CN208429992U - A kind of processing unit of resin regeneration waste water - Google Patents
A kind of processing unit of resin regeneration waste water Download PDFInfo
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- CN208429992U CN208429992U CN201821055883.6U CN201821055883U CN208429992U CN 208429992 U CN208429992 U CN 208429992U CN 201821055883 U CN201821055883 U CN 201821055883U CN 208429992 U CN208429992 U CN 208429992U
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Abstract
The utility model provides a kind of processing unit of resin regeneration waste water, the evaporation process unit that electrodialysis process unit, the water inlet that nanofiltration processing unit, the water inlet being connected including raw water tank, the water inlet for storing resin regeneration waste water with the water outlet of raw water tank are connected with the outlet of the concentrated water of nanofiltration processing unit are connected with the outlet of the concentrated water of electrodialysis process unit, the water outlet of nanofiltration processing unit is connected with the external world, and the water outlet of electrodialysis process unit is connected with the water inlet of nanofiltration processing unit.The utility model makes final water outlet that can reduce the discharge amount of sewage with qualified discharge, while through pervaporation fractional crystallization, obtaining different inorganic salts using the device of " nanofiltration+electrodialysis+evaporation ", has certain economic benefit.
Description
Technical field
The utility model relates to a kind of processing units of resin regeneration waste water.
Background technique
TDS (Total dissolved solids), i.e. total dissolved solidss, also known as dissolvability solid amount, measurement unit
For mg/litre (mg/L), it shows in 1 liter of water dissolved with how many milligrams of soluble solids.
Ion-exchange is widely used in preparing softened water and demineralized water at present.During ion exchange resin regeneration
A large amount of brine waste can be discharged.Ion exchange resin regeneration acidic and alkaline waste water is largely seen as a kind of waste, with water
Greatly, high organic content and the features such as be difficult to biodegrade.General wastewater treatment method such as flocculence, conventional chemical aoxidize
Method, biochemical method are difficult to prove effective to ion exchange resin regeneration acidic and alkaline waste water.Therefore, the current waste water that is treated as of such waste water is controlled
One of problem of reason.Therefore, it is effectively treated for this effluent part, enables processed waste water qualified discharge, to make
Brine waste recycling is obtained, is had a very important significance.
Utility model content
The purpose of this utility model is to provide the inorganic salts that can be recycled in resin regeneration waste water, while making through handling
Waste water be capable of the processing unit of qualified discharge.
In order to solve the above technical problems, the utility model adopts the following technical solution:
One purpose of the utility model is to provide a kind of processing unit of resin regeneration waste water, including for storing resin
Nanofiltration processing unit, water inlet and the institute that raw water tank, the water inlet of regenerative wastewater are connected with the water outlet of the raw water tank
Electrodialysis process unit, water inlet and the electrodialysis process unit that the concentrated water outlet for the nanofiltration processing unit stated is connected
Concentrated water export the evaporation process unit that is connected, the water outlet of the nanofiltration processing unit is connected with the external world, described
The water outlet of electrodialysis process unit be connected with the water inlet of the nanofiltration processing unit.
In the utility model, in order to make resin regeneration waste water enter nanofiltration processing unit, raw water tank from raw water tank
Water pump is also provided between nanofiltration processing unit.
Specifically, the nanofiltration processing unit is filtered using nanofiltration membrane, and the material of the nanofiltration membrane is polyamides
Amine, the molecular weight of retention are 150-1000Da.
Preferably, the molecular cut off of the nanofiltration membrane is 150-300Da.
Specifically, the resin regeneration waste water is ion exchange resin regeneration high-salt wastewater, and TDS content is 9000-
12000mg/L。
Preferably, the resin regeneration waste water is the acid high-salt wastewater of generation during cation resin regeneration.
Preferably, the soluble inorganic ion of the resin regeneration waste water includes Ca2+、Mg2+、Cl-In it is a variety of.
Specifically, the evaporation process unit includes one or both of multiple-effect evaporation unit, MVR evaporation element.
Specifically, the device further includes the condensing tower being connected with the gas outlet of the evaporation process unit.
Due to the implementation of above technical scheme, the utility model has the advantages that compared with prior art
The utility model reduce final water outlet can with qualified discharge using the device of " nanofiltration+electrodialysis+evaporation "
The discharge amount of sewage, while through pervaporation fractional crystallization, different inorganic salts are obtained, there is certain economic benefit.
Detailed description of the invention
Attached drawing 1 is the flow diagram of the utility model；
Wherein: 1, raw water tank；2, nanofiltration processing unit；3, electrodialysis process unit；4, evaporation process unit；5, water pump.
