CN106115980A - A kind of Industrial Wastewater Treatment reuse technology and system thereof - Google Patents
A kind of Industrial Wastewater Treatment reuse technology and system thereof Download PDFInfo
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- CN106115980A CN106115980A CN201610715919.8A CN201610715919A CN106115980A CN 106115980 A CN106115980 A CN 106115980A CN 201610715919 A CN201610715919 A CN 201610715919A CN 106115980 A CN106115980 A CN 106115980A
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 30
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 21
- 238000005516 engineering process Methods 0.000 title claims abstract description 19
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000000034 method Methods 0.000 claims abstract description 60
- 239000012528 membrane Substances 0.000 claims abstract description 46
- 230000008569 process Effects 0.000 claims abstract description 39
- 239000010865 sewage Substances 0.000 claims abstract description 31
- 238000005345 coagulation Methods 0.000 claims abstract description 25
- 230000015271 coagulation Effects 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 230000001112 coagulating effect Effects 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 4
- 235000001674 Agaricus brunnescens Nutrition 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000460 chlorine Substances 0.000 claims description 3
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical group [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 230000006378 damage Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 230000003647 oxidation Effects 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 description 57
- 239000010408 film Substances 0.000 description 17
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 9
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000010668 complexation reaction Methods 0.000 description 6
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 239000007800 oxidant agent Substances 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 3
- 238000011109 contamination Methods 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- QPJDMGCKMHUXFD-UHFFFAOYSA-N cyanogen chloride Chemical compound ClC#N QPJDMGCKMHUXFD-UHFFFAOYSA-N 0.000 description 2
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 2
- 239000003651 drinking water Substances 0.000 description 2
- 235000020188 drinking water Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 229920002521 macromolecule Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical group [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 239000004155 Chlorine dioxide Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000019398 chlorine dioxide Nutrition 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical group [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000009287 sand filtration Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000002699 waste material Substances 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
- C02F1/44—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
- C02F1/444—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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of Industrial Wastewater Treatment reuse technology, use sewage disinfection treatment unit, MCR processing unit and the RO processing unit being sequentially connected with, including following process step: pretreatment: introduced by industrial wastewater and sewage disinfection treatment unit removes the cyanogen in water by oxidation or method of reducing and removes the complex in water by contact break agent；MCR process: described pretreated sewage enters described MCR processing unit, adds PAC in MCR processing unit and carries out coagulating in preposition coagulation reaction tank；RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains recycle-water.The present invention is by carrying out MCR process before RO processes, it is ensured that the quality of water in entrance RO processing unit, reduces the destruction to RO membrane module, improves the speed of reaction, can be widely applied to field of industrial waste water treatment.
Description
Technical field
The present invention relates to field of industrial waste water treatment, especially relate to a kind of Industrial Wastewater Treatment reuse technology and be
System.
Background technology
Water resources in china total amount is 2.81 × 10,400,000,000 t, and fresh water occupancy volume is only 1/4 per capita, the world per capita, is in the world
One of country of 21 poor-waters and hydropenia.Having more than 400 insufficient water in state-owned more than 600 cities, city of severe water shortage has
110.Along with Regional Economic Development, municipal water demand constantly increases, and water resource is under-supply.Industrial process waters efficiency
Low, recycling rate of waterused is low, causes high expensive, and Economic returns reduces, GDP output is world average level the 1/3 of folk prescription water.
Agricultural water utilization rate is only 40%～50%, and irrigation water effective utilization coefficients is about 0.48.The industry of most cities, the whole nation
Still waste serious with water, average recycling rate of waterused only has 20%～40%, and unit product water consumption quota is high, ten thousand yuan of output values of industry
Water consumption is more than 10 times of developed country.Therefore develop sewage disposal technology, be potentiated and enhanced sewage recycling efficiency, real
Now circulate water re-using, reduce quantity of wastewater effluent, alleviate water resource nervous.
Electroplating wastewater in industrial wastewater, printed wiring board waste water, electronics become with semiconductor waste water, liquid crystal display waste water etc.
