CN108503083A - A kind of processing method and sewage-treatment plant of sewage - Google Patents
A kind of processing method and sewage-treatment plant of sewage Download PDFInfo
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- CN108503083A CN108503083A CN201810300959.5A CN201810300959A CN108503083A CN 108503083 A CN108503083 A CN 108503083A CN 201810300959 A CN201810300959 A CN 201810300959A CN 108503083 A CN108503083 A CN 108503083A
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- production water
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- 239000010865 sewage Substances 0.000 title claims abstract description 64
- 238000003672 processing method Methods 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 254
- 238000004519 manufacturing process Methods 0.000 claims abstract description 115
- 238000001728 nano-filtration Methods 0.000 claims abstract description 76
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 72
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 63
- 230000009977 dual effect Effects 0.000 claims abstract description 36
- 239000003513 alkali Substances 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000003643 water by type Substances 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 13
- 239000005416 organic matter Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 8
- 238000010612 desalination reaction Methods 0.000 claims description 8
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 claims description 7
- 150000003839 salts Chemical class 0.000 claims description 7
- 229920002521 macromolecule Polymers 0.000 claims description 6
- 229910021645 metal ion Inorganic materials 0.000 claims description 6
- 150000005837 radical ions Chemical class 0.000 claims description 2
- 239000012528 membrane Substances 0.000 description 19
- 239000000243 solution Substances 0.000 description 10
- 238000003860 storage Methods 0.000 description 9
- 239000002351 wastewater Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000000926 separation method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000003134 recirculating effect Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
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- 238000011084 recovery Methods 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 239000012267 brine Substances 0.000 description 4
- 238000004590 computer program Methods 0.000 description 4
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
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- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
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- 238000001764 infiltration Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003204 osmotic effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000026676 system process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- YZCKVEUIGOORGS-IGMARMGPSA-N Protium Chemical compound [1H] YZCKVEUIGOORGS-IGMARMGPSA-N 0.000 description 1
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 1
- 229930006000 Sucrose Natural products 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000009296 electrodeionization Methods 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000005720 sucrose Substances 0.000 description 1
- 238000009923 sugaring Methods 0.000 description 1
- -1 therefore Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
- C02F5/02—Softening water by precipitation of the hardness
- C02F5/06—Softening water by precipitation of the hardness using calcium compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The embodiment of the present application discloses a kind of processing method of sewage, for handling sewage, is recycled, improves the utilization rate of sewage.The embodiment of the present application method includes：Sewage is handled by Dual alkali processing unit, obtains the production water of the first property；The production water of first property is handled by ultrafiltration apparatus, obtains ultrafiltration production water；Water is produced to the ultrafiltration to handle, obtain nanofiltration production water by nanofiltration device；Water being produced to the nanofiltration by two steps ro device to handle, obtaining reverse osmosis produced water, by continuous demineralizer, the reverse osmosis produced water is handled, obtain the production water of the second quality, the production water of the second quality is used for the water source of industrial process waters.
Description
Technical field
This application involves the processing methods and sewage-treatment plant of sewage treatment field more particularly to a kind of sewage.
Background technology
In the prior art scheme, sewage disinfection treatment be sewage enter it is traditional precipitate, before the processing such as biology after
The pretreatment facility that the requirement of water quality is arranged in continuous process flow, is the throat of sewage treatment plant.Municipal sewage is concentrated
Decentralized wastewater treatment plant in treatment plant and pollution sources, pretreatment include mainly grid, sieve, setting pot, grit water separator etc.
Manage facility.And it is then above-mentioned general pre- except needing to carry out before entering centralised or decentralised sewage treatment plant for certain industrial wastewaters
Processing is outer, also needs the adjustings processing for carrying out water quality and quantity and some other special pretreatment, such as neutralizes, fishing hair, preliminary sedimentation, in advance
Aeration etc..If pretreating process is not up to standard, cause grid slag excessive, subsequent processing equipment is lost big.
Invention content
The embodiment of the present application provides a kind of processing method of sewage, for handling sewage, is recycled,
Improve the utilization rate of sewage.
