CN209010281U - Remove nitrogen equipment in gravity rectifier type ion-exchange sewage treatment end - Google Patents
Remove nitrogen equipment in gravity rectifier type ion-exchange sewage treatment end Download PDFInfo
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- CN209010281U CN209010281U CN201821328249.5U CN201821328249U CN209010281U CN 209010281 U CN209010281 U CN 209010281U CN 201821328249 U CN201821328249 U CN 201821328249U CN 209010281 U CN209010281 U CN 209010281U
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Abstract
Nitrogen equipment, including pond body are removed in a kind of gravity rectifier type ion-exchange sewage treatment end, are made of the inhalant region of water flowing from bottom to up, reaction zone and exhalant region, and pass through lower filter screen partition and upper filter screen partition subregion；Inhalant region has water inlet, for accessing sewage；Water flow fairing and ion exchange resin layer are equipped in reaction zone, the former is set to above lower filter screen partition, is rectified into laminar flow regime water flow for that will intake, the latter is made of several ion-exchange resin particles, is denitrogenated for carrying out ion exchange；Sewage is discharged after being denitrogenated processing at the top of exhalant region.The utility model is that scheme is denitrogenated in the efficient low-consume end of sewage treatment, can significantly reduce total nitrogen content in water outlet；Using gravity type ion-exchange, so that efficient ion-exchange is applicable to different scales and denitrogenate demand；The utilization rate that ion exchange resin layer is improved using water flow fairing avoids the effect for influencing ion-exchange reactions in operation or regenerative process because of ion exchange resin unrest layer.
Description
Technical field
The utility model relates to urban wastewater treatment fields, and in particular at a kind of gravity rectifier type ion-exchange sewage
It manages end and removes nitrogen equipment.
Background technique
Town domestic sewage handles engineering, under the status that national economy rapid development, living standards of the people are continuously improved,
State leader drums in optimization of ecological environment, strengthens the multinomial instruction of prevention and cure of pollution, it is anti-that country and place also establish water pollution
Control stringent supervisor's mechanism, and normalization.
Town domestic sewage processing heel row discharges water water quality indicator by existing national standards (GB18918-2012), basic control
Project highest allow concentration of emission (per day) are as follows: COD 50mg/L, BOD5 10mg/L, SS 10mg/L, TN 15mg/L,
NH3-N 5(8) mg/L, TP 0.5mg/L, pH value 6 ~ 9 etc..
In existing treatment process based on biochemical treatment, method has: oxidation ditch process, SBR method, CASS method, activated sludge
Method etc. wants overall up to standard to acquire a certain degree of difficulty, wherein TP, TN index because technical process has limitation or has the problems such as frequent operation
There is risk of exceeding criterion, even if plus with after physico-chemical process dephosphorization, being also only capable of reducing the exceeded risk of TP to a certain extent.
Over nearly 20 ~ 30 years, the country has introduced external A-A-O method synchronous denitrogen dephosphorus technology, after the engineering construction of part
It makes moderate progress compared with above-mentioned treatment process, but T P is up to standard also to lean on physico-chemical process dephosphorization, and main ingredient is NO in TN index3 -,
If anaerobic biological denitrification effect is undesirable, by general physico-chemical process except not falling, so still there is the raised factor of TN to deposit
Especially when having a small amount of trade effluent to abruptly enter to cause impact load, or burst produces an unexpected winner and influences biochemical treatment in winter
In pond when the normal function of microorganism.In addition, discharge standard proposes target again may as country increasingly payes attention to ecological environment
Property there is also.
Ion-exchange is widely used in water treatment field, such as boiler feed water sofening treatment, industrial water de salt treatment, pure
Water preparation, industrial wastewater removing heavy metals etc. treatment effect are fine.But fixed bed fair current runs counter-current regeneration ion exchange
If method has following problems for denitrogenation in urban wastewater treatment end:
1. pressure vessel is limited the use of in microminiature sewage treatment, it is difficult to apply in large and medium-sized sewage disposal process；
2. there are the factors that exchange resin layer causes random layer for fixed bed counter-current regeneration method:
2-1. regenerative agent (NaCl) gravity and Cl-Type strong-base anion-exchange resin is suitable, regenerative agent pump pressure
Being sent into equipment ascending current has upward thrust to exchanger resin；
2-2. regenerated liquid ascending current reynolds number Re substantially exceeds critical Reynolds number Rek2000 ~ 2300, in turbulent shape
State；
- pressed -3. regenerative process includes: that small reverse washing-discharges water regenerate-backwash-just washing totally six step, operate cumbersome；
4. device memory puts the space effective rate of utilization of ion exchange resin only 70% or so.
