CN108314269A - A kind of system and method for macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse - Google Patents
A kind of system and method for macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse Download PDFInfo
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- CN108314269A CN108314269A CN201810299480.4A CN201810299480A CN108314269A CN 108314269 A CN108314269 A CN 108314269A CN 201810299480 A CN201810299480 A CN 201810299480A CN 108314269 A CN108314269 A CN 108314269A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 167
- 239000007788 liquid Substances 0.000 title claims abstract description 77
- 239000002699 waste material Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000012528 membrane Substances 0.000 claims abstract description 98
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 80
- 239000011347 resin Substances 0.000 claims abstract description 62
- 229920005989 resin Polymers 0.000 claims abstract description 62
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- 239000011780 sodium chloride Substances 0.000 claims abstract description 40
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 31
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000001728 nano-filtration Methods 0.000 claims abstract description 28
- 150000003839 salts Chemical class 0.000 claims abstract description 23
- 230000008929 regeneration Effects 0.000 claims abstract description 21
- 238000011069 regeneration method Methods 0.000 claims abstract description 21
- 239000010865 sewage Substances 0.000 claims abstract description 19
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 14
- 239000000645 desinfectant Substances 0.000 claims abstract description 12
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 10
- 230000014759 maintenance of location Effects 0.000 claims abstract description 7
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 230000001954 sterilising effect Effects 0.000 claims abstract description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 241000370738 Chlorion Species 0.000 claims description 14
- 229910052799 carbon Inorganic materials 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052757 nitrogen Inorganic materials 0.000 claims description 13
- 239000005416 organic matter Substances 0.000 claims description 13
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 11
- 230000000717 retained effect Effects 0.000 claims description 10
- 239000010802 sludge Substances 0.000 claims description 10
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 8
- 239000005708 Sodium hypochlorite Substances 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 241000894006 Bacteria Species 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 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 description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 238000006396 nitration reaction Methods 0.000 claims description 5
- 239000011734 sodium Substances 0.000 claims description 5
- 229910052708 sodium Inorganic materials 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 238000005660 chlorination reaction Methods 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 238000000746 purification Methods 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 238000005273 aeration Methods 0.000 claims description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 3
- 238000003795 desorption Methods 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 claims description 3
- 239000003643 water by type Substances 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- 229920002301 cellulose acetate Polymers 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 230000004907 flux Effects 0.000 claims description 2
- 239000012510 hollow fiber Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000000108 ultra-filtration Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 239000010808 liquid waste Substances 0.000 abstract description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 10
- 239000000243 solution Substances 0.000 description 8
- 229910002651 NO3 Inorganic materials 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 238000005374 membrane filtration Methods 0.000 description 3
- -1 nitrate anions Chemical class 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000036647 reaction Effects 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical group CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011033 desalting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000909 electrodialysis Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/15—N03-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
-
- 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
- C02F3/28—Anaerobic digestion processes
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)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses the system and method for a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse, and system includes resin adsorption tank, sodium chloride dosing tank, waste liquid pool, denitrification pond, MBR membrane reactors, reuse water tank, nanofiltration membrane component, reverse osmosis membrane assembly, hypochlorite generator；Resin adsorption tank is sent into using macropore denitrogenation resin adsorption technical finesse sewage plant tail water, is regenerated using sodium chloride solution, regeneration liquid waste is first collected to waste liquid pool, and denitrification pond is entered back into, and subsequently enters MBR membrane reactors, and water outlet flows into reuse water tank；It is then sent to nanofiltration membrane component, preparation of the water outlet for new resin regeneration liquid, a concentrated water part is discharged mixing with resin adsorption tank, it is remaining to be further processed into reverse osmosis membrane assembly, the dissolubility salt of 98% or more retention, produces water direct emission, and concentrated water is directly entered hypochlorite generator's electrolysis, disinfection, sterilization of the disinfectant for the water outlet of resin adsorption tank are generated, the processing and reuse of macropore denitrogenation acid-basic regenerated waste liquids in water are realized.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse
System and method.
Background technology
Sewage discharge is the inevitable product of current social development, municipal sewage plant's generally use materialization+biochemistry
Processing mode, discharge tail water in total nitrogen content it is still higher, in order to realize the sustainable development of resource, need such dirt
Water indices are down to limit value hereinafter, the water bodys such as river, lake can be discharged it into.However to total nitrogen in current discharge standard
Content requirement it is stringent, part common process it is difficult to ensure that discharge water body in nitrate nitrogen it is completely up to standard.