In view of this, the embodiment of the present application first aspect provides a kind of processing method of sewage, may include：
Sewage is handled by Dual alkali processing unit, obtains the production water of the first property；
The production water of first property is handled by ultrafiltration apparatus, obtains ultrafiltration production water；
Water is produced to the ultrafiltration to handle, obtain nanofiltration production water by nanofiltration device；
Water is produced to the nanofiltration to handle, obtain reverse osmosis produced water by two steps ro device；
By continuous demineralizer, the reverse osmosis produced water is handled, obtains the production water of the second quality, described second
The production water of property is used for the water source of industrial process waters.
Optionally, in some embodiments of the present application, the Dual alkali processing unit includes：Machine adds pond and becomes hole filter
Pond；
It is described that sewage is handled by Dual alkali processing unit, the production water of the first property is obtained, may include：
Add pond to remove metal ion and bicarbonate ion in the sewage by the machine, is filtered by the change hole
Oil removal is removed in pond, obtains the production water of first property.
Optionally, in some embodiments of the present application, it is described by ultrafiltration apparatus to the production water of first property into
Row processing obtains ultrafiltration production water, may include：
By the ultrafiltration apparatus, the macromolecular substances in the production water of first property are removed, obtain the ultrafiltration production
Water.
It is optionally, described that ultrafiltration production water is handled by nanofiltration device in some embodiments of the present application,
Nanofiltration production water is obtained, may include：
The ultrafiltration, which is intercepted, by the nanofiltration device produces the organic matter and inorganic matter that water middle-molecular-weihydroxyethyl is more than preset threshold value,
Obtain the nanofiltration production water.
Optionally, in some embodiments of the present application, it is described by two steps ro device to the nanofiltration produce water into
Row processing, obtains reverse osmosis produced water, including：
Water is produced to the nanofiltration by the two steps ro device and carries out pre- desalination, obtains the reverse osmosis produced water.
The embodiment of the present application second aspect provides a kind of sewage-treatment plant, may include：
Dual alkali processing unit obtains the first property for being handled sewage by the Dual alkali processing unit
Production water；
Ultrafiltration apparatus obtains ultrafiltration production for being handled the production water of first property by the ultrafiltration apparatus
Water；
Nanofiltration device is handled for producing water to the ultrafiltration by the nanofiltration device, obtains nanofiltration production water；
Two steps ro device is handled for producing water to the nanofiltration by the two steps ro device, is obtained
Reverse osmosis produced water；
Continuous demineralizer obtains the production water of the second quality for handling the reverse osmosis produced water, and described second
The production water of property is used for the water source of industrial process waters.
Optionally, in some embodiments of the present application, the Dual alkali processing unit includes：Machine adds pond and becomes hole filter
Pond；
The Dual alkali processing unit, specifically for adding pond to remove metal ion and carbon in the sewage by the machine
Sour hydrogen radical ion removes oil removal by the change hole filtering pool, obtains the production water of first property.
Optionally, in some embodiments of the present application,
The ultrafiltration apparatus, big point be specifically used in the production water for removing first property by the ultrafiltration apparatus
Sub- substance obtains ultrafiltration production water.
Optionally, in some embodiments of the present application,
The nanofiltration device, it is more than preset to be specifically used for intercepting the ultrafiltration to produce water middle-molecular-weihydroxyethyl by the nanofiltration device
The organic matter and inorganic matter of threshold value obtain the nanofiltration production water.
Optionally, in some embodiments of the present application,
The two steps ro device is specifically used for producing water progress in advance to the nanofiltration by the two steps ro device
Desalination obtains the reverse osmosis produced water.
The embodiment of the present application third aspect provides a kind of storage medium, it should be noted that technical scheme essence
On in other words all or part of the part that contributes to existing technology or the technical solution can with software produce mouth shape
Formula embodies, which is stored in a storage medium, for being stored as above-mentioned sewage-treatment plant institute
Computer software instructions, it includes be the program designed by sewage-treatment plant for executing above-mentioned various aspects.
The storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access
The various media that can store program code such as memory (RAM, Random Access Memory), magnetic disc or CD.
The embodiment of the present application fourth aspect provides a kind of computer program product including instruction, when it is transported on computers
When row so that computer executes the method as described in above-mentioned various aspects or any optional realization method of various aspects.
As can be seen from the above technical solutions, the embodiment of the present application has the following advantages：
Sewage is handled by Dual alkali processing unit, obtains the production water of the first property；By nanofiltration device to institute
The production water for stating the first property is handled, and nanofiltration production water is obtained；The nanofiltration is produced at water by two steps ro device
Reason, obtains the production water of the second quality, and the production water of the second quality is used for the water source of boiler replenishing water processing system.By to sewage
Various processing are carried out, reverse osmosis produced water is obtained；The reverse osmosis produced water is handled, the production water of the second quality is obtained, it is described
The production water of the second quality is used for the water source of industrial process waters.Sewage is recycled, the utilization rate of sewage is improved.
Description of the drawings
It, below will be to institute in embodiment and description of the prior art in order to illustrate more clearly of the embodiment of the present application technical solution
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the application
Example, can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is one embodiment schematic diagram of the processing method of sewage in the embodiment of the present application；
Fig. 2 is a flow diagram of the processing method of sewage in the embodiment of the present application；
Fig. 3 A are one embodiment schematic diagram of sewage-treatment plant in the embodiment of the present application；
Fig. 3 B are another embodiment schematic diagram of sewage-treatment plant in the embodiment of the present application.
Specific implementation mode
The embodiment of the present application provides a kind of processing method of sewage, for handling sewage, is recycled,
Improve the utilization rate of sewage.
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, technical solutions in the embodiments of the present application are described, it is clear that described embodiment is only the application part
Embodiment, instead of all the embodiments.Based on the embodiment in the application, it shall fall within the protection scope of the present application.
In the embodiment of the present application, full factory's production and sanitary wastewater reuse after processing, must not arrange outside.According to each side
The demand in face is recycled, dual treatment, the method for cascade utilization under the premise of all kinds of use water qualities of guarantee unit using classification,
To realize the zero-emission of full factory's waste water.Maximum full factory's wastewater discharge is recirculating water blowdown water, by circulating water discharge sewage recovery,
It will be the effective way for solving wastewater zero discharge.
The original intention of scheme designed by the embodiment of the present application is exactly by recirculating water blowdown water as boiler replenishing water processing system
Water source.Because recirculating water blowdown water water quality is complicated, salt content, hardness, COD (chemical oxygen
Demand, COD), the Indexes Abnormalities such as sulfate ion it is high, conventional water treatment process can not be run under this water quality, for such
Water quality, it is proposed that technical scheme.
In the embodiment of the present application, recirculating water blowdown water is pre-processed first, after Dual alkali processing unit
Production water enters Boiler water Feeding System system, and Boiler water Feeding System system increases nanofiltration device, protects subsequently reverse osmosis etc.
Device, first-stage reverse osmosis concentrated water increase enrichment facility, and the concentrated water amount that concentrated water device produces water is used for desulphurization system process water.
Technical scheme is described further by way of examples below, as shown in FIG. 1, FIG. 1 is this Shens
Please in embodiment the processing method of sewage one embodiment schematic diagram, including：
101, sewage is handled by Dual alkali processing unit, obtains the production water of the first property.
The Dual alkali processing unit includes：Machine adds pond and becomes hole filtering pool；It is described by Dual alkali processing unit to dirt
Water is handled, and is obtained the production water of the first property, be may include：Pond is added to remove the metal ion in the sewage by the machine
And bicarbonate ion, oil removal is gone by the change hole filtering pool, obtains the production water of first property.The primary
The production water of matter can be used for the water source of boiler replenishing water processing system.
Can be one it should be noted that being not specifically limited for the quantity that machine adds pond and becomes hole filtering pool, it can be with
It is two, can also be three etc..
