Disclosure of Invention
In order to achieve the above purpose, the invention discloses a sewage total nitrogen removal device, which comprises a shell and further comprises: the integrated install in anaerobic zone, mixed reaction district and the filtration district that the intercommunication set up in the casing, mixed reaction district is connected with the filtration district through overflow subassembly, mixed reaction district is located anaerobic zone top, wash out water supply assembly install in the casing, and with anaerobic zone connects, wash out water supply assembly and be located filtration district top, water inlet and delivery port install in the casing surface, the water inlet with wash out water supply assembly and be connected, the delivery port is connected with the filtration district.
Preferably, the anaerobic zone is arranged in a bucket shape, and the water outlet end of the flushing water delivery assembly is attached to the inner wall of the anaerobic zone and extends to the bottom position in the anaerobic zone.
Preferably, a stirrer and anaerobic activated sludge are arranged in the anaerobic zone.
Preferably, the mixed reaction zone comprises:
the lower aeration zone is positioned above the anaerobic zone, the lower aeration zone is connected with the anaerobic zone through a three-phase separator, aerobic granular sludge is arranged in the lower aeration zone, and an aerator connected in the lower aeration zone is arranged on the surface of the shell;
the upper sedimentation zone is positioned above the lower aeration zone and is connected with the overflow assembly;
and the sloping plates are arranged in the lower aeration zone in parallel, and the aerobic granular sludge is attached to the surface of the sloping plates.
Preferably, the overflow assembly comprises:
the overflow groove is circumferentially arranged at a position close to the top of the inner wall of the upper sedimentation zone;
the overflow box is arranged at the side end of the upper sedimentation zone and connected with the overflow groove, and the overflow box is positioned in the flushing water delivery assembly;
the U-shaped overflow pipe, U-shaped overflow pipe one end stretches into wash out in the water supply subassembly, and with the overflow tank is connected, U-shaped overflow pipe other end stretches into in the filtration district, U-shaped overflow pipe is close to overflow tank end height and is greater than U-shaped overflow pipe is close to filtration district end height.
Preferably, the filtering area includes:
the water outlet is connected with the bottom water outlet area;
the top filtering area is positioned above the bottom water outlet area, an MBR filter membrane component is arranged in the top filtering area, and the other end of the U-shaped overflow pipe extends into the top filtering area and is positioned above the MBR filter membrane component;
the water filtering cap is arranged at the bottom in the top filtering area and is connected with the bottom water outlet area;
one end of the back flushing pipe penetrates through the shell and extends into the top filtering area from the top end of the top filtering area, and a back flushing valve is arranged at the other end of the back flushing pipe;
and the window is arranged on the surface of the shell and is connected with the top filtering area.
Preferably, the flushing water supply assembly comprises:
the upper flushing chamber is positioned above the filtering area, the water inlet is connected with the upper flushing chamber, and the bottom of the upper flushing chamber is arranged in a downward inclined mode;
one end of the lower flushing pipe is connected with the bottom end of the upper flushing chamber, and the other end of the lower flushing pipe is attached to the inner wall of the anaerobic zone and extends to the bottom position in the anaerobic zone.
Preferably, the mixed reaction zone further comprises:
the upper outlets are arranged at the top part in the lower aeration zone and are communicated with the upper sedimentation zone, and the upper outlets are arranged in a strip shape;
the baffle plate assemblies are positioned between the two upper outlets, and the two baffle plate assemblies are slidably arranged at the inner top of the lower aeration zone and are arranged in one-to-one correspondence to the upper outlets;
the transverse sliding column is positioned between the two inclined plates, is connected to the inner top of the lower aeration zone in a sliding manner and is positioned between the two baffle plate assemblies;
the driving roller is arranged on the transverse sliding column and is used for driving the baffle plate assembly to slide;
the scraping plate is attached to the surface of the inclined plate and is arranged on the transverse sliding column through a bracket;
and the flushing component is arranged on the inner wall of the upper flushing chamber and is connected with the transverse sliding column.
Preferably, the baffle assembly includes:
a baffle plate, which can cover the upper outlet;
the arc-shaped slideway is arranged at the end, close to the transverse sliding strut, of the baffle plate, and the driving roller is connected to the arc-shaped slideway in a sliding manner;
the limiting sliding sleeves are arranged at two ends of the baffle in the length direction;
the limiting cross rod is fixedly arranged at the inner top of the lower aeration zone, the limiting sliding sleeve is sleeved on the limiting cross rod, and the reset spring is sleeved on the limiting cross rod and abuts against the limiting sliding sleeve.
