CN107698108A - A kind of hydrazine hydrate utilization of wastewater resource device and its technique - Google Patents
A kind of hydrazine hydrate utilization of wastewater resource device and its technique Download PDFInfo
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- CN107698108A CN107698108A CN201711176091.4A CN201711176091A CN107698108A CN 107698108 A CN107698108 A CN 107698108A CN 201711176091 A CN201711176091 A CN 201711176091A CN 107698108 A CN107698108 A CN 107698108A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/34—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis
- C25B1/46—Simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine, e.g. by chlor-alkali electrolysis in diaphragm cells
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
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- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
Abstract
The invention provides a kind of hydrazine hydrate utilization of wastewater resource device, belong to waste water or technical field of sewage, including the raw water box being sequentially connected, flocculation sedimentation tank, purpose ceramic-film filter, nanofilter, triple effect evaporator and ion-exchange membrane electrolyzer, the import connection salt dissolving tank of the ion electrolytic cell, the concentrated water outlet of the nanofilter and the mother liquor outlet of triple effect evaporator are connected with the import of flocculation sedimentation tank, concentrated water circular treatment is without discharge, it is up to standard after biochemical system is handled after the triple effect evaporator steam condensation, it can discharge or reuse, the light salt brine outlet of the ion-exchange membrane electrolyzer is connected with salt dissolving tank, recycling for light salt brine.Present invention also offers the handling process of above-mentioned hydrazine hydrate utilization of wastewater resource device.The present invention combines the characteristics of high saliferous of hydrazine hydrate sewage, high-concentration hardly-degradable, and recycling and the zero-emission of waste water are realized using the ceramic membrane filter technology of independent research.
Description
Technical field
The present invention relates to waste water or technical field of sewage, specifically a kind of hydrazine hydrate utilization of wastewater resource device and
Its technique.
Background technology
Hydrazine hydrate as a kind of important fine chemical material, be mainly used in synthesizing medicine, agricultural chemicals, foaming agent, at cleaning
Manage agent, curing agent etc.；In addition it can also be used to produce rocket fuel, developed dye, rubber chemicals etc..In recent years hydrazine hydrate should
Also constantly expanded with field.The market aggregate demand of current domestic hydrazine hydrate is about at 100,000 tons/year, and with 10% annual growth
Rapid growth.
The most frequently used production method of hydrazine hydrate includes urea method and ketazine process.The principle of ketazine process is existing for ketone
Under the conditions of, sodium hypochlorite and ammonia are reacted, generation ketazine intermediate hydrolyzes to form hydrazine hydrate under elevated pressure conditions.But ketone connects
In the production process of nitrogen legal system hydrazine hydrate produce mass fraction 9%~15% sodium chloride haline water, containing acetone, hydrazine hydrate,
The organic impurities such as ketazine, belong to intractable high salt organic waste water, directly discharge can cause neighbouring soil salinization of soil and
The environmental pollution at water source.And for chlor-alkali enterprises, NaCl is the base stock of chlor-alkali production, if can be by useless Organic substance in water
Remove, NaCl is recycled, and not only eliminates problem of environmental pollution, and is turned waste into wealth, and substantially reduces the production of chlor-alkali enterprises
Cost, realize recycling economy.
Chinese invention patent CN201210525944.1 is provided a kind of handles hydrazine hydrate waste water using evaporative crystallization method
Process, a variety of circular treatments separated by evaporative crystallization, magma, reclaims the inorganic salts in waste water, evaporative crystallization heel row
The waste water gone out is by carrying out Wastewater Treated by Activated Sludge Process after temperature adjustment.Though inorganic salts in the recyclable hydrazine hydrate waste water of the invention, technique
Method is related to the processes such as pre-heating temperature elevation, evaporative crystallization, centrifugation, condensation, temperature adjustment, extremely consumes energy, and salt manufacturing cost is of a relatively high.
Chinese invention patent CN201510122586.3 provides a kind of to hydrazine hydrate high-salt wastewater progress recycling treatment
Process, by using stripping oxidation and microwave catalysis oxidation as the handling process of core, effective oxidation Decomposition and removal
Ammonia nitrogen and organic matter in waste water, make raw materials for production of the waste water after processing as diaphragm process chlor-alkali, realize the resource of waste water
Change and utilize, reduce the production cost of chlor-alkali, reached the processing target of wastewater zero discharge.The invention only exists in experiment and ground at present
Study carefully the stage, it was demonstrated that there is certain feasibility, the condition for not possessing practical application still；And the technique needs a large amount of catalyst, urges
Area for improvement is still suffered from agent component, load capacity and preparation method.
