CN208071426U - A kind of sewage-treatment plant of intensified denitrification and dephosphorization - Google Patents

Abstract

The utility model discloses a kind of sewage-treatment plants of intensified denitrification and dephosphorization, include for connecting the anaerobic reaction component of sewage water inlet pipe, the anoxic pond for connecting anaerobic reaction component, the aerobic biofilter for connecting anoxic pond, the MBR membrane modules in aerobic biofilter, the main air inlet pipe for connecting MBR membrane modules, the wind turbine for connecting main air inlet pipe, primary flow pipe, self priming pump and the water tank for connecting MBR membrane modules, wind turbine, self priming pump and water tank are set to outside aerobic biofilter；Anaerobic reaction component is in series by least two UBF anaerobic reactors；The water inlet of aerobic biofilter is set to top, and anoxic pond connects the water inlet of aerobic biofilter；MBR membrane modules are set to lower half position in aerobic biofilter, and the first half forms filtrate area in water inlet position in aerobic biofilter.The utility model is used with structure, effectively reduces the nitrogen and phosphorus content in sewage.Further improve the Nitrogen/Phosphorus Removal of MBR membrane bioreactors.

Description

A kind of sewage-treatment plant of intensified denitrification and dephosphorization

Technical field

The utility model is related to technical field of sewage, and in particular to a kind of sewage disposal dress of intensified denitrification and dephosphorization It sets.

Background technology

With total amount of sewage discharge be continuously increased and chemical fertilizer, petroleum product, synthetic detergent and pesticide etc. are a large amount of raw It produces and applies, the influence of the inorganic nutrient substances to environment such as nitrogen, phosphorus is increasing in waste water.Nitrogen and phosphorus are to cause water eutrophication Change the important substance with environmental pollution.With being on the rise for nitrogen and phosphorus pollution, the contradictory sharpening of environment and people are to ring The reinforcement of border consciousness and the raising to environmental quality requirement, more and more countries and regions are more next to the discharge standard of nitrogen, phosphorus It is stringenter.Nitrogen and phosphorus pollution has become the primary index for influencing surface water quality of water environment.Nitrogen and the important battalion that phosphorus is aqueous bio Substance is supported, water nutrition is solved the problems, such as, denitrification and phosphorus is removed from sewage.

MBR is also known as membrane bioreactor (Membrane Bio-Reactor), is a kind of by film separation unit and biological The novel water technology that reason unit is combined, is mainly made of oxygen compatibility pool, MBR membrane cisterna units, goes the effect for denitrogenating phosphorus that can reach It arrives《Urban wastewater treatment firm pollutant emission standard》(GB18918-2002) level-one A standards.

Utility model content

The purpose of this utility model is that a kind of sewage-treatment plant of intensified denitrification and dephosphorization is disclosed, in traditional MBR works Optimal improvements preamble unit on the basis of skill, and use for reference biological filtering tank process and biofilter unit is added, further improve nitrogen phosphorus Reduction rate.

In order to achieve the above objectives, the utility model adopts the following technical solution：

A kind of sewage-treatment plant of intensified denitrification and dephosphorization, include for connect the anaerobic reaction component of sewage water inlet pipe, Connect the anoxic pond of anaerobic reaction component, the aerobic biofilter for connecting anoxic pond, the MBR film groups in aerobic biofilter Part, the main air inlet pipe for connecting MBR membrane modules, the wind turbine for connecting main air inlet pipe, primary flow pipe, the self priming pump for connecting MBR membrane modules And water tank, wind turbine, self priming pump and water tank are set to outside aerobic biofilter；Anaerobic reaction component is by least two UBF anaerobic reactors It is in series；The water inlet of aerobic biofilter is set to top, and anoxic pond connects the water inlet of aerobic biofilter；MBR film groups Part is set to lower half position in aerobic biofilter, and the first half forms filtrate area in water inlet position in aerobic biofilter.UBF Anaerobic reactor, i.e. upflow sludge blanket-filter are in anaerobic filter (Anaerobic Filter, abbreviation AF) and upper It is developed on the basis of flow anaerobic sludge bed (Upflow Anaerobic Sludge Blanket, abbreviation UASB) novel multiple Box-like anaerobic fluidized bed reactor.

Further, the UBF anaerobic reactors are diameter depth ratio >=1:2.5 UBF anaerobic reactors.The deep ratio of diameter is detested for UBF The ratio between the interior diameter of oxygen reactor and depth.