Resin adsorption ion-exchange denitrification method have technology maturation, equipment is simple, operational management is convenient, nitrate removal journey
The features such as degree is high, operating cost is low handles the sewage containing a certain concentration nitrate nitrogen, the ion of saturation using ion-exchange
The sodium chloride solution that exchanger resin generally use mass fraction is 5%~8% is regenerated, and the useless of generation is rinsed in regenerative process
Liquid because of chlorion and nitrate ion containing higher concentration, can not direct emission probably cause secondary pollution, but be difficult disposition.
If the disposal difficulties of ion exchange resin regeneration waste liquid can not be efficiently solved, resin ion exchange process is difficult in sewage water denitrification
Field is promoted and application.
Nitrogenous regeneration liquid waste under processing high salt concentration is deposited if only simply using Physical such as electrodialysis, reverse osmosis etc.
It requires high, concentrated water salinity height to be not easy disposition in preceding processing and causes secondary pollution problems；It is to utilize reducing agent also using chemical method
Nitrate in raw water is to remove nitrate, but reaction condition control is relatively stringent, by-product easily causes secondary pollution；According to
Conventional biochemical method, most of microorganism are difficult to survive without taming under the conditions of high salinity, cause denitrification effect bad.
Invention content
In order to solve the above technical problems, the present invention provides a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuses
System and method.
Technical solution is used by the system of the present invention：A kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse are
System, it is characterised in that：Including intake pump, resin adsorption tank, sodium chloride dosing tank, sodium chloride dosing pump, waste liquid pool, denitrification
Pond, MBR membrane reactors, MBR water outlet pumps, reuse water tank, level-one high-pressure pump, nanofiltration membrane component, two level high-pressure pump, reverse osmosis membrane group
Part, hypochlorite generator；
Using macropore denitrogenation resin adsorption technical finesse sewage plant tail water, water is sent to the tree by the intake pump
Fat adsorption tanks, resin are periodically regenerated using sodium chloride solution, and the waste liquid of generation contains a large amount of nitrate anions and chlorion, and waste liquid is first received
Collection enters back into the denitrification pond to the waste liquid pool, adds carbon source and carries out denitrification, and water outlet enters the MBR membrane reactors,
It realizes and is separated by solid-liquid separation and removes part ammonia nitrogen, suspended matter, MBR water outlets flow into the reuse water tank storage.Utilize level-one height
Press pump retains the organic matter of small-molecular-weight the sewage transport in the reuse water tank to the nanofiltration membrane component, and
Partial solubility salt is removed, production water returns to the sodium chloride dosing tank, is used for the preparation of new resin regeneration liquid；The NF membrane
Concentrated water 10%~40% and the resin adsorption tank that component generates are discharged dual disposal, described in remaining 60~90% concentrated water warp
Two level high-pressure pump is delivered to the further advanced treating of the reverse osmosis membrane assembly, and the dissolubility salt of 98% or more retention produces water ratio
Example is 70%, is directly discharged, and concentrated water ratio is 30%, and contains a large amount of chlorion, is directly entered the sodium hypochlorite
Generator is electrolysed, and is generated disinfection, sterilization of the disinfectant for resin adsorption tank water outlet, is realized macropore denitrogenation resin
The processing and reuse of regeneration liquid waste.
Technical solution used by the method is：A kind of method of macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse,
It is characterized by comprising the following steps：
Step 1：Using resin adsorption tank treated sewage plant tail water, is generated after the regular desorption and regeneration of resin and largely contain nitrate anion
With the waste liquid of chlorion, waste liquid is first from inflow waste liquid pool；
Step 2：Waste liquid pool water outlet adds a certain proportion of carbon source, utilizes the effect of activated sludge from denitrification pond is flowed into
And be aerated on a small quantity, the anti-nitration reaction under anaerobic condition is carried out, denitrifying bacterium is by the NO in waste liquid3 -It is reduced to nitrogen, realizes nitre
The removal of acid ion；
Step 3：The water outlet of denitrification pond flows into MBR membrane reactors, by the crown_interception of membrane module, realizes mud-water separation,
Water purification is extracted by MBR water outlet pumps to reuse water tank；
Step 4：Using level-one high-pressure pump by the sewage transport in reuse water tank to nanofiltration membrane component, to a part of organic matter
It is retained, and removes partial solubility salt, production water returns to sodium chloride dosing tank, is used for the preparation of new resin regeneration liquid；
Step 5：Concentrated water caused by nanofiltration membrane component：10%-40% is discharged dual disposal with resin adsorption tank, remaining
60%-90% is delivered to reverse osmosis membrane assembly advanced treating through two level high-pressure pump, and it is straight to produce water for the dissolubility salt of 98% or more retention
Run in and puts.