Illustratively, electric power plant circulating water sewerage is pumped to Dual alkali processing unit, Dual alkali processing unit by conveying
It may include two machine Jia Chi, two change hole filtering pools, add pond to be separately added into the medicaments such as lime, sodium carbonate by two machines, remove
Remove the Ca in recirculating water blowdown water2+、Mg2+、HCO3 -Plasma, machine add pond water outlet that can enter change hole filtering pool, become hole filtering pool
Suspended matter can be reduced.The water outlet of Dual alkali processing unit can obtain being discharged superfluous OH-Content is in 0.2-0.3mmol/L ranges
It is interior, so that most of hardometer bicarbonate ion is removed.
102, by ultrafiltration apparatus, the macromolecular substances in the production water of the first property are removed, obtain ultrafiltration production water.
It is described that the production water of first property is handled by ultrafiltration apparatus, ultrafiltration production water is obtained, may include：It is logical
The ultrafiltration apparatus is crossed, the macromolecular substances in the production water of first property are removed, obtains the ultrafiltration production water.
Illustratively, Dual alkali processing unit water outlet enters clear water reserviors, and ultrafiltration apparatus, ultrafiltration are delivered to by make-up pump
Device can retain the macromolecular substances such as suspended matter, colloid, particle, the bacterium in water removal.Then, ultrafiltration production water can enter
Ultrafiltration water tank.
It should be noted that being reported according to complete water quality analysis, can be up to when COD contents highest in sewage treatment plant's water
45mg/L send COD contained by the water to power plant to belong to difficult to degrade because sewage treatment plant uses the treatment process of biochemical degradation organic matter
Larger molecular organics must cannot effectively be removed it by Dual alkali processing unit.COD concentrates richness in recirculated cooling water
Collection, will cause the dirt of follow-up reverse osmosis membrane system to block up, and chemical cleaning is frequent, be unfavorable for live operational management, shortens film and uses the longevity
Life.Therefore, ultrafiltration production water can be handled into nanofiltration device.
It is understood that ultrafiltration (Ultra-filtration, UF) device is a kind of advanced membrane separation technique, feed liquid
In the solvent that contains and various small solutes reach low-pressure side through filter membrane from high pressure feed liquid side, to obtain permeate or be
Ultrafiltrate；Its ultrafiltration membrane micropore is up to 0.01 micron (ten a ten thousandth millimeters) hereinafter, the particle in water, glue can be effectively removed
Under body, bacterium, heat source and organic matter force effect, and the big solute molecule of size ratio membrane aperture is rejected by into concentrate.
103, water is produced to ultrafiltration to handle, obtain nanofiltration production water by nanofiltration device.
It is described that ultrafiltration production water is handled by nanofiltration device, nanofiltration production water is obtained, may include：By described
Nanofiltration device intercepts the organic matter and inorganic matter that the ultrafiltration production water middle-molecular-weihydroxyethyl is more than preset threshold value, obtains the nanofiltration production
Water.
Illustratively, ultrafiltration production water enters nanofiltration device, and sodium filter is to be widely used in earliest as industrial separation equipment
A kind of technological means in the fields such as sugaring, industry purification, decoloration.The ability of sodium filter separation organic matter is up to 80%~90%, sodium
Filter can intercept organic matter and inorganic matter of the molecular weight 150~200 or more between ultrafiltration and reverse osmosis membrane, therefore, sodium filter
Not only there is the ability of separation organic matter, while the ability of also Selective Separation inorganic salts, especially to bivalent ions point
From with obvious effects.Separation COD is filtered using sodium, eliminates adverse effects of the COD to follow-up reverse osmosis membrane.Follow-up reverse osmosis membrane can be improved
The rate of recovery, while can also mitigate the desalination burden of follow-up membranous system, ensure DW system demineralized water system stable effluent quality, up to standard.
It is understood that nanofiltration (Nanofiltration, NF) is a kind of pressure between reverse osmosis between ultrafiltration
Membrane separating process is driven, the pore diameter range of NF membrane is in several rans.NF membrane is mostly from reverse osmosis membrane derivation, such as
Cellulose diacetate (CA) film, three cellulose acetate membrane (CTA) film, aromatic polyamide composite membrane and sulfonated polyether sulfone film etc..
