CN108928924A - A kind of multifunctional sewage biological processing unit and processing method - Google Patents
A kind of multifunctional sewage biological processing unit and processing method Download PDFInfo
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- CN108928924A CN108928924A CN201811132853.5A CN201811132853A CN108928924A CN 108928924 A CN108928924 A CN 108928924A CN 201811132853 A CN201811132853 A CN 201811132853A CN 108928924 A CN108928924 A CN 108928924A
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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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
Abstract
The invention discloses a kind of multifunctional sewage biological processing unit and processing method, which includes reaction tank and secondary settling tank；Reaction tank is prismatic by the length that two end faces, bottom surface and several medial surfaces end to end surround upper end opening, water inlet pipe and outlet pipe is respectively set on two end faces end to end, each medial surface and the inner wall of bottom surface are equipped with 17 slots, corresponding slot surrounds semi-circular, when plate is arranged inside, 18 reaction members will be divided into inside reaction tank；Seal cover board is equipped at the upper end opening of each reaction member, each seal cover board is equipped with agitating device and vent valve；The corresponding reaction tank side of each reaction member is equipped with and bypass inlet and outlet pipes；Each reaction member bottom surface is equipped with aerator and the corresponding air inlet pipe being connected；The outlet pipe of reaction tank is connected with secondary settling tank；Secondary settling tank bottom is equipped with mud discharging mouth.Processing unit of the present invention can flexibly construct a variety of biologic process for treating sewage, be suitable for different quality processing requirement.
Description
Technical field
The invention belongs to technical field of sewage in environmental protection, in particular to a kind of to be applicable to the more of different quality
Function biological sewage treatment device and its operation method.
Background technique
With the rapid development of social economy, the continuous expansion of the surge of town dweller's quantity and size industrial enterprises, I
The discharge amount of state's town domestic sewage and industrial wastewater also cumulative year after year.All kinds of stain diseases contain a large amount of organic pollutant and
The main reason for holophytic nutritions salt such as nitrogen phosphorus is that black and odorous water, eutrophication is caused to take place frequently, and water ecological environment deteriorates, it is necessary to
After strictly being handled and reaching discharge standard, environment can be discharged into.
Common sewage disposal technology can be divided into physical-chemical process and bioanalysis two major classes.Because bioanalysis has wide spectrum, height
The low advantage of effect, operating cost, it has also become the prefered method of sewage treatment project and facility.For different sewage water quality and processing
Target, the biologic process for treating sewage with different function are also developed.Currently, the typical sewage being most widely used is raw
Object treatment process includes: the traditional activated sludge process (i.e. plug-flow type active sludge method) using organic pollutant as processing target；With
Organic matter removal and denitrogenation are the Anoxybiotic-aerobic biologic denitrification process (i.e. A/O biological denitrification process) of target；With organic matter removal
It is the anaerobic-aerobic Biological Phosphorus Removal Processes (i.e. A/O Biological Phosphorus Removal Processes) of target with dephosphorization；With organic matter removal, denitrogenation and remove
Phosphorus is anaerobic- anoxic- oxic synchronous denitrogen dephosphorus technology (the i.e. A of target2/ O synchronous denitrogen dephosphorus technology)；And in these bases
The a large amount of improvement and deformation biologic process for treating sewage that developed in plinth technique.
But then, existing biological sewage treatment device often process form fix, the method for operation it is single, one suit
It sets and is only able to achieve a kind of set sewage treatment function；It is difficult to adapt to the variation of water quality, water and processing requirement, in actual sewage
Applicability, versatility in processing application is poor.Therefore, it is necessary to develop, one kind can be flexibly applied to different quality and processing is wanted
The multifunctional sewage biological processing unit and its operation method asked.
Summary of the invention
The purpose of the present invention is to solve defects existing in the prior art, provide a kind of suitable for different quality processing
It is required that sewage-treatment plant.
