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 PDF

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Publication number
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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CN
China
Prior art keywords
water
nanofiltration
ultrafiltration
sewage
obtains
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810300959.5A
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Chinese (zh)
Inventor
金刚刚
张鑫
张强
郑云庆
陈春顺
李协军
于福成
田斌
武翔
陈恩海
刘勇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huarun Electric Power (cangzhou Yun Dong) Co Ltd
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Huarun Electric Power (cangzhou Yun Dong) Co Ltd
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Priority to CN201810300959.5A priority Critical patent/CN108503083A/en
Publication of CN108503083A publication Critical patent/CN108503083A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02Softening water by precipitation of the hardness
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/02Softening water by precipitation of the hardness
    • C02F5/06Softening water by precipitation of the hardness using calcium compounds
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

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

A kind of processing method and sewage-treatment plant of sewage
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.
CN201810300959.5A 2018-04-04 2018-04-04 A kind of processing method and sewage-treatment plant of sewage Pending CN108503083A (en)

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CN103864253A (en) * 2014-03-13 2014-06-18 郭强 Salt-containing wastewater treatment device and method
CN103964609A (en) * 2014-05-16 2014-08-06 天津海普尔膜科技有限公司 Membrane treatment method of landfill leachate concentrate
CN104445788A (en) * 2014-12-24 2015-03-25 新疆德蓝股份有限公司 Zero-emission integrated process for treatment and reuse of high-salinity wastewater
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103833172A (en) * 2014-03-13 2014-06-04 郭强 Salt-containing wastewater treatment method
CN103864253A (en) * 2014-03-13 2014-06-18 郭强 Salt-containing wastewater treatment device and method
CN103964609A (en) * 2014-05-16 2014-08-06 天津海普尔膜科技有限公司 Membrane treatment method of landfill leachate concentrate
CN104445788A (en) * 2014-12-24 2015-03-25 新疆德蓝股份有限公司 Zero-emission integrated process for treatment and reuse of high-salinity wastewater
CN105540967A (en) * 2015-12-09 2016-05-04 大唐国际化工技术研究院有限公司 Processing method for reducing and recycling organic waste water and processing system

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