Step 6：Reverse osmosis membrane assembly concentrated water contains a large amount of chlorion, is directly entered hypochlorite generator and carries out electricity
Solution, generate disinfectant be used for resin adsorption tank water outlet disinfection, realize macropore denitrogenation acid-basic regenerated waste liquids in water processing and
Reuse.
The method of the present invention has the characteristics that and advantageous effect：
It is combined using " denitrification method ", " MBR methods ", " nano filtering process ", " hyperfiltration ", " electrolysis " kinds of processes technology
Mode handle denitrogenation acid-basic regenerated waste liquids in water, pass through the work for successfully cultivating domestication under high salinity due to having been added in denitrification pond
Property sludge flora, therefore sodium chloride content be not higher than 5% when denitrifying bacterium still can express out higher activity, it is higher to ensure
Nitric efficiency；MBR membrane reactors are separated by solid-liquid separation denitrification water outlet, and built-in membrane module can effectively catching activity dirt
Mud, suspended matter and colloid, delivery turbidity are less than 0.1NTU, and it is primality by backwash can to restore film at any time after longtime running
Can, MBR produces water by nanofiltration membrane, is retained to the organic matter of small-molecular-weight, and the sulfate radical of retention part divalent state
Plasma, generated water purification can be directly used for the preparation of new resin regeneration liquid, realize reuse, concentrated water part can mixing,
Remaining to use reverse osmosis membrane filtration, under high pressure, membrane module can retain 98% or more dissolubility salt, and production water can be straight
Row, concentrated water are contained a large amount of chlorion, are electrolysed to it using hypochlorite generator, are generated disinfectant and are gone out for resin adsorption tank
The disinfection of water not only avoids secondary pollution, but also resource is rationally utilized, and realizes the reuse of regeneration liquid waste.
This system is with nitric efficiency is high, delivery turbidity is low, desalting efficiency is high, is not necessarily under stable effluent quality, high salinity
Additional disinfectant, floor space be small, it is easy to operate, automatically control the advantages that degree is high.
Description of the drawings
Fig. 1：The system construction drawing of the embodiment of the present invention；
Fig. 2：The method flow diagram of the embodiment of the present invention.
In figure, 1. intake pumps, 2. resin adsorption tanks, 3. sodium chloride dosing tanks, 4. sodium chloride dosing pumps, 5. waste liquid pools, 6.
Denitrification pond, 7.MBR membrane reactors, 8.MBR water outlet pumps, 9. reuse water tanks, 10. level-one high-pressure pumps, 11. nanofiltration membrane components, 12.
Two level high-pressure pump, 13. reverse osmosis membrane assemblies, 14. hypochlorite generators.
Specific implementation mode
The present invention is understood and implemented for the ease of those of ordinary skill in the art, and the present invention is made into one below in conjunction with the accompanying drawings
The detailed description of step, it should be understood that implementation example described herein is merely to illustrate and explain the present invention, and is not used to limit
The present invention.
