CN109293145A - The method that textile waste is back to Thermal Power Generation Industry - Google Patents
The method that textile waste is back to Thermal Power Generation Industry Download PDFInfo
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- CN109293145A CN109293145A CN201811231893.5A CN201811231893A CN109293145A CN 109293145 A CN109293145 A CN 109293145A CN 201811231893 A CN201811231893 A CN 201811231893A CN 109293145 A CN109293145 A CN 109293145A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/30—Nature of the water, waste water, sewage or sludge to be treated from the textile industry
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A method of textile waste being back to Thermal Power Generation Industry, comprising: use suspended matter in flocculation tank flocculation waste water；Small organic molecule is converted by larger molecular organics using hydrolysis acidification pool；Residual organic substances in waste water are removed using anaerobic/anoxic/aerobic tank；Residual organic substances are aoxidized using Fenton's reaction pond；Use calcium and magnesium ion in softening sedimentation basin removal waste water water；Use colloidal substance in tube microfiltration membrane removal waste water；The SDI value of waste water is reduced using ultrafiltration apparatus；Desalting processing is carried out to waste water using counter-infiltration system；Further desalination is carried out to waste water using mixed ion exchanger.The present invention realizes weaving-inter-trade recycling of thermoelectricity garden water resource, by the way that stage each in printing-dyeing waste water treatment process production water is back to use Thermal Power Generation Industry, realizes the zero-emission of dyeing waste water, has the advantages that investment is low with operating cost compared with other technique of zero discharge.
Description
Technical field
The present invention relates to sewage treatment reutilization technology field more particularly to a kind of textile waste is back to Thermal Power Generation Industry
Method.
Background technique
With the increasing of Environmental Protection in China dynamics, waste water zero-discharge technology gets up in national fast development, especially exists
Xinjiang, because lacking draining receives water body, the discharge of sewage will be more serious to the destruction of ecological environment, thus waste water zero-emission
Popularization of the discharge technique in Xinjiang is more urgent.But current zero-discharge technology investment and operating cost are excessively high, hinder zero-emission skill
Therefore the popularization and implementation of art develop a kind of economical and effective waste water zero discharge treatment process and technology become and studies instantly
Emphasis.The case where being concentrated in conjunction with Xinjiang textile industry, Thermal Power Generation Industry, by the product reuse in textile industry wastewater treatment process
It is to develop a kind of economical and effective wastewater zero discharge processing to realize the zero-emission of textile industry waste water in Thermal Power Generation Industry
One new approaches of technology.
China Patent Publication No.: CN104016526A discloses a kind of processing method of dyeing waste water.This method include with
Lower step: a. adds decolorising agent, and flocculation aid is added；B. dyeing waste water is squeezed into reaction tube, c. is sampled on rear side of reaction tube, will be sampled
The dyeing waste water come, through precipitating, supernatant is sent into detection device later, and the optical signal pick-up that will test of detection device is at electricity
Signal is sent into controller；D. controller carries out feedback regulation to control valve, has flocculated in e. sedimentation basin according to the electric signal of feeding
At dyeing waste water supernatant draw, photochemical catalyst is added, until it is under light environment and stirs；Photochemical catalyst is by PdO/
BiVO4 composite catalyst and BiVO4/TiO2 composite catalyst, are composed with the weight ratio of 2:2-5, the dosage of photochemical catalyst
For 0.15~0.4g/L.
It can be seen that the processing method has the following problems:
First, the processing method is only handled the waste water, is reached discharge standard, is not answered
For suitable occasion, the reuse ratio for handling waste water is low.
Second, the processing method has only handled suspended matter and colloidal substance in waste water, and there is no handle in waste water
Salt, waste water treatment efficiency are low.
Third, each processing unit is not provided with reflux unit in the processing method, is unable to reach the circular treatment to waste water.
Summary of the invention
For this purpose, the present invention provides a kind of method that textile waste is back to Thermal Power Generation Industry, to overcome in the prior art
The low problem of waste water treatment efficiency.