Nanofiltration is used for the smaller substance of relative molecular mass, such as inorganic salts or glucose, sucrose small organic molecule
It is separated from solvent.Nanofiltration is also known as low pressure reverse osmosis, is a kind of emerging field of membrane separation technique, and separating property is situated between
In reverse osmosis between ultrafiltration, some inorganic salts and certain solvents are allowed to penetrate film, to achieve the effect that separation.
104, it crosses two steps ro device to handle nanofiltration production water, obtains reverse osmosis produced water.
It is described that nanofiltration production water is handled by two steps ro device, reverse osmosis produced water is obtained, including：Pass through
The two steps ro device carries out pre- desalination to nanofiltration production water, obtains the reverse osmosis produced water.
Illustratively, nanofiltration production water enters two steps ro device by reverse osmosis feedwater pump and high-pressure pump.Wherein, level-one
Reverse osmosis concentrated water and the amount of nanofiltration concentrated water have been more than desulphurization system process water consumption, can not all be dissolved.And hence it is also possible to increase
First-stage reverse osmosis concentrated water enrichment facility, concentrated water and the unified recycling of nanofiltration concentrated water of enrichment facility production water are delivered to desulphurization system, lead to
This technology path is crossed, consumes the complete maximum waste water of factory's discharge capacity, and be made into demineralized water for users to use.
It is understood that reverse osmosis basic principle is：When pure water and brine are separated by ideal semi-permeable membrane, ideal is semi-transparent
Film only allow water by by prevent salt from passing through, the water of film pure water side spontaneously can flow into brine side by semi-permeable membrane at this time, this
Kind phenomenon is known as permeating, if the brine side application pressure in film works as application then the neous flow of water will be suppressed and slow down
Pressure when reaching a certain numerical value, water is equal to zero by the net flow of film, this pressure is known as osmotic pressure, when being applied to film salt
When the pressure of water side is more than osmotic pressure, the flow direction of water will reverse, at this point, the water in brine will flow into pure water side, it is above-mentioned existing
As be exactly water reverse osmosis (reverse osmosis, RO) handle basic principle.
105, by continuous demineralizer, reverse osmosis produced water is handled, obtains the production water of the second quality, the second quality
Production water be used for industrial process waters water source.
Two steps ro production water enters continuous electric desalination technology (electrodeionization, EDI), through advanced desalination
Water afterwards is for users to use.I.e. by continuous demineralizer, reverse osmosis produced water is handled, obtains the production water of the second quality,
The production water of the second quality is used for the water source of industrial process waters.
In the embodiment of the present application, Dual alkali processing unit can effectively remove the hardness of sewage, basicity, at subsequent film
Reason device provides guarantee.Nanofiltration device can effectively remove divalent ion and COD indexs, prevent reverse osmosis membrane from blocking, fouling.One
Grade reverse osmosis concentrated water enrichment facility efficiently solves the problems, such as that chemical wastewater amount is big, and effect is also played to wastewater zero discharge.
As shown in Fig. 2, Fig. 2 is a flow diagram of sewage water treatment method in the embodiment of the present application.
As shown in Figure 2, the production water that recirculating water blowdown water is obtained by Dual alkali processing unit can enter ultrafiltration apparatus,
The mud obtained by Dual alkali processing unit can be handled by desulphurization system.Into the production water of ultrafiltration apparatus, carry out
Self-cleaning filtering etc. obtains ultrafiltration concentrated water and can return again to be handled to Dual alkali processing unit, be obtained into ultrafiltration apparatus
Ultrafiltration produce water, can be handled into nanofiltration device.After ultrafiltration apparatus is handled, it is preset that the rate of recovery can answer first
Threshold value, illustratively, the first preset threshold value can be 90%.
