CN208279466U - A kind of system of macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse - Google Patents
A kind of system of macropore denitrogenation acid-basic regenerated waste liquids in water processing and reuse Download PDFInfo
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- CN208279466U CN208279466U CN201820474827.XU CN201820474827U CN208279466U CN 208279466 U CN208279466 U CN 208279466U CN 201820474827 U CN201820474827 U CN 201820474827U CN 208279466 U CN208279466 U CN 208279466U
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Abstract
The utility model discloses the systems of a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse, including resin adsorption tank, sodium chloride dosing tank, waste liquid pool, denitrification pond, MBR membrane reactor, reuse water tank, nanofiltration membrane component, reverse osmosis membrane assembly, hypochlorite generator；Resin adsorption tank is sent into using macropore denitrogenation resin adsorption technical treatment 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 reactor, and water outlet flows into reuse water tank；It is then sent to nanofiltration membrane component, water outlet is used for the preparation of new resin regeneration liquid, concentrated water a part and resin adsorption tank are discharged mixing, 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 utility model 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
The system of reuse.
Background technique
Sewage discharge is the inevitable product of current social development, and municipal sewage plant generallys 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
Exchanger resin generallys use the sodium chloride solution that mass fraction is 5%~8% and is regenerated, and the useless of generation is rinsed in regenerative process
Liquid because of chloride ion and nitrate ion containing higher concentration, can not direct emission probably cause secondary pollution, but be difficult to dispose.
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 method 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.
Utility model content
In order to solve the above technical problems, the utility model provide a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and
The system of reuse.
The technical scheme adopted by the utility model is a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water and reuse is
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 reactor, MBR water outlet pump, reuse water tank, level-one high-pressure pump, nanofiltration membrane component, second level high-pressure pump, reverse osmosis membrane group
Part, hypochlorite generator；
Using macropore denitrogenation resin adsorption technical treatment sewage plant tail water, water is sent to the tree by the intake pump
Rouge adsorption tanks, resin are periodically regenerated using sodium chloride solution, and the waste liquid of generation contains a large amount of nitrate anions and chloride ion, and waste liquid is first received
Collecting to the waste liquid pool, enter back into the denitrification pond, adds carbon source and carry out denitrification, water outlet enters the MBR membrane reactor,
It realizes and is separated by solid-liquid separation and removes part ammonia nitrogen, suspended matter, MBR water outlet flows into the reuse water tank storage.It is high using the level-one
Press pump retains the sewage transport in the reuse water tank to the nanofiltration membrane component to the organic matter of small-molecular-weight, and
Partial solubility salt is removed, water is produced and returns to the sodium chloride dosing tank, the preparation for new resin regeneration liquid；The nanofiltration membrane
The concentrated water 10%~40% and the resin adsorption tank that component generates are discharged dual disposal, described in remaining 60~90% concentrated water warp
Second 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 chloride ion, 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.
The utility model method have the characteristics that and the utility model has the advantages that
It is combined using " denitrification method ", " MBR method ", " nano filtering process ", " hyperfiltration ", " electrolysis method " 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 added in denitrification pond
Property sludge flora, therefore sodium chloride content be not higher than 5% when denitrifying bacterium still can express higher activity, it is higher to guarantee
Nitric efficiency；MBR membrane reactor is 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 by backwash, can to restore film at any time primality after longtime running
Can, MBR produces water by nanofiltration membrane, retains 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 producing water can be straight
Row, concentrated water are contained a large amount of chloride ion, are electrolysed using hypochlorite generator to it, are generated disinfectant and are gone out for resin adsorption tank
The disinfection and sterilization 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
The advantages that additional disinfectant, occupied area are small, easy to operate, automatic control degree is high.
Detailed description of the invention
Fig. 1: the system construction drawing of the utility model embodiment；
Fig. 2: the work flow diagram of the utility model embodiment.
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 reactor, 8.MBR water outlet pump, 9. reuse water tanks, 10. level-one high-pressure pumps, 11. nanofiltration membrane components, 12.
Second level high-pressure pump, 13. reverse osmosis membrane assemblies, 14. hypochlorite generators.
Specific embodiment
Understand for the ease of those of ordinary skill in the art and implements the utility model, it is practical new to this with reference to the accompanying drawing
Type is described in further detail, it should be understood that and implementation example described herein is only used for describing and explaining the present invention,
It is not used to limit the utility model.
Referring to Fig.1, the system of a kind of macropore denitrogenation acid-basic regenerated waste liquids in water processing provided by the utility model and reuse, including
Intake 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 reactor
7, MBR water outlet pump 8, reuse water tank 9, level-one high-pressure pump 10, nanofiltration membrane component 11, second level high-pressure pump 12, reverse osmosis membrane assembly 13,
Hypochlorite generator 14；
Using macropore denitrogenation resin adsorption technical treatment 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 process 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 rinsing 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 within the scope of 3.5-4.0 according to water inlet C/N ratio
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 reactor 7, realize and be separated by solid-liquid separation and remove part ammonia nitrogen, suspended matter, MBR water outlet flows into the reuse water tank 9
Storage, the MBR membrane reactor 7 need regular backwash, backwash frequency are as follows: every operation backwash in 15 minutes 30 seconds；Utilize the level-one
High-pressure pump 10 by the sewage transport in the reuse water tank 9 to the nanofiltration membrane component 11, to molecular weight in 150-500 range
Organic matter is retained, and removes partial solubility salt, is produced water and is returned to the sodium chloride dosing tank 3, for new resin regeneration
The preparation of liquid；The concentrated water 10%-40% and the resin adsorption tank that the nanofiltration membrane component 11 generates are discharged dual disposal, remaining
60%-90% concentrated water be delivered to the further advanced treating of the reverse osmosis membrane assembly 13 through the second level high-pressure pump 12, retain
98% or more dissolubility salt, producing 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 reactor 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 every 3-6 months 1 time.
