CN106517505A - Denitrification filter tank and operation method thereof - Google Patents
Denitrification filter tank and operation method thereof Download PDFInfo
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- CN106517505A CN106517505A CN201611138894.6A CN201611138894A CN106517505A CN 106517505 A CN106517505 A CN 106517505A CN 201611138894 A CN201611138894 A CN 201611138894A CN 106517505 A CN106517505 A CN 106517505A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
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- C02F2101/16—Nitrogen compounds, e.g. ammonia
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Abstract
The invention discloses a denitrification filter tank and an operation method thereof, and belongs to the technical field of sewage treatment. The denitrification filter tank comprises a filter tank body, a water inlet pipe, and a water collection tank A and a water collection tank B which are fixedly arranged on the outer side wall of the upper part of the filter tank body, and further comprises a sand washer arranged at the center of an upper cover of the filter tank body, wherein the water inlet pipe is introduced into the water collection tank A, the filter tank body and the water collection tank B through a distributive pipe A, a distributive pipe B and a distributive pipe C which are in parallel connection; the bottoms of the water collection tank A and the water collection tank B are externally connected with a connecting pipe A and a connecting pipe B respectively; and the connecting pipe A, the connecting pipe B and a confluence pipe are connected through a tee joint at the bottom of the filter tank body. According to the denitrification filter tank, pipelines and valves in parallel-series connection are arranged, and the flow direction of sewage or back washing water is changed, so that the problems that the limited range of quality of water treated by the denitrification filter tank is small and the sand washing manner is single can be solved, a sewage treatment plant can flexibly change the operation state and sand washing manner of the denitrification filter tank according to the water quality condition, and the purpose that the target water quality is achieved is guaranteed.
Description
Technical field
The present invention relates to technical field of sewage, more particularly to a kind of denitrification filter pool and its operation method.
Background technology
In sewage treatment area, the nitrogen pollutant removed in water body is important link, and the removal of nitrogen pollutant
It is critical only that denitrification, therefore, at present, denitrification filter pool is generally acknowledged denitrogenation sharp weapon.Denitrification filter pool in the market
Two kinds are broadly divided into, a kind of is the denitrification filter pool of gravity streaming, is carried out when the filter of the type is different from backwash, are filtered
When, filtered from top to bottom, then need to stop water inlet during backwash, washed away from bottom to top.It is another kind of then be that continuous stream is anti-
Nitrification filter tank, sewage are carried out with filtering simultaneously by filter tank bottom up overflow, backwash, and bottom filtrate is by air-lift device Jing sand suction pipes
Top sand-washing device, the sand after sand-washing device is washed and the waste water to overflow, reaction is transported to, is so moved in circles.
But all there is its respective shortcoming in both denitrification filter pools：Gravity stream denitrification filter pool will to the water quality intake
Ask higher, it is gravity stream to be primarily due to which, and comparatively fast, the contact filtrate time is short, and the denitrifying load of filtrate can not be too for effluent flow rate
Nitrogen pollutant concentration in height, therefore sewage can not be too high, and filtrate utilization rate is low, and usage amount is big；And continuous stream denitrification
Then there is preferable clearance in filter tank for the nitrogen pollutant of higher concentration, for low concentration nitrogen pollutant treatment effect then
It is not good, and its washed-out sand be although it is continuous, but have that washed-out sand is not clean, the problem of local washed-out sand.It is during actually used, dirty
Water factory generally only can select one kind therein due to cost considerations, and this results in and cannot tackle the larger sewage of change of water quality
A difficult problem, and each single backwash of two kinds of denitrification filter pools or washed-out sand mode cannot also tackle the various situations of filtrate.
Jing is retrieved, Chinese invention patent application, publication number：CN102063115A, publication date：2011.05.18, disclose
A kind of real-time automatic backwashing control system of denitrification filter tank and operation method, are provided with the online water turbidity in denitrification filter pool
Sensor, nitrate sensor and turbidimetry, nitric acid salt determinator, are additionally provided with process controller and industrial computer, excessively program control
Device processed is provided with intake pump relay, water inlet multiple relays such as valve relay, these relays Jing interfaces sequentially respectively with accordingly
Pump and Valve controlling connection；The clear water reserviors be additionally provided with the outlet pipe that connects with denitrification filter pool filter material layer top and with anti-nitre
Change the storage basin of filter tank top connection.The operation method of Back Washing Control System, its feature are comprised the following steps：1 starts control
System；2 parameter processings judge；3 drainage procedures；4 independent gas backwashes；5 combined water and air backwashes；6 single water backwashs are washed.This
It is bright suitable for town sewage advanced treating and nitrogenous Industrial Wastewater Treatment but temporarily under test, it is applied to sewage disposal
When, efficiency is poor.
