of the crystallizer, the water out of the thickener, the centrifugal dehydrator
Water out is connect with the import of the quick lime reaction tank；It includes more medium filter and chela that the residual hardness, which eliminates unit,
Resin filter, the water out of the sedimentation basin are connect with the import of the more medium filter, the more medium filter
Outlet connect with the import of the chelating resin filter, the outlet of the chelating resin filter connects discharge pipe line.
It further includes the second thickener and the second centrifugal dehydrator that the temporary hardness, which eliminates unit, second thickener
Import is connect with the outlet of the sedimentation basin, and the discharge port of second thickener is connect with the import of the second centrifugal dehydrator,
The water out of second thickener, second centrifugal dehydrator water out with the import of the more medium filter connect
It connects.
The chelating resin filter is also connect with regenerated acid dosing tank, the chelating resin filter and multi-medium filtering
Backwash waste outlet is equipped on device, the backwash waste of the chelating resin filter exports anti-with the more medium filter
Wastewater outlet is washed to connect with the import of the quick lime reaction tank.
The present invention has the advantages that
Processing unit proposed by the invention can either eliminate the permanent hardness in strong brine, can also eliminate temporarily hard
Degree, additionally it is possible to eliminate residual hardness, the concentration of the calcium and magnesium cation in salt water goes to zero after treatment, is conducive to salt water
Concentration and zero discharge treatment in next step.In addition, treatment process of the present invention need not quote other displacer reagents, save medicament at
This, but also good calcium sulphate crystal has been recycled, farthest save resource.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of the embodiment of the present invention one；
Fig. 2 is the structural schematic diagram of the embodiment of the present invention two.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
It should be understood that term used herein merely for description particular example embodiment purpose, and have no intention into
Row limitation.Unless the context clearly indicates otherwise, otherwise singular " one " as used in the text, "one" and " described "
Can also indicate to include plural form.The terms "include", "comprise", " containing " and " having " are inclusives, and therefore
It indicates the presence of stated feature, step, operations, elements, and/or components, but presence or addition one or more is not precluded
A other feature, step, operation, component, assembly unit, and/or their combination.
Although can be described in the text using term first, second, third, etc. multiple element, component, region, layer and/
Or section, still, these component, assembly units, region, layer and/or section should not be limited by these terms.These terms can be only
For a component, assembly unit, region, layer or section are distinguished with another region, layer or section.Unless context clearly refers to
Out, do not implied that when otherwise the term and other numerical terms of such as " first ", " second " etc use in the text sequence or
Person's order.Therefore, first element discussed below, component, region, layer or section are in the introduction for not departing from example embodiment
In the case of can be referred to as second element, component, region, layer or section.
For ease of description, an element as illustrated in the diagram can be described use space relativeness term in the text
Either feature is relative to another element or the relationship of feature, these relativeness terms are, for example, " inside ", " outside ", " interior
Side ", " outside ", " following ", " lower section ", " above ", " top " etc..This spatial correlation term is intended to include removing to retouch in figure
The different direction of device in use or operation except the orientation drawn.For example, being retouched if the device in figure is overturn
State for " below other elements or feature " either the element " below other elements or feature " will then be orientated "
Above other elements or feature " either " above other elements or feature ".Therefore, exemplary term " in ... lower section " can
To include in orientation upper and under.In addition device can be oriented and (be rotated by 90 ° or in other directions) and used herein
Spatial correlation descriptor correspondingly explains.
Embodiment one:
As shown in Figure 1, the invention proposes a kind of device of whole hardness in removal reverse osmosis concentrated water, including permanent hardness
Eliminate unit 1, temporary hardness eliminates unit 2 and residual hardness eliminates unit 3.It includes crystallizer that permanent hardness, which eliminates unit 1,
101, the import of thickener 102 and centrifugal dehydrator 103, crystallizer 101 is connect with strong brine intake line, crystallizer 101
Import is also connect with the dosing tank 104 for flocculant and crystal seed to be added, magma outlet and the thickener 102 of crystallizer 101
Import connection, the discharge port of thickener 102 are connect with the import of centrifugal dehydrator 103.It includes sequentially that temporary hardness, which eliminates unit 2,
Quick lime reaction tank 201, coagulative precipitation tank 202, flocculation sedimentation tank 203 and the sedimentation basin 204 of connection, the water of crystallizer 101 go out
Mouth, the water out of thickener 102, centrifugal dehydrator 103 water out connect with the import of quick lime reaction tank 201.It is remaining
It includes chelating resin filter 301 that hardness, which eliminates unit 3, is filled with alpha-amino phosphonate chelating resin in chelating resin filter 301.
The water out of sedimentation basin 204 is connect with the import of chelating resin filter 301, and the outlet of chelating resin filter 301 connects row
Water lines 302.