To achieve the above object, the present invention provides a kind of method that textile waste is back to Thermal Power Generation Industry, comprising:
Step 1: dyeing waste water being entered into biggish suspended solids in fine fack removal waste water, conditioning tank is entered after removal
Homogeneous average is carried out, and provides the waste water that steady matter is surely measured for subsequent treatment process；
Step 2: the waste water is after conditioning tank water outlet, into flocculation tank, flocculation tank add flocculant and
Flocculation aid makes lesser suspended matter in waste water, colloidal substance form wadding by the mixing of flocculant, flocculation aid and waste water, reaction
Waste water is passed through sedimentation basin after flocculation and precipitated, removes oil removal and colloidal substance by body substance；
Step 3: the waste water is organic by the macromolecular in dyeing waste water into hydrolysis acidification pool after sedimentation basin water outlet
Object is converted into small organic molecule；
Step 4: the waste water into anaerobic/anoxic/aerobic tank, and goes to remove water in pond after hydrolysis acidification pool water outlet
Middle major part organic matter, ammonia nitrogen, phosphorus；
Step 5: the waste water, into secondary settling tank, is made in secondary settling tank by gravity after anaerobic/anoxic/aerobic tank water outlet
With realization mud-water separation；
Step 6: the waste water is after secondary clarifier effluent, into Fenton's reaction pond, remaining organic substance in oxidized waste water；
Step 7: after the waste water is discharged from Fenton's reaction pond, into softening sedimentation basin, going to remove water in softening sedimentation basin
In calcium and magnesium ion, and add flocculant and flocculation aid makes reaction in waste water generate magnesium hydroxide and calcium carbonate rapid precipitation；
Step 8: the waste water is transported to tube microfiltration membrane device, passes through tube microfiltration membrane after softening sedimentation basin water outlet
The waste water of softening sedimentation basin is filtered, the colloidal substance in removal softening sedimentation basin water outlet further decreases the hard of waste water
Degree；
Step 9: the waste water, into ultrafiltration apparatus, reduces water by ultrafiltration membrance filter after the water outlet of tubular type micro-filtration
Turbidity, suspended matter, colloidal substance, to reduce the SDI value of waste water；The production water of ultrafiltration enters ultrafiltration and produces pond；
Step 10: after ultrafiltration produces pond production water, primary reverse osmosis system is transported to, through reverse osmosis membrane desalination, level-one reverse osmosis
The production water of permeable system enters intermediate pool and is precipitated；
Step 11: first-stage reverse osmosis produces water after intermediate pool, into two-pass reverse osmosis pond, carries out one again by reverse osmosis membrane
The production water of secondary desalting processing, two-pass reverse osmosis is directly entered carbon removal device, removes the carbon dioxide in water removal, reduces subsequent ion and hands over
The load changed；
Step 12: after carbon removal device produces water, the waste water is transported to mixed ion exchanger, passes through the exchange of yin, yang resin
The salinity in water removal is further removed in effect, makes up to the standard of boiler feedwater, and by being back to use after producing pond homogeneous average
Water is used in boiler of power plant supply.
Further, in the step 3, contain microorganism in the hydrolysis acidification pool, by hydrolysis between microorganism,
Acidification converts larger molecular organics difficult to degrade in dyeing waste water to degradable small organic molecule.
Further, in the step 4, contain microorganism inside the anaerobic/anoxic/aerobic tank, pass through microorganism
Metabolism go water removal in most organic matter, ammonia nitrogen and phosphorus.
Further, in the step 6, ferrous sulfate and hydrogen peroxide have been added in the Fenton's reaction pond, the two is anti-
The free radical carboxyl with strong oxidizing property should be generated, with organic matter remaining in oxidized waste water.
Further, in the step 7, sodium hydroxide and sodium carbonate have been added in the softening sedimentation basin, with removal
Calcium ions and magnesium ions in water.
Further, the precipitation of calcium carbonate generated in the step 7 can direct reuse to power plant wet desulfurizing process.
Further, the concentrated water of the tubular type micro-filtration described in the step 8 can be back to the softening sedimentation basin with
Circular treatment is carried out to sewage.
Further, in the step 10, NF concentrated water reuse is in the moisturizing of power plant desulfurization island or power plant's coal yard depositing dust water.
Further, in the step 11, concentrated water can be back to the first-stage reverse osmosis in the two-pass reverse osmosis pond
Pond is to carry out circular treatment.
Further, power is provided for the transport of the waste water using pump in the system.
Compared with prior art, the beneficial effects of the present invention are, the present invention realize weaving-thermoelectricity garden water resource across
Industry recycles, and by the way that stage each in printing-dyeing waste water treatment process production water is back to use Thermal Power Generation Industry, realizes dyeing waste water
Zero-emission has the advantages that investment is low with operating cost compared with other technique of zero discharge.
Further, power is provided for the transport of the waste water using pump in the system, further improves the side
Treatment effeciency of the method to waste water.
Further, the waste water can pass through fine fack before entrance conditioning tank, and the fine fack is understood big in filtered wastewater
The insoluble object of particle improves the method to the treatment effeciency of waste water.
Further, the conditioning tank can carry out homogeneous average processing to waste water, mention as subsequent treatment process
For the waste water that steady matter is surely measured, the method is further improved to the treatment effeciency of waste water.