In order to achieve the above object, the present invention provides a kind of multifunctional sewage biological processing unit, the multi-functional sewages
Biological treatment device includes reaction tank and secondary settling tank；If reaction tank is by two end faces end to end, bottom surface and is along its length arranged
The length that dry medial surface surrounds upper end opening is prismatic, and the water inlet being connected with inside reaction tank is respectively set on two end faces end to end
17 slots are equipped on the inner wall of pipe and outlet pipe, each medial surface and bottom surface, the corresponding slot of medial surface and bottom surface surrounds half
Annular will be divided into 18 reaction members when plate is arranged in all semi-circular slots inside reaction tank；Each reaction member
It is equipped with seal cover board at corresponding reaction tank upper end opening, is equipped with agitating device and vent valve on each seal cover board；It is each anti-
It answers the corresponding reaction tank side of unit to be equipped with the bypass inlet and outlet pipes being connected with reaction member, bypasses and be equipped with valve at inlet and outlet pipes
Door；The corresponding reaction tank bottom surface of each reaction member is equipped with aerator and the corresponding air inlet pipe being connected；Air inlet pipe is equipped with
Intake valve；The outlet pipe of reaction tank is connected with secondary settling tank；Secondary settling tank bottom is equipped with mud discharging mouth, which passes through sludge reflux
Pump is connected with the water inlet pipe of reaction tank or bypass inlet and outlet pipes.
By carrying out the separation of each reaction member and the setting of intake valve, vent valve to reaction tank, facilitates and carry out
The differentiation in the difference biological oxidation functional response such as oxygen, anaerobism, anoxic area, to adapt to the requirement of different quality processing.It bypasses simultaneously
The setting of inlet and outlet pipes is convenient to carry out reflow treatment to each reaction zone as needed.Reaction can be effectively supplemented by sludge reflux pump
Mixed liquor goes out the activated sludge that stream is taken away in pond, and the sludge concentration in reaction tank is made to keep stablizing, while to buffering influent quality
Variation also can play a role.
Further, it is equipped with plate in the corresponding semi-circular slot of each reaction member in reaction tank, or at interval of two
It is equipped with plate in the corresponding semi-circular slot of reaction member, or at interval of being equipped in the corresponding semi-circular slot of three reaction members
Plate；Flowing hole is arranged according to top and bottom interval respectively in adjacent insert plates.
By different partitions and biological oxidation type set-up mode, the reaction zone in reaction tank is divided into 6 or 9
Or 18, the Sewage Biological Treatment of different function (such as anaerobism, anoxic, aerobic) is carried out to each reaction zone.It is arranged by interval
Flowing hole, form the cross-flow of adjacent reaction area up and down direction, prevent water flow short-circuit, and guarantee that mixed liquor flowing is whole in reaction tank
Body is in ideal plug-flow state.
Preferably, reaction tank is in cuboid, and 17 slots being arranged in reaction tank are uniformly distributed along its length, and slot
It is U-shaped.
Preferably, secondary settling tank is vertical-flow secondary settling tank, including upper mast cylinder and lower taper sludge bucket；Cylindrical barrel body
Center is equipped with central tube；The outlet pipe of reaction tank is connected by central tube with secondary settling tank；Effluent weir is equipped with above cylindrical barrel body；
Center bottom of the tube is equipped with umbrella shape deflector.
By the setting of secondary settling tank, the mixed liquor flowed out in reaction tank is entered in secondary settling tank from top to bottom by central tube, and
By umbrella shape deflector, the Uniform Flow in secondary settling tank, sludge enter lower taper sludge bucket by gravitational settling in the horizontal direction
In, it is discharged after collecting by mud discharging mouth, clear water rises to cylinder upper end after precipitating, enters catch basin along effluent weir and goes out to flow.
Further, multifunctional sewage biological processing unit of the present invention further includes oxygen charging pump；Oxygen charging pump passes through corresponding sky
Tracheae is connected with corresponding aerator.Aerating system is consequently formed, and aeration quantity is controlled by intake valve.
The present invention also provides above-mentioned multifunctional sewage biological processing unit carry out sewage treatment method, this method according to
Sewage quality situation carries out different disposal:
1, when carrying out dirty organic pollutants processing, corresponding semi-ring is set at interval of three reaction members in the reaction tank
It is equipped with plate in shape slot, reaction tank is divided into 6 biochemical function reaction zones, opens each biochemical function reaction zone bottom
6 biochemical function reaction zones are disposed as aerobic zone by the vent valve of intake valve and top, sewage to be processed and by secondary settling tank
The mixed liquor that the returned sludge of reflux is formed flows through each section of aerobic zone by first section aerobic zone sequence, is finally entered by latter end aerobic zone
Secondary settling tank, after secondary settling tank mud-water separation, treated water and excess sludge discharge, returned sludge are back to first section aerobic zone.