Preferably, the flushing assembly comprises:
the supporting seat is fixedly arranged on the inner wall of the upper flushing chamber;
the overturning rod is bent at an obtuse angle and hinged to the bottom end of the supporting seat through a mounting shaft, the flushing plate is mounted on the overturning rod, and a reset torsion spring is sleeved on the mounting shaft;
the transmission chute is arranged on the turning rod;
one end of the transmission cross rod extends into the lower aeration zone and is connected with the transverse sliding column, and the other end of the transmission cross rod extends into the upper flushing chamber;
the limiting slide block is connected in the transmission chute in a sliding manner, and is connected with the other end of the transmission cross rod.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 5, the apparatus for removing total nitrogen from sewage provided in this embodiment includes a housing 10, and further includes: the integrated install in anaerobic zone 2, mixed reaction zone 3 and the filtration district 4 that the intercommunication set up in casing 10, mixed reaction zone 3 is connected with filtration district 4 through overflow subassembly 5, mixed reaction zone 3 is located anaerobic zone 2 top, wash out water supply assembly 6 install in casing 10, and with anaerobic zone 2 connects, wash out water supply assembly 6 is located filtration district 4 top, water inlet 11 and delivery port 12 install in casing 10 surface, water inlet 11 with wash out water supply assembly 6 and be connected, delivery port 12 is connected with filtration district 4.
The working principle and beneficial effects of the technical scheme are as follows:
the invention discloses a total nitrogen removal device for sewage, wherein the sewage is sent into a flushing water delivery assembly 6 from a water inlet 11, the sewage is flushed into an anaerobic zone 2 under the slope assistance of the flushing water delivery assembly 6, overflows into a mixed reaction zone 3 communicated with the anaerobic zone 2, overflows into a filtering zone 4 communicated with the mixed reaction zone 3 through an overflow assembly 5, and filtered water is discharged from a water outlet 12. The sewage total nitrogen removal device provided by the invention has the advantages of small occupied area, convenience in movement and strong applicability, and the anaerobic zone 2, the mixed reaction zone 3 and the filtering zone 4 are integrally arranged in the shell 10.
In one embodiment, the anaerobic zone 2 is arranged in a bucket shape, and the water outlet end of the flushing water delivery assembly 6 is abutted against the inner wall of the anaerobic zone 2 and extends to the bottom position in the anaerobic zone 2.
The working principle and beneficial effects of the technical scheme are as follows:
under the slope assistance of the flushing water delivery assembly 6, sewage is flushed into the anaerobic zone 2, and the sewage is flushed into the bottom of the anaerobic zone 2 from the water outlet end of the flushing water delivery assembly 6, so that the activated sludge is prevented from accumulating in the bottom of the anaerobic zone 2, and the mobility of the activated sludge in the anaerobic zone 2 is maintained.
In one embodiment, the anaerobic zone 2 is provided with a stirrer 21 and anaerobic activated sludge.
The beneficial effects of the technical scheme are as follows:
the arrangement of the stirrer 21 improves the fluidity of the anaerobic activated sludge in the anaerobic zone 2 and prevents the anaerobic activated sludge from accumulating at the bottom of the anaerobic zone 2.
In one embodiment, the mixed reaction zone 3 comprises:
the lower aeration zone 31 is positioned above the anaerobic zone 2, the lower aeration zone 31 is connected with the anaerobic zone 2 through a three-phase separator, aerobic granular sludge is arranged in the lower aeration zone 31, and an aerator connected in the lower aeration zone 31 is arranged on the surface of the shell 10;
an upper sedimentation zone 32, wherein the upper sedimentation zone 32 is positioned above the lower aeration zone 31, and the upper sedimentation zone 32 is connected with the overflow assembly 5;
and a sloping plate 33, wherein a plurality of sloping plates 33 are arranged in parallel in the lower aeration zone 31, and the aerobic granular sludge is attached to the surface of the sloping plate 33.
The working principle and beneficial effects of the technical scheme are as follows:
sewage in the anaerobic zone 2 overflows into a lower aeration zone 31 communicated with the sewage through a three-phase separator, after the aerobic granular sludge attached to the surface of the inclined plate 33 and sewage are degraded by microorganisms, the sewage overflows into an upper sedimentation zone 32 communicated with the lower aeration zone 31, and along with the rising of the liquid level in the upper sedimentation zone 32, the water is sent into a filtering zone 4 for filtering through the self-overflow assembly 5.