The content of the invention
1. invention technical problem to be solved
For present in prior art, denitrification filter pool washed-out sand mode is single, cannot tackle the larger sewage of change of water quality
Problem, the invention provides a kind of denitrification filter pool and its operation method.It can be realized according to different quality, by flexible
Changeable pipeline is arranged and can reach heavy-duty service, underrun, the purpose of three kinds of state operations of strength backwash, adaptive surface
Extensively.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of denitrification filter pool, including catchmenting that filter tank body, water inlet pipe and filter tank body upper part lateral wall are fixedly installed
Groove A and water leg B, the sand-washing device for also arranging including the upper lid center of filter tank body；Wherein：The water inlet pipe is in parallel
Distributive pipe A, distributive pipe B and distributive pipe C are passed through water leg A, filter tank body and water leg B；The bottom of water leg A and water leg B
External connecting tube A of difference and connecting tube B；Connecting tube A, connecting tube B and collecting pipe are connected by threeway；Collecting pipe passes through threeway again
Connect with connecting tube D and connecting tube E；The bottom of filter tank body is circumscribed with outlet pipe, outlet pipe, connecting tube D also pass through threeway and
Extension tube attached A is communicated；The bottom of the sand-washing device is circumscribed with connecting tube C, and connecting tube C and connecting tube E pass through threeway and extension tube attached B phase
It is logical；The distributive pipe A, distributive pipe B, distributive pipe C, connecting tube A, outlet pipe, connecting tube B, connecting tube C, connecting tube D and connecting tube
Valve is mounted on E；The water leg A and water leg B are communicated by water hole A and water hole B and filter tank body respectively；It is logical
The setting of the pipeline and valve crossing and be connected in series, converts the flow direction of sewage or backwash water, you can solves denitrification filter pool and processes
Water quality restriction scope is little, the single problem of washed-out sand mode so that denitrification filter pool adapts to the water quality of Sewage Plant change, and passes through
Flexible and changeable washed-out sand mode guarantees the state of filtrate, allows sewage treatment plant flexibly to change denitrification filter according to water quality condition
The running status and washed-out sand mode in pond, it is ensured that realize target water quality.
Further technical scheme, the bottom of the sand-washing device are also associated with inserting the sand suction pipe of filtrate bottom, sand suction pipe
Outer wall is cased with air hose；The bottom of sand-washing device is also associated with the filtrate pipe towards filter tank body, clear with the repeatedly for ensureing filtrate
Wash, keep the process performance of filtrate.
Further technical scheme, distributive pipe B are inserted into inside filtrate, and its bottom gap formula is socketed in the outer of air hose
Wall, bottom leave outlet, it is ensured that water outlet downwards, in order to being fully contacted for sewage and filtrate；The bottom of the outlet,
The outer wall close-fit of air hose is socketed with baffle plate, to guide the flow direction of water, is further ensured that being fully contacted for sewage and filtrate.
Further technical scheme, the outlet outer rim of distributive pipe B are also fixedly connected with water-locator, by the flow direction of sewage to
Surrounding is disperseed, and to ensure that sewage is dispersed in filtrate, the filtrate pipe is in downward curved tubulose, delays the dirty of filtrate
Speed, makes filtrate fully clear up in sand-washing device, and the baffle plate is horn-like in downward external-open, and sewage is uniformly drawn again
Lead, keep the uniformity of sewage distribution, and, and air hose synergism, in the presence of air hose inner high voltage gas, to filter
Material is promoted filtrate to prolong filtrate pipe and is flowed up with back-pressure.
Further technical scheme, in cylindrical shape open downwards, water distribution scope is wide for the water-locator, direction vertically to
Under, and horn-like baffle plate plays a part of collaboration, and sewage Uniform Flow is fully contacted in the filtrate, the place of filtrate is improve
Reason efficiency；The air hose is circumscribed with air-lift device, there is provided filtrate prolongs the power moved on sand suction pipe.
