CN205710215U - A kind of strong brine step processing equipment for recycling - Google Patents
A kind of strong brine step processing equipment for recycling Download PDFInfo
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- CN205710215U CN205710215U CN201620277440.6U CN201620277440U CN205710215U CN 205710215 U CN205710215 U CN 205710215U CN 201620277440 U CN201620277440 U CN 201620277440U CN 205710215 U CN205710215 U CN 205710215U
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Abstract
The utility model discloses a kind of strong brine step processing equipment for recycling, this device includes: monovalent ion film salt segregation apparatus, has water inlet, dense water out and water outlet；First Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described monovalent ion film salt segregation apparatus；Specific Ion film salt enrichment facility, its water inlet connects the water outlet of described monovalent ion film salt segregation apparatus；Second Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described Specific Ion film salt enrichment facility；Photocatalytic oxidation device, its water inlet connects the water outlet of described Specific Ion film salt enrichment facility.This utility model truly can realize the zero-emission of water and solid waste, becomes danger and gives up as resource, reaches cleaning and produces, recycles and the purpose of step resource.
Description
Technical field
This utility model belongs to waste water zero-discharge technology field, more particularly, it relates to the strong brine step processing equipment for recycling in environment-friendly engineering zero-discharge technology field.
Background technology
Coal Chemical Industry and other chemical enterprises and the fast development of equal energy source enterprise of power plant, commercial production water consumption is very big, produces substantial amounts of high strong brine simultaneously, water environment causes more serious pollution.High strong brine salinity is up to 30000 ~ 100000
Mg/L, mainly containing Na+、K+、Ca2+、Mg2+、Al3+、SO4 2-、Cl-、NO3 -、NO2 -Plasma, easily causes fouling, occluding device, and organism kinds is many, and content is high.
The mode of the zero-emission of the strong brine of relatively mature and reliable is to use reverse osmosis membrane to be concentrated by salt then to carry out crystallizing salt manufacturing by vaporizer or crystallizer the most both at home and abroad.Reverse osmosis membrane and crystallizer require height to influent quality, and investment is big, and operating cost is high.The zero-emission of conventional high strong brine is simply concentrated the pollutant being dissolved in waste water further, and be converted to from system in solid form, in whole technical process, pollutant do not obtain minimizing and process, but are another kind form pollutant from a kind of form transformation.The solid constituent produced is complicated, processes only as danger is useless, and method of disposal is improper, it is also possible to can cause secondary pollution.
Utility model content
For solving problem present in above-mentioned conventional art, the purpose of this utility model is to provide a kind of strong brine step resource (BCU) combination unit and technique.For main component and the water quality characteristics (TDS > 30000mg/l) of strong brine, sub-prime reclaims magnesium salt, calcium salt, the dense saline solution of sodium chloride, the dense saline solution of sodium sulfate, hydrochloric acid, sulphuric acid, sodium hydroxide, middle water etc. step by step, then carries out step recycling.Truly realizing the zero-emission of water and solid waste, becoming danger and give up as resource, reaching cleaning and produce, recycle and the purpose of step resource.
A kind of strong brine step processing equipment for recycling that this utility model provides, including:
Monovalent ion film salt segregation apparatus, has water inlet, dense water out and water outlet；
First Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described monovalent ion film salt segregation apparatus；
Specific Ion film salt enrichment facility, its water inlet connects the water outlet of described monovalent ion film salt segregation apparatus；
Second Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described Specific Ion film salt enrichment facility；
Photocatalytic oxidation device, its water inlet connects the water outlet of described Specific Ion film salt enrichment facility.
Preferably, above-mentioned strong brine step processing equipment for recycling, also include strong brine softening plant, sodium bed and the accurate filter being sequentially connected with by pipeline, wherein the outlet of accurate filter connects the water inlet of described monovalent ion film salt segregation apparatus.
Preferably, described strong brine softening plant includes one-level softening plant and secondary softening device, described one-level softening plant is high-efficiency clarifier, described secondary softening device includes tiny flocculation device and tubular type micro-filtration, the outlet of described high-efficiency clarifier connects the water inlet of described tiny flocculation device, the outlet of described tiny flocculation device connects the water inlet of described tubular type micro-filtration, and the outlet of described tubular type micro-filtration connects the water inlet of sodium bed.
Preferably, above-mentioned strong brine step processing equipment for recycling, also include the first sheet frame dewatering system, it connects the solid-phase outlet of described high-efficiency clarifier.
Preferably, described high-efficiency clarifier includes flocculation zone and the settling zone of connection, and described settling zone is provided with solid-phase outlet.
Preferably, above-mentioned strong brine step processing equipment for recycling, also include the second sheet frame dewatering system, it connects the solid-phase outlet of described tubular type micro-filtration.