Therefore, above-mentioned the shortcomings of the prior art how is solved, is become as the class to be researched and solved of the utility model
Topic.
Summary of the invention
The purpose of the utility model is to provide a kind of gravity rectifier type ion-exchange sewage treatment ends to remove nitrogen equipment.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of gravity rectifier type ion-exchange sewage treatment end remove nitrogen equipment, including at least one sewage treatment list
Member, the sewage treatment unit include a pond body, the pond body by intercommunication water flow from bottom to up inhalant region, reaction zone and exhalant region
It constitutes；Wherein,
Filter screen separator is equipped between the inhalant region and the reaction zone, between the reaction zone and the exhalant region
Equipped with a upper filter screen partition, several limbers are equipped on the upper filter screen partition and the lower filter screen partition；
The inhalant region has a water inlet, and the water inlet is for accessing sewage to be processed；
Water flow fairing and ion exchange resin layer are equipped in the reaction zone；The water flow fairing is set to institute
The top for stating lower filter screen partition is rectified into laminar flow regime water flow for that will intake；If the ion exchange resin layer is handed over by dry ion
Resin particle composition is changed, the partial size of each ion-exchange resin particles is greater than the aperture of the limbers；
Sewage is discharged after being denitrogenated processing via the top of the exhalant region.
Related content in above-mentioned technical proposal is explained as follows:
1. in above scheme, the water flow fairing can be such that reynolds number Re is significantly smaller than and be faced by the water inlet of control lower part
Boundary reynolds number Re k, and guarantee the not random layer of ion exchange resin layer risen with water flow.
2. in above scheme, the upper filter screen partition and the lower filter screen partition include two waffle slabs, two grids
Plate is arranged one on the other, and one layer of aperture of intermediate sandwiched of two waffle slabs is less than the high strength fibre of the ion-exchange resin particles
Net (such as nylon wire) or stainless (steel) wire.
The waffle slab can be plastic material or glass steel material, and the Mesh Diameter on waffle slab can be greater than ion exchange
The partial size of resin particle.It, can muti-piece rectangular horizontal splicing assembling or directly identical with pond body cross section whole with area when prefabricated
Block is installed.
3. in above scheme, the height of the water flow fairing accounts for the 20 ~ 95% of the reaction zone height.Water flow rectification
Several compact arranged rectification holes are equipped in device, the cross-sectional shape of each rectification hole is honeycombed or rectangle.
Plastic material can be used in the water flow fairing, and the aperture of height and rectification hole can flexibly be adjusted by design requirement
It is whole, and it is fixed on it on lower filter screen partition.
4. in above scheme, the wall thickness of each rectification hole is 0.3 ~ 1.5mm, preferably 0.5 ~ 1mm, to meet water flow rectification
The intensity of device needs；The inscribe diameter of each rectification hole is 30 ~ 100mm, and preferably 40 ~ 60mm, inscribe diameter is smaller, reynolds number Re
Smaller, rectification effect is better.
5. in above scheme, the ion-exchange resin particles are Cl-Type strong-base anion-exchange resin particle；It is described
The wet apparent density of ion-exchange resin particles is 0.65 ~ 0.75g/mL, and preferably 0.67 ~ 0.73g/mL, partial size is 0.3 ~ 1mm, excellent
Select 0.4 ~ 0.7mm.
6. in above scheme, the volume of the ion exchange resin layer accounts for the 90 ~ 95% of the reaction zone volume.Main cloth
It is placed in each rectification hole of the water flow fairing and below the top of water flow fairing to the upper filter screen partition
In space；Since ion exchange resin layer can expand in the cleaning step of regeneration treatment, cannot be set as occupying
Whole spaces of reaction zone.
7. in above scheme, further including wastewater influent valve and first flowmeter, being both set on a water inlet pipe, the water inlet
Pipe is connected to the water inlet.
8. in above scheme, the cross section of the pond body is in rectangle；It is each described and when the water treatment unit is multiple
Water treatment unit is set side by side in the horizontal direction.The design of rectangle is conducive to carry out constructing forming by reinforced concrete, and helps
It is spliced and combined in carry out level, handles sewage quantity day up to 10,000 tons, be suitable for the sanitary sewage disposals amounts such as cities and towns biggishly
Area.
Cross section referred to herein refers to the section of horizontal direction.