Further technical scheme, the bottom of filter tank body are provided with water-distributing device, can be uniformly distributed backwash water, and can
With water after filter of confluxing, water-distributing device top is coated with supporting layer, prevents filterins media run-off, and, also act as uniformly in backwash
The paving of water distribution helps effect；The top half of supporting layer surface sediment filtrate to filter tank body, and bury the water outlet of distributive pipe B completely
Mouthful；The water leg A and water leg B are symmetrical set, to facilitate the arrangement of pipeline.
Further technical scheme, the filter tank body section are square structure, facilitate the fixation and distribution of multi-pipeline, its
Bottom sectional is trapezoidal, to be different from the taper of prior art, delays current by the water speed that the goes out during water outlet of bottom, increases and filter
Time.
A kind of heavy-duty service method of denitrification filter pool, step is：
Step one, valve are arranged：Open valve B, valve D, valve F, valve G and valve H；Close valve A, valve C, valve
Door E and valve I；
Step 2, water flowing：Sewage enters distributive pipe B by water inlet pipe, enters back into water-locator, and is overflow by the middle and lower part of filtrate
Go out；
The flowing of step 3, filtrate：Air-lift device is blown to air hose, and air hose bottom ozzle is blown into sand suction pipe,
The filtrate of filter tank body bottom and part water Jing sand suction pipes are lifted into into sand-washing device, the filtrate after cleaning in sand-washing device enters filter
Expects pipe, is directed into filter tank body from top to bottom by filtrate pipe, and the washed-out sand water of filtrate then enters connecting tube C, then Jing extension tube attacheds B are entered
Wastewater disposal basin；
Step 4, reaction：While step 3, sewage under the guide functions of baffle plate, with the filtrate for moving from top to bottom
It is fully contacted and reacts, the water overflow after process is to filtrate top layer；
Step 5, water conservancy diversion：Water after the process on filtrate top layer enters water leg A and collection respectively through water hole A and water hole B
Tank B, Jing connecting tubes A and connecting tube B are guided to collecting pipe, then Jing connecting tubes D to the clear liquid in water leg A and water leg B respectively
Into extension tube attached A, clear water reserviors are entered by extension tube attached A.
9th, a kind of underrun method of denitrification filter pool, step is：
Step one, valve are arranged：Open valve A, valve C and valve E；Close valve B, valve D, valve F, valve G, valve
Door H and valve I；
Step 2, water flowing：Sewage enters distributive pipe A and distributive pipe C by water inlet pipe, then respectively enters water leg A and catchment
Groove B, then filter tank body is entered respectively through water hole A and water hole B；
Step 3, reaction：Sewage is fully contacted and is reacted with top-down filtrate, and the water after process passes through supporting layer；
Step 4, water conservancy diversion：Through supporting layer water through water-distributing device collection after, after outlet pipe water outlet, Jing extension tube attacheds A
Enter clear water reserviors.
10th, the strength back-washing method of a kind of denitrification filter pool, step is：
Step one, valve are arranged：Open valve D, valve E, valve F and valve I；Close valve A, valve B, valve C, valve
Door G and valve H；
Step 2, water flowing：Backwash water is entered the bottom of filter tank body by extension tube attached A Jing outlet pipes；
Step 3, wash away：Backwash water washes away filtrate, by mistake after backwash water rise upwards Jing after the distribution of bottom water-distributing device
Water hole A and water hole B respectively enter the water leg A and water leg B of both sides；
Step 4, outer row：Backwash water Jing connecting tube A of water leg A and water leg B and connecting tube B are guided to collecting pipe, then
Jing connecting tubes E enter extension tube attached B, enter wastewater disposal basin by extension tube attached B.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, is had the advantages that：
(1) a kind of denitrification filter pool of the invention, by and the pipeline that is connected in series and valve setting, conversion sewage or
The flow direction of backwash water, you can solution denitrification filter pool water quality treatment restriction scope is little, the single problem of washed-out sand mode so that anti-nitre
Change the water quality that filter tank adapts to Sewage Plant change, and guarantee the state of filtrate by flexible and changeable washed-out sand mode, make at sewage
Reason factory can be with running status and washed-out sand mode flexibly according to water quality condition change denitrification filter pool, it is ensured that realize target water quality；
