CN108862532A - The processing system and its processing method of chelate resin tower waste water in a kind of salt refining - Google Patents
The processing system and its processing method of chelate resin tower waste water in a kind of salt refining Download PDFInfo
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- CN108862532A CN108862532A CN201810753499.1A CN201810753499A CN108862532A CN 108862532 A CN108862532 A CN 108862532A CN 201810753499 A CN201810753499 A CN 201810753499A CN 108862532 A CN108862532 A CN 108862532A
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- waste water
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- preneutralization
- pipe
- alkaline
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- 239000002351 wastewater Substances 0.000 title claims abstract description 180
- 229920005989 resin Polymers 0.000 title claims abstract description 23
- 239000011347 resin Substances 0.000 title claims abstract description 23
- 239000013522 chelant Substances 0.000 title claims abstract description 19
- 238000007670 refining Methods 0.000 title claims abstract description 16
- 150000003839 salts Chemical class 0.000 title claims abstract description 16
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000010790 dilution Methods 0.000 claims abstract description 76
- 239000012895 dilution Substances 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000000034 method Methods 0.000 claims abstract description 29
- 239000002253 acid Substances 0.000 claims abstract description 28
- 230000008569 process Effects 0.000 claims abstract description 22
- 239000002699 waste material Substances 0.000 claims abstract description 22
- 238000006386 neutralization reaction Methods 0.000 claims description 63
- 238000011282 treatment Methods 0.000 claims description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 35
- 239000007788 liquid Substances 0.000 claims description 23
- 230000003472 neutralizing effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 3
- DKAGJZJALZXOOV-UHFFFAOYSA-N hydrate;hydrochloride Chemical compound O.Cl DKAGJZJALZXOOV-UHFFFAOYSA-N 0.000 claims 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 claims 1
- 229920001429 chelating resin Polymers 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 239000002131 composite material Substances 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 3
- 229910001424 calcium ion Inorganic materials 0.000 description 3
- 229910001425 magnesium ion Inorganic materials 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical group O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- PXFBZOLANLWPMH-UHFFFAOYSA-N 16-Epiaffinine Natural products C1C(C2=CC=CC=C2N2)=C2C(=O)CC2C(=CC)CN(C)C1C2CO PXFBZOLANLWPMH-UHFFFAOYSA-N 0.000 description 1
- 241000040710 Chela Species 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000004065 wastewater treatment 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The present invention discloses the processing system and its processing method of chelate resin tower waste water in a kind of salt refining, and the processing system includes：Preneutralization processing unit, alkaline waste water dilution device and mixer；The preneutralization processing unit is connect with the salkali waste pipe and the spent acid pipe respectively；The preneutralization processing unit is connect with the mixer；The alkaline waste water dilution device is connect with the salkali waste pipe；The alkaline waste water dilution device is connect by the first mixer water inlet pipe with the mixer；The mixer is connected to by mixer outlet pipe with drainpipe；The mixer outlet pipe is equipped with pH value measuring device, and the pH value measuring device is set to the flow control valve on the first mixer water inlet pipe by control system control.The processing system is compact-sized, and the processing system and the processing method are able to satisfy chelating resin regenerative process and generate a large amount of acid waste water and alkaline waste water process demand, and processing cost is low.
Description
Technical field
The present invention relates to production of caustic soda technical fields, and in particular to the processing of chelate resin tower waste water in a kind of salt refining
System and its processing method.