Preferably, the dense water out of described Specific Ion film salt enrichment facility is connected with described tiny flocculation device.
This utility model owing to have employed said structure, one-level softening plant reclaim magnesium salt, can sell for aspects such as heavy metal removing, decolorizing printing and dyeing waste water, flue gas desulfurizations；Secondary softening device reclaims calcium carbonate, can be used for the aspect such as extender of flue gas desulfurization, nertralizer or catalyst, controlling the water circulation mud；Sodium bed regenerated liquid is made in the sodium chloride dense saline solution part reuse of monovalent ion film salt segregation apparatus dense water side;Bipolar membrane electrodialysis antacid alkali device reclaims after processing and obtains sodium hydroxide, hydrochloric acid and sulphuric acid, can use by oneself or sell as the raw material of industry by on-site；Part sodium hydroxide can be back to the softening medicament of one-level softening plant in this group technology；The dense saline solution of part of sulfuric acid sodium of the dense water side of Specific Ion film salt enrichment facility can be back to the softening medicament of secondary softening device；The water outlet of photocatalytic oxidation device enters circulating cooling make-up water reclaiming system, recycling after collaborative process as middle water.After carrying out sub-prime recovery for the composition of strong brine, it is achieved cleaning produces, recycles and the purpose of step resource.
Accompanying drawing explanation
Fig. 1 is strong brine step processing equipment for recycling schematic diagram of the present utility model.
Detailed description of the invention
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art can be better understood from this utility model and can be practiced, but illustrated embodiment is not as to restriction of the present utility model.
As it is shown in figure 1, strong brine step processing equipment for recycling of the present utility model, including:
One-level softening plant, it is high-efficiency clarifier 1, and high-efficiency clarifier 1 includes flocculation zone 100 and the settling zone 110 of connection, and settling zone 110 is provided with solid-phase outlet.
Secondary softening device, it includes tiny flocculation device 2 and tubular type micro-filtration 3, and the outlet of high-efficiency clarifier 1 connects the water inlet of tiny flocculation device 2, the water inlet of the outlet connecting tube formula micro-filtration 3 of tiny flocculation device,
Sodium bed 4, the outlet of the water inlet connecting tube formula micro-filtration 3 of sodium bed；
Accurate filter 5, its water inlet connects the outlet of sodium bed 4；
Monovalent ion film salt segregation apparatus 6, has water inlet, dense water out and water outlet, and its water inlet connects the outlet of accurate filter 5；
First Acid-And Base-making By Bipolar Membrane device 7, its water inlet connects the dense water out of monovalent ion film salt segregation apparatus 6；
Specific Ion film salt enrichment facility 8, its water inlet connects the water outlet of monovalent ion film salt segregation apparatus 6；
Second Acid-And Base-making By Bipolar Membrane device 9, its water inlet connects the dense water out of Specific Ion film salt enrichment facility 8；
Photocatalytic oxidation device 10, its water inlet connects the water outlet of Specific Ion film salt enrichment facility 8；
First sheet frame dewatering system 11, it connects the solid-phase outlet of high-efficiency clarifier 1；
Second sheet frame dewatering system 12, the solid-phase outlet of its connecting tube formula micro-filtration 3.
Wherein, the dense water out of Specific Ion film salt enrichment facility 8 is connected (not shown) with tiny flocculation device 2, with partial reflux.