Multiple denitrification filter pools of the present invention can also be connected, to realize being used in conjunction with for polytype denitrification filter pool, it is ensured that water
Matter is up to standard；
(2) a kind of denitrification filter pool of the invention, sand suction pipe and air hose are equipped with, and ensure that the repeatedly of filtrate
Cleaning, keeps the process performance of filtrate；
(3) a kind of denitrification filter pool of the invention, distributive pipe B bottom gap formulas are socketed in the outer wall of air hose, and bottom is stayed
There is outlet, it is ensured that water outlet downwards, in order to being fully contacted for sewage and filtrate；Baffle plate can enter one to guide the flow direction of water
Step ensures being fully contacted for sewage and filtrate；
(4) a kind of denitrification filter pool of the invention, the flow direction of sewage is disperseed by water-locator to surrounding, to ensure that sewage is uniform
It is dispersed in filtrate；The setting of filtrate pipe enables filtrate first to be rinsed by a small amount of water before into sand-washing device；Curved tubule
Setting cause filtrate after having gone out sand-washing device, to remain to the back flushing of water by low discharge so that filtrate is cleaned more
Totally；Baffle plate is horn-like in downward external-open, and sewage is uniformly guided again, keeps the uniformity of sewage distribution, and, and
Air hose synergism, in the presence of air hose inner high voltage gas, to filtrate with back-pressure, promotes filtrate to prolong filtrate pipe to upstream
It is dynamic；
(5) a kind of denitrification filter pool of the invention, in cylindrical shape open downwards, water distribution scope is wide, and direction is hung down for water-locator
Straight and horn-like baffle plate plays a part of collaboration downwards, and sewage Uniform Flow is fully contacted in the filtrate, filtrate is improve
Treatment effeciency；Air-lift device provides filtrate and prolongs the power moved on sand suction pipe；
(6) a kind of denitrification filter pool of the invention, water-distributing device can be uniformly distributed backwash water, it is possible to after filtration of confluxing
Water；Supporting layer prevents filterins media run-off, and, the paving for also acting as water distribution uniformity in backwash helps effect；
(7) a kind of denitrification filter pool of the invention, filter tank body section are square structure, facilitate multi-pipeline fixation and point
Cloth, its bottom sectional are trapezoidal, to be different from the taper of prior art, delay current by the water speed that the goes out during water outlet of bottom, increase
Plus filtration time；
(8) a kind of denitrification filter pool of the invention, the water-locator of open cylindrical shape is horn-like with what is opened downwards downwards
The combination of baffle plate so that enter water energy in the way of being close to laminar flow, slowly contact with filtrate upwards, reduces sewage under turbulent condition
Unprocessed situation about discharging；
(9) a kind of operation method of denitrification filter pool of the invention, possesses various washed-out sand methods, can be according to the state of filtrate
The mode of backwash is selected flexibly, it is ensured that filtrate is in optimum state；
(10) operation method of a kind of denitrification filter pool of the invention, pipe design clever structure, by opening to valve
The switching for being capable of achieving function is closed, it is simple to operate.
Description of the drawings
Fig. 1 is a kind of denitrification filter pool structural representation of the present invention；
Flow graphs of the Fig. 2 for water in the denitrification filter pool running of embodiment 1；
Flow graphs of the Fig. 3 for water in the denitrification filter pool running of embodiment 2；
Flow graphs of the Fig. 4 for water in the denitrification filter pool running of embodiment 3.
Label declaration in schematic diagram：1st, filter tank body；3rd, water inlet pipe；5th, sand-washing device；6th, air-lift device；7th, filtrate pipe；
8th, air hose；9th, sand suction pipe；10th, filtrate；11st, water-distributing device；12nd, supporting layer；21st, water leg A；22nd, water leg B；31st, Fen Shui
Pipe A；32nd, distributive pipe B；33rd, distributive pipe C；34th, connecting tube A；35th, outlet pipe；36th, connecting tube B；37th, connecting tube C；38th, conflux
Pipe；41st, connecting tube D；42nd, connecting tube E；43rd, extension tube attached A；44th, extension tube attached B；81st, baffle plate；211st, water hole A；221st, water hole
B；311st, valve A；321st, valve B；322nd, water-locator；331st, valve C；341st, valve D；351st, valve E；361st, valve F；371、
Valve G；411st, valve H；421st, valve I.
Specific embodiment
For further appreciating that present disclosure, with reference to accompanying drawing, the present invention is described in detail.