9. in above scheme, the bottom of the inhalant region offers at least one inverted trapezoidal conduit in the horizontal direction；It is described
Water inlet pipe includes the second water inlet pipe of one first water inlet pipe and at least one, and each second water inlet pipe is intake with described first
Pipe connection；First water inlet pipe is connected to setting with the water inlet, sewage to be processed is introduced the inhalant region；Respectively
Second water inlet pipe is horizontally placed on the bottom of each inverted trapezoidal conduit, and the two corresponds；
Wherein, it is spaced apart along its length on the tube body of each second water inlet pipe and is equipped with several permeable holes, and each institute
It states permeable hole to be arranged obliquely in 45 degree, constitutes the side wall of inverted trapezoidal conduit described in the water outlet water impact of each permeable hole,
It is able to generate water flow reflection, is conducive to generate uniformly distributed water flow.
10. in above scheme, the setting position of first water inlet pipe is higher than the setting position of each second water inlet pipe；
The junction of each second water inlet pipe parallel interval arrangement, first water inlet pipe and each second water inlet pipe is located at described
The center of inhalant region horizontal direction.
It designs, is uniformly introduced sewage into each second water inlet pipe whereby by the first water inlet pipe, sewage is towards each second
The both ends of water inlet pipe are flowed, and uniformly flow out each permeable hole, the uniform fluid flow of inhalant region can be made to flow, complex reaction area
In water flow fairing help to further decrease water flow reynolds number Re.
11. further include outlet pipeline system in above scheme, the outlet pipeline system include more water outlet perforated pipes,
More exit branch, an outlet valve and an outfall sewer；Each water outlet perforated pipe and each exit branch correspond
Connection, each exit branch are connected to the outfall sewer, and the outlet valve is connected on the exit branch.Sewage warp
It denitrogenates and enters in each water outlet perforated pipe after handling from exhalant region, and outfall sewer stream is converged by each exit branch
Out.
12. in above scheme, parallel, spaced-apart is arranged each water outlet perforated pipe in the horizontal direction, so that water outlet is more equal
It is even, wholesome effect is also generated to the ascending current of reaction zone, avoids ascending current disorder.
13. in above scheme, being spaced apart along its length on each water outlet perforated pipe and being equipped with several blastholes, respectively
The aperture of the blasthole is arranged obliquely in 45 degree, further to make water outlet more evenly.
14. further including for carrying out ion regeneration, ion exchange and the pipe-line system of cleaning, the pipe in above scheme
Road system includes more feed liquor perforated pipes, more feed liquor branch pipes, a liquid feed valve and a feed liquor house steward；Each feed liquor perforated pipe
It is connected to each feed liquor branch pipe one-to-one correspondence, each feed liquor branch pipe is connected to the feed liquor house steward, and the liquid feed valve connects
On the feed liquor branch pipe；It further include a drain pipe, the drain pipe passes through the water inlet of a tapping valve and the inhalant region
Connection, and second flowmeter is also provided on the drain pipe.
15. in above scheme, parallel, spaced-apart is arranged each feed liquor perforated pipe in the horizontal direction, regenerated liquid or clear can be made
Wash water more uniformly flows into the exhalant region.
16. in above scheme, being spaced apart along its length on each feed liquor perforated pipe and being equipped with several fluid holes, respectively
The aperture of the fluid hole is arranged obliquely in 45 degree.
The working principle and advantage of the utility model are as follows:
1. proposing that method is denitrogenated in an efficient low-consume end, help to reduce the exceeded wind of town domestic sewage processing total nitrogen
Danger；
2. using gravity type ion-exchange, so that efficient ion-exchange is can be applied to different scales sewage treatment and remove
The demand of nitrogen；
3. making will not in operation or regenerative process using the utilization rate of water flow fairing and raising ion exchange resin layer
The problem of random layer of ion exchange resin layer occurs and influences ion-exchange reactions effect；
4. compared with fixed bed counter-current regeneration method, treatment effect is more stable, regenerates using upper operation, counter-current regeneration method
Agent dosage more saves；
5. using more, by etc. whens segmentation starting, the total nitrogen that always be discharged can be handled taking human as control, maneuverability is used
Water stably reaching standard has good adaptibility to response if national emission standard mentions mark again；
6. reinforced concrete structures can be used in big or middle scale sewage treatment, parallel running is combined using more ponds, in turn again
It is raw；
7. operational administrative is easy, it is easy to accomplish automatic operating.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram (for the B-B cross-section structure diagram of Fig. 3) of the utility model embodiment；
Attached drawing 2 is the A-A profile structure diagram of Fig. 1；
Attached drawing 3 is the top view of Fig. 1；
Attached drawing 4 is the C-C of Fig. 3 to the schematic diagram of the section structure；
Attached drawing 5 is the structural schematic diagram of the utility model embodiment pipe-line system；
Attached drawing 6 is the diagrammatic cross-section that the utility model embodiment is discharged perforated pipe；
Attached drawing 7 is the diagrammatic cross-section of the utility model embodiment feed liquor perforated pipe；
Attached drawing 8 is the diagrammatic cross-section of the second water inlet pipe of the utility model embodiment；
Attached drawing 9 is the structural schematic diagram of the utility model embodiment waffle slab.