To sum up, recycling economic, practical, efficiently can be carried out to hydrazine hydrate sewage still without a kind of general method at present
Comprehensive utilization.
The content of the invention
In view of this, it is contemplated that overcome the deficiencies in the prior art, there is provided at a kind of hydrazine hydrate utilization of wastewater resource
Manage device.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：A kind of hydrazine hydrate utilization of wastewater resource
Device, including raw water box, flocculation sedimentation tank, purpose ceramic-film filter, nanofilter, triple effect evaporator and the ion being sequentially connected
Membrane electrolysis cells, the flocculation sedimentation tank include flocculation basin and sedimentation basin, and the import connection salt dissolving tank of the ion electrolytic cell is described
The concentrated water outlet of nanofilter and the mother liquor outlet of triple effect evaporator are connected with the import of flocculation sedimentation tank, at concentrated water circulation
Reason is up to standard after biochemical system is handled after the triple effect evaporator steam condensation without discharge, can discharge or reuse, the ionic membrane
The light salt brine outlet of electrolytic cell is connected with salt dissolving tank, the recycling for light salt brine.
Further, intake pump one is provided between the raw water box and flocculation sedimentation tank.
Further, water producing tank one and intake pump two are sequentially provided between the flocculation sedimentation tank and purpose ceramic-film filter.
Further, water producing tank two and high-pressure pump are sequentially provided between the purpose ceramic-film filter and nanofilter.
Further, the production water out of the nanofilter is connected with water producing tank three.
Further, it is provided with agitating device in the flocculation basin.
Further, ceramic membrane filter core is provided with the purpose ceramic-film filter, the aperture of the ceramic membrane filter core is 1~10
μm, the membrane flux of the ceramic membrane filter core is 200~800L (m2·h)-1。
Further, NF membrane is provided with the nanofilter, the aperture of the NF membrane is 1~2nm.
Another object of the present invention is to provide a kind of processing work using above-mentioned hydrazine hydrate utilization of wastewater resource device
Skill.
Using the handling process of above-mentioned hydrazine hydrate utilization of wastewater resource device, comprise the following steps：
(1) sewage is squeezed into flocculation basin, while flocculant is added into flocculation basin, then squeezed into sedimentation basin, in sewage
Suspended impurity, colloid is gathered into bulky grain in sedimentation basin and settles under gravity；
(2) sewage after flocculating setting in the step (1) is squeezed into purpose ceramic-film filter, removes the suspension in sewage
And granule foreign；
(3) sewage after ceramic membrane filter in the step (2) is squeezed into nanofilter, retains the small molecule in sewage
Suspension, granule foreign and high-enriched organics, NF membrane can efficiently separate the monovalent ion in sewage, the concentrated water of nanofiltration retention
It is back to flocculation sedimentation tank, no discharge；
(4) the production water of nanofilter in the step (3) is squeezed into triple effect evaporator, through triple effect evaporator output solid
NaCl, a small amount of mother liquor of triple effect evaporator are back to flocculation sedimentation tank, and no discharge, the steam of triple effect evaporator is after heat exchange condenses
Enter back into biochemical system to be handled, production water can qualified discharge or reuse；
(5) the solid NaCl of the step (4) triple effect evaporator output is dissolved in after water formed NaCl electrolyte enter from
Sub- membrane electrolysis cells, caustic soda, chlorine and hydrogen being generated by cell reaction, light salt brine flows back and mixed with NaCl electrolyte after electrolysis,
Realize the recycling of light salt brine.
Further, the operating pressure of the purpose ceramic-film filter is 0.08~0.15Mpa；The behaviour of the nanofilter
It is 2~4Mpa to make pressure.
Relative to prior art, the present invention has the advantage that：
(1) hydrazine hydrate sewage recycling utilizes the research and development of technology, thoroughly solves high saliferous high-concentration hardly-degradable hydrazine hydrate
The problem that sewage discharge and recycling recycle.
(2) the ceramic membrane filter technology of independent research is used, ceramic membrane has that operating cost is low, membrane lifetime is long, membrane flux
(200~800L (m greatly2·h)-1) etc. advantage, available for large-scale industry wastewater treatment.
(3) solid salt of contained 180000mg/L sodium chloride output after triple effect evaporation is given birth to for electrolysis with ion-exchange film in sewage
Caustic soda is produced, can all recycle, turn waste into wealth, greatly reduce cost of sewage disposal.
(4) nanofiltration to the production water of saturation is available for electrolysis production caustic soda, and technique is simple, and energy consumption is low, and investment and operating cost are low,
And the caustic soda product purity of electrolysis with ion-exchange film production meets national standard.
To sum up, the present invention is directed to the processing bottleneck of hydrazine hydrate sewage, with reference to the high saliferous of hydrazine hydrate sewage, high-concentration hardly-degradable
The characteristics of, research and develop hydrazine hydrate sewage recycling and utilize zero-discharge technology, using the ceramic membrane filter technology of independent research,
With reference to height contained in the flocculation sediment technology of maturation, nanofiltration separation technology, triple effect evaporation, ion-exchange membrane electrolysis recovery waste water
Concentration NaCl (content about 180000mg/L), the raw materials for production after triple effect evaporation after caused solid NaCl salt dissolvings as caustic soda,
Simultaneously can by-product chlorine and hydrogen, realize recycling and the zero-emission of waste water.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is hydrazine hydrate utilization of wastewater resource installation drawing.
Fig. 2 is the process chart of hydrazine hydrate utilization of wastewater resource device.
In figure：1st, raw water box；2nd, flocculation sedimentation tank；21st, flocculation basin；22nd, sedimentation basin；23rd, agitating device；3rd, ceramic membrane mistake
Filter；4th, nanofilter；5th, triple effect evaporator；6th, ion-exchange membrane electrolyzer；7th, intake pump one；8th, water producing tank one；9th, intake pump
Two；10th, water producing tank two；11st, high-pressure pump；12nd, water producing tank three；13rd, biochemical system；14th, salt dissolving tank.
Embodiment
The embodiment of the present invention is described in detail below.It should be appreciated that specific reality described herein
The mode of applying is merely to illustrate and explain the present invention, and is not intended to limit the invention.
Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
Embodiment one
As shown in figure 1, a kind of hydrazine hydrate utilization of wastewater resource device, including raw water box 1, the flocculation sediment being sequentially connected
Pond 2, purpose ceramic-film filter 3, nanofilter 4, triple effect evaporator 5 and ion-exchange membrane electrolyzer 6, flocculation sedimentation tank 2 include flocculation
Pond 21 and sedimentation basin 22, flocculation basin 21 is interior to be provided with agitating device 23, and intake pump one is provided between raw water box 1 and flocculation sedimentation tank 2
7, be sequentially provided with water producing tank 1 and intake pump 29 between flocculation sedimentation tank 2 and purpose ceramic-film filter 3, purpose ceramic-film filter 3 with
Water producing tank 2 10 and high-pressure pump 11, production water out and the water producing tank 3 12 of nanofilter 4 are sequentially provided between nanofilter 4
It is connected, ceramic membrane filter core is provided with purpose ceramic-film filter 3, the aperture of ceramic membrane filter core is 1~10 μm, the film of ceramic membrane filter core
Flux is 200~800L (m2·h)-1, it is provided with NF membrane in nanofilter 4, the aperture of NF membrane is 1~2nm, ion-conductance
Solve the import connection salt dissolving tank 14 of groove 6, the concentrated water outlet of nanofilter 4 and the mother liquor outlet of triple effect evaporator 5 and flocculation is heavy
The import in shallow lake pond 2 is connected, and concentrated water circular treatment is without discharge, after the condensation of the steam of triple effect evaporator 5 after the processing of biochemical system 13
It is up to standard, it can discharge or reuse, the light salt brine outlet of ion-exchange membrane electrolyzer 6 are connected with salt dissolving tank 14, the circulation for light salt brine
Use.
Embodiment two
As shown in Fig. 2 a kind of handling process of hydrazine hydrate utilization of wastewater resource device, comprises the following steps：
(1) sewage in raw water box is squeezed into the flocculation basin with agitating device with intake pump one, while into flocculation basin
Flocculant PAC is added, addition concentration is 50000mg/L, is then squeezed into sedimentation basin, and the suspended impurity, colloid in sewage are heavy
Bulky grain is gathered into the pond of shallow lake and is settled under gravity；
(2) sewage after flocculating setting in the step (1) is entered into water producing tank one, ceramic membrane mistake is squeezed into intake pump two
Filter, the aperture of ceramic membrane filter core is 2 μm, and the membrane flux of ceramic membrane filter core is 250L (m2·h)-1, operating pressure is
0.08MPa, remove suspension and granule foreign in sewage；
(3) sewage after ceramic membrane filter in the step (2) is entered into water producing tank two, nanofiltration filtering is squeezed into high-pressure pump
Device, the aperture of NF membrane is about 1nm, operating pressure 2.5MPa, retains small molecule suspension, granule foreign and the height in sewage
Concentration organic, NF membrane can efficiently separate the monovalent ion in sewage, the concentrate recirculation that nanofiltration retains to flocculation sedimentation tank, nothing
Discharge；
(4) the production water of nanofilter in the step (3) is squeezed into triple effect evaporator, each effect evaporator operating mode is as follows：
One effect steam pressure 0.35MPa, vapor (steam) temperature are 140 DEG C；Two effect steam pressure 0.143MPa, vapor (steam) temperature are 110 DEG C；Triple effect
Steam pressure 0.06MPa, vapor (steam) temperature are 85 DEG C；Through triple effect evaporator output solid NaCl, a small amount of mother liquor of triple effect evaporator
Flocculation sedimentation tank, no discharge are back to, the steam of triple effect evaporator enters back into biochemical system after heat exchange condenses and handled, produced
Water can qualified discharge or reuse；
(5) the solid NaCl of the step (4) triple effect evaporator output is dissolved in after water formed NaCl electrolyte enter from
Sub- membrane electrolysis cells, cell current are adjusted to 10A, and voltage maintains 3.5~3.6V, and measure voltage is 3.3V, is generated by cell reaction
Caustic soda, chlorine and hydrogen, light salt brine COD is 26mg/L after electrolysis, and light salt brine flows back and mixed with NaCl electrolyte after electrolysis, is realized
The recycling of light salt brine.
Embodiment three
As shown in Fig. 2 a kind of handling process of hydrazine hydrate utilization of wastewater resource device, comprises the following steps：
(1) sewage in raw water box is squeezed into the flocculation basin with agitating device with intake pump one, while into flocculation basin
Flocculant PAM is added, addition concentration is 80mg/L, is then squeezed into sedimentation basin, and the suspended impurity, colloid in sewage are in sedimentation basin
In be gathered into bulky grain and settle under gravity；
(2) sewage after flocculating setting in the step (1) is entered into water producing tank one, ceramic membrane mistake is squeezed into intake pump two
Filter, the aperture of ceramic membrane filter core is 7 μm, and the membrane flux of ceramic membrane filter core is 450L (m2·h)-1, operating pressure is
0.15MPa, remove suspension and granule foreign in sewage；
(3) sewage after ceramic membrane filter in the step (2) is entered into water producing tank two, nanofiltration filtering is squeezed into high-pressure pump
Device, the aperture of NF membrane are about 1.5nm, operating pressure 3.5MPa, retain small molecule suspension in sewage, granule foreign and
High-enriched organics, NF membrane can efficiently separate the monovalent ion in sewage, the concentrate recirculation of nanofiltration retention to flocculation sedimentation tank,
Without discharge；
(4) the production water of nanofilter in the step (3) is squeezed into triple effect evaporator, each effect evaporator operating mode is as follows：
One effect steam pressure 0.35MPa, vapor (steam) temperature are 139 DEG C；Two effect steam pressure 0.175MPa, vapor (steam) temperature are 116 DEG C；Triple effect
Steam pressure 0.082MPa, vapor (steam) temperature are 94 DEG C；Through triple effect evaporator output solid NaCl, a small amount of mother liquor of triple effect evaporator
Flocculation sedimentation tank, no discharge are back to, the steam of triple effect evaporator enters back into biochemical system after heat exchange condenses and handled, produced
Water can qualified discharge or reuse；
(5) the solid NaCl of the step (4) triple effect evaporator output is dissolved in after water formed NaCl electrolyte enter from
Sub- membrane electrolysis cells, cell current are adjusted to 10A, and voltage maintains 3.5~3.6V, and measure voltage is 3.4V, is generated by cell reaction
Caustic soda, chlorine and hydrogen, light salt brine COD is 25mg/L after electrolysis, and light salt brine flows back and mixed with NaCl electrolyte after electrolysis, is realized
The recycling of light salt brine.
Example IV
As shown in Fig. 2 a kind of handling process of hydrazine hydrate utilization of wastewater resource device, comprises the following steps：
(1) sewage in raw water box is squeezed into the flocculation basin with agitating device with intake pump one, while into flocculation basin
Flocculant PAM is added, addition concentration is 100mg/L, is then squeezed into sedimentation basin, and the suspended impurity, colloid in sewage are precipitating
Bulky grain is gathered into pond and is settled under gravity；
(2) sewage after flocculating setting in the step (1) is entered into water producing tank one, ceramic membrane mistake is squeezed into intake pump two
Filter, the aperture of ceramic membrane filter core is 10 μm, and the membrane flux of ceramic membrane filter core is 800L (m2·h)-1, operating pressure is
0.12MPa, remove suspension and granule foreign in sewage；
(3) sewage after ceramic membrane filter in the step (2) is entered into water producing tank two, nanofiltration filtering is squeezed into high-pressure pump
Device, the aperture of NF membrane is about 2nm, operating pressure 3.5MPa, retains small molecule suspension, granule foreign and the height in sewage
Concentration organic, NF membrane can efficiently separate the monovalent ion in sewage, the concentrate recirculation that nanofiltration retains to flocculation sedimentation tank, nothing
Discharge；
(4) the production water of nanofilter in the step (3) is squeezed into triple effect evaporator, each effect evaporator operating mode is as follows：
One effect steam pressure 0.37MPa, vapor (steam) temperature are 141 DEG C；Two effect steam pressure 0.178MPa, vapor (steam) temperature are 112 DEG C；Triple effect
Steam pressure 0.072MPa, vapor (steam) temperature are 90 DEG C；Through triple effect evaporator output solid NaCl, a small amount of mother liquor of triple effect evaporator
Flocculation sedimentation tank, no discharge are back to, the steam of triple effect evaporator enters back into biochemical system after heat exchange condenses and handled, produced
Water can qualified discharge or reuse；
(5) the solid NaCl of the step (4) triple effect evaporator output is dissolved in after water formed NaCl electrolyte enter from
Sub- membrane electrolysis cells, cell current are adjusted to 10A, and voltage maintains 3.5~3.6V, and measure voltage is 3.3V, is generated by cell reaction
Caustic soda, chlorine and hydrogen, light salt brine COD is 24mg/L after electrolysis, and light salt brine flows back and mixed with NaCl electrolyte after electrolysis, is realized
The recycling of light salt brine.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
- A kind of 1. hydrazine hydrate utilization of wastewater resource device, it is characterised in that：Including raw water box, the flocculation sediment being sequentially connected Pond, purpose ceramic-film filter, nanofilter, triple effect evaporator and ion-exchange membrane electrolyzer, the flocculation sedimentation tank include flocculation basin And sedimentation basin, the import connection salt dissolving tank of the ion electrolytic cell, the concentrated water outlet of the nanofilter and triple effect evaporator Mother liquor outlet be connected with the import of flocculation sedimentation tank, concentrated water circular treatment is without discharge, the triple effect evaporator steam condensation It is up to standard after being handled by biochemical system, it can discharge or reuse, the light salt brine outlet of the ion-exchange membrane electrolyzer are connected with salt dissolving tank Connect, the recycling for light salt brine.
- 2. hydrazine hydrate utilization of wastewater resource device according to claim 1, it is characterised in that：The raw water box and flocculation Intake pump one is provided between sedimentation basin.
- 3. hydrazine hydrate utilization of wastewater resource device according to claim 2, it is characterised in that：The flocculation sedimentation tank and Water producing tank one and intake pump two are sequentially provided between purpose ceramic-film filter.
- 4. hydrazine hydrate utilization of wastewater resource device according to claim 3, it is characterised in that：The purpose ceramic-film filter Water producing tank two and high-pressure pump are sequentially provided between nanofilter.
- 5. hydrazine hydrate utilization of wastewater resource device according to claim 4, it is characterised in that：The nanofilter Production water out is connected with water producing tank three.