Embodiment 1
The denitrification filter pool of the present embodiment, as shown in figure 1, the filter tank body 1, water inlet pipe 3 and filter tank including cuboid-type
Square water leg A21 and square water leg B22 that 1 upper outside wall of body is fixedly installed, also including in the upper lid of filter tank body 1
The sand-washing device 5 arranged at the heart；Wherein：The water inlet pipe 3 distributive pipe A31, distributive pipe B32 in parallel and distributive pipe C33 are logical
Enter water leg A21, filter tank body 1 and water leg B22；Distinguish external connecting tube A34 in the bottom of water leg A21 and water leg B22
With connecting tube B36；Connecting tube A34, connecting tube B36 and collecting pipe 38 are connected by threeway in the bottom of filter tank body 1；Collecting pipe
38 are connected with connecting tube D41 and connecting tube E42 of 1 bottom of filter tank body again by threeway；The bottom of filter tank body 1 is circumscribed with out
Water pipe 35, outlet pipe 35, connecting tube D41 are also communicated by threeway and extension tube attached A43；The bottom of the sand-washing device 5 is circumscribed with company
Adapter C37, connecting tube C37 and connecting tube E42 are communicated by threeway and extension tube attached B44；The distributive pipe A31, distributive pipe B32,
It is respectively mounted in distributive pipe C33, connecting tube A34, outlet pipe 35, connecting tube B36, connecting tube C37, connecting tube D41 and connecting tube E42
There is valve；The water leg A21 and water leg B22 pass through water hole A211 and water hole B221 respectively and filter tank body 1 is communicated.
The denitrification filter pool of the present embodiment, by and the pipeline that is connected in series and valve setting, to convert sewage or anti-
The flow direction of wash water, you can solution denitrification filter pool water quality treatment restriction scope is little, the single problem of washed-out sand mode so that denitrification
Filter tank adapts to the water quality of Sewage Plant change, and guarantees the state of filtrate by flexible and changeable washed-out sand mode, makes sewage disposal
Factory can be with running status and washed-out sand mode flexibly according to water quality condition change denitrification filter pool, it is ensured that realize target water quality.
Embodiment 2
The denitrification filter pool of the present embodiment, basic structure are with embodiment 1, different and the improvement is that：The bottom of sand-washing device 5
End is also associated with inserting the sand suction pipe 9 of 10 bottom of filtrate, and 9 outer wall of sand suction pipe is cased with air hose 8；The bottom of sand-washing device 5 is also connected with
There is the filtrate pipe 7 towards filter tank body 1, to ensure that the repeatedly of filtrate is cleaned, keep the process performance of filtrate.Distributive pipe B32
It is inserted into inside filtrate 10, its bottom gap formula is socketed in the outer wall of air hose 8, outlet is left in bottom, it is ensured that water outlet downwards,
In order to being fully contacted for sewage and filtrate；The bottom of the outlet, is socketed with baffle plate in the outer wall also close-fit of air hose 8
81, to guide the flow direction of water, it is further ensured that being fully contacted for sewage and filtrate.The outlet outer rim of distributive pipe B32 is also fixed
Water-locator 322 is connected with, the flow direction of sewage is disperseed to surrounding, to ensure that sewage is dispersed in filtrate, the filtrate pipe 7
In downward curved tubulose, delay the dropping velocity of filtrate, filtrate is fully cleared up in sand-washing device, the baffle plate 81 is in downward
External-open it is horn-like, sewage is uniformly guided again, the uniformity of sewage distribution is kept, and, and air hose synergism,
In the presence of air hose inner high voltage gas, to filtrate with back-pressure, promote filtrate to prolong filtrate pipe and flow up.The water-locator
322 in cylindrical shapes open downwards, and water distribution scope is wide, and vertically downward, and horn-like baffle plate plays a part of collaboration in direction, by dirt
Water Uniform Flow is fully contacted in the filtrate so that is entered water energy in the way of being close to laminar flow, is slowly contacted with filtrate upwards, subtracts
Lack the unprocessed situation about discharging of sewage under turbulent condition, improve the treatment effeciency of filtrate；The air hose 8 is circumscribed with
Air-lift device 6, is provided filtrate and prolongs the power moved on sand suction pipe by air pump.The bottom of filter tank body 1 is provided with water distribution dress
11 are put, by the stacking of filter block, buckle is interlocked and is made filter block be fixed on 1 bottom of filter tank body, realization is uniformly distributed backwash water, and can
With water after filter of confluxing, 11 top of water-distributing device is coated with supporting layer 12, and supporting layer consists of the cobble of 12～30mm, it is to avoid
The directly contact of filtrate and water-distributing device, prevents filterins media run-off, and, the paving for also acting as water distribution uniformity in backwash helps effect；
The top half of 12 surface sediment filtrate 10 of supporting layer to filter tank body 1, and bury the outlet of distributive pipe B32 completely, it is used
Filtrate is the single quartz sand filter medias of 2～4mm of particle diameter, such as using the single quartzy sand filtration of the size such as 2mm, 4mm or 3mm
Material；The water leg A21 and water leg B22 are symmetrical set, to facilitate the arrangement of pipeline.The filter tank body 1 is square
Structure, facilitates the fixation and distribution of multi-pipeline, and its bottom sectional is trapezoidal, to be different from the taper of prior art, delays current
By the water speed that the goes out during water outlet of bottom, increase filtration time.
