CN205222913U - Recovery system of zero release of high salt waste water and high -purity sodium chloride - Google Patents
Recovery system of zero release of high salt waste water and high -purity sodium chloride Download PDFInfo
- Publication number
- CN205222913U CN205222913U CN201520982031.1U CN201520982031U CN205222913U CN 205222913 U CN205222913 U CN 205222913U CN 201520982031 U CN201520982031 U CN 201520982031U CN 205222913 U CN205222913 U CN 205222913U
- Authority
- CN
- China
- Prior art keywords
- electrodialysis
- crystallization
- chlor
- evaporation
- reverse osmosis
- 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.)
- Active
Links
Abstract
The utility model discloses a recovery system of zero release of high salt waste water and high -purity sodium chloride, recovery system includes pretreatment systems, membrane separation system and evaporation crystal system, pretreatment systems, membrane separation system and evaporation crystal system are arranged in proper order, pretreatment systems is used for carrying out the preliminary treatment to high salt waste water, the membrane separation system is used for carrying out membrane separation processing to the high salt waste water after the preliminary treatment, the evaporation crystal system evaporates the sodium chloride that the crystallization obtained the high -purity to the high salt waste water that comes from the membrane separation system. The concentration of straining separation system afterchlorinate sodium is not high through receiving, and directly entering the electrodialysis system, to carry out concentration uneconomical, goes on with reverse osmosis system earlier that concentrated it is further concentrated to 10~15 percent to enter the electrodialysis system again to original 6~8 times, and the fresh water retrieval and utilization of electrodialysis system is further concentrated to reverse osmosis system, and the concentrate entering of electrodialysis system is evaporated the crystal system and is evaporated the crystallization, obtain the crystal in sodium chloride content be higher than 92 percent.
Description
Technical field
The utility model belongs to Industrial Waste Water Treatments field, relates to the recovery system of a kind of high-salinity wastewater zero-emission and high purity sodium-chlor.
Background technology
In short supply along with industrial expansion and water resources, the factory effluent that part industry produces contains higher salinity, as Cl
-, SO
4 2-, Na
+, Ca
2+plasma, its pollution concentration and quantity discharged present the trend of rising, therefore, have become one of focus of current wastewater treatment to the pure water reuse of high-salt wastewater process and inorganic salt recovery technology.
Known evaporation technique is the effective technology realizing wastewater zero discharge, but evaporative process belongs to phase transition process, and greatly, working cost is high for consumption quantity of steam or current consumption; Adopt single membrane separating method, there is concentration should not be too high, and fouling membrane fouling is serious, and adopts disc tube reverse osmosis (dt-ro) film cost high; Simple employing electrodialysis is not only invested greatly, application fee is high, and there is reuse water and cannot meet up-to-date discharging standards; Just permeating and belonging to new technology in wastewater application, but complex process, technology are immature and energy consumption is higher.
At present, it is extensive that film combined treatment high salinity waste water realizes zero-discharge technology Application comparison, but the inadequate system of integrated artistic, the rate of recovery is not high, reuse water quality is low, it is low to reclaim inorganic salt purity, system energy consumption is high, such as ZL201110225251.6 introduces a kind of calcium chloride wastewater process and reuse method, pretreated waste water is all entered electrodialysis to concentrate, concentrated solution enters evaporation equipment, fresh water is by common reverse osmosis produced Water circulation, it is large that the electrodialysis that technological process is simple concentrates energy consumption, changes film cost intensive.The high salinity zero discharge of industrial waste water technique separately having ZL201310311089.9 to introduce, electrodialysis process is carried out by filtering the concentrated solution repeatedly, material after electrodialysis concentrates carries out evaporating and crystallization, but the salt that this technique obtains is carnallite does not have use value.
Therefore, from cleaner production, watering balance, resource reclaim angle system analysis combination membrane process feature, the comprehensive treating process of high salinity trade effluent is made to have good social and economic effects.