2, when carrying out nitric wastewater processing or removing dirty organic pollutants and nitrogen:
When carbon-nitrogen ratio is greater than 7 in sewage, corresponding semi-circular slot is set at interval of three reaction members in the reaction tank
It is interior to be equipped with plate, reaction tank is divided into 6 biochemical function reaction zones, anoxic zone, anoxic zone, good is followed successively by by first section to endpiece
The vent valve at oxygen area, aerobic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and top is opened, anoxic zone bottom into
Air valve is closed, the vent valve at top is opened, sewage to be processed and the mixed liquor formed by the returned sludge that secondary settling tank flows back by
First section anoxic zone sequence flows through each section of reaction zone, finally enters secondary settling tank by latter end aerobic zone, after secondary settling tank mud-water separation, place
Water and excess sludge discharge after reason, returned sludge is back to first section anoxic zone, while the mixed liquor in latter end aerobic zone passes through
Mixed liquor reflux pump is back to first section anoxic zone；
When carbon-nitrogen ratio is between 5 to 7 in sewage, corresponding semi-circular is set at interval of three reaction members in the reaction tank
It is equipped with plate in slot, reaction tank is divided into 6 biochemical function reaction zones, anoxic zone, aerobic is followed successively by by first section to endpiece
Area, aerobic zone, anoxic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and the vent valve at top are opened, anoxic zone bottom
The intake valve in portion is closed, the vent valve at top is opened, and sewage to be processed enters head by water inlet pipe and bypass inlet and outlet pipes respectively
Section anoxic zone and middle part anoxic zone, the mixed liquor in reaction tank finally enter two by latter end aerobic zone followed by each reaction zone
Heavy pond, after secondary settling tank mud-water separation, treated water and excess sludge discharge, returned sludge are back to first section anoxic zone；
When carbon-nitrogen ratio is between 3 to 5 in sewage, corresponding semi-circular is set at interval of two reaction members in the reaction tank
It is equipped with plate in slot, reaction tank is divided into 9 biochemical function reaction zones, anoxic zone, aerobic is followed successively by by first section to endpiece
Area, aerobic zone, anoxic zone, aerobic zone, aerobic zone, anoxic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and top
Vent valve open, the intake valve of anoxic zone bottom is closed, the vent valve at top is opened, and sewage to be processed is respectively by water inlet pipe
Enter first section anoxic zone and two, middle part anoxic zone with bypass inlet and outlet pipes, the mixed liquor in reaction tank is followed by each reaction
Area finally enters secondary settling tank by latter end aerobic zone, and after secondary settling tank mud-water separation, treated water and excess sludge discharge are returned
Sludge reflux is flowed to first section anoxic zone.
3, when carrying out sewage dephosphorization processing or the total organic pollutant of removal sewage and phosphorus, at interval of three in the reaction tank
Reaction member, which is arranged in corresponding semi-circular slot, is equipped with plate, reaction tank is divided into 6 biochemical function reaction zones, by first section
Anaerobic zone, anaerobic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and top are followed successively by endpiece
The vent valve in portion is opened, and the intake valve of anaerobic zone bottom and the vent valve at top are closed, and sewage to be processed and is returned by secondary settling tank
The mixed liquor that the returned sludge of stream is formed flows through each reaction zone by first section anaerobic zone sequence, finally enters two by latter end aerobic zone and sinks
Pond, after secondary settling tank mud-water separation, treated water and excess sludge discharge, returned sludge are back to first section anaerobic zone.
4, when carrying out the synchronous removal organic matter of sewage, nitrogen, phosphorus processing, at interval of two reaction members in the reaction tank
Be arranged in corresponding semi-circular slot and be equipped with plate, reaction tank is divided into 9 biochemical function reaction zones, by first section to endpiece according to
Secondary is anaerobic zone, anaerobic zone, anoxic zone, anoxic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone bottom
Intake valve and the vent valve at top open, the intake valve of anoxic zone bottom is closed, the vent valve at top is opened, anaerobic zone bottom
Intake valve and the vent valve at top close, sewage to be processed and the mixed liquor that is formed of returned sludge to be flowed back by secondary settling tank by
First section anaerobic zone sequence flows through each reaction zone, finally enters secondary settling tank by latter end aerobic zone, after secondary settling tank mud-water separation, processing
Water and excess sludge discharge afterwards, returned sludge is back to first section anaerobic zone, while the mixed liquor in latter end aerobic zone is by mixing
It closes liquid reflux pump and is back to third section anoxic zone.