Dividing complexity, wherein cyanide wastewater, chromate waste water and complexation waste water these three wastewater recycle rate are the most relatively low, and difficulty is bigger.Described contain
Cyanogen waste water removes the cyanogen in waste water by oxidation reaction, obtains pretreated waste water, and described chromate waste water is anti-by reduction
The Cr VI in water should be removed, obtain pretreated waste water, after described complexation waste water removes complex by contact break agent reaction
Obtaining pretreated waste water, waste water after pretreatment mainly contains the compositions such as BOD, COD, SS.
Existing method uses RO technology that pretreated waste water carries out treatment for reuse, and RO (reverse osmosis) technology almost can
Remove all dissolved matter and microorganisms etc. in water, produce high grade reutilization water, water for industrial use and drinking water source supply can be met
The needs of water.Waste water after conventional pretreatment is provided with coagulation, precipitation, husky filter, activated carbon, UF film before RO system, such as Fig. 4 institute
Showing, and to add PAM, PAM in coagulation be macromolecule organic, PAM Yu RO film is susceptible to irreversible reaction, to RO film
Cause damage, cause the blocking of RO film or scrap in advance, affecting treatment effeciency and the service life of RO.Meanwhile, the method is being entered
Enter in the water before RO system containing substantial amounts of BOD, COD, SS, ammonia nitrogen, affect the disposal ability of RO membrane module, cause frequently
Membrane cleaning and membrane component premature breakdown are even scrapped, and have a strong impact on the processing speed of waste water and cause carrying of cost for wastewater treatment
High.
Summary of the invention
It is an object of the invention to provide a kind of Industrial Wastewater Treatment reuse technology and system thereof, solve at existing industrial wastewater
The problem that science and engineering skill RO membrane module easily blocks, damages.
The technical solution adopted for the present invention to solve the technical problems is: a kind of Industrial Wastewater Treatment reuse technology, uses
Sewage disinfection treatment unit, MCR processing unit and the RO processing unit being sequentially connected with, including following process step:
Pretreatment: industrial wastewater is introduced in sewage disinfection treatment unit by oxidation or method of reducing remove the cyanogen in water and
The complex in water is removed by contact break agent；
MCR process: described pretreated sewage enters described MCR processing unit, preposition coagulation in MCR processing unit
Reaction tank adds PAC and carries out coagulating；MCR (film coagulation reactor) is the combination of coagulation and membrane separation technique, and it uses film
Separate and instead of the precipitation in traditional handicraft and filter element.Coagulation can remove the suspended solid in water and colloid, and film divides
Up to standard from the turbidity that can guarantee that water outlet.The outstanding feature of MCR is maneuverability, can intermittent duty, Quick water exit, with enter RO system
Before system, traditional pretreatment is compared, and has floor space little, cost-effective, easy to operate, the features such as effluent quality is good.RO is (anti-
Infiltration) technology almost can remove whole dissolved matter and microorganisms etc. in water, production high grade reutilization water, can meet industrial
Water and the needs of drinking water source make-up water, but if RO system is arranged, pretreating process measure is improper and insecure maintenance
Operation measures, all would potentially result in Membrane cleaning and membrane component premature breakdown frequently and even scraps.
RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains reuse
Water.
The PH that described MCR processing unit is connected by sequentially pipeline adjusts pond, coagulation reaction tank, MCR membrane cisterna and MCR and produces pond
Constitute, in PH adjusts pond, pretreated sewage PH value is regulated to 8～9, coagulation reaction tank adds PAC and carries out coagulation
Reaction, forms the alumina blossom particles of large volume；Produce at MCR and pond add sodium hypochlorite, kill mushroom, remove the BOD in water,
COD, SS, ammonia nitrogen, to reach the requirement of RO process influent quality.
Described RO processing unit has the cartridge filter and RO membrane module composition that sequentially pipeline connects, and passes through cartridge filter
Make SDI≤5 in water.