The heavy-duty service method of the denitrification filter pool of the present embodiment, step is：As shown in Fig. 2
Step one, valve are arranged：Open valve B321, valve D341, valve F361, valve G371 and valve H411；Close
Valve closing door A311, valve C331, valve E351 and valve I421；
Step 2, water flowing：Sewage enters distributive pipe B32 by water inlet pipe 3, enters back into water-locator 322, and by filtrate 10
Overflow bottom；
The flowing of step 3, filtrate：Air-lift device 6 is blown to air hose 8, and 8 bottom ozzle of air hose is blown into sand suction pipe 9
The filtrate 10 of 1 bottom of filter tank body and part water Jing sand suction pipe 9 are lifted into sand-washing device 5 by gas, after cleaning in sand-washing device 5
Filtrate 10 enters filtrate pipe 7, is directed into filter tank body 1 from top to bottom by filtrate pipe 7, and the washed-out sand water of filtrate 10 then enters connecting tube
C 37, then Jing extension tube attacheds B44 enter wastewater disposal basin；
Step 4, reaction：While step 3, sewage under the guide functions of baffle plate 81, with the filter moved from top to bottom
Material 10 is fully contacted and reacts, and the water overflow after process is to 10 top layer of filtrate；
Step 5, water conservancy diversion：Water after the process on 10 top layer of filtrate enters collection respectively through water hole A211 and water hole B221
Tank A21 and water leg B22, lead respectively by Jing connecting tubes A 34 and connecting tube B36 for the clear liquid in water leg A21 and water leg B22
Collecting pipe 38 is flow to, then Jing connecting tubes D41 enter extension tube attached A43, clear water reserviors are entered by extension tube attached A43.
Embodiment 3
The denitrification filter pool of the present embodiment, basic structure with embodiment 2, its underrun method, step is：Such as Fig. 3
It is shown,
Step one, valve are arranged：Open valve A311, valve C331 and valve E351；Close valve B321, valve
D341, valve F361, valve G371, valve H411 and valve I421；
Step 2, water flowing：Sewage enters distributive pipe A31 and distributive pipe C33 by water inlet pipe 3, then respectively enters water leg A21
With water leg B22, then respectively through water hole A211 and water hole B221 enter filter tank body 1；
Step 3, reaction：Sewage is fully contacted and is reacted with top-down filtrate 10, and the water after process passes through supporting layer
12；
Step 4, water conservancy diversion：Through supporting layer 12 water through water-distributing device 11 collection after, after 35 water outlet of outlet pipe, Jing
Extension tube attached A43 enters clear water reserviors.
Embodiment 4
The denitrification filter pool of the present embodiment, basic structure with embodiment 2, its strength back-washing method, step is：Such as Fig. 4 institutes
Show,
Step one, valve are arranged：Open valve D341, valve E351, valve F361 and valve I421；Close valve
A311, valve B321, valve C331, valve G371 and valve H411；
Step 2, water flowing：Backwash water is entered the bottom of filter tank body 1 by extension tube attached A43 Jing outlet pipes 35；
Step 3, wash away：Backwash water washes away filtrate 10, after backwash water goes up upwards Jing after the distribution of bottom water-distributing device 11
The water leg A21 and water leg B22 of both sides are respectively enterd by water hole A211 and water hole B221；
Step 4, outer row：Backwash water Jing connecting tube A 34 of water leg A21 and water leg B22 and connecting tube B36 are guided to
Collecting pipe 38, then Jing connecting tubes E42 enter extension tube attached B44, wastewater disposal basin is entered by extension tube attached B44.