When the use above method, which still cannot effectively carry out organic matter, nitrogen, phosphorus, synchronizes removal, by 9 biochemistry in reaction tank
Mixed liquor in functional response area in the 4th section of anoxic zone is back to first section anaerobic zone by mixed liquor reflux pump.
The present invention has the advantage that compared with prior art
A kind of multifunctional sewage biological processing unit proposed by the present invention is compact-sized, simple and direct, and operation method is flexible, and function is rich
Richness can highly extend；Without changing device overall configuration, only pass through the separation of internal plate, the setting in biological function area and outer
The operation of a variety of classical sewage treatment process can be realized in the connection of portion's return-flow system.Set of device can flexible adaptation in not
With the demand of sewage quality and processing target, compared with the sewage-treatment plant of traditional simple function, it is provided with extremely strong practical
Property and application value.
Detailed description of the invention
Fig. 1 is biochemical reaction tank structure chart of the present invention；
Fig. 2 is conventional plug-flow Activated Sludge Process operation method figure of the present invention；
Fig. 3 is anoxic of the present invention/aerobic (A/O) biological denitrification process operation method figure；
Fig. 4 is 2 section water-feeding As/O biological denitrification process operation method figure of the invention；
Fig. 5 is 3 section water-feeding As/O biological denitrification process operation method figure of the invention；
Fig. 6 is aerobic/anaerobic of the present invention (A/O) Biological Phosphorus Removal Processes operation method figure；
Fig. 7 is anaerobic/anoxic of the present invention/aerobic (A2/ O) synchronous denitrogen dephosphorus technology operation method figure；
Fig. 8 is UCT process operation method figure of the present invention.
Specific embodiment
Below by drawings and examples, the invention will be further described.
The present invention provides a kind of multifunctional sewage biological processing unit that can be suitably used for different quality and its operation methods.
Apparatus main body is set by biochemical reaction tank, secondary settling tank and attached oxygen charging pump 18, mixed liquor reflux pump 20 and sludge reflux pump 17 etc.
Standby and connecting line is constituted.
As shown in Figure 1, biochemical reaction tank is the core of device, and it is prismatic for length, water inlet pipe 1 and water outlet are respectively set end to end
Pipe 7.17 slots 5 are set along its length inside biochemical reaction tank, reaction tank can be divided into 18 by insertion plate 16
Reaction member；Adjacent plate presses upper and lower part interval setting flowing hole 19 respectively, forms the cross-flow of up and down direction, prevents water
Flow short-circuit, and guarantee that mixed liquor flowing is generally in ideal plug-flow state in biochemical reaction tank.Each reaction member side is (right
Answer the side-walls of reaction tank) setting bypass inlet and outlet pipes 6；Seal cover board 2 is set above each reaction member, is set on seal cover board
Set dismountable agitating device 4 and vent valve 3；Dismountable aerator 8 and intake valve 9 is arranged in each reaction member bottom.
As shown in Fig. 2, secondary settling tank is vertical-flow secondary settling tank, main body is by 14 two parts structure of cylindrical barrel body 12 and taper sludge bucket
At；Body centre is equipped with central tube 10, and the mixed liquor flowed out in biochemical reaction tank outlet pipe 7 enters two by central tube from top to bottom
In heavy pond；Central tube lower part sets umbrella shape deflector 13, makes in central tube the mixed liquor Uniform Flow in pond in the horizontal direction；Sludge
Entered in lower taper sludge bucket 14 by gravitational settling, is discharged after collecting by mud discharging mouth 15；Clear water rises to cylinder after precipitating
Upper end overflows into catch basin 11 along effluent weir and goes out to flow.
Oxygen charging pump 18 connects the aerator 8 of biochemical reaction bottom of pond portion by air hose and intake valve 9, forms aeration system
System, and aeration quantity is controlled by intake valve 9.
Reaction member in biochemical reaction tank can be by adjusting the state (opening or closing) of vent valve 3 on seal cover board
With the state (open or close and controlled by intake valve 9) of bottom aerator 8, it is set as that there are different biological oxidation function
The biochemical reaction zone of energy: being anaerobic zone when vent valve 3 and aerator 8 simultaneously close off；When vent valve 3 is opened, aerator
It is anoxic zone when 8 closing；It is aerobic zone when vent valve 3 and aerator 8 are opened simultaneously.