Further, flocculant and flocculation aid are equipped in the flocculation tank, in this way, smaller suspended matter and glue in waste water
Body substance can be reacted with the flocculant and the life of flocculation aid hybrid concurrency, generated wadding body substance, can be carried out by subsequent handling
Precipitating, further improves the method to the treatment effeciency of waste water.
Further, contain microorganism in the hydrolysis acidification pool, can will be given up by the hydrolysis of microorganism, acidification
Larger molecular organics difficult to degrade are converted into degradable small organic molecule in water, further improve the method to waste water
Treatment effeciency.
Further, it also is provided with microorganism in the anaerobic/anoxic/aerobic tank, is removed by the metabolism of microorganism
Organic matter, ammonia nitrogen and phosphorus in waste water, further improve the method to the treatment effeciency of waste water.
Further, in the secondary settling tank, the flocculate is settled using gravity, in this way, without adding it
Mud-water separation can be made to will be free from other pollutants in waste water, further improve the method to waste water material by he
Treatment effeciency.
Further, ferrous sulfate and hydrogen peroxide are contained in the Fenton's reaction pond, is reacted by the two, makes to generate in water
Free radical carboxyl with strong oxidizing property further improves described with this with organic substance difficult to degrade in this oxidized waste water
Treatment effeciency of the method to waste water.
Further, sodium hydroxide and sodium carbonate are contained in the softening sedimentation basin, driven away with this calcium in water, magnesium from
Son, and so that reaction in water is generated magnesium hydroxide and precipitation of calcium carbonate by flocculant and flocculation aid, further improve the side
Treatment effeciency of the method to waste water.
Further, the precipitation of calcium carbonate can improve place with direct reuse in the wet desulfurizing process into electric field
Manage the utilization rate of waste water.
Further, the colloidal substance in waste water can be filtered by the tube microfiltration membrane device, be reduced with this useless
The hardness of water further improves the method to the treatment effeciency of waste water.
Further, the ultra-filtration membrane device can turbidity, suspended matter and colloidal substance in filtered wastewater, reduced with this
The SDI value of waste water further improves the method to the treatment effeciency of waste water.
Further the counter-infiltration system includes first-stage reverse osmosis device and second level reverse osmosis apparatus, step by step pair with this
Waste water carry out desalination, and between the second level reverse osmosis apparatus and first-stage reverse osmosis device be equipped with reflux line, with this to waste water into
Row circular treatment further improves the method to the treatment effeciency of waste water.
Further, the mixed ion exchanger further removes the salt in waste water by the exchange interaction of yin and yang resin
Point, and the standard of boiler feedwater is reached, and by being back to use boiler of power plant supply water after producing pond homogeneous average, into one
Step improves the method to the treatment effeciency of waste water.
Further, it is furnished with sludge dewatering system in the technique, in this way, discharge in waste water treatment system can be collected
Sludge carries out concentration and mechanical dehydration, further improves the method to the treatment effeciency of waste water.
Detailed description of the invention
Fig. 1 is the process flow chart for the method that textile waste is back to Thermal Power Generation Industry by the present invention.
Specific embodiment
In order to which objects and advantages of the present invention are more clearly understood, the present invention is further retouched below with reference to embodiment
It states；It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.
Below in conjunction with attached drawing, the forgoing and additional technical features and advantages are described in more detail.
Refering to Figure 1, the process flow chart of its method that textile waste is back to Thermal Power Generation Industry for the present invention, this
Invention proposes a kind of printing and dyeing high-salt wastewater and divides salt evaporative crystallization and purification technique, the technique including the following steps:
Step 1: by dyeing waste water by fine fack removal waste water 50% larger suspended solids, entering tune by rear
It saves pond and carries out homogeneous average, and waste water is delivered to flocculation sedimentation tank by pumping.
Step 2: after waste water enters the flocculation tank, flocculant and flocculation aid are added in flocculation tank, is passed through
Flocculant, the mixing of flocculation aid and waste water, reaction, make lesser suspended matter in waste water, colloidal substance form wadding body substance, and lead to
It crosses subsequent sedimentation basin to be precipitated, achievees the purpose that oil removal, colloidal substance.Flocculation sedimentation tank can remove in waste water
80% suspended solids.
Step 3: waste water enters hydrolysis acidification pool after sedimentation basin water outlet, passes through the hydrolysis of microorganism in pond, acidification
Effect can convert larger molecular organics difficult to degrade in dyeing waste water to the small organic molecule of biochemical degradation, and mention
Rise the effect of subsequent biochemical processing.