Wherein, water is produced by the nanofiltration that nanofiltration device obtains, first-stage reverse osmosis device can be passed through, using two level reverse osmosis
Saturating device and EDI processing etc., obtained production water can be used for the water source of boiler replenishing water processing system；It is obtained by nanofiltration device
The nanofiltration concentrated water arrived can enter nanofiltration concentrated water collecting pit, enter back into desulphurization system and be handled.At nanofiltration device
After reason, the rate of recovery can answer the second preset threshold value, and illustratively, the second preset threshold value can be 85%.
It is understood that by first-stage reverse osmosis system, the first obtained reverse osmosis produced water can enter two level reverse osmosis
Permeable system, after first-stage reverse osmosis system, the rate of recovery can answer third preset threshold value, and illustratively, third preset threshold value can be with
It is 5%.The first reverse osmosis concentrated water obtained by first-stage reverse osmosis can enter reverse osmosis concentrated water collecting pit, enter back into reverse osmosis
After saturating concentrated water enrichment facility, the reverse osmosis concentrated water that reverse osmosis concentrated water enrichment facility obtains can be handled into desulphurization system；
The reverse osmosis produced water that reverse osmosis concentrated water enrichment facility obtains can be handled into Dual alkali processing unit.
It should be noted that by two-stage reverse osmosis system, the second obtained reverse osmosis produced water can carry out the technologies such as EDI
Processing, obtained production water can be used for the water source of boiler replenishing water processing system；By two-stage reverse osmosis system, second obtained is anti-
Infiltration concentrated water can be returned again to be handled to the first counter-infiltration system.
In the embodiment of the present application, Dual alkali processing unit can effectively remove the hardness of sewage, basicity, at subsequent film
Reason device provides guarantee.Nanofiltration device can effectively remove divalent ion and COD indexs, prevent reverse osmosis membrane from blocking, fouling.One
Grade reverse osmosis concentrated water enrichment facility efficiently solves the problems, such as that chemical wastewater amount is big, and effect is also played to wastewater zero discharge.
The processing method of the sewage in the embodiment of the present application is illustrated above, below in the embodiment of the present application
Sewage-treatment plant illustrates, and as shown in Figure 3A, Fig. 3 A are one embodiment of sewage-treatment plant in the embodiment of the present application
Schematic diagram, including：
Dual alkali processing unit 301 handles sewage for passing through Dual alkali processing unit, obtains the first property
Produce water；
Ultrafiltration apparatus 302 obtains ultrafiltration production water for being handled by the production water of the first property of ultrafiltration apparatus pair；
Nanofiltration device 303 handles ultrafiltration production water for passing through nanofiltration device, obtains nanofiltration production water；
Two steps ro device 304 handles nanofiltration production water for passing through two steps ro device, obtains reverse osmosis
Produce water；
Continuous demineralizer 305, handles the reverse osmosis produced water, obtains the production water of the second quality, and described second
The production water of property is used for the water source of industrial process waters.
Optionally, in some embodiments of the present application, as shown in Figure 3B, Fig. 3 B are sewage disposal in the embodiment of the present application
One embodiment schematic diagram of device.Dual alkali processing unit 301 includes：Machine adds pond 3011 and becomes hole filtering pool 3012；
Dual alkali processing unit 301, specifically for adding pond 3011 except the metal ion and bicarbonate in decontaminated water by machine
Radical ion removes oil removal by becoming hole filtering pool 3012, obtains the production water of the first property.
Optionally, in some embodiments of the present application,
Ultrafiltration apparatus 302 is specifically used for removing the macromolecular substances in the production water of the first property by ultrafiltration apparatus, obtains
Water is produced to ultrafiltration.
Optionally, in some embodiments of the present application,
Nanofiltration device 303 is more than having for preset threshold value specifically for intercepting ultrafiltration to produce water middle-molecular-weihydroxyethyl by nanofiltration device
Machine object and inorganic matter obtain nanofiltration production water.