During strong brine step processing equipment for recycling of the present utility model work, strong brine is delivered to one-level softening plant after reconciling water quality and quantity, one-level softening plant uses high-efficiency clarifier 1, sodium hydroxide or Calx (can be to come from the first Acid-And Base-making By Bipolar Membrane device 7 or the alkali liquor of the second Acid-And Base-making By Bipolar Membrane device 8 preparation) is added in the flocculation zone of high-efficiency clarifier, with magnesium ion in water, heavy metal, the substance reactions such as silicon dioxide generate precipitate, add PAM the most again, PAC, accelerate the growth of flco, the mud simultaneously relying on backflow forms heteronuclear crystalline, the final separation realizing solid-liquid in the settling zone of high efficiency clarification tank 1.The mud of precipitate and separate enters the first sheet frame dewatering system 11 and is dehydrated recovery and obtains magnesium salt, can sell for aspects such as heavy metal removing, decolorizing printing and dyeing waste water, flue gas desulfurizations, or collaborative with the grey storehouse of on-site processes.The supernatant of one-level softening plant is connected with secondary softening device, secondary softening device uses tiny flocculation device 2 and the group technology of tubular type micro-filtration 3, the dense saline solution of sodium sulfate of the dense water side of Specific Ion film salt enrichment facility 8 of sodium carbonate or backflow is added in tiny flocculation device 2, aluminum chloride or a combination thereof, formation calcium carbonate is reacted with the calcium ion in water, calcium sulfate or the precipitate of entringite, then the tube type filter membrance utilizing tubular type micro-filtration 3 realizes good solid-liquid separation under high concentration suspended solid, realizing recovery calcium salt (calcium carbonate, calcium sulfate) while, the composition being easily caused subsequent technique fouling is effectively removed, to ensure that the good of subsequent technique runs and high-recovery.The water outlet calcium ion of tubular type micro-filtration 3, magnesium ion are respectively smaller than 50mg/l, and turbidity is less than 1NTU.After the calcium carbonate of precipitation, the mixing sludge of calcium sulfate enter the second sheet frame dehydration device 12 filter-press dehydration, moisture content is less than 60%, it is achieved the recovery of calcium carbonate, reuse can do the medicament of flue gas desulphurization system, ultimately form and sell outside Gypsum Fibrosum.The water outlet of secondary softening device is connected with sodium bed 4, the scale-forming ions such as the calcium of residual, magnesium are removed in water further by sodium form ion exchange resin, guarantee that in water, hardness is close to zero, it is ensured that the stable operation of subsequent process unit, improve the purity of the dense saline solution of sodium chloride prepared by subsequent process unit.The water outlet of sodium bed 4 is connected with accurate filter 5, removes some small granular suspended matters further by accurate filter 5, prevents from follow-up equipment is produced impact.Accurate filter 5 filtering accuracy is 5 μm.The water outlet of accurate filter 5 is connected with monovalent ion film salt segregation apparatus 6, carries out sodium chloride by monovalent ion film salt segregation apparatus 6 and separates with sodium sulfate, Organic substance and the separation of inorganic salt.The dense water side of monovalent ion film salt segregation apparatus 6 obtains the dense saline solution of highly purified NaCl (TDS > 150g/l, NaCl purity > 95%), the regeneration of the sodium bed 4 that the dense saline solution of part is back in this group technology.The dense water side of monovalent ion film salt segregation apparatus 6 is connected with the first Acid-And Base-making By Bipolar Membrane device 7, after the both sides of Bipolar Membrane apply the water theory decomposition voltage of more than 0.83V, water decomposition in film is acid (H+) and alkali (OH-), in bipolar membrane electrodialysis groove, the dense saline solution of sodium chloride is under electric field action, anion (Cl-) generates acid (HCl) after combining with the H ion (H+) divided in Bipolar Membrane through anion exchange membrane. generate alkali (NaOH) through cation exchange membrane after on the other hand cation (Na+) combines with the OH ion (OH-) divided in Bipolar Membrane, thus realize the recovery of sodium hydroxide and hydrochloric acid, plant area can use by oneself or sell outward.The dilute side of monovalent ion film salt segregation apparatus 6 is connected with Specific Ion film salt enrichment facility 8.Realized the concentration (TDS > 180g/l, NaCl purity > 75%) of sodium sulfate by Specific Ion film salt enrichment facility 8, realize salinity and organic separation simultaneously, put forward highly-saline purity.The dense water side of Specific Ion film salt enrichment facility 8 is connected with the second Acid-And Base-making By Bipolar Membrane device 9, after the both sides of Bipolar Membrane apply the water theory decomposition voltage of more than 0.83V, water decomposition in film is acid (H+) and alkali (OH-), in bipolar membrane electrodialysis groove, the dense saline solution of sodium sulfate is under electric field action, anion (SO4 2-) in Bipolar Membrane, generate acid (H with after H ion (H+) combination divided through anion exchange membrane2SO4).
On the other hand generate alkali (NaOH) after cation (Na+) combines with the OH ion (OH-) divided through cation exchange membrane in Bipolar Membrane, thus realize the recovery of sodium hydroxide and sulphuric acid, plant area can use by oneself or sell outward.The dilute side of Specific Ion film salt enrichment facility 8 is connected with photocatalytic oxidation device 10, removal organic polluter (TDS < 10g/l is removed by photocatalytic oxidation device 10, COD < 50mg/l), enter circulating cooling make-up water reclaiming system, recycling after collaborative process as middle water.Photocatalytic oxidation device 10 also can use the group technology (not shown) of catalytic ozonation and BAF.