A kind of Industrial Wastewater Treatment reclaiming system, this system is by the sewage disinfection treatment unit being sequentially connected with, MCR processing unit
Constitute with RO processing unit；
The PH that described MCR processing unit is connected by sequentially pipeline adjusts pond, coagulation reaction tank, MCR membrane cisterna and MCR and produces pond
Constitute；
Described RO processing unit has the cartridge filter and RO membrane module composition that sequentially pipeline connects, on described RO membrane module
It is provided with to drain back into and uses outlet.
Beneficial effects of the present invention: make use of the synergism of MCR and RO, the film contamination resistance of MCR is strong, strainability
Good, stable effluent quality, and the most still have good treatment effect, thus when water temperature change greatly and is likely to occur low
Temperature (< 5 DEG C) in the case of, the system that nor affects on is run, it is ensured that RO influent quality is excellent, and RO can use and nothing by long-play
Need to clean.Meanwhile, RO membrance separation ability is strong, when there being MCR to ensure its influent quality, gives full play to the stalling characteristic of RO, removes
Many and composition in water, it is ensured that water outlet reaches reuse standard.
Use MCR-RO combination technique process Treated sewage reusing method relatively conventional RO process (" precipitation+sand filtration+activated carbon+
UF+RO ") Treated sewage reusing technique compares, and has an advantage:
1, simple in construction, flow process reduces, and simplifies middle water and enters a series of preprocessing process before RO, and floor space subtracts
Few, treatment effeciency is high, easy to operate, system stability.
2, the coagulating sedimentation in traditional handicraft needs to add PAM flocculant, and for macromolecule organic, PAM with RO film is easy
There is irreversible reaction, RO film is caused damage, cause the blocking of RO film or scrap in advance, affect the treatment effeciency of RO and make
Use the life-span；Existing technique can be added or add PAM on a small quantity, reduces the damage to RO film greatly, extends RO film
Service life.
3, MCR system membranes assembly is hollow-fibre membrane, in unit volume membrane module, and the effective film area of hollow-fibre membrane
Maximum, filters separation efficiency high, good effect of separating solid from liquid, and contamination resistance is strong, can effectively remove the suspended material in water body, go out
Water quality stabilizing.
4, waste water is after MCR processes, and enters SDI≤5 of RO membrane module, RO Membrane cleaning period ratio tradition RO in new technology
Membrane cleaning technique is long, on the one hand can reduce cleaning cost, on the other hand can reduce and clean the mechanical damage or medicament carried
Damage, thus improve the service life of RO.
5, whole system automaticity is high, and treatment effeciency is high, cost-effective, and chemical feeding quantity reduces, engineering one-time investment
After, operating cost is much lower compared with traditional handicraft.
Below with reference to drawings and Examples, the present invention is described in detail.
Accompanying drawing explanation
Fig. 1 is the pretreatment system block diagram of cyanide wastewater in the present invention
Fig. 2 is the pretreatment system block diagram of chromate waste water in the present invention.
Fig. 3 is the pretreatment system block diagram of complexation waste water in the present invention.
Fig. 4 is the recycling processing system block diagram of waste water after traditional pretreatment.
Fig. 5 is the processing system block diagram of present invention waste water after pretreatment.
Detailed description of the invention
Embodiment 1:
A kind of Industrial Wastewater Treatment reclaiming system, as shown in Figure 1, shown in Figure 5, this system is by the sewage disinfection treatment list being sequentially connected with
Unit, MCR processing unit and RO processing unit are constituted；
Described sewage mainly contains the industrial wastewater of cyanogen, and described pretreatment unit includes regulating reservoir 7, the one-level being sequentially connected with
Broken cyanide device 8 and two grades of broken cyanide devices 9.Pretreated waste water is obtained by above-mentioned sewage disinfection treatment unit.
The pH that described MCR processing unit is connected by sequentially pipeline adjusts pond 1, coagulation reaction tank 2, MCR membrane cisterna 3 and MCR product
Pond 4 is constituted；
Described RO processing unit has the cartridge filter 5 and RO membrane module 6 that sequentially pipeline connects to constitute, described RO membrane module
It is provided with on 6 to drain back into and uses outlet.
Said system is used to process the technique of industrial wastewater, including following process step:
Pretreatment: industrial wastewater is introduced in sewage disinfection treatment unit and remove the cyanogen in water by method for oxidation；Described contain
Cyanogen waste water is introduced into regulating reservoir 7 and carries out the regulation of water quality and quantity, enters back into one-level broken cyanide device 8, adjusts pH to 10～11, reaction
Time is 10min～15min, utilizes ORP instrument automatic feeding oxidant (ORP=300～350mv), makes the hydrogen cyanogen root in waste water
Carry out with oxidant reacting (CN-+ClO-+H2O → CNCl+OH-, CNCl+OH-→ CNO-+Cl-+H2O)；Subsequently into two grades
Broken cyanide device 9, adjusts back pH to 6.5～7.0, and appropriate oxidant (ORP=600～650mv) added automatically by recycling ORP instrument,
Make the complete oxidized decomposition of hydrogen cyanogen root (CNO-+ClO-→ CO2 ↑+N2 ↑+Cl-+CO32-) in waste water, go with the form of CO2 and N2
Removing, water outlet (CN-＜ 0.3mg/L) enters organic wastewater regulating reservoir and carries out subsequent treatment.One-level broken cyanide device 8 and two grades of broken cyanide dresses
Putting the main sodium hypochlorite of broken cyanide medicament, the oxidant such as chlorine dioxide used in 9, adding of medicament can use oxidation-reduction potential
Automatically control, obtain pretreated waste water through said method.
MCR process: described pretreated waste water enters described MCR processing unit, preposition coagulation in MCR processing unit
Reaction tank adds PAC, PAM and carries out coagulating；
RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains reuse
Water.
The pH that described MCR processing unit is connected by sequentially pipeline adjusts pond 1, coagulation reaction tank 2, MCR membrane cisterna 3 and MCR product
Pond 4 is constituted, and makes the pH value in PH pond reach 8～9 by addition sodium hydroxide in pretreated sewage in PH adjusts pond 1
Between, the PAC (aluminium polychlorid) adding 50～100ppm in coagulation reaction tank 2 carries out coagulating, forms large volume
Alumina blossom particles.In MCR produces pond 4, add 1～60ppm sodium hypochlorite, kill mushroom, remove the BOD in water, COD, SS, ammonia
Nitrogen, to reach the requirement of RO process influent quality.Described sewage produces in pond 4 at coagulation reaction tank 2, MCR membrane cisterna 3 and MCR
The time of staying is respectively 40min, 120min, 30min.
Described RO processing unit has the cartridge filter 5 and RO membrane module 6 that sequentially pipeline connects to constitute, and is filtered by security personnel
Device 5 makes SDI≤5 in water.Add reducing agent and antisludging agent in the front end of described cartridge filter 5, reducing agent can make entrance protect
Protect chlorine residue≤0.1mg/L in the water of RO system, in order to protect RO membrane module.Described reducing agent is sodium sulfite, and dosage is 2
～10ppm, antisludging agent is little molecule organophosphor series compound, and dosage is 2-5ppm.
In the present embodiment, described MCR membrane module is hollow-fibre membrane, and material is PVDF (Kynoar), membrane module
Average pore size about 0.1 micron, can with in trap water more than any granule of 0.5 micron, uniform pore-size distribution makes film possess
Higher water flux, can alleviate the blocking of fouling membrane and hole simultaneously, improves the contamination resistance of membrane module.
The RO film used in this example is composite membrane, and material is TFC film (aromatic polyamides).