Summary of the invention
The purpose of this utility model is, for the above deficiency existed, to provide the recovery system of a kind of high-salinity wastewater zero-emission and high purity sodium-chlor.
For this reason, the utility model provides following solution:
A recovery system for high-salinity wastewater zero-emission and high purity sodium-chlor, described recovery system comprises pretreatment system, film separating system and evaporation and crystallization system, and described pretreatment system, film separating system and evaporation and crystallization system are arranged successively; Described pretreatment system is used for carrying out pre-treatment to high-salt wastewater; Described film separating system is used for carrying out membrane separation to pretreated high-salt wastewater; Described evaporation and crystallization system is carried out evaporative crystallization for the high-salt wastewater from film separating system and is obtained highly purified sodium-chlor.High-salt wastewater mentioned in context be saltiness higher than 1.5%wt, dissolvability solid amount is higher than the high salinity trade effluent of 15000mg/L.
Further, described film separating system comprises nanofiltration system, reverse osmosis system and electrodialysis system, described nanofiltration system, reverse osmosis system and electrodialysis system are arranged successively, the product water of described nanofiltration system enters reverse osmosis system and carries out reverse-osmosis treated, the dense water of described nanofiltration system enters freezing and crystallizing system and carries out freezing and crystallizing, the dense water of described reverse osmosis system enters electrodialysis system and carries out electrodialysis process, the product Water circulation of described reverse osmosis system, the concentrated solution of described electrodialysis system enters evaporation and crystallization system, the fresh water reuse of described electrodialysis system is to the entrance of reverse osmosis system.
Further, described nanofiltration system is the combination of one-level nanofiltration device or multistage nanofiltration device.
Further, in described electrodialysis system, total dissolved solid is greater than 10%.
Further, described electrodialysis system adopts homogeneous membrane or heterogeneous membrane or half homogeneous membrane.
Further, described pretreatment system comprises dosing and softens clarification system, ozone high grade oxidation system, activated carbon filtration system, ultrafiltration system and resin melded system, and described dosing is softened clarification system, ozone high grade oxidation system, activated carbon filtration system, ultrafiltration system and resin melded system and arranged successively.
Further, described dosing softens in clarification system that to add medicament be one or more combination in alkali, soda ash, flocculation agent.
Further, described resin melded system is one or more the combination in cation bed, weak acid bed, degassing tower.
Further, described evaporation and crystallization system is one or more the combination in MVR evaporation and crystallization system, heterogeneous evaporation and crystallization system and membrane distillation system.
Further, the recycling condensing water of described evaporation and crystallization system.
MVR be mechanical steam recompression technology (
mechanical
vapor
recompression) abbreviation, the secondary steam and energy thereof that utilize vapo(u)rization system self to produce, through vapour compressor compressed action, promote the heat content of secondary steam, lead into cooling tower, the cooling water circulation preheating material of cooling tower, so circulation provides heat energy to vapo(u)rization system, thus reduces a power-saving technology of the demand of the energy to external world.
The utility model provides the recovery system of a kind of high-salinity wastewater zero-emission and high purity sodium-chlor, comprehensively analyzed by Technological Economy, the concentration that nanofiltration system is separated post chlorization sodium is not high, directly entering electrodialysis system carries out concentrated uneconomical, first carry out being concentrated into original 6 ~ 8 times with reverse osmosis system, enter electrodialysis system again and be concentrated into 10 ~ 15% further, the fresh water reuse of electrodialysis system concentrates further to reverse osmosis system, the concentrated solution of electrodialysis system enters evaporation and crystallization system and carries out evaporative crystallization, to obtain in crystal sodium chloride content higher than 97%, reach technical grade requirement, the product water of reverse osmosis system and the equal reuse of water of condensation of evaporation and crystallization system, therefore, the recovery system of the high-salinity wastewater zero-emission provided and high purity sodium-chlor has good social and economic effects.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the recovery system of a kind of high-salinity wastewater zero-emission provided by the utility model and high purity sodium-chlor;
In figure: clarification system is softened in 101-dosing; 102-ozone high grade oxidation system; 103-activated carbon filtration system; 104-ultrafiltration system; 105-resin melded system; 201-nanofiltration system; 202-reverse osmosis system; 203-electrodialysis system; 301-evaporation and crystallization system.