In one embodiment, the overflow assembly 5 comprises:
an overflow groove 51, wherein the overflow groove 51 is circumferentially arranged at a position close to the top of the inner wall of the upper sedimentation zone 32;
an overflow tank 52, wherein the overflow tank 52 is installed at the side end of the upper sedimentation zone 32 and connected with the overflow groove 51, and the overflow tank 52 is positioned in the flushing water supply assembly 6;
the U-shaped overflow pipe 53, U-shaped overflow pipe 53 one end stretches into wash water supply assembly 6, and with overflow box 52 is connected, U-shaped overflow pipe 53 other end stretches into in the filtration district 4, U-shaped overflow pipe 53 is close to overflow box 52 end height more than U-shaped overflow pipe 53 is close to filtration district 4 end height.
The working principle and beneficial effects of the technical scheme are as follows:
along with the rising of the liquid level in the upper sedimentation zone 32, the water after aeration sedimentation overflows into the overflow groove 51 and flows into the overflow box 52 communicated with the overflow groove 51, the height of the U-shaped overflow pipe 53 close to the overflow box 52 is larger than that of the U-shaped overflow pipe 53 close to the filtering zone 4, and under the gravity of the water, the water is flushed into the filtering zone 4 to finish filtering, and then is discharged from the water outlet 12.
In one embodiment, the filtering section 4 comprises:
a bottom water outlet area 41, wherein the water outlet 12 is connected with the bottom water outlet area 41;
the top filtering area 42 is positioned above the bottom water outlet area 41, an MBR filter membrane component is arranged in the top filtering area 42, and the other end of the U-shaped overflow pipe 53 extends into the top filtering area 42 and is positioned above the MBR filter membrane component;
a water filtering cap 43, wherein the water filtering cap 43 is installed at the bottom of the top filtering area 42 and is connected with the bottom water outlet area 41;
a back flushing pipe 44, wherein one end of the back flushing pipe 44 penetrates through the shell 10 and extends into the top filtering area 42 from the top end of the top filtering area 42, and a back flushing valve 45 is arranged at the other end of the back flushing pipe 44;
a window mounted to the surface of the housing 10 and connected to the top filter section 42.
The working principle and beneficial effects of the technical scheme are as follows:
the water is sent into the top filtering area 42 from the U-shaped overflow pipe 53, the water falls under the action of gravity, the MBR filter membrane assembly installed in the top filtering area 42 completes the filtration of sewage, the filtered water is collected into the bottom water outlet area 41 from the water filtering cap 43 and finally discharged from the water outlet 12, along with the increase of the filter materials attached to the surface of the MBR filter membrane assembly, the water cannot permeate into the bottom of the top filtering area 42, along with the rising of the liquid level in the top filtering area 42, the water overflows into the backwash pipe 44, the backwash valve 45 is opened, the water in the top filtering area 42 is flushed out, and the filter materials attached to the surface of the MBR filter membrane assembly are taken away, so that the water sent out by the U-shaped overflow pipe 53 is filtered under the action of the MBR filter membrane assembly after the MBR filter membrane assembly resumes the filtration capacity.
In one embodiment, the flush water supply assembly 6 comprises:
the upper flushing chamber 61 is positioned above the filtering area 4, the water inlet 11 is connected with the upper flushing chamber 61, and the bottom in the upper flushing chamber 61 is arranged in a lower inclined mode;
one end of the lower flushing pipe 62 is connected with the bottom end of the upper flushing chamber 61, and the other end of the lower flushing pipe 62 is abutted against the inner wall of the anaerobic zone 2 and extends to the bottom position in the anaerobic zone 2.
The working principle and beneficial effects of the technical scheme are as follows:
sewage is fed into the upper flushing chamber 61 from the water inlet 11, and the bottom in the upper flushing chamber 61 is arranged in a downward inclined manner, so that the sewage is flushed into the bottom in the anaerobic zone 2 from the lower flushing pipe 62 under the slope assistance of the upper flushing chamber 61, and anaerobic activated sludge is prevented from accumulating in the bottom in the anaerobic zone 2.
In one example, the mixed reaction zone 3 further comprises:
an upper outlet 34, wherein two upper outlets 34 are arranged at the top in the lower aeration zone 31 and are communicated with the upper sedimentation zone 32, and the upper outlets 34 are arranged in a strip shape;
the baffle plate assemblies 35 are positioned between the two upper outlets 34, and the two baffle plate assemblies 35 are slidably arranged at the top in the lower aeration zone 31 and are arranged in one-to-one correspondence with the upper outlets 34;
a traversing slide column 36, wherein the traversing slide column 36 is positioned between the two inclined plates 33, and the traversing slide column 36 is connected to the inner top of the lower aeration zone 31 in a sliding way and positioned between the two baffle assemblies 35;
a driving roller 37, wherein the driving roller 37 is mounted on the traverse slide column 36, and the driving roller 37 is used for driving the baffle assembly 35 to slide;
a scraper 38, wherein the scraper 38 is abutted against the surface of the inclined plate 33, and the scraper 38 is mounted on the traversing slide column 36 through a bracket;
a flushing assembly 39, said flushing assembly 39 is mounted on the inner wall of the upper flushing chamber 61, said flushing assembly 39 is connected with the traverse slide 36.