Further, the UBF anaerobic reactors include shell, set on lower part of the housing Sludge Bed, be set to shell middle and upper part Filter material layer, the water outlet set on shell and gas outlet, water outlet and gas outlet are located at filter material layer top position.

Further, the filler in the filtrate area includes at least one of oyster shell powder, diatomite or modified clay particle.

Further, the MBR membrane modules include the MBR films air inlet pipe for connecting the main air inlet pipe, connection MBR film air inlets Aeration tube, MBR diaphragms and the MBR film outlet pipes for connecting MBR diaphragms of pipe；MBR films air inlet pipe and MBR film outlet pipes constitute outer Frame, MBR diaphragms and aeration tube are set in outline border, and the air inlet of MBR film air inlet pipe is located at the top of outline border, MBR film outlet pipes Water outlet be set to outline border top；MBR film outlet pipes connect the primary flow pipe, and primary flow pipe connects the self priming pump, from Sucking pump connects the water tank；The wind turbine connects MBR film air inlet pipe by the main air inlet pipe, is embodied as aeration tube gas supply.

Further, it is closed at the position that the MBR films air inlet pipe is connected with the MBR films outlet pipe, prevents MBR film air inlets Pipe is connected to MBR film outlet pipes.

Further, the aeration tube is set to and closes at the position of the outer frame bottom, the space D of aeration tube to outer frame bottom With the height H of outline border, meet

Further, further include MBR film back-flushing structures, MBR film back-flushing structures include backwashing water pipe and set on recoil Backwashing solenoid valve on wash water pipe, the import for backwashing water pipe connect the clear water water tank, backwash the outlet connection of water pipe The MBR films outlet pipe；When MBR film back-flushing structures work, backwashing solenoid valve is opened, and the self priming pump is closed.

Further, further include mud discharging pipe, anaerobic reaction component return duct and anoxic pond return duct；Mud discharging pipe is logical It crosses the first solenoid valve and connects the aerobic biofilter realization discharge excess sludge；The anoxic pond is connected by second solenoid valve The outlet of the import of anaerobic reaction component return duct, anaerobic reaction component return duct connects anaerobic reaction group by third solenoid valve Part；Aerobic biofilter connects the import of anoxic pond return duct by the 4th solenoid valve, and the outlet of anoxic pond return duct passes through the Five solenoid valves connect anoxic pond.

Further, further include control device, the wind turbine, the self priming pump, the backwashing solenoid valve, first electricity Magnet valve, the second solenoid valve, the third solenoid valve, the 4th solenoid valve and the 5th solenoid valve are separately connected control Device.

Compared with prior art, the beneficial effects of the utility model：

The utility model uses the structure of UBF anaerobic reactors, advantage to be：(1) UBF anaerobic reactors 11 are in top institute The packing layer (filling Ball-type packing) of placement, not only grows to microorganism and provides space, be adsorbed with a large amount of free bacteria and dirt Mud flco so that biomembrane can be effectively attached to above, and very excellent to the interception effect of suspended sludge, greatly be increased The total biomass in reactor is added, and to COD_crRemoval rate has 20% or so contribution.After even if biomembrane aging falls off Also the core of granule sludge is can be used as, help forms more granule sludges.(2) water (flow) direction is upward in reactor, with production biogas The ascent direction of air-flow is consistent afterwards, and this results in two benefits, first, the generation blocked with short stream is reduced, second is that being more advantageous to micro- Biology comes into full contact with sewage, can more effectively form granule sludge.(3) filter material layer 113 of UBF anaerobic reactors is another A effect is exactly to assist three phase separator, it is separated when the bubble for sweeping along mud granule to rise together can be made to be filler collision Come, reduces the probability of sludge loss.UBF anaerobic reactors use diameter depth ratio >=1:2.5 structure, it is possible to increase sewage and sludge The time come into full contact with, bottom of pond are in complete anaerobic state, and hydrolysis acidification acts on more abundant, COD_crRemoval is apparent, improves sewage Biodegradability is conducive to subsequent Aerobic Process for Treatment；Meanwhile in the environment of complete anaerobism anaerobic phosphorus release is with obvious effects, i.e. phosphorus is gone Except effect is good.

It using the structure that aerobic biofilter is arranged in MBR membrane module primes, is aerated by wind turbine, while giving MBR diaphragms It is aerated and is oxygenated to aerobic biofilter.Aerobic biofilter filtrate area, filler include in oyster shell powder, diatomite or modified clay At least one can effectively be reduced in sewage by the absorption and filtration of the biomembrane that filtrate and filter material surface are grown Nitrogen and phosphorus content.The MBR film back-flushing structures of use, simple in structure, improvement expenses are low, small.