Background technique
Country's caustic soda is based on ionic membrane method production technology at present.During ionic membrane method produces caustic soda, secondary brine
Purification corollary equipment is chelate resin tower, loads chelating resin in resin tower.Chelating resin is active ion-exchange group
Organic polymer, and with fixed negative electrical charge, these negative electrical charges fixed have relatively affine with the ion with positive charge
Power.When chelating resin is with saline contacts containing Ca2+, Mg2+, in Ca2+, Mg2+ ionic compartmentation chelating resin therein not
Stable sodium ion, to play the purpose of refined brine.After chelating resin adsorbs calcium and magnesium ion, exchange capacity is lost, is extensive
Its multiple ability, it is necessary to be regenerated.It is with hydrochloric acid that the metal cations such as the calcium of resin adsorption, magnesium are molten from getting off first when regeneration,
It is made the transition again with NaOH solution, it is made to be transformed into the sodium form with exchange capacity, the resin after regeneration can be reused.The mistake
Journey generates a large amount of acid waste water, alkaline waste water.Conventional wastewater treatment equipment processing capacity is limited at present, can not accommodate processing
Acidity, the alkaline waste water demand of about 200m3 after regenerating every time.
Summary of the invention
In view of this, this application provides a kind of processing system of chelate resin tower waste water in salt refining and its processing sides
Method, the processing system is compact-sized, and the processing system and the processing method are able to satisfy the generation of chelating resin regenerative process
A large amount of acid waste water and alkaline waste water process demand, and processing cost is low.
In order to solve the above technical problems, technical solution provided by the invention is chelate resin tower waste water in a kind of salt refining
Processing system, chelate resin tower outlet connection salkali waste pipe and spent acid pipe, which is characterized in that the processing system includes：In pre-
With processing unit, alkaline waste water dilution device and mixer；The preneutralization processing unit respectively with the salkali waste pipe and described
The connection of spent acid pipe；The preneutralization processing unit is connect with the mixer；The alkaline waste water dilution device and the salkali waste
Pipe connection；The alkaline waste water dilution device is connect by the first mixer water inlet pipe with the mixer；The mixer is logical
Mixer outlet pipe is crossed to be connected to drainpipe；The mixer outlet pipe is equipped with pH value measuring device, the pH value measuring device
The flow control valve being set to by control system control on the first mixer water inlet pipe.
Preferably, the mixer outlet pipe successively through the first neutralisation treatment device and the second neutralisation treatment device with it is described
Drainpipe connection.
Preferably, it is connected between the first neutralisation treatment device and the second neutralisation treatment device by hose.
Preferably, the drainpipe connects composite wastewater station.
Preferably, the first neutralisation treatment device and the second neutralisation treatment device and the preneutralization processing unit
It is connected by the second preneutralization processing unit outlet pipe；The alkaline waste water dilution device by the second diluted alkaline device outlet pipe with
The second neutralisation treatment device connection.
Preferably, the second neutralisation treatment device is connect through the second two-way pipeline with the drainpipe；Described second pair
The second diluted alkaline device outlet pipe is connected on pipeline.
Preferably, the second neutralisation treatment device connects instrument air pipeline.
Preferably, the preneutralization processing unit is through the first preneutralization processing unit outlet pipe, neutralization pump, the second mixer
Water inlet pipe is connected to the mixer；The second mixer water inlet pipe is equipped at preneutralization liquid circulation pipe and the preneutralization
Manage device connection.
Preferably, the alkaline waste water dilution device connects the first preneutralization processing unit by the first two-way pipeline
Outlet pipe.
Preferably, the alkaline waste water dilution device is connect with the salkali waste pipe by diluted alkaline device water inlet pipe, the alkali
Property wastewater dilution device water inlet pipe connect with one end of the described first two-way pipeline, the connection of the other end of the first two-way pipeline
The first preneutralization processing unit outlet pipe.
Preferably, the alkaline waste water dilution device is through the first diluted alkaline device outlet pipe, diluted alkaline pump, first mixer
Water inlet pipe is connected to the mixer；The first mixer water inlet pipe is equipped with sig water circulation pipe and the alkaline waste water is dilute
Release device connection.
Preferably, the preneutralization processing unit and the alkaline waste water dilution device are all connected with instrument air pipeline.
Preferably, the preneutralization processing unit, the first neutralisation treatment device and the second neutralisation treatment device
For neutralization bucket.
Preferably, the control system is DCS control system.