Step 4: waste water is after hydrolysis acidification pool water outlet, into anaerobic/anoxic/aerobic tank, in anaerobic/anoxic/good
90% organic matter, ammonia nitrogen, phosphorus in water removal are removed through the metabolism of microorganism in oxygen pond.
Step 5: waste water, into secondary settling tank, is made in secondary settling tank by gravity after the anaerobic/anoxic/aerobic tank water outlet
With realization mud-water separation.
Step 6: waste water is after the secondary clarifier effluent, into Fenton's reaction pond, by added into pond ferrous sulfate and
Hydrogen peroxide makes to generate the free radical carboxyl with strong oxidizing property in waste water, with the refractory organic compounds of oxidized waste water 80%.
Step 7: after waste water is discharged from the Fenton's reaction pond, into softening sedimentation basin, passing through throwing in softening sedimentation basin
The calcium and magnesium ion of adding sodium hydroxide and sodium carbonate to go in water removal, and make waste water intermediate ion by adding flocculant and flocculation aid
It reacts and generates magnesium hydroxide and calcium carbonate rapid precipitation.The sludge main component for softening sedimentation basin is calcium carbonate (according to water
Matter calcium ions and magnesium ions contents is different, and calcium carbonate typically constitutes from 70% or more), can direct reuse to power plant wet desulfurizing process.
Step 8: waste water is transported to tube microfiltration membrane device after softening sedimentation basin water outlet, through pump, passes through tubular type
Microfiltration membranes are filtered the waste water of softening sedimentation basin, the colloidal substance in the softening sedimentation basin water outlet are removed, with further
Reduce the hardness of waste water.It combines by softening depositing technology and tube microfiltration membrane filtering and the hardness of waste water can be reduced to 20mg/L
(individually general softening depositing technology can only reduce the hardness to 200mg/L or so) below.The concentrated water of tubular type micro-filtration is returned
It flows to softening sedimentation basin and carries out circular treatment.
Step 9: waste water is after tubular type micro-filtration water outlet, into ultrafiltration apparatus, by ultrafiltration membrance filter waste water
Suspended matter and colloidal substance to reduce the turbidity of water, to reduce the SDI value of waste water, the SDI value of waste water is made to be less than or equal to 3.
Waste water enters ultrafiltration after filtering and produces pond.
Step 10: the ultrafiltration produces in pond waste water and is transported to primary reverse osmosis system by pump, through reverse osmosis membrane desalination,
The production water of primary reverse osmosis system enters intermediate pool, and NF concentrated water reuse is in the moisturizing of power plant desulfurization island or power plant's coal yard depositing dust water.
The salt content of general dyeing waste water contains in 5000mg/L or so in order to guarantee that concentrated water can be back to use the moisturizing of power plant desulfurization island
Requirement of the salt amount no more than 20000mg/L, first-stage reverse osmosis is only to 3 times of Waste water concentrating, the rate of recovery 75%, first-stage reverse osmosis
Water salt content is produced in 120mg/L or so.
Step 11: it is anti-to deliver into second level by pump through first-stage reverse osmosis production water and after intermediate pool is discharged for waste water
Infiltration, carries out primary desalting processing by reverse osmosis membrane, the production water of two-pass reverse osmosis is directly entered carbon removal device, to go in water removal again
Carbon dioxide, reduce subsequent ion exchange load.The concentrated water of two-pass reverse osmosis then flows back into first-stage reverse osmosis circular treatment.
The salt content that two-pass reverse osmosis produces water is less than or equal to 10mg/L.
Step 12: waste water is transported to mixed ion exchanger by pump, passes through yin, yang resin after carbon removal device production water
Exchange interaction further go water removal in salinity, make conductivity of waste water be less than or equal to 0.2 μ s/cm, reach boiler feedwater
Standard, and by being back to use boiler of power plant supply water after producing pond homogeneous average.
Through detecting, the recycle-water in the process flow at each return water reaches reuse standard.
So far, it has been combined preferred embodiment shown in the drawings and describes technical solution of the present invention, still, this field
Technical staff is it is easily understood that protection scope of the present invention is expressly not limited to these specific embodiments.Without departing from this
Under the premise of the principle of invention, those skilled in the art can make equivalent change or replacement to the relevant technologies feature, these
Technical solution after change or replacement will fall within the scope of protection of the present invention.