The utility model is the Optimal improvements of existing MBR membrane reactors, can significantly improve MBR membrane reactors to sewage water denitrification The effect of dephosphorization.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, before not making the creative labor property It puts, other drawings may also be obtained based on these drawings.

Fig. 1 is a kind of planar structure signal of the utility model " sewage-treatment plant of intensified denitrification and dephosphorization " embodiment Figure；

Fig. 2 is the structural schematic diagram of MBR membrane modules in Fig. 1.

In figure, 1- anaerobic reaction components；11-UBF anaerobic reactors；111- shells；112- Sludge Beds；113- filter material layers； 114- water outlets；The gas outlets 115-；2- anoxic ponds；3- aerobic biofilters；The water inlet of 31- aerobic biofilters；32- filtrates Area；4-MBR membrane modules；41-MBR film air inlet pipe；42- aeration tubes；43-MBR diaphragms；44-MBR film outlet pipes；45- plugs；5- Main air inlet pipe；6- wind turbines；7- primary flow pipes；8- self priming pumps；10- water tanks；11-MBR film back-flushing structures；111- backwashing waters Pipe；112- backwashing solenoid valves；12- mud discharging pipes；13- anaerobic reaction component return ducts；14- anoxic pond return ducts；15- First solenoid valve；16- second solenoid valves；17- third solenoid valves；The 4th solenoid valves of 18-；The 5th solenoid valves of 19-.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts The every other embodiment obtained, shall fall within the protection scope of the present invention.

A kind of sewage-treatment plant of intensified denitrification and dephosphorization of the present embodiment as shown in Figure 1, including be used to connect wastewater influent The anaerobic reaction component 1 of pipe, the aerobic biofilter 3 for connecting anoxic pond 2, is set to the anoxic pond 2 of connection anaerobic reaction component 1 The MBR membrane modules 4 of 3 lower inside of aerobic biofilter, connect main air inlet pipe 5 at the main air inlet pipe 5 of connection MBR membrane modules 4 Primary flow pipe 7, self priming pump 8 and the water tank 10 of wind turbine 6, connection MBR membrane modules 4, wind turbine 6, self priming pump 8 and water tank 10 are set to aerobic Outside biofilter.Anaerobic reaction component 1 is by 2 diameter depth ratio >=1:2.5 UBF anaerobic reactors 11 are in series.Aerobe The water inlet 31 in filter tank is set to top, and anoxic pond 2 connects the water inlet 31 of aerobic biofilter.MBR membrane modules 4 are set to aerobic Lower half position in biofilter 3, the first half forms filtrate area 32, filtrate area 32 in water inlet position in aerobic biofilter 3 At least one of interior filler oyster shell powder, diatomite or modified clay particle.It can effectively be dropped using the structure in filtrate area 32 Nitrogen P elements in low sewage.

Anaerobic reaction component 1 in the present embodiment uses 2 11 concatenated structures of UBF anaerobic reactors.UBF anaerobism is anti- Device 11 is answered to include shell 111, the Sludge Bed 112 set on 111 lower part of shell, the filter material layer 113 set on 111 middle and upper part of shell, set Water outlet 114 in shell 111 and gas outlet 115, water outlet 114 and gas outlet 115 are located at 113 top position of filter material layer.Filter The bed of material 113 is made of filler and its biomembrane of attachment.When sewage from the bottom of reactor enter, sequentially pass through Sludge Bed 112 After carrying out Anaerobic Treatment reaction, the water come out from Sludge Bed 112 enters filter material layer 113, carries out gas-liquid-solid separation, and water is from water outlet Mouth 114 is discharged, and gas can carry out storage or directly use after being transported out from gas outlet 115.