It can be connected by mixed liquor reflux pump 20 between the bypass inlet and outlet pipes 6 of differential responses unit side, form mixed liquor
Return-flow system.From aerobic zone to anoxic zone mixed liquor reflux main purpose be aerobic zone generate nitrate flow back into it is scarce
Oxygen area provides nitrogen source for denitrifying bacteria, to carry out denitrification denitrogenation.Mixed liquor reflux from anoxic zone to anaerobic zone can both subtract
Nitrate content in few backflow mixed liquor, weakens the denitrification of anaerobism section, reduces denitrifying bacterium to the carbon source of polyP bacteria
Competition；Dissolved oxygen in phegma can again reduced, ensure that the anaerobic environment of anaerobism section, ensured anaerobic phosphorus release process into
Row.
Partial sludge can be back to biochemical reaction tank by sludge reflux pump 17 by secondary settling tank sludge bucket bottom mud discharging mouth 15,
Form sludge recirculation system.The main purpose of sludge reflux is that supplement reaction tank mixed liquor goes out the activated sludge that stream is taken away, and is made anti-
Sludge concentration in Ying Chi keeps stablizing, while also can play a role to the variation of buffering influent quality.
When device is run, multiple adjacent reaction members can be set to identical biological treatment functional areas, and by not
Congenerous section, different function area form different mixed liquor return-flow systems and sludge reflux from the connection of the pipeline between secondary settling tank
System realizes all kinds of biochemical wastewater treatment process flows, to meet the sewage of different quality sewage or different quality purification target
Processing needs.
It is specifically introduced below with reference to different disposal process example:
Embodiment 1:
As shown in Fig. 2, waste water of the processing containing organic pollutant or when removing dirty organic pollutants as main target, this hair
Bright device may be configured as conventional plug-flow Activated Sludge Process.Shape is arranged by plate in 18 reaction members of biochemical reaction tank
At 6 biochemical function reaction zones, these biochemical reaction functional areas, which are all provided with, is set to aerobic zone.It sewage to be processed and is returned by secondary settling tank
The returned sludge of stream enters from first section biochemical reaction zone.The mixed liquor that sewage and returned sludge are formed integrally is in plug-flow in system
State flows through each section of aerobic reactor zone by first section aerobic reactor zone sequence, finally enters secondary settling tank by latter end aerobic reactor zone, pass through
After secondary settling tank mud-water separation, water outlet and excess sludge discharge system, returned sludge are back to first section aerobic reactor zone after processing.
Embodiment 2:
As shown in figure 3, processing nitrogenous effluent or when using organic pollutant and nitrogen as sewage treatment main target, apparatus of the present invention can
It is set as anoxic/aerobic (A/O) biological denitrification process.18 reaction members of biochemical reaction tank are arranged to 6 lifes by plate
Change response function area, i.e. anoxic/anoxic/aerobic/aerobic/aerobic/aerobic.Raw sewage enters from first section hypoxia response area, by two
The returned sludge of heavy pond reflux also simultaneous implantation.The mixed liquor that sewage and returned sludge are formed flows into the 2nd section by first section anoxic zone
Then anoxic zone successively flows into 4 sections of aerobic zones, finally enters secondary settling tank, through secondary settling tank mud-water separation, water outlet and residue after processing
Sludge discharge system, returned sludge to first segment anoxic zone.Meanwhile the aerobic zone mixed liquor containing nitrate nitrogen is led to by latter end aerobic zone
It crosses mixed liquor return-flow system and is back to first section anoxic zone.
Embodiment 3:
As shown in figure 4, in the raw sewage, when 5 < carbon-nitrogen ratio (COD/ total nitrogen) < 7, apparatus of the present invention may be configured as 2 sections of water inlets and lack
Oxygen/aerobic (A/O) biological denitrification process.18 reaction members in biochemical reaction tank are set as 6 biochemical reaction functional areas, that is, lack
Oxygen/aerobic/aerobic/anoxic/aerobic/aerobic arrangement.Raw sewage enters system by 2 anoxic zones respectively by setting ratio, by two
The returned sludge of heavy pond reflux enters from first section anoxic zone.Mixed liquor in system is aerobic by latter end followed by each reaction zone
Area, which goes out to flow, enters secondary settling tank, and after mud-water separation, water outlet and excess sludge discharge system after processing, returned sludge are back to first section and lack
Oxygen reaction zone.