Referring to Fig.1, the system of a kind of macropore denitrogenation acid-basic regenerated waste liquids in water processing provided by the invention and reuse, including water inlet
Pump 1, resin adsorption tank 2, sodium chloride dosing tank 3, sodium chloride dosing pump 4, waste liquid pool 5, denitrification pond 6, MBR membrane reactors 7,
It is MBR water outlet pumps 8, reuse water tank 9, level-one high-pressure pump 10, nanofiltration membrane component 11, two level high-pressure pump 12, reverse osmosis membrane assembly 13, secondary
Sodium chlorate generator 14；
Using macropore denitrogenation resin adsorption technical finesse sewage plant tail water, water is sent to described by the intake pump 1
Resin adsorption tank 2,2 water outlet of resin adsorption tank are equipped with total nitrogen on-line computing model, when being discharged total nitrogen close to setting value, open again
Raw program control, is regenerated using sodium chloride solution, by sodium chloride dosing pump 4 by the chlorine of the 5%-8% in sodium chloride dosing tank 3
Change sodium solution to pump to resin adsorption tank 2, realize regenerative process, the waste liquid generated after flushing contain a large amount of nitrate anions and chlorine from
Son, sodium chloride content is 2.0%~3.0% in waste liquid, and nitrate radical content is 600~800mg/L, and waste liquid is first collected to described useless
Liquid pool 5 enters back into the denitrification pond 6, adds certain proportion carbon source, and carbon source is thrown according to water inlet C/N ratios within the scope of 3.5-4.0
Add, using activated sludge effect and be aerated on a small quantity, dissolved oxygen content is set as 0.2-0.5mg/L, carries out under anaerobic condition
Anti-nitration reaction, denitrifying bacterium is by the NO in waste liquid3 -Be reduced to nitrogen, realize the removal of nitrate ion, denitrification be discharged into
Enter the MBR membrane reactors 7, realize and be separated by solid-liquid separation and remove part ammonia nitrogen, suspended matter, MBR water outlets flow into the reuse water tank 9
Storage, the regular backwash of the need of MBR membrane reactors 7, backwash frequency are：Often run backwash in 15 minutes 30 seconds；Utilize the level-one
High-pressure pump 10 is by the sewage transport in the reuse water tank 9 to the nanofiltration membrane component 11, to molecular weight in 150-500 ranges
Organic matter is retained, and removes partial solubility salt, and production water returns to the sodium chloride dosing tank 3, is used for new resin regeneration
The preparation of liquid；The concentrated water 10%-40% that the nanofiltration membrane component 11 generates is discharged dual disposal with the resin adsorption tank, remaining
60%-90% concentrated waters be delivered to 13 further advanced treating of the reverse osmosis membrane assembly through the two level high-pressure pump 12, retain
98% or more dissolubility salt, production water ratio is 70%, is directly discharged, and concentrated water ratio is 30%, and contains a large amount of chlorine
Ion is directly entered the hypochlorite generator 14 and is electrolysed, and generates disinfectant for the resin adsorption tank 2 water outlet
Disinfection, sterilization, realize the processing and reuse of macropore denitrogenation acid-basic regenerated waste liquids in water.The MBR membrane reactors 7, nanofiltration membrane component
11, reverse osmosis membrane assembly 13 is both needed to that soda acid and disinfectant is periodically used to carry out chemical cleaning, and cleaning frequency is a month 1 time per 3-6.
Setting submerged ultrafiltration component and membrane support in the MBR membrane reactors 7 of the present embodiment, membrane material are that PVDF is hollow
Tunica fibrosa, 0.01-0.05 microns of filtering accuracy, permeant flux are 500-1600L/ (m2.d), operating pressure 0.1-0.4MPa,
It produces water turbidity and is less than 0.1NTU, the membrane support is stainless steel.
Between 1-2nm, the molecular weight that can retain organic matter is 150- in the aperture of the nanofiltration membrane component 11 of the present embodiment
500, the form of membrane module is hollow fiber form, and material is polyamide composite film, and the ability for retaining dissolved salts is 20%-
98%, sodium chloride transmitance is 50%-95%, and operating pressure 3.5-20bar, maximum operating temperature is 45 DEG C.
The material of the reverse osmosis membrane assembly 13 of the present embodiment is cellulose acetate tubular type film, and film surface micro-pore diameter is 0.1
Between~10nm, the organic matter of all dissolving salts and molecular weight more than 100 can be retained, to high valence ion and complicated monovalention
Salt rejection rate be more than 99%, run best pH value between 7.5-8.5, operating pressure 10-30bar, maximum operating temperature is
40℃。
Sodium chloride content in 13 concentrated water of reverse osmosis membrane assembly of the present embodiment is 5%-16%, can directly as water inlet,
For the hypochlorite generator 14 electrolysis and generate sodium hypochlorite.
The present embodiment is also configured with carbon source and adds unit, for launching a certain proportion of carbon source into the denitrification pond 6；
The activated sludge flora successfully tamed through high salinity is also added in the denitrification pond 6；It is provided with aeration in the denitrification pond 6
System forms anaerobic environment to promote denitrifying generation for the limited aeration into the denitrification pond 6.
The system of the present embodiment can realize PLC Automatic Controls.