In the figures above: 1. inhalant regions；2. reaction zone；3. exhalant region；4. lower filter screen partition；5. upper filter screen partition；6. into
The mouth of a river；7. inverted trapezoidal conduit；8. the first water inlet pipe；9. the second water inlet pipe；10. permeable hole；11. water flow fairing；12. sewage
Inlet valve；13. first flowmeter；14. ion exchange resin layer；15. rectification hole；16. being discharged perforated pipe；17. exit branch；
18. outlet valve；19. outfall sewer；20. blasthole；21. feed liquor perforated pipe；22. feed liquor branch pipe；23. liquid feed valve；24. feed liquor is total
Pipe；25. drain pipe；26. tapping valve；27. second flowmeter；28. fluid hole；29. waffle slab；30. grid.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment: referring to shown in attached drawing 1 ~ 9, nitrogen equipment is removed in a kind of gravity rectifier type ion-exchange sewage treatment end,
Including at least one sewage treatment unit, the sewage treatment unit includes a pond body, and the pond body is by intercommunication water flow from bottom to up
Inhalant region 1, reaction zone 2 and exhalant region 3 constitute；The cross section of the pond body is in rectangle, when the water treatment unit is multiple
When, each water treatment unit is set side by side in the horizontal direction.The design of rectangle is conducive to be built by reinforced concrete
Shape, and facilitate carry out level and splice and combine, sewage quantity is handled day up to 10,000 tons, is suitable for the sanitary sewage disposals amounts such as cities and towns
Biggish area.
Wherein, filter screen separator 4 are equipped between the inhalant region 1 and the reaction zone 2, the reaction zone 2 and described
It is equipped with a upper filter screen partition 5 between exhalant region 3, is equipped on the upper filter screen partition 5 and the lower filter screen partition 4 several logical
Water hole.
The inhalant region 1 has a water inlet 6, and the water inlet 6 is for accessing sewage to be processed；The inhalant region 1
Bottom offers at least one inverted trapezoidal conduit 7 in the horizontal direction；Further include one first water inlet pipe 8 and at least one second into
Water pipe 9, each second water inlet pipe 9 are connected to first water inlet pipe 8；First water inlet pipe 8 connects with the water inlet 6
Logical setting, sewage to be processed is introduced the inhalant region 1；Each second water inlet pipe 9 be horizontally placed on it is each it is described fall
The bottom of trapezoidal conduit 7, the two correspond；It is spaced apart and is equipped with along its length on the tube body of each second water inlet pipe 9
Several permeable holes 10, and (see figure 8) is arranged in 45 degree in each permeable hole 10 obliquely, constitutes the water outlet of each permeable hole 10
The side wall of inverted trapezoidal conduit 7 described in water impact is able to generate water flow reflection, is conducive to generate uniformly distributed water flow.
The setting position of first water inlet pipe 8 is higher than the setting position of each second water inlet pipe 9；Each described second into
The junction of 9 parallel interval of water pipe arrangement, first water inlet pipe 8 and each second water inlet pipe 9 is located at 1 water of inhalant region
Square to center.It designs, is uniformly introduced sewage into each second water inlet pipe 9 by the first water inlet pipe 8, sewage whereby
It is flowed towards the both ends of each second water inlet pipe 9, and uniformly flows out each permeable hole 10, the uniform fluid flow of inhalant region 1 can be made
It flows, the water flow fairing 11 in complex reaction area helps to further decrease water flow reynolds number Re.
Further include wastewater influent valve 12 and first flowmeter 13, is both set on the first water inlet pipe 8.