Preferably, between the preneutralization processing unit and the salkali waste pipe, the preneutralization processing unit and described useless
Between acid tube, between the preneutralization processing unit and the instrument air pipeline, the alkaline waste water dilution device and described
Between salkali waste pipe, between the alkaline waste water dilution device and the instrument air pipeline, the first preneutralization processing unit
On outlet pipe, on the second mixer water inlet pipe, on the preneutralization liquid circulation pipe, the first diluted alkaline device outlet pipe
On, it is described dilute on the second two-way pipeline on the second diluted alkaline device outlet pipe on the first mixer water inlet pipe
On lye circulation pipe, on the first two-way pipeline, on the second preneutralization processing unit outlet pipe and the diluted alkaline device
Valve is equipped on water inlet pipe.
Preferably, the described first two-way pipeline is equipped with shut-off valve.
Preferably, the alkaline waste water dilution device is equipped with anti-overflow outlet pipe.
Preferably, it is connect at the top of described anti-overflow outlet pipe one end and the alkaline waste water dilution device, the anti-overflow outlet pipe is another
One end is connect with reservoir.
The present invention also provides a kind of processing method of chelate resin tower waste water in salt refining, tree is chelated in salt refining
Rouge tower waste water packet alkaline waste water and acid waste water, the treating method comprises：
Alkaline waste water and acid waste water are mixed and carry out preneutralization processing, obtains preneutralization liquid；The alkaline waste water is diluted,
Alkaline waste water after being diluted；
Alkaline waste water after the preneutralization waste water and the dilution is mixed and is neutralized, obtains neutralizing waste water；
The neutralization pH value of waste water is measured, the alkaline waste water flow after the dilution is adjusted according to the neutralization pH value of waste water.
Preferably, the preneutralization treatment process and the dilution alkaline waste water process are stirred using instrument air
It mixes.
Preferably, NaOH content is 25~35wt% in the alkaline waste water；NaOH in alkaline waste water after the dilution
Content is 12~13wt%；HCl content is 4~7wt% in the acid waste water；In the preneutralization liquid HCl content be 0.3~
0.5g/L；The neutralization pH value of waste water is 6~9.
Preferably, the dilution alkaline waste water process specifically includes：By the alkaline waste water and the preneutralization liquid
Mixing.
Compared with prior art, detailed description are as follows by the application：
Processing system the present invention provides chelate resin tower waste water in a kind of salt refining includes：Preneutralization processing dress
It sets, alkaline waste water dilution device and mixer；The alkaline waste water and HCl content that NaOH content is 25~35wt% are 4~5g/L
Acid waste water mixed in preneutralization processing unit carry out preneutralization processing, obtain preneutralization liquid, HCl content in preneutralization liquid
For 4~7wt%；In alkaline waste water dilution device, the alkaline waste water is diluted, obtaining NaOH content is the dilute of 12~13wt%
Alkaline waste water after releasing；Alkaline waste water after dilution mixes in a mixer with preneutralization liquid to be neutralized, and is neutralized
Waste water neutralizes waste water by mixer outlet pipe and enters composite wastewater station through drainpipe.Mixer outlet pipe is equipped with pH value measurement dress
Set, measurement neutralize pH value of waste water, according to the neutralizations pH value of waste water by control system control set on first mixer into
Flow control valve on water pipe adjusts the alkaline waste water flow after the dilution.Processing system provided by the invention can satisfy chela
Resin regenerative process generates a large amount of acid waste water and alkaline waste water process demand, the neutralization pH value of waste water obtained after processing are
It can be controlled to 6~9, the pollution to environment can be reduced with outlet.Meanwhile processing system of the present invention is compact-sized, it is at low cost.
Further, mixer outlet pipe of the present invention successively through the first neutralisation treatment device and the second neutralisation treatment device with
Drainpipe buffers to waste water is neutralized, ensure that a large amount of acid waste water and alkaline waste water process demand.