The present invention is using " denitrification method ", " MBR methods ", " nano filtering process ", " hyperfiltration ", " electrolysis " kinds of processes technology
The mode being combined carries out the processing and reuse of denitrogenation acid-basic regenerated waste liquids in water, and particular technique principle is as follows：
Acid-basic regenerated waste liquids in water initially enters in denitrification pond, adds the activity dirt for passing through successfully culture domestication under high salinity
Mud flora can adapt to the ring of 0-5% sodium chloride concentrations completely since activated sludge flora has gone through culture in more days and domestication
Border, therefore under the salinity not higher than 5%, the denitrifying bacterium in activated sludge flora remains to keep higher activity, while anti-
Carbon source is also added in nitrification tank, under the conditions of suitable carbon-nitrogen ratio (C/N) and dissolved oxygen (DO), anti-nitration reaction occurs, can have
The removal nitrate nitrogen of effect；Using MBR membrane reactor mud-water separations, the hyperfiltration membrane assembly filtering accuracy built in MBR is for water outlet
0.01-0.05 microns, activated sludge, suspended matter can be retained completely so that production water turbidity is less than 0.1NTU；MBR production water, which uses, to be received
Membrane filtration, between 1-2nm, the molecular weight that can retain organic matter is 150-500, retains dissolving salt in the aperture of nanofiltration membrane component
The ability of class is 20%-98%, and sodium chloride transmitance is 50%-95%, and production water returns to sodium chloride dosing tank, is used for resin regeneration
The preparation of liquid, 10%-40% and the resin adsorption tank of concentrated water are discharged mixing, and remaining 60%-90% uses reverse osmosis membrane filtration, instead
Permeable membrane surface micropore diameter can retain the organic matter of all dissolving salts and molecular weight more than 100 between 0.1~10nm,
Salt rejection rate to high valence ion and complicated monovalention is more than 98%, and the salinity produced in water is almost removed, and can directly be arranged
It puts, the salinity being trapped is all introduced into concentrated water, can be fed directly to hypochlorite generator's electrolysis, and hypochlorite generator is
Combining form, water inlet metering are added into electrolytic cell, and the electrolytically generated sodium hypochlorite of anode and cathode DC power supply is connected by silicon rectifier,
Sodium hypochlorite has strong oxidizing property, can send to the water outlet pipeline of resin adsorption tank and carry out disinfection to water outlet.
Hypochlorite generator's cell reaction equation is as follows：
2NaCl+2H2O→2NaOH+H2↑+Cl2；
2NaOH+Cl2→NaClO+NaCl+H2O；
See Fig. 2, the method for a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse provided by the invention, including it is following
Step：
Step 1：Using 2 treated sewage plant tail water of resin adsorption tank, 2 water outlet of resin adsorption tank is monitored on-line equipped with total nitrogen
Instrument opens reproducer control when being discharged total nitrogen close to setting value, and the used chlorination processes sodium content of resin regeneration is 5%-
8%, the largely waste liquid containing nitrate anion and chlorion is generated after the regular desorption and regeneration of resin, flushing, sodium chloride content is in waste liquid
2.0%~3.0%, nitrate radical content is 600~800mg/L, and waste liquid is first from inflow waste liquid pool 5；
Step 2：The water outlet of waste liquid pool 5 adds a certain proportion of carbon source, carbon source is according to water inlet C/N ratios from denitrification pond 6 is flowed into
Added within the scope of 3.5-4.0, using activated sludge effect and be aerated on a small quantity, dissolved oxygen content is set as 0.2-0.5mg/L,
The anti-nitration reaction under anaerobic condition is carried out, denitrifying bacterium is by the NO in waste liquid3 -It is reduced to nitrogen, realizes going for nitrate ion
It removes；
Step 3：The water outlet of denitrification pond 6 flows into MBR membrane reactors 7, by the crown_interception of membrane module, realizes muddy water point
From water purification is extracted by MBR water outlet pumps 8 to reuse water tank 9, the regular backwash of the need of MBR membrane reactors 7, and backwash frequency is：Often run
Backwash in 15 minutes 30 seconds；
Step 4：Using level-one high-pressure pump 10 by the sewage transport in reuse water tank 9 to nanofiltration membrane component 11, to a part
Organic matter is retained, and removes partial solubility salt, and production water returns to sodium chloride dosing tank 3, for new resin regeneration liquid
It prepares；
Step 5：Concentrated water caused by nanofiltration membrane component 11：10%-40% is discharged dual disposal with resin adsorption tank 2, remains
Remaining 60%-90% is delivered to 13 advanced treating of reverse osmosis membrane assembly, the dissolubility of 98% or more retention through two level high-pressure pump 12
Salt produces water direct emission.