UBF anaerobic reactors 11 combine the advantage of UASB and AF reactors, than common anaerobic pond high treating effect, advantage It is：(1) packing layer (good using Ball-type packing effect) that UBF anaerobic reactors 11 are disposed on top, not only gives microorganism Growth provides space, is adsorbed with a large amount of free bacteria and sludge flco so that and biomembrane can be effectively attached to above, and It is very excellent to the interception effect of suspended sludge, the total biomass in reactor is significantly increased, and to COD_crRemoval rate has 20% or so contribution.It can be used as the core of granule sludge after biomembrane aging falls off, help forms more particles Sludge.(2) water (flow) direction is upward in reactor, consistent with the ascent direction of air-flow after production biogas, this results in two benefits, It can more effectively be formed with the generation of short stream second is that be more advantageous to coming into full contact with for microorganism and sewage first, reducing and blocking Grain sludge.(3) another effect of the filter material layer 113 of UBF anaerobic reactors is exactly to assist three phase separator, it can make to sweep along dirt The bubble that mud particle rises together is to separate when filler collision, reduces the probability of sludge loss.UBF anaerobic reactors Using diameter depth ratio >=1:2.5 structure, it is possible to increase the time that sewage comes into full contact with sludge, bottom of pond are in complete anaerobic state, water It is more abundant to solve acidification, COD_crRemoval is apparent, improves the biodegradability of sewage, is conducive to subsequent Aerobic Process for Treatment；Meanwhile it is complete Anaerobic phosphorus release is with obvious effects in the environment of full anaerobism, i.e. the removal effect of phosphorus is good.

The top of aerobic biofilter 3 is arranged water distribution layer water distribution uniformity, the bottom of which has holes of aerobic biofilter 3, in membrane cisterna Oxygen can enter filter tank by hole, and filter tank is made to become an aerobic environment.It is logical that sewage from top to bottom uniformly flows through filtrate area 32 It when crossing the composite filtering material with abundant biomembrane, can effectively adsorb, nitrogen phosphorus of degrading, and through hole is dropped into membrane cisterna.

MBR membrane modules 4 include the aeration tube of the MBR films air inlet pipe 41 of connection main air inlet pipe 5, connection MBR films air inlet pipe 41 42, the MBR films outlet pipe 44 of MBR diaphragms 43 and connection MBR diaphragms 43；MBR films air inlet pipe 41 and MBR films outlet pipe 44 are constituted Outline border, MBR diaphragms 43 and aeration tube 42 are set in outline border, and the air inlet 411 of MBR film air inlet pipe is located at the top of outline border, MBR The water outlet 441 of film outlet pipe is set to the top of outline border.It is sealed at the position that MBR films air inlet pipe 41 and MBR films outlet pipe 44 connect It closes, prevents MBR films air inlet pipe 41 to be connected to MBR films outlet pipe 44, plug 45 can be used.Aeration tube 42, which is set to, closes on outer frame bottom Position at, specifically, the space D of aeration tube 42 to outer frame bottom and the height H of outline border, meetWind turbine 6 is logical It crosses main air inlet pipe 7 and connects MBR films air inlet pipe 41, be embodied as the gas supply of aeration tube 42.MBR films outlet pipe 44 connects primary flow pipe 7, main Outlet pipe 7 connects self priming pump 8, and self priming pump 8 connects water tank 10 and drainpipe by three-way pipe, and the water in water tank 10 can do secondary profit With purified water can be immediately discharged in river by drainpipe.The present embodiment is used is arranged MBR film groups in aerobic biofilter The structure of part 4 can save the construction of secondary settling tank, reduce the present embodiment the space occupied, also can be real using single MBR membrane modules 4 Reveal water and monolithic aeration, and, the inside of each MBR diaphragm 43 more uniform, adjustable to the aeration of every MBR diaphragm 43 It can expose and arrive gas, it is therefore prevented that 43 surface of MBR diaphragms quickly blocks.

The present embodiment further includes MBR films back-flushing structure 11, and MBR films back-flushing structure 11 includes backwash 111 He of water pipe The import of backwashing solenoid valve 112 on backwash water pipe 111, backwash water pipe 111 connects clear water water tank, backwashing water The outlet connection MBR films outlet pipe 44 of pipe 111.When MBR films back-flushing structure 11 works, backwashing solenoid valve 112 is opened, self-priming Pump 8 is closed.

The present embodiment further includes mud discharging pipe 12, anaerobic reaction component return duct 13 and anoxic pond return duct 14.Sludge Delivery pipe 12 connects aerobic biofilter 3 by the first solenoid valve 15 and realizes discharge excess sludge.Anoxic pond 2 passes through the second electromagnetism Valve 16 connects the import of anaerobic reaction component return duct 13, and the outlet of anaerobic reaction component return duct 13 passes through third solenoid valve 17 Connect anaerobic reaction component 1.Aerobic biofilter 3 connects the import of anoxic pond return duct 14, anoxic by the 4th solenoid valve 18 The outlet of pond return duct 14 connects anoxic pond 2 by the 5th solenoid valve 19.The present embodiment further includes control device (not shown), wind Machine 6, self priming pump 8, backwashing solenoid valve 112, the first solenoid valve 15, second solenoid valve 16, third solenoid valve 17, the 4th solenoid valve 18 and the 5th solenoid valve 19 be separately connected control device.