Further, the first neutralisation treatment device and the second neutralisation treatment device and preneutralization processing unit are pre- by second
The connection of neutralisation treatment device outlet pipe；Alkaline waste water dilution device passes through at the second diluted alkaline device outlet pipe and second neutralization
Manage device connection；It ensure that alkaline waste water and preneutralization liquid in mixer failure, after dilution can be in the second neutralisation treatments
Mixing is neutralized in device, obtains neutralizing waste water.
Further, preneutralization processing unit through the first preneutralization processing unit outlet pipe, neutralize pump, the second mixer into
Water pipe is connected to mixer；Second mixer water inlet pipe is equipped with preneutralization liquid circulation pipe and connect with preneutralization processing unit；It protects
It is abundant preneutralization processing has been demonstrate,proved.Preneutralization processing unit connects instrument air pipeline, and preneutralization treatment process uses instrument air
It is stirred, further, ensure that preneutralization processing sufficiently, ensure that a large amount of acid waste water and alkaline waste water process demand.
Further, alkaline waste water dilution device is through the first diluted alkaline device outlet pipe, diluted alkaline pump, the first mixer water inlet pipe
It is connected to mixer；First mixer water inlet pipe is equipped with sig water circulation pipe and connect with alkaline waste water dilution device；It ensure that
It is abundant to dilute alkaline waste water preneutralization processing.Alkaline waste water dilution device connects instrument air pipeline, dilutes alkaline waste water process
Be stirred using instrument air, further, ensure that dilution alkaline waste water process it is abundant, ensure that a large amount of acid waste water and
Alkaline waste water process demand.
Further, alkaline waste water dilution device connects the water outlet of the first preneutralization processing unit by the first two-way pipeline
Pipe, alkaline waste water dilution device connect with salkali waste pipe by diluted alkaline device water inlet pipe, alkaline waste water dilution device water inlet pipe with give up
The connecting pin of alkali pipe connects one end of the first two-way pipeline, and the other end of the first two-way pipeline connects the first preneutralization processing unit
Outlet pipe.Pre-neutralization process, alkaline waste water is through salkali waste pipe, the first two-way pipeline, the first preneutralization processing unit outlet pipe, neutralization
Pump and sig water circulation pipe enter preneutralization processing unit；Alkaline waste water process is diluted, preneutralization liquid is handled through the first preneutralization
Device outlet pipe, the first two-way pipeline and alkaline waste water dilution device water inlet pipe enter alkaline waste water dilution device, alkaline waste water
Enter alkaline waste water dilution device through salkali waste pipe and alkaline waste water dilution device water inlet pipe.Processing system of the present invention is compact-sized,
And it ensure that a large amount of acid waste water and alkaline waste water process demand.Realization mixes alkaline waste water with preneutralization liquid, i.e., with pre-
Neutralizer dilutes alkaline waste water.Processing system provided by the invention is compact-sized, dilutes without external water pipe, cost-saved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the processing system schematic diagram of chelate resin tower waste water in salt refining provided by the invention；
Marginal data：
1, salkali waste pipe；2, spent acid pipe；3, preneutralization processing unit；4, alkaline waste water dilution device；5, mixer；6, pH value
Measuring device；7, control system；8, flow control valve；9, the first neutralisation treatment device；
10, the second neutralisation treatment device；11, pump is neutralized；12, diluted alkaline pumps；13, instrument air pipeline；14, mixer is discharged
Pipe；15, drainpipe；16, the first preneutralization processing unit outlet pipe；17, the second preneutralization processing unit outlet pipe；18, first
Mixer water inlet pipe；19, the second mixer water inlet pipe；20, the first diluted alkaline device outlet pipe；21, the second diluted alkaline device outlet pipe；
22, preneutralization liquid circulation pipe；23, sig water circulation pipe；24, the first two-way pipeline；25, the second two-way pipeline；26, diluted alkaline device
Water inlet pipe；27, anti-overflow outlet pipe；28, reservoir；29, composite wastewater station.
Specific embodiment
It is right combined with specific embodiments below in order to make those skilled in the art more fully understand technical solution of the present invention
The present invention is described in further detail.