NF membrane can penetrate the sodium ion and chlorion of 50%-95%, can not but penetrate sulfate radical, therefore produce in water
Sodium chloride concentration is higher, can be prepared for new regenerated liquid with reuse；And contain a large amount of sulfate radicals and a small amount of chlorination in concentrated water
Sodium, why 10-40% is discharged, and 60-90% enters reverse osmosis membrane, is that because of reverse osmosis membrane while can intercept sulfate radical and chlorination
Sodium, production water is in line, before this part sulfate radical (a large amount of) and sodium chloride (a small amount of) fully entered concentrated water, and concentrated water will carry out
Electrolysis, excessive sulfate radical, which exists that NaCl electrolysis may be generated, centainly to be interfered, to influence the production of sodium hypochlorite
Come into force rate, so this implementation selection exhausts the concentrated water of a part, to reduce the interference of sulfate radical, in addition, to reach discharge standard
It is required that disinfection of effluent dosage, the sodium chloride solution for not needing to be too many goes to carry out cell reaction, therefore appropriate can also exhaust
A part；
Also, either chlorion, sodium ion, sulfate radical or other ions in concentrated water, can direct emission, to ring
Without influence, the part concentrated water and resin container of the present embodiment are discharged mixing in border, through dilution after it is more preferable.
Step 6：13 concentrated water of reverse osmosis membrane assembly contains a large amount of chlorion, is directly entered the progress of hypochlorite generator 14
Electrolysis generates disinfectant and is used for the disinfection that resin adsorption tank 2 is discharged, realizes the processing of macropore denitrogenation acid-basic regenerated waste liquids in water
And reuse.
The MBR membrane reactors 7, nanofiltration membrane component 11, reverse osmosis membrane assembly 13 of the present embodiment be both needed to periodically to use soda acid and
Disinfectant carries out chemical cleaning, and cleaning frequency is a month 1 time per 3-6.
It should be understood that the part that this specification does not elaborate belongs to the prior art.
It should be understood that the above-mentioned description for preferred embodiment is more detailed, can not therefore be considered to this
The limitation of invention patent protection range, those skilled in the art under the inspiration of the present invention, are not departing from power of the present invention
Profit requires under protected ambit, can also make replacement or deformation, each fall within protection scope of the present invention, this hair
It is bright range is claimed to be determined by the appended claims.
Claims (10)
1. the system of a kind of macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse, it is characterised in that：Including, resin adsorption tank (2),
Sodium chloride dosing tank (3), waste liquid pool (5), denitrification pond (6), MBR membrane reactors (7), MBR water outlet pumps (8), reuse water tank
(9), nanofiltration membrane component (11), reverse osmosis membrane assembly (13), hypochlorite generator (14)；
Sewage plant uses the tail water after macropore denitrogenation resin adsorption technical finesse, send to the resin adsorption tank (2)；The resin
When adsorption tanks (2) are discharged total nitrogen close to setting value, sodium chloride dosing tank (3) injects sodium chloride into the resin adsorption tank (2)
Solution makes the nitrate ion of chlorion and resin surface swap regeneration；The waste liquid that regeneration generates first is collected to described useless
Liquid pool (5) enters back into the denitrification pond (6), adds carbon source and carries out denitrification；Described in denitrification pond (6) water outlet enters
MBR membrane reactors (7) are realized and are separated by solid-liquid separation and remove part ammonia nitrogen, suspended matter, and MBR membrane reactors (7) water outlet flows into institute
Reuse water tank (9) storage is stated, the sewage transport in the reuse water tank (9) to the nanofiltration membrane component (11)；
The nanofiltration membrane component (11) retains the organic matter of small-molecular-weight, and the sulfate radical of retention part divalent state from
Son returns to the sodium chloride dosing tank (3) by the production water after the nanofiltration membrane component (11), for new resin regeneration liquid
It prepares；A concentrated water part under being retained by the nanofiltration membrane component (11) and the resin adsorption tank (2) water outlet dual disposal, one
Part is delivered to the reverse osmosis membrane assembly (13) further advanced treating；
The reverse osmosis membrane assembly (13) retains 98% or more dissolubility salt, passes through the production after the reverse osmosis membrane assembly (13)
Water ratio is 70%, is directly discharged；Concentrated water ratio under being retained by the reverse osmosis membrane assembly (13) is 30%, and is contained
A large amount of chlorion is directly entered the hypochlorite generator (14) and is electrolysed, and generates disinfectant and is inhaled for the resin
Disinfection, the sterilization of attached tank (2) water outlet, realize the processing and reuse of macropore denitrogenation acid-basic regenerated waste liquids in water.