The working principle and beneficial effects of the technical scheme are as follows:
sewage is fed into the upper flushing chamber 61 from the water inlet 11, and is flushed into the inner bottom of the anaerobic zone 2 from the lower flushing pipe 62 along the slope of the upper flushing chamber 61, when the sewage water flow is large in stages, the sewage is impacted on the flushing component 39 and is quickly flushed into the anaerobic zone 2, at the moment, the sewage in the anaerobic zone 2 overflows into the lower aeration zone 31 at too high speed, the flushing component 39 drives the traversing slide column 36 to slide at the inner top of the lower aeration zone 31, when the traversing slide column 36 slides between two adjacent inclined plates 33, the baffle component 35 is driven to slide through the driving roller 37 arranged on the traversing slide column 36, and the baffle component 35 synchronously drives the scraping plate 38 to scrape the surface of the inclined plate 33 when the upper outlet 34 is blocked, so that the activity of aerobic granular sludge attached to the surface of the inclined plate 33 is improved, and meanwhile, the time that the sewage overflows into the upper sedimentation zone 32 from the water inlet 11 is delayed, and the full reaction time of the sewage is given. When the sewage flow is restored to normal, the sewage cannot impact on the flushing assembly 39, and the traverse slide 36 does not act.
In one embodiment the baffle assembly 35 comprises:
a baffle 71, said baffle 71 being capable of covering said upper outlet 34;
the arc-shaped slideway 72 is arranged at the end of the baffle 71 close to the sideslip slide column 36, and the driving roller 37 is connected to the arc-shaped slideway 72 in a sliding way;
a limiting sliding sleeve 73, wherein the limiting sliding sleeve 73 is arranged at two ends of the baffle 71 in the length direction;
the limiting cross rod 74, the limiting cross rod 74 is fixedly installed at the inner top of the lower aeration zone 31, the limiting sliding sleeve 73 is sleeved on the limiting cross rod 74, and the reset spring 75 is sleeved on the limiting cross rod 74 and is propped against the limiting sliding sleeve 73.
The working principle and beneficial effects of the technical scheme are as follows:
when the traverse slide column 36 slides between the two adjacent inclined plates 33, the driving roller 37 arranged on the traverse slide column 36 slides on the arc-shaped slideway 72, so that the baffle 71 and the limit sliding sleeve 73 connected with the baffle 71 are driven to move along the shrinkage direction of the limit cross rod 74 to the reset spring 75, the baffle 71 finishes covering the upper outlet 34, and when sewage cannot impact on the flushing assembly 39, the traverse slide column 36 drives the driving roller 37 to be separated from the arc-shaped slideway 72, the reset spring 75 drives the limit sliding sleeve 73 to reset on the limit cross rod 74, and the baffle 71 releases covering of the upper outlet 34 again.
In one embodiment, the flush assembly 39 includes:
the supporting seat 70 is fixedly arranged on the inner wall of the upper flushing chamber 61;
the overturning rod 76 is arranged in an obtuse angle bending way, the overturning rod 76 is hinged to the bottom end of the supporting seat 70 through a mounting shaft, the flushing plate 63 is mounted on the overturning rod 76, and a reset torsion spring is sleeved on the mounting shaft;
the transmission chute 77 is arranged on the turnover rod 76;
a transmission cross rod 78, wherein one end of the transmission cross rod 78 extends into the lower aeration zone 31 and is connected with the traverse sliding column 36, and the other end of the transmission cross rod 78 extends into the upper flushing chamber 61;
the limiting slide block 79 is slidably connected in the transmission chute 77, and the limiting slide block 79 is connected with the other end of the transmission cross rod 78.
The working principle and beneficial effects of the technical scheme are as follows:
when the sewage water flow is large in stages, the sewage impacts on the flushing plate 63, so that the turnover rod 76 connected with the flushing plate 63 is driven to turn downwards on the supporting seat 70 by taking the installation shaft as the center, under the cooperation of the limit sliding block 79 and the transmission sliding groove 77, the transmission cross rod 78 is driven to extend into the lower aeration zone 31, so that the transverse sliding column 36 is driven to slide, and when the sewage does not impact on the flushing plate 63, the turnover rod 76 is lifted again under the action of the reset torsion spring to complete reset.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.