Embodiment 4:
As shown in figure 5, in the raw sewage, when 3 < carbon-nitrogen ratio (COD/ total nitrogen) < 5, apparatus of the present invention may be configured as 3 sections of water inlets and lack
Oxygen/aerobic (A/O) biological denitrification process.18 reaction members in biochemical reaction tank are set as 9 biochemical reaction functional areas, that is, lack
Oxygen/aerobic/aerobic/anoxic/aerobic/aerobic/anoxic/aerobic/aerobic arrangement.Raw sewage is by setting ratio respectively by 3 anoxics
Area enters system, is entered by the returned sludge of secondary settling tank reflux from first section anoxic zone.Mixed liquor in system is followed by each anti-
Area is answered, is flowed out by latter end aerobic zone and enters secondary settling tank, after mud-water separation, water outlet and excess sludge discharge system after processing flow back
Sludge reflux is to first section hypoxia response area.
Embodiment 5:
As shown in fig. 6, Removal of Phosphorus in Wastewater or when using organic pollutant and phosphorus as sewage treatment main target, apparatus of the present invention can
It is set as aerobic/anaerobic (A/O) dephosphorization process.18 reaction members in biochemical reaction tank are set as 6 biochemical reaction functional areas,
That is anaerobism/aerobic/anaerobic/aerobic/aerobic/aerobic arrangement.Raw sewage and returned sludge are entered by first section anaerobic reaction area, mixing
Liquid is flowed out by latter end aerobic zone followed by each reaction zone and enters secondary settling tank, and after mud-water separation, water outlet and residue are dirty after processing
Mud discharge system, returned sludge are back to first section anaerobic reaction area.
Embodiment 6:
As shown in fig. 7, when simultaneously using organic matter, nitrogen and phosphorus as sewage treatment main target when, apparatus of the present invention may be configured as detesting
Oxygen/anoxic/aerobic (A2/ O) synchronous denitrogen dephosphorus technology, 18 reaction members in biochemical reaction tank are set as 9 biochemical reactions
Functional areas, i.e. anaerobism/anaerobic/anoxic/anoxic/aerobic/aerobic/aerobic/aerobic/aerobic arrangement.Raw sewage is anti-by first section anaerobism
Area is answered to enter biochemical reaction tank, by the returned sludge also simultaneous implantation of secondary settling tank reflux；Mixed liquor is followed by 2 anaerobic zones, 2
A anoxic zone and 5 aerobic zones；After flow out biochemical reaction tank, into secondary settling tank；Through secondary settling tank mud-water separation, after processing water outlet and
Excess sludge discharge system, returned sludge are back to first section anaerobic reaction area；Mixed liquor in the aerobic zone of end is passed in and out by bypass
Water pipe sections are back to first section anoxic zone, form mixed liquor return-flow system, provide nitrate nitrogen for the anoxic denitrification stage.
Embodiment 7:
As shown in figure 8, leading to A because of the reasons such as sewage quality and operation2When/O technique nitrogen phosphorus ligands efficiency is bad, present invention dress
It sets and may be configured as A2Improvement technique-UCT technique of/O technique, further to promote effects of purification quality.By UCT process operation
When.18 reaction members in biochemical reaction tank are set as 9 biochemical reaction functional areas, i.e. anaerobism/anaerobic/anoxic/anoxic/good
Oxygen/aerobic/aerobic/aerobic/aerobic arrangement.Raw sewage enters biochemical reaction tank by first section anaerobic reaction area, and mixed liquor successively flows
Behind 2 anaerobic zones, 2 anoxic zones and 5 aerobic zones, biochemical reaction tank is flowed out；Biochemical reaction tank, which goes out to flow mixed liquor, enters two
Heavy pond, through secondary settling tank mud-water separation, water outlet and excess sludge discharge system, returned sludge are back to first section hypoxia response after processing
Area；Mixed liquor in the aerobic zone of end is partly refluxed to first section anoxic zone by bypass inlet and outlet pipes, forms mixed liquor reflux 1, is
The anoxic denitrification stage provides nitrate nitrogen；Mixed liquor in second segment hypoxia response area is partly refluxed to by bypass inlet and outlet pipes
First section anaerobic reaction area forms mixed liquor reflux 2, and flow back dissolved oxygen and the lower mixed liquor of nitrate nitrogen content, is that anaerobism is anti-
Area is answered to supplement poly- phosphobacteria.