Water flow fairing 11 and ion exchange resin layer 14 are equipped in the reaction zone 2；The water flow fairing
11 are set to the top of the lower filter screen partition 4, are rectified into laminar flow regime water flow for that will intake, and by the water inlet of control lower part, can make
Reynolds number Re is significantly smaller than critical Reynolds number Rek, and guarantees the not random layer of ion exchange resin risen with water flow.The ion is handed over
It changes resin layer 14 to be made of several ion-exchange resin particles, the partial size of each ion-exchange resin particles is greater than the limbers
Aperture.
The height of the water flow fairing 11 accounts for the 20 ~ 95% of 2 height of reaction zone.It is set in water flow fairing 11
There are several compact arranged rectification holes 15, the cross-sectional shape of each rectification hole 15 is honeycombed or rectangle.Each rectification
The wall thickness in hole 15 is 0.3 ~ 1.5mm, preferably 0.5 ~ 1mm, to meet the intensity needs of water flow fairing；Each rectification hole 15 it is interior
Cutting diameter is 30 ~ 100mm, and preferably 40 ~ 60mm, inscribe diameter is smaller, and water flow reynolds number Re is smaller, and rectification effect is better.
The water flow fairing 11 can be used plastic material, and the aperture of height and rectification hole 15 can be by design requirement spirit
Adjustment living, and it is fixed on it on lower filter screen partition 4.
Wherein, the ion-exchange resin particles are Cl-Type strong-base anion-exchange resin particle；The ion exchange
The wet apparent density of resin particle be 0.65 ~ 0.75g/mL, preferably 0.67 ~ 0.73g/mL, partial size be 0.3 ~ 1mm, preferably 0.4 ~
0.7mm。
The volume of the ion exchange resin layer 14 accounts for the 90 ~ 95% of 2 volume of reaction zone.Mainly it is arranged in the water
Flow the sky of in each rectification hole 15 of the fairing 11 and top of water flow fairing 11 to 5 lower section of upper filter screen partition
Between in；Since ion exchange resin layer can expand in the cleaning step of regeneration treatment, cannot be set as occupying anti-
Answer whole spaces in area 2.
It wherein, further include outlet pipeline system, the outlet pipeline system includes more water outlet perforated pipes 16, more water outlets
Branch pipe 17, an outlet valve 18 and an outfall sewer 19；Each water outlet perforated pipe 16 and each exit branch 17 1 are a pair of
It should be connected to, each exit branch 17 is connected to the outfall sewer 19, and the outlet valve 18 is connected in the exit branch
On 17.Sewage enters in each water outlet perforated pipe 16 after being denitrogenated processing from exhalant region 3, and is converged by each exit branch 17
It flow to the outflow of outfall sewer 19.
Parallel, spaced-apart is arranged each water outlet perforated pipe 16 in the horizontal direction, so that water outlet is more evenly, to reaction zone 2
Ascending current also generates wholesome effect, avoids ascending current disorder.On each water outlet perforated pipe 16 along its length
It is spaced apart and is equipped with several blastholes 20, (see figure 6) is arranged in 45 degree in the aperture of each blasthole 20 obliquely, further to make
Water outlet is more evenly.
It wherein, further include for carrying out ion regeneration, ion exchange and the pipe-line system of cleaning, the pipe-line system includes
More feed liquor perforated pipes 21, more feed liquor branch pipes 22, a liquid feed valve 23 and a feed liquor house steward 24；Each feed liquor perforated pipe 21
Be connected to each feed liquor branch pipe 22 one-to-one correspondence, each feed liquor branch pipe 22 is connected to the feed liquor house steward 24, it is described into
Liquid valve 23 is connected on the feed liquor branch pipe 22；It further include a drain pipe 25, the drain pipe 25 passes through a tapping valve 26 and institute
The water inlet 6 for stating inhalant region 1 is connected to, and is also provided with second flowmeter 27 on the drain pipe 25.
Parallel, spaced-apart is arranged each feed liquor perforated pipe 21 in the horizontal direction, and regenerated liquid or ejected wash water can be made more uniform
Ground flows into the exhalant region 3.It is spaced apart on each feed liquor perforated pipe 21 and sees equipped with several fluid hole 28(along its length
Fig. 7), the aperture of each fluid hole 28 is arranged obliquely in 45 degree.
Wherein, the upper filter screen partition 5 and the lower filter screen partition 4 include two waffle slabs 29, two waffle slabs 29
It is arranged one on the other, one layer of aperture of intermediate sandwiched of two waffle slabs 29 is less than the high strength fibre of the ion-exchange resin particles
Net (such as nylon wire) or stainless (steel) wire.