Process using whole hardness of apparatus of the present invention removal reverse osmosis water is as follows:
1) reverse osmosis concentrated water is introduced into crystallizer 101 by strong brine intake line, meanwhile, it is connected by dosing tank 104
Into crystallizer 101, investment can eliminate the flocculant of the peptizaiton of antisludging agent and the calcium sulfate of crystal growth can be promoted brilliant
Kind.Concentrated water crystallizes in crystallizer 101, after the magma that crystallization process obtains enters the progress concentration of thickener 102, then conveys
It is carried out dehydrating to centrifugal dehydrator 103, the calcium sulfate of low-water-content is obtained after dehydration；The water that crystallization process is isolated is to disappear
Except the salt water of permanent hardness, the water that the salt water and thickener 102 and centrifugal dehydrator 103 are isolated is delivered to temporarily hard
Degree eliminates unit 2.
2) be delivered to temporary hardness eliminate unit 2 salt water in quick lime reaction tank 201 with Ca (OH)2React life
At calcium carbonate, under conditions of pH value is 11, magnesium ion is also precipitated out in the form of magnesium carbonate.Later, salt water again successively in
Coagulant is added in coagulative precipitation tank 202, and flocculant is added in flocculation sedimentation tank 203, is finally precipitated in sedimentation basin, from
And realize and be separated by solid-liquid separation, liquid obtained after separation is the salt water for eliminating temporary hardness.
3) water for eliminating permanent hardness and temporary hardness is delivered to chelating resin filter 301, can remove in water
Contained a small amount of calcium and magnesium cation, makes the concentration of calcium and magnesium cation in salt water go to zero, and the residue so far eliminated in salt water is hard
Degree.
Further, it further includes the second thickener 205 and the second centrifugal dehydrator 206 that temporary hardness, which eliminates unit 2, and second
The import of thickener 205 is connect with the outlet of sedimentation basin 204, the discharge port of the second thickener 205 and the second centrifugal dehydrator 206
Import connection, the water out of the second thickener 205, the second centrifugal dehydrator 206 water out with chelating resin filter
301 import connection.
Further, chelating resin filter 301 is also connect with regenerated acid dosing tank 303, regenerates chelating tree by pickling
Rouge.In addition, chelating resin filter 301 is exported equipped with backwash waste, backwash waste outlet and quick lime reaction tank 201 into
Mouth connection, pickling waste waters are neutralized by quick lime, do not generate any waste water.
Further, sedimentation basin 204 is inclined-plate clarifying basin, and quick lime dosing tank is equipped on quick lime reaction tank 201
207, it is equipped with coagulant dosing tank 208 on coagulative precipitation tank 202, flocculant dosing tank is equipped on flocculation sedimentation tank 203
209。
Further, crystallizer 101 includes crystallizing tank 111, guide shell 112, blender 113 and capping 114, guide shell
112 are arranged in the inside of crystallizing tank 111, and blender 113 is arranged in guide shell 112, and blender 113 is propeller agitator,
The middle and lower part of crystallizing tank 111 is arranged in the import of crystallizer 101, exports in the bottom of crystallizing tank 111 equipped with magma, crystallizing tank
111 top is equipped with settling section 116, and ring cavity 117, crystallizer are formed between the top of crystallizing tank 111 and the outer wall for covering 114
The bottom of ring cavity 117 is arranged in 101 water out 118.Crystallizer 101 at work, under the promotion of blender 113, water flow
It can decline along the inner wall of guide shell 112 and rise along the outer wall of guide shell 112, to form circulation, be stirred by adjusting
The revolving speed of device 113 is mixed, the rate of water flow rising and decline can be made into 9 times of 101 strong brine flow velocity of crystallizer, i.e. crystalline substance liquid
Reflux ratio is 800%.
Further, the top of crystallizing tank 111 is equipped with outward in the expansion segment of 30 ° of angles expansion, is set at the top of expansion segment
There is the overflow baffle 119 arranged vertically, the region that expansion segment and overflow baffle 119 are formed is settling section 116, overflow baffle 119
Ring cavity 117 is formed between the outer wall of capping 114.The salt water of the removal permanent hardness obtained by crystallization is via overflow baffle
119 spill into water out 118, eliminate unit 2 hence into temporary hardness.
Embodiment two:
The present embodiment the difference is that only with embodiment one: it further includes more medium filter that residual hardness, which eliminates unit 3,
304, the water out of sedimentation basin 204 is connect with the import of more medium filter 304, the outlet of more medium filter 304 and chelating
The import of resin filter 301 connects, and the outlet of chelating resin filter 301 connects discharge pipe line.The setting of rest part is equal
It is identical as previous embodiment.More medium filter 304 can remove trace suspension object in water removal, to avoid the pollution to resin.
In addition, the backwash waste of more medium filter 304 and the acid-bearing wastewater of chelating resin filter 301 can pass through
Waste water water pipe is introduced into quick lime reaction tank 201, utilizes backwash waste again.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. the device of whole hardness in a kind of removal reverse osmosis concentrated water, which is characterized in that including permanent hardness elimination unit, temporarily
Hardness eliminates unit and residual hardness eliminates unit；
It includes crystallizer, thickener and centrifugal dehydrator that the permanent hardness, which eliminates unit, the import of the crystallizer and dense salt
Water input conduit connection, the import of the crystallizer are also connect with the dosing tank for flocculant and crystal seed to be added, the crystallization
The magma outlet of device is connect with the import of the thickener, and the import of the discharge port of the thickener and the centrifugal dehydrator connects
It connects；
The temporary hardness eliminates unit and includes sequentially connected quick lime reaction tank, coagulative precipitation tank, flocculation sedimentation tank and sink
Shallow lake pond, the water out of the crystallizer, the water out of the thickener, the centrifugal dehydrator water out with the raw stone
The import of grey reaction tank connects；
It includes chelating resin filter, the water out of the sedimentation basin and the chelating resin mistake that the residual hardness, which eliminates unit,
The import of filter connects, and the outlet of the chelating resin filter connects discharge pipe line.