Specific embodiment
The utility model is described in further details below in conjunction with specific embodiment.It should be understood that these embodiments are to use
In the basic principles and main features and advantage that illustrate the utility model, and the utility model is not limited by the following examples.It is real
Further adjustment can be done according to specific requirement by applying the implementation condition used in example, and the implementation condition being not specified is usually conventional real
Condition in testing.
A kind of processing unit of resin regeneration waste water, including for storing resin regeneration waste water raw water tank 1, water inlet with
Nanofiltration processing unit 2 that the water outlet of raw water tank 1 is connected, water inlet are connected with the outlet of the concentrated water of nanofiltration processing unit 2
Electrodialysis process unit 3, water inlet and electrodialysis process unit 3 concentrated water export the evaporation process unit 4 being connected, at nanofiltration
The water outlet of reason unit 2 is connected with the external world, the water inlet of the water outlet and nanofiltration processing unit 2 of electrodialysis process unit 3
The condensing tower (not shown) that mouth is connected, is connected with the gas outlet of evaporation process unit 4.
In order to make resin regeneration waste water enter nanofiltration processing unit 2 from raw water tank 1, raw water tank 1 and nanofiltration processing are single
Water pump 5 is also provided between member 2.
Resin regeneration waste water is ion exchange resin regeneration high-salt wastewater, and TDS content is 0.9 × 104-1.2×104mg/
L.Resin regeneration waste water in the present embodiment is the acid high-salt wastewater of generation during cation resin regeneration.Resin regeneration
The soluble inorganic ion of waste water includes Ca2+、Mg2+、Cl-In it is a variety of.Solubility in the present embodiment in resin regeneration waste water
Inorganic ions includes Ca2+、Mg2+、Cl-。
Nanofiltration processing unit 2 is filtered using nanofiltration membrane, and the material of nanofiltration membrane is polyamide, and the molecular weight of retention is
150-1000Da, it is preferable that the molecular cut off of nanofiltration membrane is 150-300Da.
Evaporation process unit 4 includes one or both of multiple-effect evaporation unit, MVR evaporation element.
It is explained by taking specific embodiment as an example below.
Embodiment 1:
(a) resin regeneration waste water TDS (total dissolved solidss) content 1.0 × 104Mg/L, resin regeneration waste water is from raw water tank 1
Nanofiltration processing is carried out into nanofiltration processing unit 2, and the material of nanofiltration membrane is polyamide, and the molecular weight of retention is 150Da, at nanofiltration
The pressure 2.0MPa of reason, 35 DEG C of temperature, obtaining TDS content is 5 × 104The nanofiltration concentrated water and TDS content of mg/L is 200 mg/L
Nanofiltration fresh water, nanofiltration fresh water are discharged to the external world；
(b) nanofiltration concentrated water is entered into electrodialysis process unit 3 and carries out electrodialysis concentration, obtained TDS content and reach 16
× 104The electrodialysis concentrated water and TDS content of mg/L is 0.8 × 104The electrodialysis fresh water of mg/L, electrodialysis fresh water return step
(a) it is mixed with resin regeneration waste water；
(c) electrodialysis concentrated water is entered into evaporation process unit 4 and carries out substep evaporative crystallization, obtain calcium chloride product, chlorination
Magnesium products, steam, the TDS content for the condensed water that steam is condensed are 50mg/L, can direct qualified discharge.
Embodiment 2:
(a) resin regeneration waste water TDS (total dissolved solidss) content 1.2 × 104Mg/L, resin regeneration waste water is from raw water tank 1
Nanofiltration processing is carried out into nanofiltration processing unit 2, and the material of nanofiltration membrane is polyamide, and the molecular weight of retention is 150Da, at nanofiltration
The pressure 3.0MPa of reason, 35 DEG C of temperature, obtaining TDS content is 6 × 104The nanofiltration concentrated water and TDS content of mg/L is 250 mg/L
Nanofiltration fresh water, nanofiltration fresh water are discharged to the external world；
(b) nanofiltration concentrated water is entered into electrodialysis process unit 3 and carries out electrodialysis concentration, obtained TDS content and reach 20
×104The electrodialysis concentrated water and TDS content of mg/L is 1.0 × 104The electrodialysis fresh water of mg/L, electrodialysis fresh water return step
(a) it is mixed with resin regeneration waste water；
(c) electrodialysis concentrated water is entered into evaporation process unit 4 and carries out substep evaporative crystallization, obtain calcium chloride product, chlorination
Magnesium products, steam, the TDS content for the condensed water that steam is condensed are 60mg/L, can direct qualified discharge.