As shown in figure 9, the waffle slab 29 can be plastic material (or glass steel material), the grid 30 on waffle slab 29
Diameter can be greater than the partial size of ion-exchange resin particles.When prefabricated, can muti-piece rectangular horizontal splicing assembling or directly with area and
The identical monolith in pond body cross section is installed.
The utility model denitrogenate method the following steps are included:
Step 1: pretreatment
Firstly, the nitrogen compound in sewage is aoxidized by aerobic treatment, is nitrified as nitrate (NO3 -Class)；
Secondly, flocculant is put into water, it is clear through coagulating sedimentation and effluent quality after filtration treatment；
Step 2: denitrogenating processing
Firstly, the 2 ion exchange resin layer 14 of reaction zone of the equipment selects Cl-Type strong-base anion-exchange resin
Particle is constituted；
Secondly, containing NO for pretreated3 -Sewage be sent into equipment from the inhalant region 1 of the equipment, and from bottom to top
Operation, flows into the ion-exchange reactions denitrogenated in the reaction zone 2, the chemical formula of the reaction is as follows:
RCl-+NaNO3→RNO3-+NaCl
Wherein, R Cl-Indicate Cl-Type strong-base anion-exchange resin, RNO3-Cl after indicating reaction-By NO3 -It has exchanged
Ion exchange resin；
Then, water after denitrogenating is flowed out via the exhalant region 3 of the equipment by outlet pipeline, when detecting in water outlet
Total values of nitrogen might (TN) stops sewage when reaching preset value and flows into equipment, and one for completing sewage denitrogenates process cycle；
Step 3: regeneration treatment
Firstly, selecting NaCl as regenerative agent, the regenerated liquid that concentration is 6 ~ 10% is configured to water；
Secondly, the regenerated liquid is from top to bottom flowed into the reaction zone 2 by inlet pipe, to ion exchange resin
Layer 14 carries out ion-exchange reactions, and the chemical formula of the reaction is as follows:
RNO3-+NaCl→RCl-+NaNO3；
After the completion of regeneration treatment, step 2 is repeated, denitrogenates process cycle into next.
Wherein, aerobic treatment is the prior art, is referred in the presence of microorganism, in suitable carbon-nitrogen ratio, moisture content
With under the conditions of oxygen etc., by organic matter degradation, it is converted to the biochemical process of humus sample substance.
Wherein, in step 1, in addition to flocculant, investment dephosphorization agent is also needed, total phosphorus (TP) value in water outlet is made to reach small
It is preferred in 0.5mg/L, TP is the smaller the better, otherwise script and NO3 -The Cl of ion exchange occurs-It will be with PO4 3-Ion exchange occurs,
It influences efficiencies of nitrogen removal and to denitrogenate efficiency when operation；
Flocculation aid can also be added, in order to be big by further flocculating in sewage through the flocculated small granular suspended matters of flocculant
The suspended matter of particle, convenient for promoting the clarity of water quality.
In step 2, the preset value of total nitrogen is less than or equal to 15mg/L in water outlet.The preset value is national standard, can pass through increasing
Add sewage treatment unit or shorten the mode in regeneration treatment period and further decrease the total nitrogen content in being discharged, to cope with the following state
Target is promoted.
In step 2, after one for completing sewage denitrogenates process cycle, the ion exchange resin layer 14 includes at this time
The protection zone of the saturation region of lower part, the workspace at middle part and top；R in the saturation regionCl-It has been exchanged for RNO3-,
R in the workspaceCl-R in exchange process, in the protection zoneCl-Only partially it is exchanged for RNO3-。
It designs whereby, ion exchange resin layer can be protected by protection zone, it is avoided to be lost by sewage " breakdown "
The mistake effect of denitrogenating, that is, if protection zone also becomes workspace even protection zone, the total nitrogen in water outlet it is difficult to ensure that not exceeded, this
When ion exchange resin layer ion exchange failed.
In step 3, the concentration of the regenerated liquid preferably 8 ~ 10%.If being lower than 8%, very few Cl- can be to the effect of regeneration treatment
Rate affects, if being higher than 10%, will lead to ion-exchange resin particles excess shrinkage, can bring to the effect of regeneration treatment
It influences.