The other structures of the present embodiment are referring to the prior art.

The utility model is not limited to the above embodiment, if various changes or modifications to the utility model do not take off Spirit and scope from the utility model, if these modification and variations belong to the claims and equivalents of the utility model Within the scope of, then the utility model is also intended to include these modification and variations.

Claims (10)

1. a kind of sewage-treatment plant of intensified denitrification and dephosphorization, it is characterized in that：Include anti-for connecting the anaerobism of sewage water inlet pipe Answer component, connect anaerobic reaction component anoxic pond, connect anoxic pond aerobic biofilter, in aerobic biofilter MBR membrane modules, connect MBR membrane modules main air inlet pipe, connect main air inlet pipe wind turbine, connect MBR membrane modules primary flow pipe, Self priming pump and water tank, wind turbine, self priming pump and water tank are set to outside aerobic biofilter；Anaerobic reaction component is by least two UBF anaerobism Reactor is in series；The water inlet of aerobic biofilter is set to top, and anoxic pond connects the water inlet of aerobic biofilter； MBR membrane modules are set to lower half position in aerobic biofilter, and the first half forms filter in water inlet position in aerobic biofilter Expect area.

2. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 1, it is characterised in that：The UBF anaerobism Reactor is diameter depth ratio >=1:2.5 UBF anaerobic reactors.

3. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 1 or claim 2, it is characterised in that：The UBF detests Oxygen reactor includes shell, the Sludge Bed set on lower part of the housing, the filter material layer set on shell middle and upper part, the water outlet set on shell And gas outlet, water outlet and gas outlet are located at filter material layer top position.

4. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 1, it is characterised in that：In the filtrate area Filler include at least one of oyster shell powder, diatomite or modified clay particle.

5. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 1 or claim 2, it is characterised in that：The MBR films Component includes the MBR films air inlet pipe for connecting the main air inlet pipe, connects aeration tube, MBR diaphragms and the connection of MBR film air inlet pipe The MBR film outlet pipes of MBR diaphragms；MBR films air inlet pipe and MBR film outlet pipes constitute outline border, and MBR diaphragms and aeration tube are set to outer In frame, the air inlet of MBR film air inlet pipe is located at the top of outline border, and the water outlet of MBR film outlet pipes is set to the top of outline border；MBR Film outlet pipe connects the primary flow pipe, and primary flow pipe connects the self priming pump, and self priming pump connects the water tank；The wind turbine is logical The main air inlet pipe connection MBR film air inlet pipe is crossed, aeration tube gas supply is embodied as.

6. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 5, it is characterised in that：The MBR films into It is closed at the position that tracheae is connected with the MBR films outlet pipe, MBR films air inlet pipe is prevented to be connected to MBR film outlet pipes.

7. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 5, it is characterised in that：The aeration tube is set At the position for closing on the outer frame bottom, the space D of aeration tube to outer frame bottom and the height H of outline border meet

8. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 5, it is characterised in that：Further include MBR films Back-flushing structure, MBR film back-flushing structures include backwashing water pipe and the backwashing solenoid valve on backwash water pipe, recoil The import of wash water pipe connects clear water water tank, and the outlet for backwashing water pipe connects the MBR films outlet pipe；MBR film back-flushing structures When work, backwashing solenoid valve is opened, and the self priming pump is closed.

9. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 8, it is characterised in that：Further include sludge row Put pipe, anaerobic reaction component return duct and anoxic pond return duct；Mud discharging pipe connects the aerobic life by the first solenoid valve Realize discharge excess sludge in object filter tank；The anoxic pond connects the import of anaerobic reaction component return duct by second solenoid valve, The outlet of anaerobic reaction component return duct connects anaerobic reaction component by third solenoid valve；Aerobic biofilter passes through the 4th electricity Magnet valve connects the import of anoxic pond return duct, and the outlet of anoxic pond return duct connects anoxic pond by the 5th solenoid valve.

10. a kind of sewage-treatment plant of intensified denitrification and dephosphorization according to claim 9, it is characterised in that：Further include control Device, it is the wind turbine, the self priming pump, the backwashing solenoid valve, first solenoid valve, the second solenoid valve, described Third solenoid valve, the 4th solenoid valve and the 5th solenoid valve are separately connected control device.