Embodiment 1
As shown in Figure 1, in a kind of salt refining chelate resin tower waste water processing system, chelate resin tower outlet connection is useless
Alkali pipe 1 and spent acid pipe 2, the processing system include：Preneutralization processing unit 3, alkaline waste water dilution device 4 and mixer 5；Institute
Preneutralization processing unit 3 is stated to connect with the salkali waste pipe 1 and the spent acid pipe 2 respectively；The preneutralization processing unit 3 with it is described
Mixer 5 connects；The alkaline waste water dilution device 4 is connect with the salkali waste pipe 1；The alkaline waste water dilution device 4 passes through
First mixer, 5 water inlet pipe is connect with the mixer 5；The mixer 5 is connected by mixer outlet pipe 14 and drainpipe 15
It is logical；The mixer outlet pipe 14 is equipped with pH value measuring device 6, and the pH value measuring device 6 is set to by the control of control system 7
Flow control valve 8 on the first mixer water inlet pipe 18.
The processing method of chelate resin tower waste water in above-mentioned salt refining, chelate resin tower waste water packet alkalinity in salt refining
Waste water and acid waste water, the treating method comprises：
Alkaline waste water and acid waste water are mixed in preneutralization processing unit 3 and carry out preneutralization processing, obtains preneutralization
Liquid；The alkaline waste water is diluted in the alkaline waste water dilution device 4, the alkaline waste water after being diluted；
Alkaline waste water after the preneutralization waste water and the dilution is mixed in progress in the mixer 5 and is located
Reason obtains neutralizing waste water；The neutralization pH value of waste water is measured using the pH value measuring device 6, according to the neutralization wastewater pH
Value adjusts the alkali after the dilution by the flow control valve 8 that the control of control system 7 is set on 5 water inlet pipe of the first mixer
Property wastewater flow.
Wherein, NaOH content is 25~35wt% in the alkaline waste water；NaOH contains in alkaline waste water after the dilution
Amount is 12~13wt%；HCl content is 4~7wt% in the acid waste water；In the preneutralization liquid HCl content be 0.3~
0.5g/L；The neutralization pH value of waste water is 6~9.
Embodiment 2,
The difference of the present embodiment and embodiment 1 is：
Processing system：
As shown in Figure 1.
The drainpipe 15 connects composite wastewater station 29.
5 outlet pipe of mixer is successively through the first neutralisation treatment device 9 and the second neutralisation treatment device 10 and the row
Water pipe 15 connects, and is connected between the first neutralisation treatment device 9 and the second neutralisation treatment device 10 by hose.It is described
First neutralisation treatment device 9 and the second neutralisation treatment device 10 and the preneutralization processing unit 3 pass through the second preneutralization
Processing unit outlet pipe 17 connects；The alkaline waste water dilution device 4 passes through the second diluted alkaline device outlet pipe 21 and described second
Neutralisation treatment device 10 connects；The second neutralisation treatment device 10 is connect through the second two-way pipeline 25 with the drainpipe 15；
The second diluted alkaline device outlet pipe 21 is connected on the second two-way pipeline 25；The second neutralisation treatment device 10 connects instrument
Table air pipeline 13.
The preneutralization processing unit 3 through the first preneutralization processing unit outlet pipe 16, neutralize pump the 11, second mixer into
Water pipe 19 is connected to the mixer 5；The second mixer water inlet pipe 19 be equipped with preneutralization liquid circulation pipe 22 with it is described pre-
Neutralisation treatment device 3 connects；The alkaline waste water dilution device 4 is connected at first preneutralization by the first two-way pipeline 24
Manage device outlet pipe 16；The alkaline waste water dilution device 4 is connect with the salkali waste pipe 1 by diluted alkaline device water inlet pipe 26, institute
Alkaline waste water dilution device water inlet pipe 26 is stated to connect with one end of the described first two-way pipeline 24, the first two-way pipeline 24
The other end connects the first preneutralization processing unit outlet pipe 16.