2. the device of whole hardness in a kind of removal reverse osmosis concentrated water as described in claim 1, which is characterized in that described temporary
It further includes the second thickener and the second centrifugal dehydrator, import and the sedimentation basin of second thickener that hardness, which eliminates unit,
Outlet connection, the discharge port of second thickener connect with the import of the second centrifugal dehydrator, second thickener
Water out, second centrifugal dehydrator water out connect with the import of the chelating resin filter.
3. the device of whole hardness in a kind of removal reverse osmosis concentrated water as described in claim 1, which is characterized in that the chelating
Resin filter is also connect with regenerated acid dosing tank.
4. the device of whole hardness in a kind of removal reverse osmosis concentrated water as claimed in claim 3, which is characterized in that the chelating
Resin filter is exported equipped with backwash waste, and the backwash waste outlet is connect with the import of the quick lime reaction tank.
5. such as a kind of described in any item devices for removing whole hardness in reverse osmosis concentrated water of Claims 1-4, feature exists
In the sedimentation basin is inclined-plate clarifying basin, quick lime dosing tank is equipped on the quick lime reaction tank, in the coagulating sedimentation
Pond is equipped with coagulant dosing tank, and flocculant dosing tank is equipped on the flocculation sedimentation tank.
6. such as a kind of described in any item devices for removing whole hardness in reverse osmosis concentrated water of Claims 1-4, feature exists
In, the crystallizer includes crystallizing tank, guide shell, blender and capping, and the inside of the crystallizing tank is arranged in the guide shell,
The blender is arranged in the guide shell, and the blender is propeller agitator, and the import setting of the crystallizer exists
The middle and lower part of the crystallizing tank is exported in the bottom of the crystallizing tank equipped with the magma, and the top of the crystallizing tank is equipped with clear
Clear area, forms ring cavity between the top of the crystallizing tank and the outer wall of the capping, the water out of the crystallizer is arranged in institute
State the bottom of ring cavity.
7. the device of whole hardness in a kind of removal reverse osmosis concentrated water as claimed in claim 6, which is characterized in that the crystallization
The top of tank is equipped with outward in the expansion segment of 30 ° of angles expansion, and the overflow baffle arranged vertically is equipped at the top of the expansion segment,
The region that the expansion segment and overflow baffle are formed is the settling section, shape between the overflow baffle and the outer wall of the capping
At the ring cavity.
8. the device of whole hardness in a kind of removal reverse osmosis concentrated water, which is characterized in that including permanent hardness elimination unit, temporarily
Hardness eliminates unit and residual hardness eliminates unit；
It includes crystallizer, thickener and centrifugal dehydrator that the permanent hardness, which eliminates unit, the import of the crystallizer and dense salt
Water input conduit connection, the import of the crystallizer are also connect with the dosing tank for flocculant and crystal seed to be added, the crystallization
The magma outlet of device is connect with the import of the thickener, and the import of the discharge port of the thickener and the centrifugal dehydrator connects
It connects；
The temporary hardness eliminates unit and includes sequentially connected quick lime reaction tank, coagulative precipitation tank, flocculation sedimentation tank and sink
Shallow lake pond, the water out of the crystallizer, the water out of the thickener, the centrifugal dehydrator water out with the raw stone
The import of grey reaction tank connects；
It includes more medium filter and chelating resin filter that the residual hardness, which eliminates unit, the water out of the sedimentation basin with
The import of the more medium filter connects, and the outlet of the more medium filter connects with the import of the chelating resin filter
It connects, the outlet of the chelating resin filter connects discharge pipe line.
9. the device of whole hardness in a kind of removal reverse osmosis concentrated water as claimed in claim 8, which is characterized in that described temporary
It further includes the second thickener and the second centrifugal dehydrator, import and the sedimentation basin of second thickener that hardness, which eliminates unit,
Outlet connection, the discharge port of second thickener connect with the import of the second centrifugal dehydrator, second thickener
Water out, second centrifugal dehydrator water out connect with the import of the more medium filter.
10. a kind of device for removing whole hardness in reverse osmosis concentrated water as claimed in claim 8 or 9, which is characterized in that described
Chelating resin filter is also connect with regenerated acid dosing tank, is equipped on the chelating resin filter and more medium filter anti-
Wastewater outlet is washed, the backwash waste outlet of the chelating resin filter and the backwash waste outlet of the more medium filter are equal
It is connect with the import of the quick lime reaction tank.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114873745A (en) * | 2022-07-08 | 2022-08-09 | 金科环境股份有限公司 | Treatment system and method for reverse osmosis concentrated water with high temporary hardness |
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