Wherein, in step 2, the tapping valve 26 and liquid feed valve 23 of first pass hull closure, then open the wastewater influent valve 12 of equipment
And outlet valve 18, contain NO3-Sewage by first flowmeter 13 measure after, from the first water inlet pipe 8 by water inlet 6 enter equipment
Inhalant region 1, water, which flows through the second water inlet pipe 9 of water inlet, uniformly to be continued to flow up after outflow；
Water flow flows into reaction zone 2 upwardly through lower filter screen partition 4, passes through water flow in the lower part of ion exchange resin layer 14
Fairing 11 is rectified, and water flow reynolds number Re is made to be significantly smaller than critical Rek, and the water flow after rectification becomes laminar flow regime water flow,
Ion exchange resin layer 14, which is also raised by water flow to its top, simultaneously is located at 5 lower section of upper filter screen partition；It is anti-that water flows through ion exchange
Ying Hou, into the exhalant region 3 of equipment；
It when water flow rises to 3 top of exhalant region, is discharged by outlet pipeline, water flow enters water outlet perforation by blasthole 20
In pipe 16, enters outfall sewer 19 after the confluence of exit branch 17 and be discharged；When values of nitrogen might (TN) total in water outlet reaches expectation index,
It completes one and denitrogenates process cycle；It closes wastewater influent valve 12 and outlet valve 18 stops water inlet, opening tapping valve 26 makes water level decreasing
At supreme filter screen separator 5, tapping valve 26 is closed, while ion exchange resin layer 14 falls back to the preceding state of operation with downward water flow.
Wherein, in step 3, the regeneration treatment includes three steps of regeneration, displacement and cleaning；
When regeneration, liquid feed valve 23 is first opened by prepared NaCl regenerated liquid, the exhalant region is uniformly sent by inlet pipe
3, regenerated liquid branches to feed liquor branch pipe 22 by feed liquor house steward 24, then flows into feed liquor perforated pipe 21, by feed liquor perforated pipe 21
Multiple fluid holes 28 uniformly flow into exhalant region 3, at this time exhalant region 3 be used as regenerated liquid reserve zone；It is being sent into primary recycling processing
After required regenerated liquid, by taking the concentration of the regenerated liquid is 10% as an example, the volume of regenerated liquid is ion exchange resin layer body at this time
Long-pending half (volume of regenerated liquid and the concentration of regenerated liquid are inversely proportional), highest liquid level is opened in 21 bottom of feed liquor perforated pipe at this time
Tapping valve 26, by 27 control amount of second flowmeter, regenerated liquid is with small flow at a slow speed (i.e. lower than the flow velocity and stream of water flow when denitrogenating processing
Amount) the uniform ion exchange resin layer 14 for flowing downwardly into reaction zone 2 of equipressure, it is down to liquid level at upper filter screen partition 5, closes tapping valve
26；
When displacement, liquid feed valve 23 is opened, clean water (optional tap water) is uniformly sent into reserve zone by inlet pipe,
That is, clean water branches to feed liquor branch pipe 22 by feed liquor house steward 24, then feed liquor perforated pipe 21 is flowed into, by feed liquor perforated pipe 21
Multiple fluid holes 28 uniformly flow into exhalant region 3, until water level reach setting the upper limit；Then tapping valve 26 is opened, is pressed and regeneration
The identical flow small at a slow speed of liquid, by 27 control amount of second flowmeter, adverse current is replaced downwards, until water level is down to upper filter screen partition
5；Displacement can be understood as regenerated second link, and the volume of usual displacement liquid is identical as regenerated liquid.
When cleaning, big tapping valve 26 is opened, quickly cleans ion exchange resin layer 14 downwards with big flow, until setting is clear
When washing flow or/and scavenging period, tapping valve 26, liquid feed valve 23 are closed, regeneration treatment step terminates at this time, repeats step 2.
Wherein, the waste liquid generated when regeneration treatment is discharged via the water inlet 6 and by drain pipe 25.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. nitrogen equipment is removed in a kind of gravity rectifier type ion-exchange sewage treatment end, it is characterised in that:
Including at least one sewage treatment unit, the sewage treatment unit includes a pond body, and the pond body is by intercommunication from bottom to up
Inhalant region, reaction zone and the exhalant region of water flow are constituted；Wherein,
It is equipped with filter screen separator between the inhalant region and the reaction zone, is equipped between the reaction zone and the exhalant region
Several limbers are equipped on one upper filter screen partition, the upper filter screen partition and the lower filter screen partition；
The inhalant region has a water inlet, and the water inlet is for accessing sewage to be processed；
Water flow fairing and ion exchange resin layer are equipped in the reaction zone；The water flow fairing be set to it is described under
The top of filter screen separator is rectified into laminar flow regime water flow for that will intake；The ion exchange resin layer is by several amberlites
Rouge particle is constituted, and the partial size of each ion-exchange resin particles is greater than the aperture of the limbers；
Sewage is discharged after being denitrogenated processing via the top of the exhalant region.