Embodiment
With reference to the drawings and specific embodiments, the utility model is described in detail further.
A recovery system for high-salinity wastewater zero-emission and high purity sodium-chlor, described recovery system comprises pretreatment system, film separating system and evaporation and crystallization system, and described pretreatment system, film separating system and evaporation and crystallization system are arranged successively; Described pretreatment system is used for carrying out pre-treatment to high-salt wastewater; Described film separating system is used for carrying out membrane separation to pretreated high-salt wastewater; Described evaporation and crystallization system is carried out evaporative crystallization for the high-salt wastewater from film separating system and is obtained highly purified sodium-chlor.
Described film separating system comprises nanofiltration system 201, reverse osmosis system 202 and electrodialysis system 203, described nanofiltration system 201, reverse osmosis system 202 and electrodialysis system 203 are arranged successively, the product water of described nanofiltration system 201 enters reverse osmosis system 202 and carries out reverse-osmosis treated, the dense water of described reverse osmosis system 202 enters electrodialysis system 203 and carries out electrodialysis process, the product Water circulation of described reverse osmosis system 202, the concentrated solution of described electrodialysis system 203 enters evaporation and crystallization system, and the fresh water reuse of described electrodialysis system 203 is to the entrance of reverse osmosis system 202.
Described nanofiltration system 201 is the combination of one-level nanofiltration device or multistage nanofiltration device.
In described electrodialysis system 203, total dissolved solid is greater than 10%.
Described electrodialysis system 203 adopts homogeneous membrane or heterogeneous membrane or half homogeneous membrane.
Described pretreatment system comprises dosing and softens clarification system 101, ozone high grade oxidation system 102, activated carbon filtration system 103, ultrafiltration system 104 and resin melded system 105, and described dosing is softened clarification system 101, ozone high grade oxidation system 102, activated carbon filtration system 103, ultrafiltration system 104 and resin melded system 105 and arranged successively.
Described dosing softens in clarification system 101 that to add medicament be one or more combination in alkali, soda ash, flocculation agent.
Described resin melded system 105 is one or more the combination in cation bed, weak acid bed, degassing tower.
Described evaporation and crystallization system 301 is one or more the combination in MVR evaporation and crystallization system, heterogeneous evaporation and crystallization system and membrane distillation system.
Further, the recycling condensing water of described evaporation and crystallization system 301.