Embodiment 3:
(a) resin regeneration waste water TDS (total dissolved solidss) content 0.9 × 104Mg/L, resin regeneration waste water is from raw water tank 1
Nanofiltration processing is carried out into nanofiltration processing unit 2, and the material of nanofiltration membrane is polyamide, and the molecular weight of retention is 300Da, at nanofiltration
The pressure 1.5MPa of reason, 35 DEG C of temperature, obtaining TDS content is 4.5 × 104The nanofiltration concentrated water and TDS content of mg/L is 150mg/
L nanofiltration fresh water, nanofiltration fresh water are discharged to the external world；
(b) nanofiltration concentrated water is entered into electrodialysis process unit 3 and carries out electrodialysis concentration, obtained TDS content and reach 18
×104The electrodialysis concentrated water and TDS content of mg/L is 0.9 × 104The electrodialysis fresh water of mg/L, electrodialysis fresh water return step
(a) it is mixed with resin regeneration waste water；
(c) electrodialysis concentrated water is entered into evaporation process unit 4 and carries out substep evaporative crystallization, obtain calcium chloride product, chlorination
Magnesium products, steam, the TDS content for the condensed water that steam is condensed are 50mg/L, can direct qualified discharge.
Comparative example:
Resin regeneration waste water TDS (total dissolved solidss) content 1.0 × 104Mg/L adds alkali into resin regeneration waste water, obtains
The precipitating of calcium hydroxide and magnesium hydroxide, then filter residue is obtained by plate compression.Since filter residue is calcium hydroxide and magnesium hydroxide
The mixing of precipitating can only be handled as dangerous waste or solid waste, pollute environment；Meanwhile the TDS content of filtrate is 2000mg/L,
It is unable to qualified discharge.
The utility model includes but is not limited to above embodiments, and those skilled in the art can be in the utility model right
Transformation obtains more embodiments in it is required that.
Claims (8)
1. a kind of processing unit of resin regeneration waste water, it is characterised in that: including the raw water tank for storing resin regeneration waste water
(1), nanofiltration processing unit (2), water inlet and the nanofiltration that water inlet is connected with the water outlet of the raw water tank (1)
Electrodialysis process unit (3), water inlet and the electrodialysis process unit that the concentrated water outlet of processing unit (2) is connected
(3) concentrated water exports the evaporation process unit (4) being connected, the water outlet of the nanofiltration processing unit (2) and extraneous phase
Connection, the water outlet of the electrodialysis process unit (3) are connected with the water inlet of the nanofiltration processing unit (2).
2. the apparatus according to claim 1, it is characterised in that: the nanofiltration processing unit (2) is carried out using nanofiltration membrane
Filtering, the material of the nanofiltration membrane are polyamide, and the molecular weight of retention is 150-1000Da.
3. the apparatus of claim 2, it is characterised in that: the molecular cut off of the nanofiltration membrane is 150-300Da.
4. the apparatus according to claim 1, it is characterised in that: the resin regeneration waste water is ion exchange resin regeneration
High-salt wastewater, TDS content are 0.9 × 104-1.2×104mg/L。
5. device according to claim 4, it is characterised in that: the soluble inorganic ion packet of the resin regeneration waste water
Include Ca2+、Mg2+、Cl-In it is a variety of.
6. the apparatus according to claim 1, it is characterised in that: the evaporation process unit (4) includes multiple-effect evaporation list
One or both of member, MVR evaporation element.
7. the apparatus according to claim 1, it is characterised in that: the device further includes that the raw water tank is arranged in
(1) water pump (5) between the nanofiltration processing unit (2).
8. the apparatus according to claim 1, it is characterised in that: the device further includes and the evaporation process unit
(4) condensing tower that gas outlet is connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821055883.6U CN208429992U (en) | 2018-07-05 | 2018-07-05 | A kind of processing unit of resin regeneration waste water |
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| CN201821055883.6U CN208429992U (en) | 2018-07-05 | 2018-07-05 | A kind of processing unit of resin regeneration waste water |
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| CN208429992U true CN208429992U (en) | 2019-01-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623071A (en) * | 2018-07-05 | 2018-10-09 | 苏州聚微环保科技有限公司 | A kind of processing unit and method of resin regeneration waste water |
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- 2018-07-05 CN CN201821055883.6U patent/CN208429992U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108623071A (en) * | 2018-07-05 | 2018-10-09 | 苏州聚微环保科技有限公司 | A kind of processing unit and method of resin regeneration waste water |
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Effective date of registration: 20230411 Address after: 215600 No.1, Fengnan Road, Fenghuang Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: SUZHOU FUMIAO MEMBRANE TECHNOLOGY Co.,Ltd. Address before: No. 1, Fengnan Road, Fenghuang Town, Zhangjiagang City, Suzhou City, Jiangsu Province (Juwei Environmental Protection) Patentee before: SUZHOU JUWEI ENVIRONMENTAL PROTECTION TECHNOLOGY CO.,LTD. |
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