The above description is only a preferred embodiment of the present invention, is not intended to restrict the invention；For those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of method that textile waste is back to Thermal Power Generation Industry characterized by comprising
Step 1: dyeing waste water being entered into biggish suspended solids in fine fack removal waste water, conditioning tank is entered after removal and is carried out
Homogeneous average, and the waste water that steady matter is surely measured is provided for subsequent treatment process；
Step 2: the waste water, into flocculation tank, adds flocculant in flocculation tank and helps solidifying after conditioning tank water outlet
Agent makes lesser suspended matter in waste water, colloidal substance form wadding body object by the mixing of flocculant, flocculation aid and waste water, reaction
Waste water is passed through sedimentation basin after flocculation and precipitated, removes oil removal and colloidal substance by matter；
Step 3: the waste water, into hydrolysis acidification pool, the larger molecular organics in dyeing waste water is turned after sedimentation basin water outlet
Turn to small organic molecule；
Step 4: the waste water is after hydrolysis acidification pool water outlet, goes in water removal greatly into anaerobic/anoxic/aerobic tank, and in pond
Partial organic substances, ammonia nitrogen, phosphorus；
Step 5: the waste water is after anaerobic/anoxic/aerobic tank water outlet, into secondary settling tank, passes through gravity reality in secondary settling tank
Existing mud-water separation；
Step 6: the waste water is after secondary clarifier effluent, into Fenton's reaction pond, remaining organic substance in oxidized waste water；
Step 7: after the waste water is discharged from Fenton's reaction pond, into softening sedimentation basin, being gone in water removal in softening sedimentation basin
Calcium and magnesium ion, and adding flocculant and flocculation aid makes reaction in waste water generate magnesium hydroxide and calcium carbonate rapid precipitation；
Step 8: the waste water is transported to tube microfiltration membrane device, by tube microfiltration membrane to soft after softening sedimentation basin water outlet
The waste water for changing sedimentation basin is filtered, and the colloidal substance in removal softening sedimentation basin water outlet further decreases the hardness of waste water；
Step 9: the waste water is after the water outlet of tubular type micro-filtration, into ultrafiltration apparatus, reduces the turbid of water by ultrafiltration membrance filter
Degree, suspended matter, colloidal substance, to reduce the SDI value of waste water；The production water of ultrafiltration enters ultrafiltration and produces pond；
Step 10: after ultrafiltration produces pond production water, primary reverse osmosis system is transported to, through reverse osmosis membrane desalination, first-stage reverse osmosis system
The production water of system enters intermediate pool and is precipitated；
Step 11: first-stage reverse osmosis produces water after intermediate pool, into two-pass reverse osmosis pond, is carried out again by reverse osmosis membrane primary
The production water of desalting processing, two-pass reverse osmosis is directly entered carbon removal device, removes the carbon dioxide in water removal, reduces subsequent ion exchange
Load；
Step 12: after carbon removal device produces water, the waste water is transported to mixed ion exchanger, passes through the exchange interaction of yin, yang resin
The salinity in water removal is further removed, makes up to the standard of boiler feedwater, and by being back to use power plant after producing pond homogeneous average
Water is used in boiler supply.
2. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 3, contain microorganism in the hydrolysis acidification pool, it, will be difficult to degrade in dyeing waste water by hydrolysis, the acidification between microorganism
Larger molecular organics be converted into degradable small organic molecule.
3. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 4, contain microorganism inside the anaerobic/anoxic/aerobic tank, goes in water removal most to have by the metabolism of microorganism
Machine object, ammonia nitrogen and phosphorus.
4. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 6, ferrous sulfate and hydrogen peroxide are added in the Fenton's reaction pond, the two reaction generates the free radical carboxylic with strong oxidizing property
Base, with organic matter remaining in oxidized waste water.
5. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 7, sodium hydroxide and sodium carbonate are added in the softening sedimentation basin, with the calcium ions and magnesium ions gone in water removal, the calcium carbonate of generation
Precipitating can direct reuse to power plant wet desulfurizing process.
6. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
The concentrated water of tubular type micro-filtration described in 8 can be back to the softening sedimentation basin to carry out circular treatment to sewage.
7. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 10, NF concentrated water reuse is in the moisturizing of power plant desulfurization island or power plant's coal yard depositing dust water.
8. the method according to claim 1 that textile waste is back to Thermal Power Generation Industry, which is characterized in that in the step
In 11, concentrated water can be back to the first-stage reverse osmosis pond to carry out circular treatment in the two-pass reverse osmosis pond.
9. the method that textile waste is back to Thermal Power Generation Industry described in -8 any claims according to claim 1, feature
It is, provides power using pump in the system for the transport of the waste water.
10. the method that textile waste is back to Thermal Power Generation Industry described in -8 any claims according to claim 1, feature
It is, system is furnished with sludge dewatering system, the sludge being discharged in the waste water treatment system to be concentrated, mechanical dehydration.
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