The alkaline waste water dilution device 4 through the first diluted alkaline device outlet pipe 20, diluted alkaline pump 12, first mixer into
Water pipe 18 is connected to the mixer 5；The first mixer water inlet pipe 18 is equipped with sig water circulation pipe 23 and the alkalinity
Wastewater dilution device 4 connects.
The preneutralization processing unit 3 and the alkaline waste water dilution device 4 are all connected with instrument air pipeline 13.It is described pre-
Neutralisation treatment device 3, the first neutralisation treatment device 9 and the second neutralisation treatment device 10 are neutralization bucket.The control
System 7 is DCS control system 7.
Between the preneutralization processing unit 3 and the salkali waste pipe 1, the preneutralization processing unit 3 and the spent acid pipe 2
Between, between the preneutralization processing unit 3 and the instrument air pipeline 13, the alkaline waste water dilution device 4 and described
Between salkali waste pipe 1, between the alkaline waste water dilution device 4 and the instrument air pipeline 13, the first preneutralization processing
On device outlet pipe 16, on the second mixer water inlet pipe 19, on the preneutralization liquid circulation pipe 22, the first diluted alkaline dress
It sets on outlet pipe 20, on the first mixer water inlet pipe 18, on the second diluted alkaline device outlet pipe 21, described second is two-way
On pipeline 25, on the sig water circulation pipe 23, on the first two-way pipeline 24, the second preneutralization processing unit water outlet
On pipe 17 and valve is equipped on the diluted alkaline device water inlet pipe 26.The first two-way pipeline and 24 is equipped with shut-off valve.
The alkaline waste water dilution device 4 is equipped with anti-overflow outlet pipe 27, described anti-overflow 27 one end of outlet pipe and the alkaline waste water
It is connected at the top of dilution device 4, anti-overflow 27 other end of outlet pipe is connect with reservoir 28.
Processing method：
The preneutralization treatment process and the dilution alkaline waste water process are stirred using instrument air.
Neutralize waste water through mixer outlet pipe 14, the first neutralisation treatment device 9, the second neutralisation treatment device drainpipe 10 into
Enter composite wastewater station 29.10 pairs of first neutralisation treatment device 9, the second neutralisation treatment device neutralization waste water play buffer function.
When mixer 5 damages, it can close on the valve on the first mixer water inlet pipe 18 and the second mixer water inlet pipe 19
Valve, open the second diluted alkaline device outlet pipe 21 on valve, the valve on the second preneutralization processing unit outlet pipe 17 and
Valve on the second two-way pipeline 25 neutralizes at device so that the alkaline solution after preneutralization waste water and dilution enters second
Reason device 10 is neutralized, which is used and be stirred using instrument air.
Further, the first neutralisation treatment device 9 and the second neutralisation treatment device 10 and preneutralization processing unit 3 pass through the
The connection of two preneutralization processing unit outlet pipes 17；Alkaline waste water dilution device 4 by the second diluted alkaline device outlet pipe 21 with it is described
The connection of second neutralisation treatment device 10；It ensure that alkaline waste water in 5 failure of mixer, after dilution and preneutralization liquid can be
It mixes and is neutralized in second neutralisation treatment device 10, obtain neutralizing waste water.
Pre-neutralization process, alkaline waste water is through salkali waste pipe 1, the first two-way pipeline 24, the first preneutralization processing unit outlet pipe
16, it neutralizes pump 11 and sig water circulation pipe 23 enters preneutralization processing unit 3；Alkaline waste water process is diluted, preneutralization liquid is through the
One preneutralization processing unit, 3 outlet pipe, the first two-way pipeline 24 and diluted alkaline device water inlet pipe 26 enter alkaline waste water dilution device
4, alkaline waste water enters alkaline waste water dilution device 4 through salkali waste pipe 1 and diluted alkaline device water inlet pipe 26.Realization is by alkaline waste water and in advance
Neutralizer mixing, the alkaline waste water after being diluted.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (10)
1. the processing system of chelate resin tower waste water in a kind of salt refining, chelate resin tower outlet connection salkali waste pipe and spent acid
Pipe, which is characterized in that the processing system includes：Preneutralization processing unit, alkaline waste water dilution device and mixer；It is described pre-
Neutralisation treatment device is connect with the salkali waste pipe and the spent acid pipe respectively；The preneutralization processing unit and the mixer connect
It connects；The alkaline waste water dilution device is connect with the salkali waste pipe；The alkaline waste water dilution device by the first mixer into
Water pipe is connect with the mixer；The mixer is connected to by mixer outlet pipe with drainpipe；The mixer outlet pipe
Equipped with pH value measuring device, the pH value measuring device is set on the first mixer water inlet pipe by control system control
Flow control valve.
2. processing system according to claim 1, which is characterized in that the mixer outlet pipe successively through the first neutralization at
Reason device and the second neutralisation treatment device are connect with the drainpipe.
3. processing system according to claim 1, which is characterized in that the preneutralization processing unit through the first preneutralization at
Reason device outlet pipe, neutralization pump, the second mixer water inlet pipe are connected to the mixer；It is set on the second mixer water inlet pipe
There is preneutralization liquid circulation pipe to connect with the preneutralization processing unit.
4. processing system according to claim 3, which is characterized in that the alkaline waste water dilution device is two-way by first
Pipeline connects the first preneutralization processing unit outlet pipe.
5. processing system according to claim 1, which is characterized in that the alkaline waste water dilution device is filled through the first diluted alkaline
Outlet pipe, diluted alkaline pump, the first mixer water inlet pipe is set to be connected to the mixer；It is set on the first mixer water inlet pipe
There is sig water circulation pipe to connect with the alkaline waste water dilution device.
6. processing system according to claim 1, which is characterized in that the preneutralization processing unit and the alkaline waste water
Dilution device is all connected with instrument air pipeline.
7. the processing method of chelate resin tower waste water in a kind of salt refining, chelate resin tower waste water packet alkalinity is useless in salt refining
Water and acid waste water, which is characterized in that the treating method comprises：
Alkaline waste water and acid waste water are mixed and carry out preneutralization processing, obtains preneutralization liquid；The alkaline waste water is diluted, is obtained
Alkaline waste water after dilution；
Alkaline waste water after the preneutralization waste water and the dilution is mixed and is neutralized, obtains neutralizing waste water；Measurement
The neutralization pH value of waste water adjusts the alkaline waste water flow after the dilution according to the neutralization pH value of waste water.
8. processing method according to claim 1, which is characterized in that described in the preneutralization treatment process and the dilution
Alkaline waste water process is stirred using instrument air.
9. processing method according to claim 1, which is characterized in that in the alkaline waste water NaOH content be 25~
35wt%；NaOH content is 12~13wt% in alkaline waste water after the dilution；In the acid waste water HCl content be 4~
7wt%；HCl content is 0.3~0.5g/L in the preneutralization liquid；The neutralization pH value of waste water is 6~9.
10. processing method according to claim 1, which is characterized in that the dilution alkaline waste water process is specifically wrapped
It includes：The alkaline waste water is mixed with the preneutralization liquid.
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| CN201810753499.1A CN108862532A (en) | 2018-07-10 | 2018-07-10 | The processing system and its processing method of chelate resin tower waste water in a kind of salt refining |
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|---|---|---|---|---|
| EP0758627B1 (en) * | 1995-08-16 | 2001-04-11 | Sharp Kabushiki Kaisha | Water treating method and apparatus treating waste water by using ion exchange resin |
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| EP0758627B1 (en) * | 1995-08-16 | 2001-04-11 | Sharp Kabushiki Kaisha | Water treating method and apparatus treating waste water by using ion exchange resin |
| JP4282962B2 (en) * | 2002-08-01 | 2009-06-24 | 月島環境エンジニアリング株式会社 | Wastewater neutralization method |
| CN1951839A (en) * | 2006-11-17 | 2007-04-25 | 辽宁三和环境工程有限公司 | Method and apparatus for treating acid and alkaline waste water |
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Application publication date: 20181123 |