Particularly, following technique can be adopted:
With the treatment capacity of 360 tons per hour to each treatment unit design of whole technique and installation and debugging, finally carry out spot testing, pilot plant test carried out to certain high-salt wastewater:
The saltiness 1%wt of certain factory's high-salt wastewater, COD
cr160mg/L, suspended substance are less than 70mg/L, Ca
2+concentration is 360ppm, Mg
2+concentration is 35ppm, and the concentration of silicon is 50ppm, Cl
-concentration is 1800ppm, SO
4 2-concentration is 2540ppm;
Pretreatment system: the high-salt wastewater of 360m3/h is carried out add the coagulating precipitation sofening treatment such as alkali, soda ash, flocculation agent and remove calcium ions and magnesium ions, water outlet Ca
2+, Mg
2+concentration all lower than 50ppm, the concentration of silicon is lower than 5ppm;
Dosing softens the waste water after clarification through ozone high grade oxidation and activated carbon filter, makes COD lower than 80ppm; Be less than 0.5NTU by ultrafiltration system turbidity again, and pass through cation bed, weak acid bed, degassing tower successively to ensure water outlet Ca
2+, Mg
2+, CO
3 2-be less than 5ppm;
Through the high-salt wastewater of pretreatment system process, enter two-stage nanofiltration device, final water production rate 240m3/h, the Cl of its nanofiltration system
-concentration is 1800ppm, SO
4 2-concentration is 5ppm, and the product water of nanofiltration system is entered reverse osmosis system and be separated concentrated; The product water of reverse osmosis system carries out reuse, and the final concentrated stream amount of reverse osmosis system is 35m3/h, saltiness 1.5%wt;
The dense water of reverse osmosis system enters osmosis system and concentrates, the fresh water of osmosis system is got back to reverse osmosis system and is concentrated, the final concentrated solution aquifer yield of electrodialysis system is 3.5m3/h, saltiness 15%wt, the concentrated solution of electrodialysis system is delivered to MVR evaporation and crystallization system and carries out evaporative crystallization, MVR evaporation and crystallization system adopts sub-prime crystallization to extract sodium-chlor, the recycling condensing water of MVR evaporation and crystallization system.
Above-mentioned embodiment is used for explaining and the utility model is described; be only preferred embodiment of the present utility model; instead of the utility model is limited; in the protection domain of spirit of the present utility model and claim; the any amendment made the utility model, equivalent replacement, improvement etc., all fall into protection domain of the present utility model.
Claims (10)
1. a recovery system for high-salinity wastewater zero-emission and high purity sodium-chlor, is characterized in that, described recovery system comprises pretreatment system, film separating system and evaporation and crystallization system, and described pretreatment system, film separating system and evaporation and crystallization system are arranged successively; Described pretreatment system is used for carrying out pre-treatment to high-salt wastewater; Described film separating system is used for carrying out membrane separation to pretreated high-salt wastewater; Described evaporation and crystallization system is carried out evaporative crystallization for the high-salt wastewater from film separating system and is obtained highly purified sodium-chlor.
2. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 1 and high purity sodium-chlor, it is characterized in that, described film separating system comprises nanofiltration system, reverse osmosis system and electrodialysis system, described nanofiltration system, reverse osmosis system and electrodialysis system are arranged successively, the product water of described nanofiltration system enters reverse osmosis system and carries out reverse-osmosis treated, the dense water of described reverse osmosis system enters electrodialysis system and carries out electrodialysis process, the product Water circulation of described reverse osmosis system, the concentrated solution of described electrodialysis system enters evaporation and crystallization system, the fresh water reuse of described electrodialysis system is to the entrance of reverse osmosis system.
3. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 2 and high purity sodium-chlor, is characterized in that, described nanofiltration system is the combination of one-level nanofiltration device or multistage nanofiltration device.
4. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 2 and high purity sodium-chlor, is characterized in that, in described electrodialysis system, total dissolved solid is greater than 10%.
5. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 2 and high purity sodium-chlor, is characterized in that, described electrodialysis system adopts homogeneous membrane or heterogeneous membrane or half homogeneous membrane.
6. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 1 and high purity sodium-chlor, it is characterized in that, described pretreatment system comprises dosing and softens clarification system, ozone high grade oxidation system, activated carbon filtration system, ultrafiltration system and resin melded system, and described dosing is softened clarification system, ozone high grade oxidation system, activated carbon filtration system, ultrafiltration system and resin melded system and arranged successively.
7. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 6 and high purity sodium-chlor, is characterized in that, described dosing softens in clarification system that to add medicament be one or more combination in alkali, soda ash, flocculation agent.
8. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 6 and high purity sodium-chlor, is characterized in that, described resin melded system is one or more the combination in cation bed, weak acid bed, degassing tower.
9. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 1 and high purity sodium-chlor, it is characterized in that, described evaporation and crystallization system is one or more the combination in MVR evaporation and crystallization system, heterogeneous evaporation and crystallization system and membrane distillation system.