Setting submerged ultrafiltration component and membrane support in the MBR membrane reactor 7 of the present embodiment, membrane material are that PVDF is hollow
Tunica fibrosa, 0.01-0.05 microns of filtering accuracy, permeant flux is 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 material.
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 dissolution salts and molecular weight greater 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；Aeration is provided in the denitrification pond 6
System forms anaerobic environment for the limited aeration into the denitrification pond 6 to promote denitrifying generation.
The system of the present embodiment can realize PLC Automatic Control.
The utility model uses " denitrification method ", " MBR method ", " nano filtering process ", " hyperfiltration ", " electrolysis method " kinds of processes
The mode that technology combines 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 concentration since activated sludge flora has gone through culture in more days and domestication completely
Border, therefore under the salinity not higher than 5%, the denitrifying bacterium in activated sludge flora is still able to maintain 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；Water outlet uses MBR membrane reactor mud-water separation, and the hyperfiltration membrane assembly filtering accuracy built in MBR is
0.01-0.05 microns, activated sludge, suspended matter can be retained completely, so that producing 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 in the aperture of nanofiltration membrane component, retains dissolving salt
The ability of class is 20%-98%, and sodium chloride transmitance is 50%-95%, produces water and returns to sodium chloride dosing tank, is used for resin regeneration
The preparation of liquid, the 10%-40% and 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 dissolution salts and molecular weight greater 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, connect the electrolytically generated sodium hypochlorite of anode and cathode DC power supply by silicon rectifier,
Sodium hypochlorite has strong oxidizing property, and the water outlet pipeline to resin adsorption tank can be sent to carry out disinfection 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 workflow of the utility model, comprising the following steps:
Step 1: sewage plant tail water being handled using resin adsorption tank 2,2 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 chloride ion 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 ratio 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 reactor 7, by the crown_interception of membrane module, realizes muddy water point
From water purification is extracted by MBR water outlet pump 8 to reuse water tank 9, and MBR membrane reactor 7 needs regular backwash, backwash frequency are as follows: every operation
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, is produced water and is returned 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% and resin adsorption tank 2 are discharged dual disposal, remain
Remaining 60%-90% is delivered to 13 advanced treating of reverse osmosis membrane assembly, the dissolubility of 98% or more retention through second level high-pressure pump 12
Salt produces water direct emission.
Nanofiltration membrane can penetrate the sodium ion and chloride ion of 50%-95%, can not but penetrate sulfate radical, therefore produce in water
Sodium chloride concentration is higher, can be prepared with reuse for new regenerated liquid；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, produces that 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, do not need too many sodium chloride solution and go to carry out cell reaction, therefore appropriate can also exhaust
A part；
Also, either chloride ion, 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 diluting after it is more preferable.
Step 6: 13 concentrated water of reverse osmosis membrane assembly contains a large amount of chloride ion, is directly entered the progress of hypochlorite generator 14
Electrolysis generates disinfectant and is used for the disinfection and sterilization 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 reactor 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 every 3-6 months 1 time.
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 utility model patent protection scope, those skilled in the art are not departing under the enlightenment of the utility model
Under ambit protected by the claims of this utility model, replacement or deformation can also be made, the utility model is each fallen within
Within protection scope, the utility model is claimed range and should be determined by the appended claims.
Claims (7)
1. the system of a kind of processing of macropore denitrogenation acid-basic regenerated waste liquids in water 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 reactor (7), MBR water outlet pump (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 treatment, 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 chloride ion 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 reactor (7) is realized and is separated by solid-liquid separation and removes part ammonia nitrogen, suspended matter, and MBR membrane reactor (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；Concentrated water a part and the resin adsorption tank (2) water outlet dual disposal under being retained by the nanofiltration membrane component (11), 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；It is 30% by the concentrated water ratio under the reverse osmosis membrane assembly (13) retention, and contains
A large amount of chloride ion is directly entered the hypochlorite generator (14) and is electrolysed, and generates disinfectant and inhales 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: described
Setting submerged ultrafiltration component and membrane support in MBR membrane reactor (7), membrane material are PVDF hollow-fibre membrane, filtering accuracy
0.01-0.05 microns, permeant flux is 500-1600L/ (m2.d), operating pressure 0.1-0.4MPa produces water turbidity and is less than
0.1NTU, the membrane support are stainless steel material.
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: 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: 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 dissolution salts and molecular weight are greater 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: 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 described in -5 any one and reuse according to claim 1, 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 forming anaerobic environment to promote denitrifying hair to described denitrification pond (6) the interior limited aeration
It is raw.
7. the system of the processing of macropore denitrogenation acid-basic regenerated waste liquids in water described in -5 any one and reuse according to claim 1, 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 reactor (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)；By the 10%-40% concentrated water and the resin adsorption under the nanofiltration membrane component (11) retention
Tank (2) is discharged dual disposal, and remaining 60%-90% concentrated water is delivered to the reverse osmosis membrane assembly by second level high-pressure pump (12)
(13) further advanced treating.
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| CN114031242A (en) * | 2021-10-27 | 2022-02-11 | 上海市政工程设计研究总院（集团）有限公司 | Two-stage enhanced denitrification urban domestic sewage treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114031242A (en) * | 2021-10-27 | 2022-02-11 | 上海市政工程设计研究总院（集团）有限公司 | Two-stage enhanced denitrification urban domestic sewage treatment method |
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