Embodiment 5
The denitrification filter pool of the present embodiment can be multiple with layout, the present embodiment layout 3, and they are connected, and each is anti-
In nitrification filter tank, filtrate 10 is different, and the main method of operation is different, realizes being used in conjunction with for polytype denitrification filter pool, really
Water quality reaching standard is protected, filter tank composition and the main method of operation are as follows：
In 1# filter tanks, 10 particle diameter of filtrate is 0.5～1.2mm, and the number such as 0.5mm, 1.2mm or 0.8mm may be selected in the present embodiment
Value, mainly using high load operating mode；In 2# filter tanks, 10 particle diameter of filtrate is 2～4mm, and 2mm, 4mm may be selected in the present embodiment
Or the numerical value such as 3mm, selected using high load operating mode or low load operating mode, 3# filter tanks according to 1# filter tanks effluent quality
10 particle diameter of interior filtrate is 2～4mm, and the numerical value such as 2mm, 4mm or 3mm may be selected in the present embodiment, mainly adopts underload mode
Operation.
Three redistributions of the denitrification filter pool of the present embodiment, carry out three process, cooperating type effect to sewage, it can be ensured that
It is up to standard after water treatment.
Below schematically the present invention and embodiments thereof are described, the description does not have restricted, institute in accompanying drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if the common skill of this area
Art personnel are enlightened by which, in the case of without departing from the invention objective, are designed and the technical scheme without creative
Similar frame mode and embodiment, all should belong to protection scope of the present invention.
Claims (10)
1. a kind of denitrification filter pool, is fixedly installed including filter tank body (1), water inlet pipe (3) and filter tank body (1) upper outside wall
Water leg A (21) and water leg B (22), it is characterised in that the washed-out sand for also arranging including the upper lid center of filter tank body (1)
Device (5)；Wherein：
Water inlet pipe (3) distributive pipe A (31), distributive pipe B (32) in parallel and distributive pipe C (33) are passed through water leg A
(21), filter tank body (1) and water leg B (22)；Distinguish external connecting tube A in the bottom of water leg A (21) and water leg B (22)
And connecting tube B (36) (34)；Connecting tube A (34), connecting tube B (36) and collecting pipe (38) are connected by threeway；Collecting pipe (38)
Connected with connecting tube D (41) and connecting tube E (42) by threeway again；The bottom of filter tank body (1) is circumscribed with outlet pipe (35), goes out
Water pipe (35), connecting tube D (41) also pass through threeway and extension tube attached A (43) is communicated；
The bottom of sand-washing device (5) is circumscribed with connecting tube C (37), and connecting tube C (37) and connecting tube E (42) are by threeway and outward
Adapter B (44) is communicated；
Distributive pipe A (31), distributive pipe B (32), distributive pipe C (33), connecting tube A (34), outlet pipe (35), connecting tube B
(36), valve is mounted in connecting tube C (37), connecting tube D (41) and connecting tube E (42)；
Water leg A (21) and water leg B (22) are respectively by water hole A (211) and water hole B (221) and filter tank body
(1) communicate.
2. a kind of denitrification filter pool according to claim 1, it is characterised in that：The bottom of sand-washing device (5) is also connected with
There is the sand suction pipe (9) of insertion filtrate (10) bottom, sand suction pipe (9) outer wall is cased with air hose (8)；The bottom of sand-washing device (5) also connects
It is connected to the filtrate pipe (7) towards filter tank body (1).
3. a kind of denitrification filter pool according to claim 2, it is characterised in that：Distributive pipe B (32) are inserted into filtrate
(10) internal, its bottom gap formula is socketed in the outer wall of air hose (8), and outlet is left in bottom；The bottom of the outlet,
The outer wall close-fit of air hose (8) is socketed with baffle plate (81).
4. a kind of denitrification filter pool according to claim 3, it is characterised in that：Outside the outlet of distributive pipe B (32)
Edge is also fixedly connected with water-locator (322), and described filtrate pipe (7) are in downward curved tubulose, and described baffle plate (81) are in outer downwards
That what is opened is horn-like.
5. a kind of denitrification filter pool according to claim 4, it is characterised in that：Described water-locator (322) are in open downwards
Cylindrical shape；Air hose (8) are circumscribed with air-lift device (6).
6. a kind of denitrification filter pool according to claim 4, it is characterised in that：The bottom of filter tank body (1) is arranged
There is water-distributing device (11), water-distributing device (11) top is coated with supporting layer (12), and supporting layer (12) surface sediment filtrate (10) is extremely
The top half of filter tank body (1), and bury the outlet of distributive pipe B (32) completely；Water leg A (21) and water leg B
(22) it is symmetrical set.