10. the recovery system of a kind of high-salinity wastewater zero-emission according to claim 1 and high purity sodium-chlor, is characterized in that, the recycling condensing water of described evaporation and crystallization system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520982031.1U CN205222913U (en) | 2015-12-01 | 2015-12-01 | Recovery system of zero release of high salt waste water and high -purity sodium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520982031.1U CN205222913U (en) | 2015-12-01 | 2015-12-01 | Recovery system of zero release of high salt waste water and high -purity sodium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205222913U true CN205222913U (en) | 2016-05-11 |
Family
ID=55897990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520982031.1U Active CN205222913U (en) | 2015-12-01 | 2015-12-01 | Recovery system of zero release of high salt waste water and high -purity sodium chloride |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205222913U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347594A (en) * | 2015-12-01 | 2016-02-24 | 杭州水处理技术研究开发中心有限公司 | High-salinity wastewater zero emission and high-purity sodium chloride recovering system |
| CN107902800A (en) * | 2017-12-01 | 2018-04-13 | 山东省盐业集团有限公司 | Salt production embrane method sea brine concentration method |
-
2015
- 2015-12-01 CN CN201520982031.1U patent/CN205222913U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105347594A (en) * | 2015-12-01 | 2016-02-24 | 杭州水处理技术研究开发中心有限公司 | High-salinity wastewater zero emission and high-purity sodium chloride recovering system |
| CN107902800A (en) * | 2017-12-01 | 2018-04-13 | 山东省盐业集团有限公司 | Salt production embrane method sea brine concentration method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105347594A (en) | High-salinity wastewater zero emission and high-purity sodium chloride recovering system | |
| CN108249646B (en) | Power plant desulfurization wastewater zero-emission treatment process and device capable of recycling resources | |
| CN105502790B (en) | A kind of desulfurization wastewater treatment system | |
| CN103449653B (en) | Combined treatment method for sodium chloride-containing wastewater generated in dressing and smelting of rare earth | |
| CN110526512B (en) | High-salt high-COD wastewater recovery zero-discharge system and process | |
| JP2018086649A (en) | Method and system for treatment of brine waste water | |
| CN108117207B (en) | Zero-discharge treatment process method for salt-containing wastewater | |
| CN108117206B (en) | Zero-discharge treatment process method for salt-containing wastewater | |
| CN108017213A (en) | A kind of high slat-containing wastewater recycling treatment system and technique | |
| CN114105173B (en) | System and process for extracting lithium from salt lake brine | |
| CN208120896U (en) | Can resource recycling power plant desulfurization wastewater zero discharge treatment device | |
| CN105906128A (en) | Method and system for recovering sodium chloride from high salinity wastewater | |
| CN102030441A (en) | Method for treating wastewater in production of sebacic acid | |
| CN214088118U (en) | Power plant concentrated wastewater zero-emission treatment device | |
| CN108658345A (en) | A kind of method and system of high-salt wastewater purified salt | |
| CN108178408A (en) | A kind of device and method of desulfurization wastewater processing | |
| CN110316897A (en) | A kind of system and method for the full factory waste water zero discharge of power plant and resource utilization | |
| WO2021036406A1 (en) | Zero liquid discharge systems and processes for high-salinity wastewater treatment | |
| CN111170516A (en) | Treatment process and treatment system for desulfurization wastewater | |
| CN205222911U (en) | Zero release of coal industry strong brine and salt manufacturing device | |
| CN205222913U (en) | Recovery system of zero release of high salt waste water and high -purity sodium chloride | |
| CN205347089U (en) | Desulfurization wastewater treatment system | |
| CN204310904U (en) | A kind of system reclaiming salt from Waste Water Treatment | |
| CN112607942A (en) | Seawater recycling treatment system and process | |
| CN105481160B (en) | Method and device for preparing industrial salt by strong brine with zero discharge |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |