CN103910459B - A kind of coal chemical sewage recycling and the method and apparatus of zero-emission - Google Patents
A kind of coal chemical sewage recycling and the method and apparatus of zero-emission Download PDFInfo
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- Physical Water Treatments (AREA)
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- Separation Using Semi-Permeable Membranes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The present invention proposes a kind of coal chemical sewage recycling and the method and apparatus of zero-emission, including：Oil interceptor；Ultra micro air-floating apparatus, is connected with oil interceptor；Multistage A/O systems, including：Anaerobic zone, is connected with ultra micro air-floating apparatus；Aerobic zone, is connected with anaerobic zone；Settling zone, is connected with anaerobic zone；Stable region, is connected with settling zone；Membrane filtration system, is connected with stable region and anaerobic zone；Super effect counter-infiltration system, including：Hardness removal device, is connected with membrane filtration system；Dissolved gas removing means, is connected with hardness removal device；Film filter, is connected with dissolved gas removing means；Membrane filtration produces water storage tank, is connected with film filter；Membrane filtration concentrated water storage tank, is connected with film filter；Evaporated crystallization device, is connected with reverse osmosis concentrated water storage tank.Beneficial effect of the present invention：Ensure effluent quality, without outer draining, really realize zero-emission.
Description
Technical field
The present invention relates to Treatment of Industrial Water field, the method and dress of a kind of coal chemical sewage recycling and zero-emission are particularly related to
Put.
Background technology
Coal chemical industry process is that coal is converted into gas, liquid and solid product or half product, is then further processed into
The industry of chemical industry, energy products.Coal chemical industry of new generation, it is leading with coal gasification, synthesize various fuel oil and the coal of chemical products
Charcoal clean utilization technology.Coal resources in China relative abundance, energy-consuming is based on coal, as world petroleum resource constantly subtracts
Few, coal chemical industry has wide prospect.
Coal Chemical Engineering Project is highly water intensive, high pollution type project, and wastewater discharge is big, is a kind of typical case containing having compared with difficult degradation
The industrial wastewater of machine compound.Many Local Coal aboundresources, water resource is short, and north of China and coastal most area are all
Belong to such case.As environmental bearing capacity starts to weaken, or environmental carrying capacity is smaller, ecological environment frailty, environmental protection
Cry more and more higher, following Development of Coal Chemical Industry also will be with low input, high production, of low pollution, recyclable mechanism development.Zero-emission
It is that discharge of wastewater infinitely reduces the activity until being zero to put, and makes to realize water resource using maximization.Current most domestic coalification
Routine " materialized pretreatment+biochemical treatment " method that work enterprise is used, draining can not all reach country or place row after processing
Put standard.
In recent years, constantly there are new methods and techniques to be used to handle coal chemical industrial waste water, but cut both ways.Simple biological oxygen
Contain a certain amount of hardly degraded organic substance in change method water outlet, COD value is higher, it is impossible to discharge standard is fully achieved.Though absorption method energy
The problem of preferably removing COD, but there is the regeneration and secondary pollution of adsorbent.Though catalytic oxidation, which can degrade, is difficult to biological drop
There are problems that operating cost in the organic matter of solution, but the commercial Application of reality.Anaerobic-aerobic Combined Treatment coal chemical industrial waste water
Preferable treatment effect, operational management and advantage of lower cost can be obtained, the technique is the main selection work of coal chemical industrial waste water
Skill, but when come water concentration it is higher and during containing more hardly degraded organic substance water outlet be difficult to stably reaching standard.
The content of the invention
The present invention proposes a kind of coal chemical sewage recycling and the method and apparatus of zero-emission, solves biological in the prior art
There is drawback during the method processing coal chemical industrial waste water such as oxidizing process, absorption method, catalytic oxidation, anaerobic-aerobic joint, after processing
The problem of draining can not all reach country or local discharge standard.
The technical proposal of the invention is realized in this way：
A kind of coal chemical sewage recycling and the device of zero-emission, including：
Oil interceptor, for removing the suspended oil in sewage；
Ultra micro air-floating apparatus, the suspended contaminant in sewage for removing the oil interceptor discharge, with the oil interceptor
Connection；
Multistage A/O systems, the sewage for being discharged to the ultra micro air-floating apparatus carries out biodegradation, denitrogenation dephosphorizing, gone
Except COD, including：Anaerobic zone, is connected with the ultra micro air-floating apparatus；Aerobic zone, is connected with the anaerobic zone；Settling zone, with institute
State anaerobic zone connection；Stable region, is connected with the settling zone；
Membrane filtration system, for being filtered to the sewage that the stable region is discharged, with the stable region and the anaerobism
Area is connected；
Super effect counter-infiltration system, the sewage for being discharged to the membrane filtration system carries out hardness removal and carries out desalination,
Including：Hardness removal device, is connected with the membrane filtration system；Dissolved gas removing means, with the hardness removal device
Connection；Film filter, is connected with the dissolved gas removing means；
Membrane filtration produces water storage tank, the production water for storing the super effect counter-infiltration system discharge, with the film filter
Connection；
Membrane filtration concentrated water storage tank, the concentrated water for storing the super effect counter-infiltration system discharge, with the film filter
Connection；
Evaporated crystallization device, it is and described reverse osmosis concentrated for by the concentrated water evaporative crystallization in the membrane filtration concentrated water storage tank
Water storage tank is connected.
Further, coal chemical sewage recycling of the present invention and the device of zero-emission, in addition to：
Advanced oxidation device, the Recalcitrant chemicals in sewage for aoxidizing the ultra micro air-floating apparatus discharge, to carry
The biodegradability of the sewage of the high ultra micro air-floating apparatus discharge, be arranged at the ultra micro air-floating apparatus and the anaerobic zone it
Between, the ultra micro air-floating apparatus, the advanced oxidation device and the anaerobic zone are sequentially communicated.
Further, coal chemical sewage recycling of the present invention and the device of zero-emission, in addition to：
Regulating reservoir, for adjusting the oil interceptor water outlet, is arranged between the oil interceptor and the ultra micro air-floating apparatus,
The oil interceptor, the regulating reservoir and the ultra micro air-floating apparatus are sequentially communicated.
Further, coal chemical sewage recycling of the present invention and the device of zero-emission, in addition to：
Medicine system, the removal effect for strengthening suspended contaminant by adding medicament, with the ultra micro air-floating apparatus
Connection.
Further, coal chemical sewage recycling of the present invention and the device of zero-emission, in addition to：
Intermediate pool, for depositing membrane filtration system production water, is arranged at the membrane filtration system and removes dress with the hardness
Between putting, the membrane filtration system, the intermediate pool and the hardness removal device are sequentially communicated.
Further, coal chemical sewage recycling of the present invention and the device of zero-emission,
The ultra micro air-floating apparatus includes：
Fluidic device, is arranged in the ultra micro air-floating apparatus；
The film filter includes：
Automatic back cleaning system, is arranged in the film filter.
A kind of method for carrying out water process using above-mentioned coal chemical sewage recycling and the device of zero-emission, including following step
Suddenly：
（A）Separated by oil removal technique except the larger suspended oil of particle in sewage；
（B）Oil removal water outlet carries out ultra micro air supporting, removes the suspended contaminant in the oil removal water outlet, and reduction subsequent treatment is difficult
Degree；
（C）A/O processing is carried out in ultra micro air supporting water outlet, to carry out biodegradation, denitrogenation dephosphorizing, remove COD；
（D）A/O processing water outlets carry out membrane filtration, membrane filtration discharge production water and concentrated water, and the concentrate recirculation of membrane filtration discharge is again
Secondary progress A/O processing；
（E）The production water turbidity and suspension of membrane filtration discharge are gone close to zero by lime softening method or/and ion-exchange
Hardness in the water for producing water discharged except the membrane filtration, and the dissolubility to being produced in lime softening or/and ion exchange process
Gas is removed, and the pH of the water outlet that will remove dissolved gas is adjusted to pH=6 ~ 14 and carries out membrane filtration, membrane filtration discharge production water and
Concentrated water, the production water of membrane filtration discharge is clean water；
（F）The concentrated water of membrane filtration discharge is evaporated crystallization treatment, obtains distilled water and crystallized product.
Further, it is of the present invention to carry out water process using above-mentioned coal chemical sewage recycling and the device of zero-emission
Method, it is further comprising the steps of：
Add medicament to strengthen the removal effect of suspended contaminant when carrying out ultra micro air supporting.
Further, it is of the present invention to carry out water process using above-mentioned coal chemical sewage recycling and the device of zero-emission
Method, it is further comprising the steps of：
Jet processing is carried out when carrying out ultra micro air supporting, to produce uniform, small bubble, strengthens air flotation effect.
Further, it is of the present invention to carry out water process using above-mentioned coal chemical sewage recycling and the device of zero-emission
Method, it is further comprising the steps of：
When recalcitrant substance content is higher in ultra micro air supporting water outlet, the ultra micro air supporting water outlet first carries out senior oxygen
Change is handled, and to improve wastewater biodegradability, A/O processing is then carried out again.
Beneficial effects of the present invention are：
1. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, processing step are simple, operation side
Just, capacity of resisting impact load is strong, and coal chemical industrial waste water is handled using the technological process of materialized pretreatment, biochemical treatment and advanced treating
And reach zero-emission, i.e., strengthen pretreating effect by using ultra micro air supporting, make that variation water quality is big, hard-degraded substance content is high
Coal chemical industrial waste water meets biochemical inflow requirement after pretreatment；The advanced treating of coal chemical industrial waste water is carried out using embrane method, it is ensured that coal
The effluent quality of wastewater from chemical industry, many places water outlet can reuse；Finally it is evaporated crystallization treatment, crystallized product outward transport, whole technique
It is middle without outer draining, really realize zero-emission.
2. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, when coal chemical industrial waste water difficult degradation is dirty
When contaminating thing too high levels, handled through advanced oxidation, can substantially reduce influences microorganism growth and microorganism is produced in waste water
The Recalcitrant chemicals of toxicity, reduce biochemical treatment difficulty, Biochemical Treatment are improved, so that coalification of the present invention
Work reusing sewage and the method and apparatus of zero-emission can be applied to any situation.
3. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, membrane filtration system and super effect reverse osmosis
The production water of permeable system can direct reuse in production, according to the effluent quality of design, by the production Water circulation of part membrane filtration system in
In the not high production technology of water quality requirement, the treating capacity of super effect counter-infiltration system is reduced, super effect counter-infiltration system is accordingly reduced
The equipment amount of system, investment reduction cost；A part for the concentrated water that film filter is discharged also can reuse in super effect counter-infiltration system
In production technology, the treating capacity of evaporated crystallization device is accordingly reduced, the energy consumption of evaporative crystallization is greatly reduced, reduces operation
Cost.
4. there is waste water everywhere in coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, integrated artistic
It can arrange film filter in reuse, including membrane filtration system water outlet, the production water in super effect counter-infiltration system, super effect counter-infiltration system
The distilled water of concentrated water and the evaporative crystallization generation gone out, the not high production work of water quality requirement can be back to respectively according to the difference of water quality
In skill, fresh water or supply recirculated cooling water, at the method and apparatus of coal chemical sewage recycling of the present invention and zero-emission
Manage effect good, really realize the zero-emission of coal chemical industrial waste water, the rich coal resources that are particularly suitable for use in, the coal in shortage of water resources area
Chemical Manufacture enterprise.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of coal chemical sewage recycling of the invention and the device of zero-emission.
In figure：
1. oil interceptor；2. regulating reservoir；3. ultra micro air-floating apparatus；4. advanced oxidation device；5. anaerobic zone；6. aerobic zone；7.
Settling zone；8. stable region；9. membrane filtration system；10. intermediate pool；11. hardness removal device；12. dissolved gas removing dress
Put；13. film filter；14. membrane filtration produces water storage tank；15. membrane filtration concentrated water storage tank；16. evaporated crystallization device；17. dosing
System；18th, three-way valve.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, in the first embodiment of a kind of coal chemical sewage recycling of the present invention and the device of zero-emission
In, including：
Oil interceptor 1, for removing the suspended oil in sewage；
Ultra micro air-floating apparatus 3, the suspended contaminant in sewage for removing the discharge of oil interceptor 1, is connected with oil interceptor 1；
Multistage A/O systems, the sewage for being discharged to ultra micro air-floating apparatus 3 carries out biodegradation, denitrogenation dephosphorizing, removal
COD, including：Anaerobic zone 5, is connected with ultra micro air-floating apparatus 3；Aerobic zone 6, is connected with anaerobic zone 5；Settling zone 7, with anaerobic zone 5
Connection；Stable region 8, is connected with settling zone 7；
Membrane filtration system 9, for being filtered to the sewage that stable region 8 is discharged, is connected with stable region 8 and anaerobic zone 5；
Super effect counter-infiltration system, the sewage for being discharged to membrane filtration system 9 carries out hardness removal and carries out desalination, bag
Include：Hardness removal device 11, is connected with membrane filtration system 9；Dissolved gas removing means 12, connects with hardness removal device 11
It is logical；Film filter 13, is connected with dissolved gas removing means 12；
Membrane filtration produces water storage tank 14, the production water for storing super effect counter-infiltration system discharge, is connected with film filter 13；
Membrane filtration concentrated water storage tank 15, the concentrated water for storing super effect counter-infiltration system discharge, is connected with film filter 13；
Evaporated crystallization device 16, for by the concentrated water evaporative crystallization in membrane filtration concentrated water storage tank 15, being stored up with reverse osmosis concentrated water
Tank 15 is connected.
Wherein, multistage A/O systems are multistage anaerobic/aerobic（Anacrobic/Oxic）System, membrane filtration system 9 is discharged
Concentrate recirculation to the anaerobic zone 5 of multistage A/O systems carry out A/O processing again.
Wherein it is preferred to, the configuration of film in the membrane filtration system 9 and film filter 13 is drawn according to the aperture of film
Point, it is any one in micro-filtration, ultrafiltration, nanofiltration, counter-infiltration.
Wherein it is preferred to, the membrane structure in the membrane filtration system 9, i.e., according to film structure divide, be Flat Membrane, in
Any one in hollow fiber film, tubular membrane, rolled film.
Wherein it is preferred to, the hardness removal device 11 is lime softening plant or/and ion interchange unit.
Wherein, the ion interchange unit can include：
Ion-exchanger；
Regenerator, is connected with ion-exchanger；
Tower is cleaned, is connected with regenerator and ion-exchanger.
Wherein it is preferred to, the ion-exchanger is strong acidic ion exchanger, weak acid ion exchanger, strong basicity
Any one or more in ion-exchanger, weakbase ion exchanger.
In another embodiment of device of coal chemical sewage recycling of the present invention and zero-emission, it can also include：
Advanced oxidation device 4, the Recalcitrant chemicals in sewage for aoxidizing the discharge of ultra micro air-floating apparatus 3, to improve
The biodegradability for the sewage that ultra micro air-floating apparatus 3 is discharged, is arranged between ultra micro air-floating apparatus 3 and anaerobic zone 5, ultra micro air supporting dress
Put 3, advanced oxidation device 4 and anaerobic zone 5 is sequentially communicated.
It is furnished with three-way valve 18 on the inlet pipeline of the advanced oxidation device 4, respectively with ultra micro air-floating apparatus 3 and anaerobism
Area 5 is connected.
Wherein it is preferred to, the advanced oxidation device 4 be senior light electrolysis oxidation unit, senior electric flocculation oxidation unit,
Appointing in senior electrocatalysis oxidation apparatus, senior electrocatalysis oxidation apparatus, senior Fenton oxidation device, senior ozone-oxidizing device
Meaning is one or more of.
In another embodiment of device of coal chemical sewage recycling of the present invention and zero-emission, it can also include：
Regulating reservoir 2, for adjusting the water outlet of oil interceptor 1, is arranged between oil interceptor 1 and ultra micro air-floating apparatus 3, oil interceptor 1,
Regulating reservoir 2 and ultra micro air-floating apparatus 3 are sequentially communicated.
In another embodiment of device of coal chemical sewage recycling of the present invention and zero-emission, it can also include：
Medicine system 17, the removal effect for strengthening suspended contaminant by adding medicament, connects with ultra micro air-floating apparatus 3
It is logical.
In another embodiment of device of coal chemical sewage recycling of the present invention and zero-emission, it can also include：
Intermediate pool 10, for depositing the production water of membrane filtration system 9, is arranged at membrane filtration system 9 and hardness removal device 11
Between, membrane filtration system 9, intermediate pool 10 and hardness removal device 11 are sequentially communicated.
In another embodiment of device of coal chemical sewage recycling of the present invention and zero-emission,
The ultra micro air-floating apparatus 3 can include：
Fluidic device, is arranged in ultra micro air-floating apparatus 3；
The film filter 13 can include：
Automatic back cleaning system, is arranged in film filter 13.
The present invention also proposes a kind of side that water process is carried out using above-mentioned coal chemical sewage recycling and the device of zero-emission
Method, comprises the following steps：
（A）Separated by oil removal technique except the larger suspended oil of particle in sewage；
（B）Oil removal water outlet carries out ultra micro air supporting, removes the suspended contaminant in oil removal water outlet, reduces subsequent treatment difficulty；
（C）A/O processing is carried out in ultra micro air supporting water outlet, to carry out biodegradation, denitrogenation dephosphorizing, remove COD；
（D）A/O processing water outlets carry out membrane filtration, membrane filtration discharge production water and concentrated water, and the concentrate recirculation of membrane filtration discharge is again
Secondary progress A/O processing；
（E）The production water turbidity and suspension of membrane filtration discharge are gone close to zero by lime softening method or/and ion-exchange
Hardness in the water for producing water discharged except membrane filtration, and the dissolved gas to being produced in lime softening or/and ion exchange process
Removed, the pH for the water outlet that will remove dissolved gas is adjusted to pH=6~14 and carries out membrane filtration, and membrane filtration discharge produces water and dense
Water, the production water of membrane filtration discharge is clean water；
（F）The concentrated water of membrane filtration discharge is evaporated crystallization treatment, obtains distilled water and crystallized product.
Wherein, above-mentioned dissolved gas is mainly dissolubility CO2。
Water process is carried out in a kind of above-mentioned coal chemical sewage recycling of use proposed by the present invention and the device of zero-emission
It is further comprising the steps of in another embodiment of method：
Add medicament to strengthen the removal effect of suspended contaminant when carrying out ultra micro air supporting.
Water process is carried out in a kind of above-mentioned coal chemical sewage recycling of use proposed by the present invention and the device of zero-emission
It is further comprising the steps of in another embodiment of method：
Jet processing is carried out when carrying out ultra micro air supporting, to produce uniform, small bubble, strengthens air flotation effect.
Water process is carried out in a kind of above-mentioned coal chemical sewage recycling of use proposed by the present invention and the device of zero-emission
It is further comprising the steps of in another embodiment of method：
When recalcitrant substance content is higher in ultra micro air supporting water outlet, ultra micro air supporting water outlet is first carried out at advanced oxidation
Reason, to improve wastewater biodegradability, then carries out A/O processing again.
Wherein, coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, described multistage A/O systems
System, or during A/O processing, its water retention time is preferably more than 15 hours, and sludge concentration is preferably 2000 ~ 8000mg/L, it is dirty
Mud reflux ratio is preferably 50 ~ 200%
Coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, mainly have the advantage that：
1. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, processing step are simple, operation side
Just, capacity of resisting impact load is strong, and coal chemical industrial waste water is handled using the technological process of materialized pretreatment, biochemical treatment and advanced treating
And reach zero-emission, i.e., strengthen pretreating effect by using ultra micro air supporting, make that variation water quality is big, hard-degraded substance content is high
Coal chemical industrial waste water meets biochemical inflow requirement after pretreatment；The advanced treating of coal chemical industrial waste water is carried out using embrane method, it is ensured that coal
The effluent quality of wastewater from chemical industry, many places water outlet can reuse；Finally it is evaporated crystallization treatment, crystallized product outward transport, whole technique
It is middle without outer draining, really realize zero-emission.
2. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, when coal chemical industrial waste water difficult degradation is dirty
When contaminating thing too high levels, handled through advanced oxidation, can substantially reduce influences microorganism growth and microorganism is produced in waste water
The Recalcitrant chemicals of toxicity, reduce biochemical treatment difficulty, Biochemical Treatment are improved, so that coalification of the present invention
Work reusing sewage and the method and apparatus of zero-emission can be applied to any situation.
3. coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, membrane filtration system 9 and super effect are anti-
The production water of osmosis system can direct reuse in production, according to the effluent quality of design, by the production Water circulation of part membrane filtration system 9
In the not high production technology of water quality requirement, the treating capacity of super effect counter-infiltration system is reduced, super effect counter-infiltration is accordingly reduced
The equipment amount of system, investment reduction cost；A part for the concentrated water that film filter is discharged can also be returned in super effect counter-infiltration system
For in production technology, accordingly reducing the treating capacity of evaporated crystallization device, the energy consumption of evaporative crystallization is greatly reduced, reduces fortune
Seek cost.
4. there is waste water everywhere in coal chemical sewage recycling of the present invention and the method and apparatus of zero-emission, integrated artistic
Can film filter in reuse, including the water outlet of membrane filtration system 9, the production water in super effect counter-infiltration system, super effect counter-infiltration system
The distilled water of concentrated water and the evaporative crystallization generation of discharge, the not high production of water quality requirement can be back to respectively according to the difference of water quality
In technique, fresh water or supply recirculated cooling water, the method and apparatus of coal chemical sewage recycling of the present invention and zero-emission
High treating effect, really realizes the zero-emission of coal chemical industrial waste water, the rich coal resources that are particularly suitable for use in, shortage of water resources area
Coal chemical industry manufacturing enterprise.
Several examples are exemplified below to illustrate the effect of the present invention, but protection scope of the present invention is not limited only to this.
Embodiment 1：
Certain ammonia from coal waste water, raw water CODCrFor 1000mg/L ~ 1500mg/L, through coal chemical sewage recycling and zero-emission
Method and apparatus is handled, wherein Advanced Oxidation Technics in Dealing section is not used, multistage A/O system sludges concentration 3500mg/L ~
4000mg/L, 20 hours system residence times, return sludge ratio is 100%.The production water of membrane filtration system 9 CODCr≤ 50mg/L, surpasses effect
Counter-infiltration system production water CODCr≤10mg/L.Membrane filtration system 9 production water colorless, clarification, odorless, available for water quality requirement not
In high production；Super effect counter-infiltration system producing water water quality is high, can be used as recirculated cooling water or boiler feedwater；Super effect counter-infiltration system
Concentrated water of uniting clarification, colourless, odorlessness, water is relatively fewer, can direct reuse into production, also can produce water with membrane filtration system 9
It is used in mixed way, if some period does not need this recycle-water in production, this section of waste water also can all be evaporated crystallization；Evaporative crystallization
The distilled water of generation can individually reuse, also can mix reuse with membrane filtration system 9.Without discharge water in whole technical process.