Optionally, in some embodiments of the present application,
Two steps ro device 304 is specifically used for producing water progress in advance to the nanofiltration by the two steps ro device
Desalination obtains the reverse osmosis produced water.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its arbitrary combination real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or
It partly generates according to the flow or function described in the embodiment of the present application.The computer can be all-purpose computer, special meter
Calculation machine, computer network or other programmable devices.The computer instruction can be stored in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state disk
Solid State Disk (SSD)) etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, the technical solution of the application is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the application
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, above example are only to illustrate the technical solution of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope of each embodiment technical solution of the application that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of processing method of sewage, which is characterized in that including：
Sewage is handled by Dual alkali processing unit, obtains the production water of the first property；
The production water of first property is handled by ultrafiltration apparatus, obtains ultrafiltration production water；
Water is produced to the ultrafiltration to handle, obtain nanofiltration production water by nanofiltration device；
Water is produced to the nanofiltration to handle, obtain reverse osmosis produced water by two steps ro device；
By continuous demineralizer, the reverse osmosis produced water is handled, obtains the production water of the second quality, the second quality
Production water be used for industrial process waters water source.
2. according to the method described in claim 1, it is characterized in that, the Dual alkali processing unit includes：Machine adds pond and variable orifice
Gap filter tank；
It is described that sewage is handled by Dual alkali processing unit, the production water of the first property is obtained, including：
Add pond to remove metal ion and bicarbonate ion in the sewage by the machine, is gone by the change hole filtering pool
Oil removal obtains the production water of first property.
3. method according to claim 1 or 2, which is characterized in that it is described by ultrafiltration apparatus to first property
Production water is handled, and ultrafiltration production water is obtained, including：
By the ultrafiltration apparatus, the macromolecular substances in the production water of first property are removed, obtain the ultrafiltration production water.
4. according to the method described in claim 3, it is characterized in that, described produce at water the ultrafiltration by nanofiltration device
Reason obtains nanofiltration production water, including：
The ultrafiltration is intercepted by the nanofiltration device and produces the organic matter and inorganic matter that water middle-molecular-weihydroxyethyl is more than preset threshold value, is obtained
Water is produced in the nanofiltration.
5. according to the method described in claim 1, it is characterized in that, described produce water by two steps ro device to the nanofiltration
It is handled, obtains reverse osmosis produced water, including：
Water is produced to the nanofiltration by the two steps ro device and carries out pre- desalination, obtains the reverse osmosis produced water.
6. a kind of sewage-treatment plant, which is characterized in that including：
Dual alkali processing unit obtains the production of the first property for being handled sewage by the Dual alkali processing unit
Water；
Ultrafiltration apparatus obtains ultrafiltration production water for being handled the production water of first property by the ultrafiltration apparatus；
Nanofiltration device is handled for producing water to the ultrafiltration by the nanofiltration device, obtains nanofiltration production water；
Two steps ro device handles for producing water to the nanofiltration by the two steps ro device, obtains reverse osmosis
Production water thoroughly；
Continuous demineralizer obtains the production water of the second quality, the second quality for handling the reverse osmosis produced water
Production water be used for industrial process waters water source.
7. sewage-treatment plant according to claim 6, which is characterized in that the Dual alkali processing unit includes：Machine adds
Pond and change hole filtering pool；
The Dual alkali processing unit, specifically for adding pond to remove metal ion and bicarbonate in the sewage by the machine
Radical ion removes oil removal by the change hole filtering pool, obtains the production water of first property.
8. the sewage-treatment plant described according to claim 6 or 7, which is characterized in that
The ultrafiltration apparatus is specifically used for removing the macromolecular complex in the production water of first property by the ultrafiltration apparatus
Matter obtains ultrafiltration production water.
9. sewage-treatment plant according to claim 8, which is characterized in that
The nanofiltration device, it is more than preset threshold value to be specifically used for intercepting the ultrafiltration to produce water middle-molecular-weihydroxyethyl by the nanofiltration device
Organic matter and inorganic matter, obtain nanofiltration production water.
10. sewage-treatment plant according to claim 6, which is characterized in that
The two steps ro device is removed in advance specifically for producing water to the nanofiltration by the two steps ro device
Salt obtains the reverse osmosis produced water.
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Application publication date: 20180907 |