In sum, the magnesium salt that one-level softening plant reclaims, can sell for aspects such as heavy metal removing, decolorizing printing and dyeing waste water, flue gas desulfurizations；Secondary softening device reclaims calcium carbonate, can be used for the aspect such as flue gas desulfurization, nertralizer or catalyst, controlling the water circulation mud；Sodium bed 4 regenerated liquid is made in the sodium chloride dense saline solution part reuse of the dense water side of monovalent ion film salt segregation apparatus 6;First and second Acid-And Base-making By Bipolar Membrane devices 7 reclaim after processing and obtain sodium hydroxide, hydrochloric acid and sulphuric acid, can use by oneself or sell as the raw material of industry by on-site；Part sodium hydroxide can be back to the softening medicament of one-level softening plant in this group technology；The dense saline solution of part of sulfuric acid sodium of the dense water side of Specific Ion film salt enrichment facility 8 can be back to the softening medicament of secondary softening device；The water outlet of photocatalytic oxidation device 9 enters circulating cooling make-up water reclaiming system, recycling after collaborative process as middle water.After carrying out sub-prime recovery for the composition of strong brine, it is achieved cleaning produces, recycles and the purpose of step resource.
This utility model is by reclaiming magnesium salt, calcium salt, the dense saline solution of sodium chloride, the dense saline solution of sodium sulfate, hydrochloric acid, sulphuric acid, sodium hydroxide, middle water etc., material composition in strong brine is reclaimed one by one, it is back to this device or sells as the raw material of industry, achieve the zero-emission of strong brine and solid waste, and realize the recycling of all recovery materials, it is that strong brine treatment plant becomes a resource reclaim factory, become danger and give up as resource, reach cleaning and produce, recycle and the purpose of step resource.
Above content is to combine the further description that concrete preferred embodiment is made, it is impossible to assert that this utility model is embodied as being confined to these explanations above-mentioned.For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple modifications or replacement, all should be considered as belonging to protection domain of the present utility model.
Claims (7)
1. a strong brine step processing equipment for recycling, it is characterised in that including:
Monovalent ion film salt segregation apparatus, has water inlet, dense water out and water outlet；
First Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described monovalent ion film salt segregation apparatus；
Specific Ion film salt enrichment facility, its water inlet connects the water outlet of described monovalent ion film salt segregation apparatus；
Second Acid-And Base-making By Bipolar Membrane device, its water inlet connects the dense water out of described Specific Ion film salt enrichment facility；
Photocatalytic oxidation device, its water inlet connects the water outlet of described Specific Ion film salt enrichment facility.
Strong brine step processing equipment for recycling the most according to claim 1, it is characterized in that, also including strong brine softening plant, sodium bed and the accurate filter being sequentially connected with by pipeline, wherein the outlet of accurate filter connects the water inlet of described monovalent ion film salt segregation apparatus.
Strong brine step processing equipment for recycling the most according to claim 2, it is characterised in that described strong brine softening plant includes one-level softening plant and secondary softening device,
Described one-level softening plant is high-efficiency clarifier, described secondary softening device includes tiny flocculation device and tubular type micro-filtration, the outlet of described high-efficiency clarifier connects the water inlet of described tiny flocculation device, the outlet of described tiny flocculation device connects the water inlet of described tubular type micro-filtration, and the outlet of described tubular type micro-filtration connects the water inlet of sodium bed.
Strong brine step processing equipment for recycling the most according to claim 3, it is characterised in that also include the first sheet frame dewatering system, it connects the solid-phase outlet of described high-efficiency clarifier.
Strong brine step processing equipment for recycling the most according to claim 4, it is characterised in that described high-efficiency clarifier includes flocculation zone and the settling zone of connection, and described settling zone is provided with solid-phase outlet.
Strong brine step processing equipment for recycling the most according to claim 3, it is characterised in that also include the second sheet frame dewatering system, it connects the solid-phase outlet of described tubular type micro-filtration.
Strong brine step processing equipment for recycling the most according to claim 3, it is characterised in that the dense water out of described Specific Ion film salt enrichment facility is connected with described tiny flocculation device.
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| CN201620277440.6U CN205710215U (en) | 2016-04-06 | 2016-04-06 | A kind of strong brine step processing equipment for recycling |
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| CN201620277440.6U CN205710215U (en) | 2016-04-06 | 2016-04-06 | A kind of strong brine step processing equipment for recycling |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858981A (en) * | 2016-04-06 | 2016-08-17 | 北京高能时代环境技术股份有限公司 | Quality-divided reclamation treatment device and process for strong brine |
| CN113979576A (en) * | 2021-12-28 | 2022-01-28 | 杭州水处理技术研究开发中心有限公司 | Resource treatment method and system for high-salinity mixed salt concentrated water |
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2016
- 2016-04-06 CN CN201620277440.6U patent/CN205710215U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105858981A (en) * | 2016-04-06 | 2016-08-17 | 北京高能时代环境技术股份有限公司 | Quality-divided reclamation treatment device and process for strong brine |
| CN113979576A (en) * | 2021-12-28 | 2022-01-28 | 杭州水处理技术研究开发中心有限公司 | Resource treatment method and system for high-salinity mixed salt concentrated water |
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