Embodiment 2：
Certain coal gasification waste water, raw water CODCrFor 2000mg/L ~ 2500mg/L, NH3- N is 300mg/L ~ 350mg/L, through coal
The method and apparatus of chemical engineering sewage reuse and zero-emission is handled, wherein advanced oxidation processes section, multistage A/O systems is not used
Sludge concentration 3000mg/L ~ 3500mg/L, 24 hours system residence times, return sludge ratio is 100%.Membrane filtration system 9 produces water
CODCr≤ 60mg/L, NH3- N≤5mg/L, surpasses effect counter-infiltration system production water CODCr≤ 10mg/L, NH3-N≤0.5mg/L.Film mistake
The production of filter system 9 water colorless, clarification, odorless, available in the production not high to water quality requirement；Super effect counter-infiltration system production water water
Matter is high, can be used as recirculated cooling water or boiler feedwater；Super effect counter-infiltration system concentrated water clarification, colourless, odorlessness, water are relative
It is less, can direct reuse into production, also can with membrane filtration system 9 production water be used in mixed way, if production in some period need not
This recycle-water, this section of waste water also can all be evaporated crystallization apparatus；Evaporative crystallization produce distilled water can individually reuse, also may be used
With film filtration effluent mixing reuse.In whole technical process, no discharge water.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God is with principle, and any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (7)
1. a kind of coal chemical sewage recycling and the device of zero-emission, it is characterised in that including：
Oil interceptor (1), for removing the suspended oil in sewage；
Ultra micro air-floating apparatus (3), the suspended contaminant in sewage for removing the oil interceptor (1) discharge, with the oil removal
Pond (1) is connected；
Regulating reservoir (2), for adjusting the oil interceptor (1) water outlet, is arranged at the oil interceptor (1) and the ultra micro air-floating apparatus
(3) between, the oil interceptor (1), the regulating reservoir (2) and the ultra micro air-floating apparatus (3) are sequentially communicated；
Multistage A/O systems, the sewage for being discharged to the ultra micro air-floating apparatus (3) carries out biodegradation, denitrogenation dephosphorizing, removal
COD, including：Anaerobic zone (5), is connected with the ultra micro air-floating apparatus (3)；Aerobic zone (6), is connected with the anaerobic zone (5)；It is heavy
Shallow lake area (7), is connected with the anaerobic zone (5)；Stable region (8), is connected with the settling zone (7), wherein, the multistage A/O systems
Water retention time is more than 15h in system, and sludge concentration is 2000-8000mg/L, and return sludge ratio is 50-200%；
Membrane filtration system (9), it is and the stable region (8) and described for being filtered to the sewage that the stable region (8) are discharged
Anaerobic zone (5) is connected；
Advanced oxidation device (4), the Recalcitrant chemicals in sewage for aoxidizing ultra micro air-floating apparatus (3) discharge, with
The biodegradability of the sewage of ultra micro air-floating apparatus (3) discharge is improved, the ultra micro air-floating apparatus (3) is arranged at and detests with described
Between oxygen area (5), the ultra micro air-floating apparatus (3), the advanced oxidation device (4) and the anaerobic zone (5) are sequentially communicated；
Super effect counter-infiltration system, the sewage for being discharged to the membrane filtration system (9) carries out hardness removal and carries out desalination, bag
Include：Hardness removal device (11), is connected with the membrane filtration system (9)；Dissolved gas removing means (12), with the hardness
Removal device (11) is connected；Film filter (13), is connected with the dissolved gas removing means (12)；
Membrane filtration production water storage tank (14), the production water for storing the super effect counter-infiltration system discharge, with the film filter
(13) connect；
Membrane filtration concentrated water storage tank (15), the concentrated water for storing the super effect counter-infiltration system discharge, with the film filter
(13) connect, the concentrated water part of membrane filtration concentrated water storage tank (15) discharge is back in regulating reservoir (2)；
Evaporated crystallization device (16), for by the concentrated water evaporative crystallization in the membrane filtration concentrated water storage tank (15), with the reverse osmosis
Saturating concentrated water storage tank (15) connection.
2. coal chemical sewage recycling according to claim 1 and the device of zero-emission, it is characterised in that also include：Dosing
System (17), the removal effect for strengthening suspended contaminant by adding medicament, is connected with the ultra micro air-floating apparatus (3).
3. coal chemical sewage recycling according to claim 1 or 2 and the device of zero-emission, it is characterised in that also include：
Intermediate pool (10), for depositing membrane filtration system (9) production water, is arranged at the membrane filtration system (9) and the hardness
Between removal device (11), the membrane filtration system (9), the intermediate pool (10) and the hardness removal device (11) are successively
Connection.
4. coal chemical sewage recycling according to claim 1 or 2 and the device of zero-emission, it is characterised in that
The ultra micro air-floating apparatus (3) includes：
Fluidic device, is arranged in the ultra micro air-floating apparatus (3)；
The film filter (13) includes：
Automatic back cleaning system, is arranged in the film filter (13).