In this example, the waste water quality and the effluent quality that enter MCR-RO system are as shown in the table:
| Project | Pretreated waste water quality | MCR effluent quality | Reverse osmosis water outlet water quality |
| pH | 6.5～7.0 | 6～9 | 6～9 |
| SS(mg/L) | ≤100 | ≤1 | ≤1 |
| COD(mg/L) | ≤100 | ≤40 | ≤1 |
Embodiment 2:
A kind of Industrial Wastewater Treatment reclaiming system, as shown in Fig. 2, Fig. 5, this system is by the sewage disinfection treatment list being sequentially connected with
Unit, MCR processing unit and RO processing unit are constituted；
Described sewage disinfection treatment unit includes regulating reservoir 7, the reduction reaction device 10 being sequentially connected with.Pre-by above-mentioned sewage
Processing unit obtains pretreated waste water.This Wastewater Pretreatment unit mainly carries out pretreatment to chromate waste water.
The pH that described MCR processing unit is connected by sequentially pipeline adjusts pond 1, coagulation reaction tank 2, MCR membrane cisterna 3 and MCR product
Pond 4 is constituted；
Described RO processing unit has the cartridge filter 5 and RO membrane module 6 that sequentially pipeline connects to constitute, described RO membrane module
It is provided with on 6 to drain back into and uses outlet.
Said system is used to process the technique of industrial wastewater, including following process step:
Pretreatment: be Cr VI by pollutant main for chromate waste water, waste water is delivered to regulating reservoir and carries out water quality and quantity
Equilibrium, enters back in reduction reaction device, carries out reduction reaction, and pH adjusts to 2.5～3.0, the response time control at 20min～
30min.Described reducing agent is ferrous sulfate, is trivalent chromium by the hexavalent chrome reduction in waste water.Remove the chromium in waste water, obtain pre-
Waste water after process；
MCR process: described pretreated waste water enters described MCR processing unit, preposition coagulation in MCR processing unit
Reaction tank adds PAC, PAM and carries out coagulating；
RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains reuse
Water.Other are with embodiment 1.
In this example, the waste water quality and the effluent quality that enter MCR-RO system are as shown in the table:
| Project | Pretreated waste water quality | MCR effluent quality | Reverse osmosis water outlet water quality |
| pH | 2.5～3.0 | 6～9 | 6～9 |
| SS(mg/L) | ≤100 | ≤1 | ≤1 |
| Electrical conductivity (us/cm) | ≤4000 | ≤4000 | ≤200 |
| COD(mg/L) | ≤100 | ≤40 | ≤1 |
Embodiment 3:
A kind of Industrial Wastewater Treatment reclaiming system, as shown in Fig. 3, Fig. 5, this system is by the sewage disinfection treatment list being sequentially connected with
Unit, MCR processing unit and RO processing unit are constituted；
Described sewage disinfection treatment unit includes regulating reservoir 7 and the contact break device 11 being sequentially connected with.Located in advance by above-mentioned sewage
Reason unit obtains pretreated waste water.This Wastewater Pretreatment unit mainly carries out pretreatment to complexation waste water.
The pH that described MCR processing unit is connected by sequentially pipeline adjusts pond 1, coagulation reaction tank 2, MCR membrane cisterna 3 and MCR product
Pond 4 is constituted；
Described RO processing unit has the cartridge filter 5 and RO membrane module 6 that sequentially pipeline connects to constitute, described RO membrane module
It is provided with on 6 to drain back into and uses outlet.
Said system is used to process the technique of industrial wastewater, including following process step:
Pretreatment: complexation waste water is delivered to regulating reservoir 7, and the water quality and quantity of equilibrium waste water, subsequently into contact break device 11
In, according to the one-tenth component selections suitable contact break agent of waste water, described contact break agent is mainly generally recapture agent, sodium sulfide or sulphuric acid
Ferrous iron, pH is adjusted according to the different contact break agent of use.After complexation waste water contact break, obtain pretreated waste water；
MCR process: described pretreated waste water enters described MCR processing unit, preposition coagulation in MCR processing unit
Reaction tank adds PAC, PAM and carries out coagulating；
RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains reuse
Water.Other are with embodiment 1.