- 6. hydrazine hydrate utilization of wastewater resource device according to claim 5, it is characterised in that：It is provided with the flocculation basin Agitating device.
- 7. hydrazine hydrate utilization of wastewater resource device according to claim 1, it is characterised in that：The purpose ceramic-film filter Interior to be provided with ceramic membrane filter core, the aperture of the ceramic membrane filter core is 1~10 μm, the membrane flux of the ceramic membrane filter core for 200~ 800L·(m2·h)-1。
- 8. hydrazine hydrate utilization of wastewater resource device according to claim 1, it is characterised in that：In the nanofilter Provided with NF membrane, the aperture of the NF membrane is 1~2nm.
- 9. a kind of handling process of hydrazine hydrate utilization of wastewater resource device using described in any one of claim 1~8, it is special Sign is：Comprise the following steps：(1) sewage is squeezed into flocculation basin, while flocculant is added into flocculation basin, then squeezed into sedimentation basin, it is outstanding in sewage Floating impurity, colloid are gathered into bulky grain in sedimentation basin and settled under gravity；(2) sewage after flocculating setting in the step (1) is squeezed into purpose ceramic-film filter, remove suspension in sewage and Grain impurity；(3) sewage after ceramic membrane filter in the step (2) is squeezed into nanofilter, the small molecule retained in sewage suspends Thing, granule foreign and high-enriched organics, NF membrane can efficiently separate the monovalent ion in sewage, the concentrate recirculation of nanofiltration retention To flocculation sedimentation tank, no discharge；(4) the production water of nanofilter in the step (3) is squeezed into triple effect evaporator, through triple effect evaporator output solid NaCl, a small amount of mother liquor of triple effect evaporator are back to flocculation sedimentation tank, and no discharge, the steam of triple effect evaporator is after heat exchange condenses Enter back into biochemical system to be handled, production water can qualified discharge or reuse；(5) formation NaCl electrolyte enters ionic membrane after the solid NaCl of the step (4) triple effect evaporator output being dissolved in into water Electrolytic cell, caustic soda, chlorine and hydrogen are generated by cell reaction, light salt brine flows back and mixed with NaCl electrolyte after electrolysis, realizes The recycling of light salt brine.
- 10. the handling process of hydrazine hydrate utilization of wastewater resource device according to claim 9, it is characterised in that：It is described The operating pressure of purpose ceramic-film filter is 0.08~0.15Mpa；The operating pressure of the nanofilter is 2~4Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711176091.4A CN107698108A (en) | 2017-11-22 | 2017-11-22 | A kind of hydrazine hydrate utilization of wastewater resource device and its technique |
Applications Claiming Priority (1)
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| CN109179831A (en) * | 2018-09-05 | 2019-01-11 | 江苏索普化工股份有限公司 | A kind of processing method of ketazine legal system hydrazine high-salt wastewater |
| CN113105058A (en) * | 2021-04-23 | 2021-07-13 | 广东闻扬环境科技有限公司 | Seawater desalination zero-emission and resource recycling process |
| CN115849601A (en) * | 2022-11-25 | 2023-03-28 | 江苏南大华兴环保科技股份公司 | Ionic membrane electrolysis pretreatment process for preparing hydrazine hydrate high-salt wastewater by ketazine method |
| CN116282688A (en) * | 2023-02-28 | 2023-06-23 | 大唐环境产业集团股份有限公司 | System and method for recycling urea hydrolysis wastewater |
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| CN107721023A (en) * | 2017-11-22 | 2018-02-23 | 天津海泽惠科技发展有限公司 | A kind of hydrazine hydrate wastewater treatment equipment and its technique |
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| CN115849601B (en) * | 2022-11-25 | 2023-10-24 | 江苏南大华兴环保科技股份公司 | Ionic membrane electrolysis pretreatment process for preparing hydrazine hydrate high-salt wastewater by ketone continuous nitrogen method |
| CN116282688A (en) * | 2023-02-28 | 2023-06-23 | 大唐环境产业集团股份有限公司 | System and method for recycling urea hydrolysis wastewater |
| CN116282688B (en) * | 2023-02-28 | 2023-10-27 | 大唐环境产业集团股份有限公司 | System and method for recycling urea hydrolysis wastewater |
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