Claims (10)
1. a kind of multifunctional sewage biological processing unit, it is characterised in that: the multifunctional sewage biological processing unit includes anti-
Ying Chi and secondary settling tank；The reaction tank is by two end faces end to end, bottom surface and along its length several medial surfaces for being arranged surround
The length of end opening is prismatic, the water inlet pipe and outlet pipe being connected with inside reaction tank is respectively set on two end faces end to end, respectively
17 slots are equipped on medial surface and the inner wall of bottom surface, the corresponding slot of medial surface and bottom surface surrounds semi-circular, when all
In semi-circular slot when setting plate, 18 reaction members will be divided into inside reaction tank；The corresponding reaction tank of each reaction member
It is equipped with seal cover board at upper end opening, is equipped with agitating device and vent valve on each seal cover board；Each reaction member is corresponding
Reaction tank side is equipped with the bypass inlet and outlet pipes being connected with reaction member, bypasses and is equipped with valve at inlet and outlet pipes；Each reaction is single
The corresponding reaction tank bottom surface of member is equipped with aerator and the corresponding air inlet pipe being connected；The air inlet pipe is equipped with intake valve；
The outlet pipe of the reaction tank is connected with secondary settling tank；The secondary settling tank bottom is equipped with mud discharging mouth, which is returned by sludge
Stream pump is connected with the water inlet pipe of reaction tank or bypass inlet and outlet pipes.
2. multifunctional sewage biological processing unit according to claim 1, it is characterised in that: in the reaction tank at interval of
Plate is equipped in the corresponding semi-circular slot of two reaction members, or at interval of in the corresponding semi-circular slot of three reaction members
Equipped with plate；Flowing hole is arranged according to top and bottom interval respectively in adjacent insert plates.
3. multifunctional sewage biological processing unit according to claim 1, it is characterised in that: the reaction tank is in rectangular
Body, interior 17 slots being arranged of reaction tank are uniformly distributed along its length, and slot is U-shaped.
4. multifunctional sewage biological processing unit according to claim 1, it is characterised in that: the secondary settling tank is vertical-flow
Secondary settling tank, including upper mast cylinder and lower taper sludge bucket；The cylindrical barrel body center is equipped with central tube；The reaction tank
Outlet pipe be connected by central tube with secondary settling tank；Effluent weir is equipped with above the cylindrical barrel body；The center bottom of the tube is set
There is umbrella shape deflector.
5. multifunctional sewage biological processing unit according to claim 1, it is characterised in that: the multifunctional sewage biological
Processing unit further includes oxygen charging pump；The oxygen charging pump is connected by corresponding air hose with corresponding aerator.
6. a kind of method for carrying out sewage treatment using multifunctional sewage biological processing unit described in claim 1, feature exist
In: when carrying out dirty organic pollutants processing, corresponding semi-ring is set at interval of three reaction members in the reaction tank
It is equipped with plate in shape slot, reaction tank is divided into 6 biochemical function reaction zones, opens each biochemical function reaction zone bottom
6 biochemical function reaction zones are disposed as aerobic zone by the vent valve of intake valve and top, sewage to be processed and by secondary settling tank
The mixed liquor that the returned sludge of reflux is formed flows through each section of aerobic zone by first section aerobic zone sequence, is finally entered by latter end aerobic zone
Secondary settling tank, after secondary settling tank mud-water separation, treated water and excess sludge discharge, returned sludge are back to first section aerobic zone.