2. the system of macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 1 and reuse, it is characterised in that：It is described
Setting submerged ultrafiltration component and membrane support in MBR membrane reactors (7), membrane material are PVDF hollow-fibre membranes, filtering accuracy
0.01-0.05 microns, permeant flux is 500-1600L/ (m2.d), operating pressure 0.1-0.4MPa, production water turbidity are less than
0.1NTU, the membrane support are stainless steel.
3. the system of macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 1 and reuse, it is characterised in that：It is described
The aperture of nanofiltration membrane component (11) is between 1-2nm, and the molecular weight that can retain organic matter is 150-500, and the form of membrane module is
Hollow fiber form, material are polyamide composite film, and the ability for retaining dissolved salts is 20%-98%, and sodium chloride transmitance is
50%-95%, operating pressure 3.5-20bar, maximum operating temperature are 45 DEG C.
4. the system of macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 1 and reuse, it is characterised in that：It is described
The material of reverse osmosis membrane assembly (13) is cellulose acetate tubular type film, and film surface micro-pore diameter can retain between 0.1~10nm
All dissolving salts and molecular weight are more than 100 organic matter, and the salt rejection rate to high valence ion and complicated monovalention is more than 98%,
Best pH value is run between 7.5-8.5, operating pressure 10-30bar, maximum operating temperature is 40 DEG C.
5. the system of macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 1 and reuse, it is characterised in that：It is described
Sodium chloride content in reverse osmosis membrane assembly (13) concentrated water is 5%-16%, directly as water inlet, is sent out for the sodium hypochlorite
The electrolysis of raw device (14) simultaneously generates sodium hypochlorite.
6. the system of the processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse according to claim 1-5 any one, special
Sign is：The system is also configured with carbon source and adds unit, for launching a certain proportion of carbon into the denitrification pond (6)
Source；The activated sludge flora successfully tamed through high salinity is also added in the denitrification pond (6)；It is set in the denitrification pond (6)
It is equipped with aerating system, for described denitrification pond (6) the interior limited aeration, forming anaerobic environment to promote denitrifying hair
It is raw.
7. the system of the processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse according to claim 1-5 any one, special
Sign is：Tail water is sent water to the resin adsorption tank (2) by intake pump (1), and sodium chloride dosing tank (3) passes through sodium chloride
Dosing pump (4) injects sodium chloride solution into the resin adsorption tank (2), and MBR membrane reactors (7) water outlet is gone out by MBR
Water pump (8) is sent into reuse water tank (9) storage, and the sewage in the reuse water tank (9) is conveyed by level-one high-pressure pump (10)
To the nanofiltration membrane component (11)；10%-40% concentrated waters under being retained by the nanofiltration membrane component (11) and the resin adsorption
Tank (2) is discharged dual disposal, and remaining 60%-90% concentrated waters are delivered to the reverse osmosis membrane assembly by two level high-pressure pump (12)
(13) further advanced treating.