7. a kind of denitrification filter pool according to claim 1 to 6, it is characterised in that：Filter tank body (1) section is in side
Shape structure, its bottom sectional are trapezoidal.
8. a kind of heavy-duty service method of denitrification filter pool, it is characterised in that step is：
Step one, valve are arranged：Open valve B (321), valve D (341), valve F (361), valve G (371) and valve H
(411)；Close valve A (311), valve C (331), valve E (351) and valve I (421)；
Step 2, water flowing：Sewage enters distributive pipe B (32) by water inlet pipe (3), enters back into water-locator (322), and by filtrate (10)
Middle and lower part overflow；
The flowing of step 3, filtrate：Air-lift device (6) is blown to air hose (8), and air hose (8) bottom ozzle is to sand suction pipe (9)
The filtrate (10) of filter tank body (1) bottom and part water Jing sand suction pipes (9) are lifted into sand-washing device (5), in sand-washing device by interior air blowing
(5) filtrate (10) in after cleaning enters filtrate pipe (7), is directed into filter tank body (1), filtrate from top to bottom by filtrate pipe (7)
(10) washed-out sand water then enters connecting tube C (37), then Jing extension tube attacheds B (44) enter wastewater disposal basin；
Step 4, reaction：While step 3, sewage under the guide functions of baffle plate (81), with the filtrate for moving from top to bottom
(10) it is fully contacted and reacts, the water overflow after process is to filtrate (10) top layer；
Step 5, water conservancy diversion：Water after the process on filtrate (10) top layer is entered respectively through water hole A (211) and water hole B (221)
Water leg A (21) and water leg B (22), in water leg A (21) and water leg B (22) clear liquid difference Jing connecting tubes A (34) and
Connecting tube B (36) is guided to collecting pipe (38), then Jing connecting tubes D (41) enter extension tube attached A (43), are arranged by extension tube attached A (43)
Enter clear water reserviors.
9. a kind of underrun method of denitrification filter pool, it is characterised in that step is：
Step one, valve are arranged：Open valve A (311), valve C (331) and valve E (351)；Close valve B (321), valve
D (341), valve F (361), valve G (371), valve H (411) and valve I (421)；
Step 2, water flowing：Sewage enters distributive pipe A (31) and distributive pipe C (33) by water inlet pipe (3), then respectively enters water leg A
(21) and water leg B (22), then respectively through water hole A (211) and water hole B (221) enter filter tank body (1)；
Step 3, reaction：Top-down sewage is fully contacted and is reacted with filtrate (10), and the water after process passes through supporting layer
(12)；
Step 4, water conservancy diversion：Through supporting layer (12) water through water-distributing device (11) collection after, by outlet pipe (35) water outlet after,
Jing extension tube attacheds A (43) enter clear water reserviors.
10. the strength back-washing method of a kind of denitrification filter pool, it is characterised in that step is：
Step one, valve are arranged：Open valve D (341), valve E (351), valve F (361) and valve I (421)；Close valve
A (311), valve B (321), valve C (331), valve G (371) and valve H (411)；
Step 2, water flowing：Backwash water is entered the bottom of filter tank body (1) by extension tube attached A (43) Jing outlet pipes (35)；
Step 3, wash away：Backwash water washes away filtrate (10), after backwash water goes up upwards Jing after bottom water-distributing device (11) distribution
The water leg A (21) and water leg B (22) of both sides are respectively enterd by water hole A (211) and water hole B (221)；
Step 4, outer row：Backwash water Jing connecting tube A (34) and connecting tube B (36) of water leg A (21) and water leg B (22) is led
Collecting pipe (38) is flow to, then Jing connecting tubes E (42) enter extension tube attached B (44), wastewater disposal basin are entered by extension tube attached B (44).
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| CN201611138894.6A CN106517505B (en) | 2016-12-12 | 2016-12-12 | Denitrification filter tank and operation method thereof |
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| CN201611138894.6A CN106517505B (en) | 2016-12-12 | 2016-12-12 | Denitrification filter tank and operation method thereof |
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| CN111533256A (en) * | 2020-05-25 | 2020-08-14 | 周碧波 | Continuous flow carbon source-free biological denitrification device |
| CN117263379A (en) * | 2023-10-20 | 2023-12-22 | 日照城投环境科技集团有限公司 | Continuous flow sand filter with denitrification function |
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