7. a kind of method for carrying out sewage treatment using multifunctional sewage biological processing unit described in claim 1, feature exist
In: when carrying out nitric wastewater processing, when carbon-nitrogen ratio is greater than 7 in sewage, set in the reaction tank at interval of three reaction members
It sets and is equipped with plate in corresponding semi-circular slot, reaction tank is divided into 6 biochemical function reaction zones, successively by first section to endpiece
For anoxic zone, anoxic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and the vent valve at top
It opens, the intake valve of anoxic zone bottom is closed, the vent valve at top is opened, sewage to be processed and the reflux to be flowed back by secondary settling tank
The mixed liquor that sludge is formed flows through each section of reaction zone by first section anoxic zone sequence, finally enters secondary settling tank by latter end aerobic zone, passes through
After secondary settling tank mud-water separation, treated water and excess sludge discharge, returned sludge is back to first section anoxic zone, while latter end is good
Mixed liquor in oxygen area is back to first section anoxic zone by mixed liquor reflux pump；When carbon-nitrogen ratio is between 5 to 7 in sewage, institute
It states to be arranged in corresponding semi-circular slot in reaction tank at interval of three reaction members and is equipped with plate, reaction tank is divided into 6
Biochemical function reaction zone is followed successively by anoxic zone, aerobic zone, aerobic zone, anoxic zone, aerobic zone, aerobic zone by first section to endpiece, good
The intake valve of oxygen area bottom and the vent valve at top are opened, and the intake valve of anoxic zone bottom is closed, the vent valve at top is opened, to
The sewage of processing enters first section anoxic zone and middle part anoxic zone by water inlet pipe and bypass inlet and outlet pipes respectively, the mixing in reaction tank
Liquid finally enters secondary settling tank by latter end aerobic zone followed by each reaction zone, after secondary settling tank mud-water separation, treated water and
Excess sludge discharge, returned sludge are back to first section anoxic zone；When carbon-nitrogen ratio is between 3 to 5 in sewage, in the reaction tank
It is arranged in corresponding semi-circular slot at interval of two reaction members and is equipped with plate, it is anti-that reaction tank is divided into 9 biochemical functions
Area is answered, anoxic zone, aerobic zone, aerobic zone, anoxic zone, aerobic zone, aerobic zone, anoxic zone, aerobic is followed successively by by first section to endpiece
The vent valve at area, aerobic zone, the intake valve of aerobic zone bottom and top is opened, and the intake valve of anoxic zone bottom closes, top
Vent valve is opened, and sewage to be processed enters first section anoxic zone and two, middle part anoxic by water inlet pipe and bypass inlet and outlet pipes respectively
Area, the mixed liquor in reaction tank finally enters secondary settling tank by latter end aerobic zone followed by each reaction zone, through secondary settling tank muddy water point
From rear, treated water and excess sludge discharge, returned sludge are back to first section anoxic zone.
8. a kind of method for carrying out sewage treatment using multifunctional sewage biological processing unit described in claim 1, feature exist
In: when carrying out sewage dephosphorization processing, it is arranged in corresponding semi-circular slot in the reaction tank at interval of three reaction members
Equipped with plate, reaction tank is divided into 6 biochemical function reaction zones, anaerobic zone, anaerobic zone, aerobic is followed successively by by first section to endpiece
Area, aerobic zone, aerobic zone, aerobic zone, the intake valve of aerobic zone bottom and the vent valve at top are opened, the air inlet of anaerobic zone bottom
Valve and the vent valve at top are closed, and sewage to be processed and are detested by the mixed liquor that the returned sludge that secondary settling tank flows back is formed by first section
Oxygen area sequence flows through each reaction zone, finally enters secondary settling tank by latter end aerobic zone, after secondary settling tank mud-water separation, treated water
It is discharged with excess sludge, returned sludge is back to first section anaerobic zone.
9. a kind of method for carrying out sewage treatment using multifunctional sewage biological processing unit described in claim 1, feature exist
In: when carrying out the synchronous removal organic matter of sewage, nitrogen, phosphorus processing, at interval of two reaction member settings pair in the reaction tank
It is equipped with plate in the semi-circular slot answered, reaction tank is divided into 9 biochemical function reaction zones, is followed successively by and is detested to endpiece by first section
Oxygen area, anaerobic zone, anoxic zone, anoxic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, aerobic zone, the air inlet of aerobic zone bottom
Valve and the vent valve at top are opened, and the intake valve of anoxic zone bottom is closed, the vent valve at top is opened, the air inlet of anaerobic zone bottom
Valve and the vent valve at top are closed, and sewage to be processed and are detested by the mixed liquor that the returned sludge that secondary settling tank flows back is formed by first section
Oxygen area sequence flows through each reaction zone, finally enters secondary settling tank by latter end aerobic zone, after secondary settling tank mud-water separation, treated water
It is discharged with excess sludge, returned sludge is back to first section anaerobic zone, while the mixed liquor in latter end aerobic zone is returned by mixed liquor
Stream blowback flow to third section anoxic zone.
10. the method for sewage treatment according to claim 9, it is characterised in that: 9 biochemical functions are anti-in the reaction tank
The mixed liquor in area in the 4th section of anoxic zone is answered to be back to first section anaerobic zone by mixed liquor reflux pump.
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