8. a kind of method of macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse, which is characterized in that include the following steps：
Step 1：Using resin adsorption tank (2) treated sewage plant tail water, is generated after the regular desorption and regeneration of resin and largely contain nitrate anion
With the waste liquid of chlorion, waste liquid is first from inflow waste liquid pool (5)；
Step 2：Waste liquid pool (5) water outlet adds a certain proportion of carbon source, utilizes the work of activated sludge from denitrification pond (6) are flowed into
With and be aerated on a small quantity, carry out the anti-nitration reaction under anaerobic condition, denitrifying bacterium is by the NO in waste liquid3 -It is reduced to nitrogen, is realized
The removal of nitrate ion；
Step 3：Denitrification pond (6) water outlet flows into MBR membrane reactors (7), by the crown_interception of membrane module, realizes muddy water point
From water purification is extracted by MBR water outlet pumps (8) to reuse water tank (9)；
Step 4：Using level-one high-pressure pump (10) by the sewage transport in reuse water tank (9) to nanofiltration membrane component (11), to one
Divide organic matter to be retained, and remove partial solubility salt, production water returns to sodium chloride dosing tank (3), is used for new resin regeneration
The preparation of liquid；
Step 5：Concentrated water caused by nanofiltration membrane component (11)：10%-40% is discharged dual disposal with resin adsorption tank (2), remains
Remaining 60%-90% is delivered to reverse osmosis membrane assembly (13) advanced treating through two level high-pressure pump (12), 98% or more retention it is molten
Solution property salt, produces water direct emission；
Step 6：Reverse osmosis membrane assembly (13) concentrated water contains a large amount of chlorion, is directly entered hypochlorite generator (14) progress
Electrolysis generates the disinfection that disinfectant is used for resin adsorption tank (2) water outlet, realizes the place of macropore denitrogenation acid-basic regenerated waste liquids in water
Reason and reuse.
9. the method for macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 8 and reuse, it is characterised in that：Step
Resin adsorption tank (2) water outlet is equipped with total nitrogen on-line computing model in 1, when being discharged total nitrogen close to setting value, opens reproducer
Control, the used chlorination processes sodium content of resin regeneration are 5%-8%, and sodium chloride content is in generated waste liquid after flushing
2.0%~3.0%, nitrate radical content is 600~800mg/L, in step 2 carbon source according to water inlet C/N ratios within the scope of 3.5-4.0
It adds, dissolved oxygen content is set as 0.2-0.5mg/L.
10. the method for macropore denitrogenation acid-basic regenerated waste liquids in water processing according to claim 8 and reuse, it is characterised in that：Step
The regular backwash of MBR membrane reactors (7) need, backwash frequency are in rapid 3：Often run backwash in 15 minutes 30 seconds；Step 3, step 4, step
MBR membrane reactors (7), nanofiltration membrane component (11), reverse osmosis membrane assembly (13) in rapid 5 are both needed to periodically use soda acid and disinfectant
Chemical cleaning is carried out, cleaning frequency is a month 1 time per 3-6.
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| CN109467285A (en) * | 2018-12-28 | 2019-03-15 | 湖北君集水处理有限公司 | A kind of sewage plant Tailwater Depth is handled to the system and method for III class water quality standard of earth's surface |
| CN110127897A (en) * | 2019-05-20 | 2019-08-16 | 浙江天行健水务有限公司 | Salt hypochlorite generator chlorination equipment and its sterilization method is not added in one kind |
| CN110304759A (en) * | 2019-06-28 | 2019-10-08 | 湖北君集水处理有限公司 | A kind of system and method using denitrification processing acid-basic regenerated waste liquids in water |
| CN110316873A (en) * | 2019-07-22 | 2019-10-11 | 唐山钢铁集团有限责任公司 | A kind of regeneration liquid waste recycling technique |
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| CN115286175A (en) * | 2022-07-15 | 2022-11-04 | 君集环境科技股份有限公司 | Automatically-controlled treatment method of quick-acting denitrification resin regeneration waste liquid |
| CN117735791A (en) * | 2024-02-08 | 2024-03-22 | 威海天辰环保股份有限公司 | Multistage treatment device for industrial high-salinity water desalination |
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| CN114605007A (en) * | 2022-04-08 | 2022-06-10 | 江苏富淼科技股份有限公司 | Device and method for treating nitrate radical exchange resin regeneration waste liquid |
| CN115286175A (en) * | 2022-07-15 | 2022-11-04 | 君集环境科技股份有限公司 | Automatically-controlled treatment method of quick-acting denitrification resin regeneration waste liquid |
| CN117735791A (en) * | 2024-02-08 | 2024-03-22 | 威海天辰环保股份有限公司 | Multistage treatment device for industrial high-salinity water desalination |
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Effective date of registration: 20190520 Address after: 430074 No. 3 Huangjiahu University Town, Hongshan District, Wuhan City, Hubei Province Applicant after: HUBEI JUNJI WATER TREATMENT Co.,Ltd. Address before: 430074 No. 3 Huangjiahu University Town, Hongshan District, Wuhan City, Hubei Province Applicant before: HUBEI JUNJI WATER TREATMENT Co.,Ltd. Applicant before: WUHAN TECHNOLOGY AND BUSINESS UNIVERSITY |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180724 |