2. equipment according to claim 1, it is characterised in that: the upper filter screen partition and the lower filter screen partition include
Two waffle slabs, two waffle slabs are arranged one on the other, and one layer of aperture of intermediate sandwiched of two waffle slabs is less than the ion exchange
The web of resin particle.
3. equipment according to claim 1, it is characterised in that: it is high that the height of the water flow fairing accounts for the reaction zone
The 20 ~ 95% of degree, several compact arranged rectification holes are equipped in water flow fairing, and the cross-sectional shape of each rectification hole is
Honeycombed or rectangle；The volume of the ion exchange resin layer accounts for the 90 ~ 95% of the reaction zone volume.
4. equipment according to claim 1, it is characterised in that: the ion-exchange resin particles are Cl-Type strong basicity yin from
Sub-exchange resin particle.
5. equipment according to claim 1, it is characterised in that: further include wastewater influent valve and first flowmeter, both
On a water inlet pipe, which is connected to the water inlet.
6. equipment according to claim 1, it is characterised in that: the cross section of the pond body is in rectangle；And at the water
When reason unit is multiple, each water treatment unit is set side by side in the horizontal direction.
7. equipment according to claim 1, it is characterised in that: the bottom of the inhalant region offers at least in the horizontal direction
One inverted trapezoidal conduit；The water inlet pipe include the second water inlet pipe of one first water inlet pipe and at least one, each described second into
Water pipe is connected to first water inlet pipe；First water inlet pipe is connected to setting with the water inlet, to will be to be processed
Sewage introduces the inhalant region；Each second water inlet pipe is horizontally placed on the bottom of each inverted trapezoidal conduit, and the two is one by one
It is corresponding；
Wherein, it is spaced apart along its length on the tube body of each second water inlet pipe and is equipped with several permeable holes, and is each described
Water hole constitutes the side wall of inverted trapezoidal conduit described in the water outlet water impact of each permeable hole in being arranged obliquely.
8. equipment according to claim 7, it is characterised in that: the setting position of first water inlet pipe is higher than each described the
The setting position of two water inlet pipes；Each second water inlet pipe parallel interval arrangement, first water inlet pipe with each described second into
The junction of water pipe is located at the center of the inhalant region horizontal direction.
9. equipment according to claim 1, it is characterised in that: it further include outlet pipeline system, the outlet pipeline system
Including more water outlet perforated pipes, more exit branch, an outlet valve and an outfall sewer；Each water outlet perforated pipe and each institute
It states exit branch and corresponds connection, each exit branch is connected to the outfall sewer, and the outlet valve is connected in institute
It states on exit branch.
10. equipment according to claim 1, it is characterised in that: further include for carrying out ion regeneration, ion exchange and clear
The pipe-line system washed, the pipe-line system include that more feed liquor perforated pipes, more feed liquor branch pipes, a liquid feed valve and a feed liquor are total
Pipe；Each feed liquor perforated pipe is connected to each feed liquor branch pipe one-to-one correspondence, and each feed liquor branch pipe is total with the feed liquor
Pipe connection, the liquid feed valve are connected on the feed liquor branch pipe；Further include a drain pipe, the drain pipe by a tapping valve with
The water inlet of the inhalant region is connected to, and is also provided with second flowmeter on the drain pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821328249.5U CN209010281U (en) | 2018-08-17 | 2018-08-17 | Remove nitrogen equipment in gravity rectifier type ion-exchange sewage treatment end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821328249.5U CN209010281U (en) | 2018-08-17 | 2018-08-17 | Remove nitrogen equipment in gravity rectifier type ion-exchange sewage treatment end |
Publications (1)
| Publication Number | Publication Date |
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| CN209010281U true CN209010281U (en) | 2019-06-21 |
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ID=66830906
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| Application Number | Title | Priority Date | Filing Date |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706788A (en) * | 2018-08-17 | 2018-10-26 | 谢绍舜 | Denitrogenate device and method in gravity rectifier type ion-exchange sewage disposal end |
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2018
- 2018-08-17 CN CN201821328249.5U patent/CN209010281U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706788A (en) * | 2018-08-17 | 2018-10-26 | 谢绍舜 | Denitrogenate device and method in gravity rectifier type ion-exchange sewage disposal end |
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