5. a kind of method for carrying out water process using coal chemical sewage recycling as claimed in claim 1 and the device of zero-emission,
It is characterised in that it includes following steps：
(A) separated by oil removal technique except the larger suspended oil of particle in sewage；
(B) oil removal water outlet carries out ultra micro air supporting, removes the suspended contaminant in the oil removal water outlet, reduces subsequent treatment difficulty；
Ultra micro air supporting water outlet first carries out advanced oxidation processing, to improve wastewater biodegradability；
(C) advanced oxidation processing water outlet carries out A/O processing, to carry out biodegradation, denitrogenation dephosphorizing, remove COD；
(D) A/O handles water outlet and carries out membrane filtration, membrane filtration discharge production water and concentrated water, and the concentrate recirculation of membrane filtration discharge enters again
Row A/O processing；
(E) the production water turbidity and suspension of membrane filtration discharge remove institute close to zero by lime softening method or/and ion-exchange
Hardness in the water for the production water for stating membrane filtration discharge, and the dissolved gas to being produced in lime softening or/and ion exchange process
Removed, the pH for the water outlet that will remove dissolved gas is adjusted to pH=6~14 and carries out membrane filtration, and membrane filtration discharge produces water and dense
Water, the production water of membrane filtration discharge is clean water；
(F) concentrated water of membrane filtration discharge is evaporated crystallization treatment, obtains distilled water and crystallized product.
6. method according to claim 5, it is characterised in that further comprising the steps of：
Add medicament to strengthen the removal effect of suspended contaminant when carrying out ultra micro air supporting.
7. method according to claim 6, it is characterised in that further comprising the steps of：
Jet processing is carried out when carrying out ultra micro air supporting, to produce uniform, small bubble, strengthens air flotation effect.
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| CN104071808B (en) * | 2014-07-24 | 2016-03-02 | 哈尔滨工业大学 | A kind of Coal Chemical Industry strong brine is separated the method that evaporative crystallization prepares Industrial Salt |
| CN105800864A (en) * | 2015-05-27 | 2016-07-27 | 苏州澄江环境科技有限公司 | Zero discharge method for waste liquid of water-based ink |
| CN105502808A (en) * | 2015-12-07 | 2016-04-20 | 江苏博大环保股份有限公司 | System for treating oil field effluent by combining double A/O biochemistry with advanced oxidation |
| CN105621735A (en) * | 2015-12-21 | 2016-06-01 | 哈尔滨工业大学 | Closed cycle treatment method for intercepting difficultly and biochemically degraded organic matters in coal chemical wastewater |
| CN114075010B (en) * | 2020-08-10 | 2023-05-30 | 中国石油化工股份有限公司 | Differentiation treatment process and system for production sewage series and salt-containing sewage series of coal-to-methanol process |
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| CN101628771A (en) * | 2008-07-16 | 2010-01-20 | 艾博特(厦门)设备工程有限公司 | Method with zero discharge of waste water |
| CN202379854U (en) * | 2011-12-27 | 2012-08-15 | 北京美华博大环境工程有限公司 | Coal chemical industry sewage zero discharge treatment system |
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| US7628919B2 (en) * | 2006-09-01 | 2009-12-08 | Anticline Disposal, Llc | Method for treating water contaminated with methanol and boron |
| CN101560045A (en) * | 2009-06-04 | 2009-10-21 | 北京美华博大环境工程有限公司 | Coal chemical wastewater treating technique |
| CN102344223A (en) * | 2010-08-03 | 2012-02-08 | 曾明 | Treatment or recycling method and purpose for coal gasification and coal carbonization waste water |
| CN203284286U (en) * | 2012-12-31 | 2013-11-13 | 北京清大国华环保科技有限公司 | Sewage recycling and zero-emission device for coal chemical industry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101628771A (en) * | 2008-07-16 | 2010-01-20 | 艾博特(厦门)设备工程有限公司 | Method with zero discharge of waste water |
| CN202379854U (en) * | 2011-12-27 | 2012-08-15 | 北京美华博大环境工程有限公司 | Coal chemical industry sewage zero discharge treatment system |
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