In this example, the waste water quality and the effluent quality that enter MCR-RO system are as shown in the table:
| Project | Pretreated waste water quality | MCR effluent quality | Reverse osmosis water outlet water quality |
| pH | 5～10 | 6～9 | 6～9 |
| SS(mg/L) | ≤200 | ≤1 | ≤1 |
| Electrical conductivity (us/cm) | ≤4000 | ≤4000 | ≤200 |
| COD(mg/L) | ≤100 | ≤40 | ≤1 |
The above is presently preferred embodiments of the present invention, but the present invention should not be limited to this embodiment and accompanying drawing institute is public
The content opened, thus every without departing from the equivalence completed under spirit disclosed by the invention or amendment, both fall within present invention protection
Scope.
Claims (8)
1. an Industrial Wastewater Treatment reuse technology, it is characterised in that: use the sewage disinfection treatment unit being sequentially connected with, at MCR
Reason unit and RO processing unit, including following process step:
Pretreatment: after cyanogen, chromium and the complex introduced by industrial wastewater in sewage disinfection treatment unit in removal water obtains pretreatment
Sewage；
MCR process: described pretreated sewage enters described MCR processing unit, preposition coagulating in MCR processing unit
Pond adds PAC and carries out coagulating；
RO process: the water outlet entrance RO processing unit after described MCR process, through reverse osmosis advanced process, obtains recycle-water.
2. Industrial Wastewater Treatment reuse technology as claimed in claim 1, it is characterised in that: described MCR processing unit is by sequentially
The PH that pipeline connects adjusts pond, coagulation reaction tank, MCR membrane cisterna and MCR and produces pond composition, by pretreated in PH adjusts pond
Sewage PH value regulates to 8～9, adds PAC and carries out coagulating, form the alumina blossom particles of large volume in coagulation reaction tank；?
MCR produces and adds sodium hypochlorite in pond, kills mushroom, removes the BOD in water, COD, SS, ammonia nitrogen, to reach RO process water inlet water
The requirement of matter.
3. Industrial Wastewater Treatment reuse technology as claimed in claim 2, it is characterised in that: described sewage coagulation reaction tank,
The time of staying that MCR membrane cisterna and MCR produce in pond is respectively 40min, 120min, 30min.
4. Industrial Wastewater Treatment reuse technology as claimed in claim 2 or claim 3, it is characterised in that: described interior addition sodium hydroxide
Carry out pH value regulation；In described coagulation reaction tank, the injected volume of PAC is respectively 50～100ppm, and described MCR produces time chlorine in pond
The injected volume of acid sodium is 1～60ppm.
5. Industrial Wastewater Treatment reuse technology as claimed in claim 1, it is characterised in that: described RO processing unit has sequentially manages
Cartridge filter and RO membrane module that road connects are constituted, and make SDI≤5 in water by cartridge filter.
6. Industrial Wastewater Treatment reuse technology as claimed in claim 5, it is characterised in that: in the front end of described cartridge filter
Adding reducing agent and antisludging agent, reducing agent can make entrance protect chlorine residue≤0.1mg/L in the water of RO membrane cisterna, in order to protect RO film
Assembly.
7. Industrial Wastewater Treatment reuse technology as claimed in claim 6, it is characterised in that: described reducing agent is bisulfite
Sodium, dosage is 2～10ppm, and antisludging agent is little molecule organophosphor series compound, and dosage is 2-5ppm.
8. an Industrial Wastewater Treatment reclaiming system, for realizing the method described in claim 1-8 any one, its feature exists
In: this system is made up of the sewage disinfection treatment unit being sequentially connected with, MCR processing unit and RO processing unit；
The PH that described MCR processing unit is connected by sequentially pipeline adjusts pond, coagulation reaction tank, MCR membrane cisterna and MCR and produces pond structure
Become；
Described RO processing unit has the cartridge filter and RO membrane module composition that sequentially pipeline connects, and described RO membrane module is arranged
Drain back into and use outlet.
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